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2.
Acad Radiol ; 31(2): 438-445, 2024 02.
Artículo en Inglés | MEDLINE | ID: mdl-38401990

RESUMEN

This paper describes the innovative approach of using liberating structures to the development of the AUR 2023 strategic plan, and lessons learned in their application. The 2023 strategic plan built on the results and approach of the prior 2015 plan. Similar to the 2015 strategic plan, traditional tools such as a SWOT analysis and strategic retreat were used. In addition, the 2023 process included tools called liberating structures and was iteratively co-produced through a series of virtual meetings over 18 months. Advantages of liberating structures included increased creativity and speed in moving through meeting tasks, increased number of meaningful contributions from AUR members and increased engagement from participants during discussions and meetings. The 2023 AUR strategic plan is provided along with examples of completed goals and those under early implementation. Lessons learned from using these tools for strategic planning can be applied to other society and group meetings. Moving forward, the 2023 strategic plan will be a living document, which will be reviewed at each Board of Directors meeting and periodically adapted.


Asunto(s)
Planificación Estratégica , Humanos , Objetivos Organizacionales
3.
Radiographics ; 43(12): e230139, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38032820

RESUMEN

Electronic consultations (e-consults) mediated through an electronic health record system or web-based platform allow synchronous or asynchronous physician-to-physician communication. E-consults have been explored in various clinical specialties, but relatively few instances in the literature describe e-consults to connect health care providers directly with radiologists.The authors outline how a radiology department can implement an e-consult service and review the development of such a service in a large academic health system. They describe the logistics, workflow, turnaround time expectations, stakeholder management, and pilot implementation and highlight challenges and lessons learned.


Asunto(s)
Mejoramiento de la Calidad , Radiología , Humanos , Derivación y Consulta , Programas Informáticos , Comunicación
4.
J Am Coll Radiol ; 20(10): 962-968, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37597716

RESUMEN

There is a growing emphasis on population health management (PHM) in the United States, in part because it has the worst health outcomes indices among high-income countries despite spending by far the most on health care. Successful PHM is expected to lead to a healthier population with reduced health care utilization and cost. The role of radiology in PHM is increasingly being recognized, including efforts in care coordination, secondary prevention, and appropriate imaging utilization, among others. To further discuss economic considerations for PHM, we must understand the evolving health care payer environment, which combines fee-for-service and increasingly, an alternative payment model framework developed by the Health Care Payment Learning and Action Network. In considering the term "value-based care," perceived value needs to accrue to those who ultimately pay for care, which is more commonly employers and the government. This perspective drives the design of alternative payment models and thus should be taken into consideration to ensure sustainable practice models.


Asunto(s)
Gestión de la Salud Poblacional , Radiología , Estados Unidos , Mecanismo de Reembolso , Planes de Aranceles por Servicios , Atención a la Salud
5.
J Am Coll Radiol ; 20(12): 1258-1266, 2023 12.
Artículo en Inglés | MEDLINE | ID: mdl-37390881

RESUMEN

PURPOSE: The aim of this study was to assess appropriateness scoring and structured order entry after the implementation of an artificial intelligence (AI) tool for analysis of free-text indications. METHODS: Advanced outpatient imaging orders in a multicenter health care system were recorded 7 months before (March 1, 2020, to September 21, 2020) and after (October 20, 2020, to May 13, 2021) the implementation of an AI tool targeting free-text indications. Clinical decision support score (not appropriate, may be appropriate, appropriate, or unscored) and indication type (structured, free-text, both, or none) were assessed. The χ2 and multivariate logistic regression adjusting for covariables with bootstrapping were used. RESULTS: In total, 115,079 orders before and 150,950 orders after AI tool deployment were analyzed. The mean patient age was 59.3 ± 15.5 years, and 146,035 (54.9%) were women; 49.9% of orders were for CT, 38.8% for MR, 5.9% for nuclear medicine, and 5.4% for PET. After deployment, scored orders increased to 52% from 30% (P < .001). Orders with structured indications increased to 67.3% from 34.6% (P < .001). On multivariate analysis, orders were more likely to be scored after tool deployment (odds ratio [OR], 2.7, 95% CI, 2.63-2.78; P < .001). Compared with physicians, orders placed by nonphysician providers were less likely to be scored (OR, 0.80; 95% CI, 0.78-0.83; P < .001). MR (OR, 0.84; 95% CI, 0.82-0.87) and PET (OR, 0.12; 95% CI, 0.10-0.13) were less likely to be scored than CT (; P < .001). After AI tool deployment, 72,083 orders (47.8%) remained unscored, 45,186 (62.7%) with free-text-only indications. CONCLUSIONS: Embedding AI assistance within imaging clinical decision support was associated with increased structured indication orders and independently predicted a higher likelihood of scored orders. However, 48% of orders remained unscored, driven by both provider behavior and infrastructure-related barriers.


