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1.
Radiology ; 302(3): 613-619, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-34812668

RESUMO

Background Emotional harm incidents in health care may result in lost trust and adverse outcomes. However, investigations of emotional harm in radiology departments remain lacking. Purpose To better understand contributors and clinical scenarios in which emotional harm can occur in radiology, to document incidences, and to develop preventative countermeasures. Materials and Methods A large tertiary hospital adverse event reporting system was retrospectively searched for submissions under the category of dignity and respect in radiology between December 2014 and December 2020. Submissions were assigned to one of 14 categories per a previously developed classification system. Root-cause analysis of events was performed with a focus on countermeasures for future prevention. The person experiencing emotional harm (patient or staff) was noted. Results Of all radiology-related submissions, 37 of 3032 (1.2%) identified 43 dignity and respect incidents: failure to be patient centered (n = 23; 54%), disrespectful communication (n = 16; 37%), privacy violation (n = 2; 5%), minimization of patient concerns (n = 1; 2%), and loss of property (n = 1; 2%). Failure to be patient centered (n = 23) was subcategorized into disregard for patient preference (12 of 23; 52%), delay in care (eight of 23; 35%), and ineffective communication (three of 23; 13%). Of the 43 incidents, 32 involved patients (74%) and 11 involved staff (26%). Emotional harm in staff was because of disrespectful communication from other staff (eight of 11; 73%). Seventy-three countermeasures were identified: staff communication training (n = 32; 44%), individual feedback (n = 18; 25%), system innovation (n = 16; 22%), improvement of existing communication processes (n = 3; 4%), process reminders (n = 3; 4%), and unclear (n = 1; 1%). Individual feedback and staff communication training that focused on active listening, asking for the patient's preferences, and closed-loop communication addressed 34 of the 43 incidents (79%). Conclusion Most emotional harm incidents were from disrespectful communication and failure to be patient centered. Providing training focused on active listening, asking for patient's preferences, and closed-loop communication would potentially prevent most of these incidents. © RSNA, 2021 See also the editorial by Bruno in this issue.


Assuntos
Emoções , Relações Interprofissionais , Segurança do Paciente , Relações Profissional-Paciente , Serviço Hospitalar de Radiologia , Respeito , Feminino , Humanos , Masculino , Erros Médicos/prevenção & controle , Privacidade , Estudos Retrospectivos , Fatores de Risco , Análise de Causa Fundamental , Roubo
2.
Ann Surg ; 274(1): e18-e27, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-30946088

RESUMO

OBJECTIVE: To train practicing surgeons in robot-assisted distal pancreatectomy (RADP) and assess the impact on 5 domains of healthcare quality. BACKGROUND: RADP may reduce the treatment burden compared with open distal pancreatectomy (ODP), but studies on institutional training and implementation programs are scarce. METHODS: A retrospective, single-center, cohort study evaluating surgical performance during a procedure-specific training program for RADP (January 2006 to September 2017). Baseline and unadjusted outcomes were compared "before training" (ODP only; June 2012). Exclusion criteria were neoadjuvant therapy, vascular- and unrelated organ resection. Run charts evaluated index length of stay (LOS) and 90-day comprehensive complication index. Cumulative sum charts of operating time (OT) assessed institutional learning. Adjusted outcomes after RADP versus ODP were compared using a secondary propensity-score-matched (1:1) analysis to determine clinical efficacy. RESULTS: After screening, 237 patients were included in the before-training (133 ODP) and after-training (24 ODP, 80 RADP) groups. After initiation of training, mean perioperative blood loss decreased (-255 mL, P<0.001), OT increased (+65 min, P < 0.001), and median LOS decreased (-1 day, P < 0.001). All other outcomes remained similar (P>0.05). Over time, there were nonrandom (P < 0.05) downward shifts in LOS, while comprehensive complication index was unaffected. We observed 3 learning curve phases in OT: accumulation (<31 cases), optimization (case 31-65), and a steady-state (>65 cases). Propensity-score-matching confirmed reductions in index and 90-day LOS and blood loss with similar morbidity between RADP and ODP. CONCLUSION: Supervised procedure-specific training enabled successful implementation of RADP by practicing surgeons with immediate improvements in length of stay, without adverse effects on safety.


Assuntos
Educação Médica Continuada/métodos , Pancreatectomia/educação , Pancreatectomia/métodos , Procedimentos Cirúrgicos Robóticos/educação , Adulto , Idoso , Perda Sanguínea Cirúrgica , Feminino , Seguimentos , Humanos , Curva de Aprendizado , Tempo de Internação/estatística & dados numéricos , Masculino , Massachusetts , Pessoa de Meia-Idade , Duração da Cirurgia , Avaliação de Resultados em Cuidados de Saúde , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Pontuação de Propensão , Estudos Retrospectivos
3.
J Am Coll Radiol ; 15(11): 1573-1579, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29305077

RESUMO

PURPOSE: The aim of this study was to evaluate radiologists' experiences with patient interactions in the era of open access of patients to radiology reports. METHODS: This prospective, nonrandom survey of staff and trainee radiologists (n = 128) at a single large academic institution was performed with approval from the institutional review board with a waiver of the requirement to obtain informed consent. A multiple-choice questionnaire with optional free-text comments was constructed with an online secure platform (REDCap) and distributed via departmental e-mail between June 1 and July 31, 2016. Participation in the survey was voluntary and anonymous, and responses were collected and aggregated via REDCap. Statistical analysis of categorical responses was performed with the χ2 test, with statistical significance defined as P < .05. RESULTS: Almost three-quarters of surveys (73.4% [94 of 128]) were completed. Staff radiologists represented 54.3% of survey respondents (51 of 94) and trainees 45.7% (43 of 94). Most respondents (78.7% [74 of 94]) found interactions with patients to be a satisfying experience. More than half of radiologists (54.3% [51 of 94]) desired more opportunities for patient interaction, with no significant difference in the proportion of staff and trainee radiologists who desired more patient interaction (56.9% [29 of 51] versus 51.2% [22 of 43], P = .58). Staff radiologists who specialized in vascular and interventional radiology and mammography were significantly more likely to desire more patient interaction compared with other specialists (77.8% [14 of 18] versus 45.5% [15 of 33], P = .03). Only 4.2% of radiologists (4 of 94) found patient interactions to be detrimental to normal workflow, with 19.1% of radiologists (18 of 94) reporting having to spend more than 15 min per patient interaction. CONCLUSIONS: Most academic staff and trainee radiologists would like to have more opportunities for patient interaction and consider patient interaction rarely detrimental to workflow.


Assuntos
Acesso dos Pacientes aos Registros , Relações Médico-Paciente , Radiologistas , Serviço Hospitalar de Radiologia , Adulto , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Inquéritos e Questionários
5.
Radiographics ; 35(6): 1655-67, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26466177

RESUMO

Serious adverse events continue to occur in clinical practice, despite our best preventive efforts. It is essential that radiologists, both as individuals and as a part of organizations, learn from such events and make appropriate changes to decrease the likelihood that such events will recur. Root cause analysis (RCA) is a process to (a) identify factors that underlie variation in performance or that predispose an event toward undesired outcomes and (b) allow for development of effective strategies to decrease the likelihood of similar adverse events occurring in the future. An RCA process should be performed within the environment of a culture of safety, focusing on underlying system contributors and, in a confidential manner, taking into account the emotional effects on the staff involved. The Joint Commission now requires that a credible RCA be performed within 45 days for all sentinel or major adverse events, emphasizing the need for all radiologists to understand the processes with which an effective RCA can be performed. Several RCA-related tools that have been found to be useful in the radiology setting include the "five whys" approach to determine causation; cause-and-effect, or Ishikawa, diagrams; causal tree mapping; affinity diagrams; and Pareto charts.