Asunto(s)
Sistemas de Apoyo a Decisiones Clínicas , Sistemas de Entrada de Órdenes Médicas , Humanos , Femenino , Adulto , Persona de Mediana Edad , Anciano , Masculino , Inteligencia Artificial , Diagnóstico por Imagen , Cintigrafía
6.
J Am Coll Radiol ; 20(3): 377-384, 2023 03.
Artículo en Inglés | MEDLINE | ID: mdl-36922113

RESUMEN

Quality patient care and advancements in medical education, investigation, and innovation require effective teamwork. High-functioning teams navigate stressful environments, learning openly from failures and leveraging successes to fuel future initiatives. The authors review foundational concepts for implementing and sustaining successful teams, including emotional intelligence, trust, inclusivity, clear communication, and accountability. Focus is given to real-world examples and actionable, practical solutions.


Asunto(s)
Educación Médica , Calidad de la Atención de Salud , Humanos , Grupo de Atención al Paciente , Aprendizaje
7.
JAMA Netw Open ; 5(6): e2216370, 2022 06 01.
Artículo en Inglés | MEDLINE | ID: mdl-35679042

RESUMEN

Importance: The American College of Radiology (ACR) Ovarian-Adnexal Reporting and Data System (O-RADS) ultrasound (US) risk scoring system has been studied in a selected population of women referred for suspected or known adnexal lesions. This population has a higher frequency of malignant neoplasms than women presenting to radiology departments for pelvic ultrasonography for a variety of indications, potentially impacting the diagnostic performance of the risk scoring system. Objective: To evaluate the risk of malignant neoplasm and diagnostic performance of O-RADS US risk scoring system in a multi-institutional, nonselected cohort. Design, Setting, and Participants: This multi-institutional cohort study included a population of nonselected women in the United States who presented to radiology departments for routine pelvic ultrasonography between 2011 and 2014, with pathology confirmation imaging follow up or 2 years of clinical follow up. Exposure: Analysis of 1014 adnexal lesions using the O-RADS US risk stratification system. Main Outcomes and Measures: Frequency of ovarian cancer and diagnostic performance of the O-RADS US risk stratification system. Results: This study included 913 women with 1014 adnexal lesions. The mean (SD) age of the patients was 42.4 (13.9 years), and 674 of 913 (73.8%) were premenopausal. The overall frequency of malignant neoplasm was 8.4% (85 of 1014 adnexal lesions). The frequency of malignant neoplasm for O-RADS US 2 was 0.5% (3 of 657 lesions; <1% expected); O-RADS US 3, 4.5% (5 of 112 lesions; <10% expected); O-RADS US 4, 11.6% (18 of 155; 10%-50% expected); and O-RADS 5, 65.6% (59 of 90 lesions; >50% expected). O-RADS US 4 was the optimum cutoff for diagnosing cancer with sensitivity of 90.6% (95% CI, 82.3%-95.9%), specificity of 81.9% (95% CI, 79.3%-84.3%), positive predictive value of 31.4% (95% CI, 25.7%-37.7%) and negative predictive value of 99.0% (95% CI, 98.0%-99.6%). Conclusions and Relevance: In this cohort study of a nonselected patient population, the O-RADS US risk stratification system performed within the expected range as published by the ACR O-RADS US committee. The frequency of malignant neoplasm was at the lower end of the published range, partially because of the lower prevalence of cancer in a nonselected population. However, a high negative predictive value was maintained, and when a lesion can be classified as an O-RADS US 2, the risk of cancer is low, which is reassuring for both clinician and patient.


Asunto(s)
Neoplasias Ováricas , Adulto , Estudios de Cohortes , Femenino , Humanos , Neoplasias Ováricas/diagnóstico por imagen , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/patología , Valor Predictivo de las Pruebas , Factores de Riesgo , Ultrasonografía/métodos , Estados Unidos/epidemiología
8.
Radiology ; 303(3): 603-610, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35315722