Assuntos
Erros Médicos/prevenção & controle , Segurança do Paciente , Garantia da Qualidade dos Cuidados de Saúde/organização & administração , Radiologia/organização & administração , Análise de Causa Fundamental , Prevenção de Acidentes , Causalidade , Humanos , Comunicação Interdisciplinar , Lesões por Radiação/etiologia , Lesões por Radiação/prevenção & controle , Gestão de Riscos/normas , Gestão da Segurança , Grupos de Autoajuda
6.
Radiographics ; 35(6): 1677-93, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26334571

RESUMO

Harm from medical error is a difficult challenge in health care, including radiology. Modern approaches to patient safety have shifted from a focus on individual performance and reaction to errors to development of robust systems and processes that create safety in organizations. Organizations that operate safely in high-risk environments have been termed high-reliability organizations. Such organizations tend to see themselves as being constantly bombarded by errors. Thus, the goal is not to eliminate human error but to develop strategies to prevent, identify, and mitigate errors and their effects before they result in harm. High-level reliability strategies focus on systems and organizational culture; intermediate-level reliability strategies focus on establishment of effective processes; low-level reliability strategies focus on individual performance. Although several classification schemes for human error exist, modern safety researchers caution against overreliance on error investigations to improve safety. Blaming individuals involved in adverse events when they had no intent to cause harm has been shown to undermine organizational safety. Safety researchers have coined the term just culture for the successful balance of individual accountability with accommodation for human fallibility and system deficiencies. Safety is inextricably intertwined with an organization's quality efforts. A quality management system that focuses on standardization, making errors visible, building in quality, and constantly stopping to fix problems results in a safer environment and engages personnel in a way that contributes to a culture of safety.


Assuntos
Erros Médicos/prevenção & controle , Segurança do Paciente , Melhoria de Qualidade/organização & administração , Radiologia/organização & administração , Atitude do Pessoal de Saúde , Competência Clínica , Humanos , Segurança do Paciente/normas , Garantia da Qualidade dos Cuidados de Saúde/organização & administração , Serviço Hospitalar de Radiologia/organização & administração , Gestão da Segurança/organização & administração , Gestão da Segurança/normas , Análise de Sistemas
7.
Radiographics ; 35(6): 1643-51, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-26334572

RESUMO

Practice quality improvement (PQI) is a required component of the American Board of Radiology (ABR) Maintenance of Certification (MOC) cycle, with the goal to "improve the quality of health care through diplomate-initiated learning and quality improvement." The essential requirements of PQI projects include relevance to one's practice, achievability in one's clinical setting, results suited for repeat measurements during an ABR MOC cycle, and reasonable expectation to result in quality improvement (QI). PQI projects can be performed by a group or an individual or as part of a participating institution. Given the interdisciplinary nature of radiology, teamwork is critical to ensure patient safety and the success of PQI projects. Additionally, successful QI requires considerable investment of time and resources, coordination, organizational support, and individual engagement. Group PQI projects offer many advantages, especially in larger practices and for processes that cross organizational boundaries, whereas individual projects may be preferred in small practices or for focused projects. In addition to the three-phase "plan, do, study, act" model advocated by the ABR, there are several other improvement models, which are based on continuous data collection and rapid simultaneous testing of multiple interventions. When properly planned, supported, and executed, group PQI projects can improve the value and viability of a radiology practice.


Assuntos
Certificação/normas , Melhoria de Qualidade/organização & administração , Radiologia/normas , Conselhos de Especialidade Profissional/normas , Comportamento Cooperativo , Erros de Diagnóstico/prevenção & controle , Liderança , Mamografia/normas , Modelos Teóricos , Estudos de Casos Organizacionais , Prática Profissional/organização & administração , Melhoria de Qualidade/normas , Sociedades Médicas , Estados Unidos
8.
Radiographics ; 33(1): 245-61, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23322840

RESUMO

Employees in a radiology department are exposed to multiple risks, including injuries due to radiation exposure, poor ergonomics, or repetitive stress; those caused by wearing lead aprons or moving heavy equipment for portable studies; and needle sticks resulting in exposure to body fluids. Strategies to mitigate or prevent such risks include ergonomics initiatives for radiologists and technologists, appointment of a radiation safety officer to ensure compliance with radiation dose guidelines and policies, and use of equipment that prevents exposure to body fluids. In addition, there are regulations and guidelines from various government bodies on occupational radiation dose limits, handling of isotopes and chemotherapy agents, contact with patients with airborne infections, and needle stick injuries. A comprehensive staff safety program was developed for a clinical radiology department to provide a framework for staff injury prevention. The important parts of a staff safety program are observational safety audits and walkabouts and a safety reporting tool for employees. Faculty education about workplace environmental risks and their consequences, compliance with policies and guidelines on environmental safety, and development of a culture that encourages surveillance, reporting, and prompt action will go a long way toward improving overall safety for all workers in a radiology department.


Assuntos
Doenças Profissionais/prevenção & controle , Exposição Ocupacional/prevenção & controle , Saúde Ocupacional , Serviço Hospitalar de Radiologia , Gestão da Segurança/métodos , Ergonomia , Humanos , Controle de Infecções/métodos , Ferimentos Penetrantes Produzidos por Agulha/prevenção & controle , Doses de Radiação , Estados Unidos , United States Occupational Safety and Health Administration
9.
Cancer Imaging ; 12: 259-68, 2012 Aug 10.
Artigo em Inglês | MEDLINE | ID: mdl-22935164

RESUMO

Improved accuracy in oncological computed tomography (CT) could lead to a decrease in morbidity and improved survival for oncology patients. Visualization of metabolic activity using the glucose analogue [(18)F]fluorodeoxyglucose (FDG) in combination with the high anatomic resolution of CT in an integrated positron emission tomography (PET)/CT examination has the highest sensitivity and specificity for the detection of primary and metastatic lesions. However, PET/CT costs are high and patient access is limited; thus CT remains the primary imaging modality in oncology patients. We have noted that subtle lesions are more easily detected on CT by radiologists with PET/CT experience. We aimed to provide a brief review of the literature with comparisons of multi-detector computed tomography (MDCT) and PET/CT in primary and metastatic disease with an emphasis on findings that may be overlooked on MDCT in cancer of the breast, lung, colon, and ovaries, and in melanoma, as well as thrombosis in oncology patients. We further reviewed our experience for illustrative comparisons of PET/CT and MDCT studies. Experience in interpreting conventional CT scans alongside PET/CT can help the reader develop an appreciation for the subtle appearance of some lesions on CT that might otherwise be missed. This could improve detection rates, reduce errors, and improve patient management.


Assuntos
Imagem Multimodal/métodos , Neoplasias/diagnóstico , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X/métodos , Neoplasias da Mama/diagnóstico , Neoplasias do Colo/diagnóstico , Feminino , Humanos , Neoplasias Pulmonares/diagnóstico , Masculino , Melanoma/diagnóstico , Neoplasias Ovarianas/diagnóstico
10.
Radiographics ; 32(2): 573-87, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22323617

RESUMO

Many hospital radiology departments are adopting "lean" methods developed in automobile manufacturing to improve operational efficiency, eliminate waste, and optimize the value of their services. The lean approach, which emphasizes process analysis, has particular relevance to radiology departments, which depend on a smooth flow of patients and uninterrupted equipment function for efficient operation. However, the application of lean methods to isolated problems is not likely to improve overall efficiency or to produce a sustained improvement. Instead, the authors recommend a gradual but continuous and comprehensive "lean transformation" of work philosophy and workplace culture. Fundamental principles that must consistently be put into action to achieve such a transformation include equal involvement of and equal respect for all staff members, elimination of waste, standardization of work processes, improvement of flow in all processes, use of visual cues to communicate and inform, and use of specific tools to perform targeted data collection and analysis and to implement and guide change. Many categories of lean tools are available to facilitate these tasks: value stream mapping for visualizing the current state of a process and identifying activities that add no value; root cause analysis for determining the fundamental cause of a problem; team charters for planning, guiding, and communicating about change in a specific process; management dashboards for monitoring real-time developments; and a balanced scorecard for strategic oversight and planning in the areas of finance, customer service, internal operations, and staff development.