RESUMEN

Background Several US risk stratification schemas for assessing adnexal lesions exist. These multiple-subcategory systems may be more multifaceted than necessary for isolated adnexal lesions in average-risk women. Purpose To explore whether a US-based classification scheme of classic versus nonclassic appearance can be used to help appropriately triage women at average risk of ovarian cancer without compromising diagnostic performance. Materials and Methods This retrospective multicenter study included isolated ovarian lesions identified at pelvic US performed between January 2011 and June 2014, reviewed between September 2019 and September 2020. Lesions were considered isolated in the absence of ascites or peritoneal implants. Lesions were classified as classic or nonclassic based on sonographic appearance. Classic lesions included simple cysts, hemorrhagic cysts, endometriomas, and dermoids. Otherwise, lesions were considered nonclassic. Outcomes based on histopathologic results or clinical or imaging follow-up were recorded. Diagnostic performance and frequency of malignancy were calculated. Frequency of malignancy between age groups was compared using the χ2 test, and Poisson regression was used to explore relationships between imaging features and malignancy. Results A total of 970 isolated lesions in 878 women (mean age, 42 years ± 14 [SD]) were included. The malignancy rate for classic lesions was less than 1%. Of 970 lesions, 53 (6%) were malignant. The malignancy rate for nonclassic lesions was 32% (33 of 103) when blood flow was present and 8% (16 of 194) without blood flow (P < .001). For women older than 60 years, the malignancy rate was 50% (10 of 20 lesions) when blood flow was present and 13% (five of 38) without blood flow (P = .004). The sensitivity, specificity, positive predictive value, and negative predictive value of the classic-versus-nonclassic schema was 93% (49 of 53 lesions), 73% (669 of 917 lesions), 17% (49 of 297 lesions), and 99% (669 of 673 lesions), respectively, for detection of malignancy. Conclusion Using a US classification schema of classic- or nonclassic-appearing adnexal lesions resulted in high sensitivity and specificity in the diagnosis of malignancy in ovarian cancer. The highest risk of cancer was in isolated nonclassic lesions with blood flow in women older than 60 years. © RSNA, 2022 See also the editorial by Baumgarten in this issue.


Asunto(s)
Enfermedades de los Anexos , Quistes , Endometriosis , Quistes Ováricos , Neoplasias Ováricas , Enfermedades de los Anexos/diagnóstico por imagen , Adulto , Carcinoma Epitelial de Ovario , Femenino , Humanos , Neoplasias Ováricas/diagnóstico por imagen , Sensibilidad y Especificidad , Ultrasonografía/métodos
9.
J Am Coll Radiol ; 19(5): 637-646, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35346619

RESUMEN

PURPOSE: The aim of this study was to scale structured report templates categorizing actionable renal findings across health systems and create a centralized registry of patient and report data. METHODS: In January 2017, three academic radiology departments agreed to prospectively include identical structured templates categorizing the malignant likelihood of renal findings in ≥90% of all adult ultrasound, MRI, and CT reports, a new approach for two sites. Between November 20, 2017, and September 30, 2019, deidentified HL7 report data were transmitted to a centralized ACR registry. An automated algorithm extracted categories. Radiologists were requested to addend reports with missing or incomplete templates after the first month. Separately, each site submitted patient sociodemographic and clinical data 12 months before and at least 3 months after enrollment. RESULTS: A total of 164,982 eligible radiology reports were transmitted to the registry; 4,159 (2.5%) were excluded because of missing categories or radiologist names. The final cohort included 160,823 examinations on 102,619 unique patients. Mean template use before and after addendum requests was 99.3% and 99.9% at SITE1, 86.5% and 94.6% at SITE2, and 91.4% and 96.0% at SITE3. Matching patient sociodemographic and clinical data were obtained on 96.9% of reports from SITE1, 94.2% from SITE2, and 96.0% from SITE3. Regulatory, cultural, and technology barriers to the creation of a multisite registry were identified. CONCLUSIONS: Barriers to the adoption of unified structured report templates for actionable kidney findings can be addressed. Deidentified report and patient data can be securely transmitted to an external registry. These data can facilitate the collection of diverse evidence-based population imaging outcomes.


Asunto(s)
Servicio de Radiología en Hospital , Sistemas de Información Radiológica , Adulto , Humanos , Riñón , Imagen por Resonancia Magnética , Sistema de Registros
10.
J Am Coll Radiol ; 18(9): 1324-1331, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-34004175