Assuntos
Melhoria de Qualidade/organização & administração , Serviço Hospitalar de Radiologia/organização & administração , Fluxo de Trabalho , Lista de Checagem , Comunicação , Apresentação de Dados , Eficiência , Objetivos , Humanos , Internet , Relações Interprofissionais , Liderança , Erros Médicos/prevenção & controle , Saúde Ocupacional , Segurança do Paciente , Guias de Prática Clínica como Assunto , Rotulagem de Produtos , Garantia da Qualidade dos Cuidados de Saúde , Gestão da Segurança/organização & administração , Design de Software , Análise e Desempenho de Tarefas
11.
AJR Am J Roentgenol ; 196(5): 1094-101, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21512075

RESUMO

OBJECTIVE: The purpose of this article is to evaluate the incidence of contrast-induced nephropathy (CIN) and the effects of associated risk factors in patients with multiple myeloma undergoing contrast-enhanced CT (CECT) with IV administration of nonionic iodinated contrast agent. MATERIALS AND METHODS: This retrospective review of medical records identified patients with a diagnosis of myeloma who underwent a CECT examination of the chest, abdomen, or pelvis between January 1, 2005, and December 1, 2008. Analysis for CIN, as defined by an increase in creatinine level after the CECT examination of 25% or more, or of 0.5 mg/dL, compared with the level before the CECT examination, both within 48 hours and within 7 days, was performed. Statistical correlations between the development of CIN and creatinine level before CECT examination, patient location, type and amount of contrast agent, blood urea nitrogen-creatinine ratio, history of diabetes, hypercalcemia, Bence Jones proteinuria, ß(2)-microglobulin level, albumin level, International Myeloma Staging System stage, and history of myeloma provided at the time the CT examination was ordered were calculated. RESULTS: Forty-six patients who completed 80 unique examinations were included; their average creatinine level before CECT examination was 0.97 mg/dL. There was no significant difference in the average creatinine levels before CT examination between patients without and those with CIN. Four (5%) and 12 (15%) patients developed CIN within 48 hours and 7 days, respectively. Only serum ß(2)-microglobulin level showed a statistically significant (p = 0.03) correlation with the development of CIN. CONCLUSION: The incidence of CIN in patients with multiple myeloma with a normal creatinine level is low and correlates with ß(2)-microglobulin levels. The administration of contrast agent in this patient population is safe but should be based on the potential benefit of the examination and the expected low risk of developing CIN.


Assuntos
Meios de Contraste/efeitos adversos , Nefropatias/induzido quimicamente , Nefropatias/epidemiologia , Mieloma Múltiplo/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos de Coortes , Feminino , Humanos , Incidência , Nefropatias/diagnóstico , Masculino , Pessoa de Meia-Idade , Mieloma Múltiplo/complicações , Estudos Retrospectivos , Fatores de Risco , Ácidos Tri-Iodobenzoicos/efeitos adversos
12.
Radiographics ; 31(1): 281-93, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-20980666

RESUMO

With increasing deployment, complexity, and sophistication of equipment and related processes within the clinical imaging environment, system failures are more likely to occur. These failures may have varying effects on the patient, ranging from no harm to devastating harm. Failure mode and effect analysis (FMEA) is a tool that permits the proactive identification of possible failures in complex processes and provides a basis for continuous improvement. This overview of the basic principles and methodology of FMEA provides an explanation of how FMEA can be applied to clinical operations in a radiology department to reduce, predict, or prevent errors. The six sequential steps in the FMEA process are explained, and clinical magnetic resonance imaging services are used as an example for which FMEA is particularly applicable. A modified version of traditional FMEA called Healthcare Failure Mode and Effect Analysis, which was introduced by the U.S. Department of Veterans Affairs National Center for Patient Safety, is briefly reviewed. In conclusion, FMEA is an effective and reliable method to proactively examine complex processes in the radiology department. FMEA can be used to highlight the high-risk subprocesses and allows these to be targeted to minimize the future occurrence of failures, thus improving patient safety and streamlining the efficiency of the radiology department.


Assuntos
Erros Médicos/prevenção & controle , Garantia da Qualidade dos Cuidados de Saúde , Serviço Hospitalar de Radiologia/organização & administração , Gestão da Segurança/organização & administração , Humanos , Medição de Risco , Gestão de Riscos
13.
Radiographics ; 30(7): 1935-53, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-21057128

RESUMO

Intraoperative ultrasonography (US) of the pancreas is a versatile technique that provides excellent spatial and contrast resolution and real-time imaging capabilities, making it useful for diagnostic imaging as well as for guidance of laparoscopic and open operative procedures. Intraoperative US may be used for applications such as staging and localizing tumors; performing regional metastatic surveys; documenting arterial and venous patency; identifying endocrine tumors; distinguishing pancreatitis from a neoplasm; and guiding biopsy, duct cannulation, and drainage of abscesses or cysts. The scanning approach and technique vary according to the application, with many different equipment and transducer options and sterilization methods available. With increasing clinical demands for intraoperative US, it is essential that radiologists be familiar with its uses and technique. In addition, to properly perform intraoperative US and accurately interpret the images, knowledge of normal and variant pancreatic and vascular anatomy and relevant landmarks is needed. Supplemental material available at http://radiographics.rsna.org/lookup/suppl/doi:10.1148/rg.307105051/-/DC1.


Assuntos
Pâncreas/diagnóstico por imagem , Pâncreas/cirurgia , Pancreatectomia/métodos , Pancreatopatias/diagnóstico por imagem , Pancreatopatias/cirurgia , Cirurgia Assistida por Computador/métodos , Ultrassonografia/métodos , Humanos
14.
Radiographics ; 30(1): 23-31, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19901086

RESUMO

As computed tomographic (CT) colonography is being used increasingly in clinical practice, an effective quality improvement process must be ensured. The quality improvement process is outlined for the reader by using an adverse event during CT colonography as an example. Components of this process are the approach to a sentinel event, performance of a root cause analysis, and development of strategies for minimizing errors after a serious adverse event. Important factors include indications and contraindications for the examination, proper imaging technique, training of personnel, complications of the procedure, and legal implications. Complications from CT colonography are rare. Attention must be paid to the correct technique for colonic insufflation, particularly in older patients and those who are symptomatic. Root cause analysis provides valuable tools for identification and implementation of improvements designed to avoid similar and other adverse events and to minimize damage.


Assuntos
Colonografia Tomográfica Computadorizada/efeitos adversos , Perfuração Intestinal/etiologia , Perfuração Intestinal/prevenção & controle , Notificação de Abuso , Erros Médicos/prevenção & controle , Garantia da Qualidade dos Cuidados de Saúde/organização & administração , Gestão de Riscos/organização & administração , Idoso de 80 Anos ou mais , Boston , Feminino , Humanos , Perfuração Intestinal/diagnóstico por imagem , Garantia da Qualidade dos Cuidados de Saúde/métodos , Gestão de Riscos/métodos , Gestão de Riscos/normas
15.
Radiology ; 250(2): 453-8, 2009 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-19164697

RESUMO

PURPOSE: To retrospectively assess factors affecting the success of ultrasonographically (US)-guided core liver biopsy of focal lesions on the basis of experience when both cytologic and pathologic examination results were available. MATERIALS AND METHODS: This HIPAA-compliant retrospective study was granted an exemption from the institutional review board. All percutaneous US-guided biopsies of focal liver lesions performed at one institution from January 2000 through February 2006 for which both cytologic and pathologic examination results were available were included. Specimen adequacy was determined with on-site cytologic examination performed with a "touch prep" technique. Of 1910 liver biopsies, 240 (12.6%) revealed focal lesions, and cytologic and pathologic examination results were available for 208 (86.7%) of these 240 lesions. The number of biopsy passes and concordance between cytologic and pathologic findings were evaluated, and correlation between lesion size, type, and location and the number of passes was assessed. The Pearson correlation chi(2) test and the Wilcoxon test were used. RESULTS: Biopsy specimens were diagnostic in 205 cases (98.6%) and were nondiagnostic in three cases (1.4%); 85.9% of the lesions were malignant. There was a single lesion in 89 patients (42.8%), and there were multiple lesions in 119 patients (57.2%). One biopsy pass was sufficient in 58 patients (27.9%); two passes were sufficient in 75 patients (36.1%); and three, four, five, and six passes were sufficient in 51 (24.5%), 17 (8.2%), five (2.4%), and two (1.0%) patients, respectively. There was no relationship between lesion size or location and the number of passes, according to the Pearson correlation and chi(2) test (P = .16 and P = .22, respectively). On average, 1.9 passes were required for metastatic lesions, versus 2.8 for nonmetastatic lesions (P < .001, Wilcoxon test). Cytologic and histopathologic findings were discordant in 25 cases (12.0%). CONCLUSION: The size and location of liver lesions sampled for biopsy do not influence the number of passes needed, while metastatic lesions require fewer passes. Without the on-site cytologic examination service, a predetermined number of three passes would be diagnostic in almost 90% of all cases.


Assuntos
Biópsia por Agulha/métodos , Hepatopatias/patologia , Ultrassonografia de Intervenção , Adulto , Idoso , Idoso de 80 Anos ou mais , Distribuição de Qui-Quadrado , Feminino , Humanos , Hepatopatias/diagnóstico por imagem , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Estatísticas não Paramétricas
16.
Radiographics ; 29(1): 211-29, 2009.
Artigo em Inglês | MEDLINE | ID: mdl-19168846

RESUMO

Myriad benign tumors may be found in the liver; they can be classified according to their cell of origin into tumors of hepatocellular, cholangiocellular, or mesenchymal origin. Common benign hepatic tumors may pose a diagnostic dilemma when they manifest with atypical imaging features. Less frequently encountered benign hepatic tumors such as inflammatory pseudotumor or biliary cystadenoma demonstrate less specific imaging features; however, awareness of their findings is useful in narrowing differential diagnostic considerations. In addition, certain iatrogenically induced abnormalities of the liver may be confused with more ominous findings such as infection or neoplasia. However, knowledge of their common imaging appearances, in addition to the clinical history, is critical in correctly diagnosing and characterizing iatrogenic abnormalities of the liver. Familiarity with both expected and unexpected imaging appearances of common benign hepatic tumors, less commonly encountered benign hepatic tumors, and iatrogenic abnormalities potentially masquerading as hepatic tumors allows the radiologist to achieve an informed differential diagnosis.


Assuntos
Granuloma de Células Plasmáticas/diagnóstico , Neoplasias Hepáticas/diagnóstico , Imageamento por Ressonância Magnética/métodos , Tomografia Computadorizada por Raios X/métodos , Feminino , Humanos , Masculino
17.
Radiographics ; 28(5): 1237-50, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18603662

RESUMO

Many local and national regulatory organizations require that all serious adverse events be promptly investigated, managed, and reported, with the first goal being to institute actions to prevent or minimize the occurrence of similar events. However, the tools and processes necessary for effective incident review and management have been developed largely by industrial organizations, and radiologists may not be familiar with such processes. Data analysis requires a root cause analysis to identify all possible active and latent contributors to the event, as well as the use of algorithms to determine the degree of responsibility when human error is implicated. Acceptable corrective actions that are reasonable, achievable, and measurable should be instituted. These changes should be monitored according to defined timelines by a designated person. In some cases, additional training or even remediation may be required. Subsequently, the focus should be on actively managing and improving error detection and reporting systems, as well as on seeking strategies for minimizing the occurrence of preventable errors.


Assuntos
Erros Médicos/prevenção & controle , Guias de Prática Clínica como Assunto , Garantia da Qualidade dos Cuidados de Saúde/organização & administração , Serviço Hospitalar de Radiologia/organização & administração , Gestão de Riscos/organização & administração , Garantia da Qualidade dos Cuidados de Saúde/métodos , Estados Unidos
18.
AJR Am J Roentgenol ; 191(1): 133-9, 2008 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-18562736

RESUMO

OBJECTIVE: The objective of our study was to determine whether perfusion CT can be used to detect early changes in therapeutic response to antiangiogenic therapy in an animal tumor model. MATERIALS AND METHODS: Twenty-five rats implanted with R3230 mammary adenocarcinoma (diameter, 1.2-2.0 cm) randomly received 7.5 or 30 mg/kg of an antiangiogenic agent, sorafenib, by daily gavage for 4 (n = 4), 9 (n = 9), or 14 (n = 5) days. Seven untreated animals served as a control group. Perfusion MDCT was performed at days 0, 4, 9, and 14 with 0.4 mL of ioversol (350 mg/mL) and included four 5-mm slices covering the entire tumor volume. Changes in tumor growth were determined by volumetric analysis of CT data. Serial changes in tumor volume and blood flow were assessed and correlated with pathology findings. RESULTS: All control tumors grew larger (from 2.0 +/- 0.7 cm(3) at day 0 to 5.9 +/- 1.0 cm(3) at day 14), whereas all treated tumors shrank (from 2.5 +/- 1.1 to 2.1 +/- 1.0 cm(3)), with a statistically significant rate of growth or shrinkage in both groups (p < 0.05). Although perfusion in the control tumors changed little from day 0 to day 14 (day 0, 18.1 +/- 9.2 mL/min/100 g; day 4, 15.8 +/- 5.6; day 9, 21.7 +/- 12.2; day 14, 27.7 +/- 34), in the sorafenib group, the mean blood flow was significantly lower at day 4 (5.2 +/- 3.2 mL/min/100 g, 77% decrease), day 9 (6.4 +/- 4.0 mL/min/100 g, 66% decrease), and day 14 (6.3 +/- 5.2 mL/min/100 g, 83% decrease) compared with day 0 (23.8 +/- 11.6 mL/min/100 g) (p < 0.05). Poor correlation was seen between changes in blood flow and tumor volume for days 0-9 (r(2) = 0.34), 4-9 (r(2) = 0.0004), and 9-14 (r(2) = 0.16). However, when comparing day 4 images with days 9 and 14 images, seven of 14 (50%) sorafenib-treated tumors had focal areas of new perfusion that correlated with areas of histopathologic viability despite the fact that these tumors were shrinking in size from day 4 onward (day 4, 2.18 +/- 0.8 cm(3); day 9, 1.98 +/- 0.8 cm(3)). CONCLUSION: Perfusion MDCT can detect focal blood flow changes even when the tumor is shrinking, possibly indicating early reversal of tumor responsiveness to antiangiogenic therapy. Given that changes in tumor volume after antiangiogenic therapy do not necessarily correlate with true treatment response, physiologic imaging of tumor perfusion may be necessary.


Assuntos
Benzenossulfonatos/administração & dosagem , Neoplasias Mamárias Experimentais/diagnóstico por imagem , Neoplasias Mamárias Experimentais/tratamento farmacológico , Avaliação de Resultados em Cuidados de Saúde/métodos , Piridinas/administração & dosagem , Tomografia Computadorizada por Raios X/métodos , Inibidores da Angiogênese/administração & dosagem , Animais , Antineoplásicos/administração & dosagem , Feminino , Niacinamida/análogos & derivados , Perfusão/métodos , Compostos de Fenilureia , Prognóstico , Ratos , Sorafenibe , Resultado do Tratamento
19.
Radiographics ; 28(3): 623-38, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18480475

RESUMO

The evaluation of oncology patients represents a substantial volume of the workload in many radiology departments. Interpreting the results of oncologic examinations is often challenging and time-consuming because many abnormalities are identified in the same examination and must be compared with the findings in previous studies. However, errors in the interpretation of oncologic computed tomographic (CT) scans can have significant effects on patient care. These effects may range from withdrawal from a clinical trial or cessation of therapy to repeat CT examination because of a technically inadequate study, CT-guided biopsy of newly identified lesions, or initiation of therapy for previously unrecognized lesions. A root cause analysis of reported errors in the interpretation of abdominal and pelvic CT scans led to the identification of potential pitfalls that may be encountered when interpreting oncologic CT scans and factors that contribute to these errors. Awareness of the spectrum of factors that contribute to misinterpretation of CT scans in oncology patients may improve the performance of the individual radiologist and ultimately translate into improved patient care.


Assuntos
Neoplasias Abdominais/diagnóstico por imagem , Erros de Diagnóstico/prevenção & controle , Garantia da Qualidade dos Cuidados de Saúde/normas , Radiografia Abdominal/normas , Tomografia Computadorizada por Raios X/normas , Humanos , Guias de Prática Clínica como Assunto/normas , Radiografia Abdominal/métodos , Tomografia Computadorizada por Raios X/métodos , Estados Unidos
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