RESUMEN

OBJECTIVE: To assess current practice patterns with respect to protocols used for incidental pancreatic cyst follow-up, management guidelines, and template reporting. METHODS: The Society of Abdominal Radiology Disease Focused Panel on intraductal pancreatic neoplasms distributed an anonymous 14-question survey to its members in June 2018 that focused on current utilization of incidental pancreatic cyst guidelines, protocols, and template reporting. RESULTS: Among the 1,390 email invitations, 323 responded, and 94.7% (306 of 323) completed all questions. Respondents were mainly radiologists (93.8%, 303 of 323) from academic institutions (74.7%, 227 of 304) in North America (93.7%, 286 of 305). Of respondents, 42.5% (136 of 320) preferred 2017 ACR recommendations, 17.8% (57 of 320) homegrown systems, 15.0% (48 of 320) Fukuoka guidelines, and 7.8% (25 of 320) American Gastroenterological Association guidelines. The majority (68.7%, 222 of 323) agreed or strongly agreed that developing a single international consensus recommendation for management was important, and most radiologists preferred to include them in reports (231 of 322, 71.7%); yet only half included recommendations in >75% of reports (161 of 321). MR cholangiopancreatography was the modality of choice for follow-up of <2.5 cm cysts. Intravenous contrast was routinely used by 69.7% (212 of 304). Standardized reporting templates were rarely used in practice (12.8% 39 of 306). CONCLUSIONS: Nearly 7 of 10 radiologists desire a unified international consensus recommendation for management of incidental cystic pancreatic lesions; ACR 2017 recommendations are most commonly used, followed by homegrown systems and Fukuoka guidelines. The majority of radiologists routinely use MR cholangiopancreatography with intravenous contrast for follow-up of incidental cystic lesions, but template reporting is rarely used.


Asunto(s)
Quiste Pancreático , Neoplasias Pancreáticas , Radiología , Humanos , Hallazgos Incidentales , Quiste Pancreático/diagnóstico por imagen , Quiste Pancreático/terapia , Radiografía Abdominal , Encuestas y Cuestionarios
11.
J Am Coll Radiol ; 18(3 Pt B): 465-466, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33663755
12.
J Am Coll Radiol ; 18(3 Pt B): 467-474, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33663756

RESUMEN

OBJECTIVE: The Protecting Access to Medicare Act of 2014 requires clinicians to consult Appropriate Use Criteria (AUC) when ordering advanced imaging procedures. Free-text order indications are available when there is no applicable structured indication but are unscored by the AUC. We determined the proportion of free-text indications among all advanced imaging orders and the proportion of free-text indications that could be mapped to a single structured indication. METHODS: All outpatient advanced diagnostic imaging orders placed in a large multisite health system were recorded after initial AUC deployment (November 20, 2017, to December 19, 2017). Clinicians were prompted upon order entry to select a structured indication or enter a free-text indication. We manually reviewed the two imaging examinations with the highest rate of free-text indications: enhanced CT abdomen/pelvis and unenhanced CT head. Regression analysis examined differences in patient-, imaging-, context-, and provider-level characteristics between scored and unscored examinations. RESULTS: Among all 39,533 orders for advanced imaging procedures, 59% (23,267 of 39,533) were unscored by the system. The regression model c-statistic (0.50-0.55) demonstrated poor model fit to evaluate for differences between scored and unscored examinations. Free-text indications were found in 71% (16,440 of 23,267) of unscored examinations and 42% (16,440 of 39,533) of all examinations. Manual review of all 1,693 CT abdomen/pelvis and 1,527 CT head examinations with free-text indications revealed that 3,132 free-text indications (97%) could be mapped to a single existing structured indication. DISCUSSION: Of all initially placed outpatient advanced imaging procedure orders, 42% included free-text indications and 97% of manually reviewed free-text indications could be mapped to a single structured indication.


Asunto(s)
Sistemas de Apoyo a Decisiones Clínicas , Epidemias , Sistemas de Entrada de Órdenes Médicas , Anciano , Humanos , Medicare , Tomografía Computarizada por Rayos X , Estados Unidos
13.
J Am Coll Radiol ; 18(7): 951-961, 2021 07.
Artículo en Inglés | MEDLINE | ID: mdl-33726983

RESUMEN

PURPOSE: The aim of this study was to evaluate the effect of Pennsylvania Act 112 notification reading level and presentation on patient understanding and anxiety. METHODS: Four notifications were developed by alternating 12th grade and 6th grade reading level Act 112 language with letters or infographics. Using Amazon Mechanical Turk, 909 US adult volunteers were randomly assigned to one notification followed by a survey. Participants who answered all 12 survey questions on understanding, anxiety, and sociodemographics were paid $0.10. Chi-square analysis and multivariate regression were used to determine the impact of notification type and sociodemographic data on understanding of communicated information and anxiety. RESULTS: Sixty percent of participants (489 of 821) correctly understood all three questions directly answered within notifications regarding Act 112 subject, next steps, and process for obtaining reports. Approximately half of respondents understood that notifications indirectly conveyed "definitely" or "possibly" abnormal test results (344 of 821 [42%] and 99 of 821 [12%], respectively). Compared with the 12th grade letter, correct understanding of all directly communicated information was lower with the 12th grade infographic after adjustment (odds ratio, 0.61; 95% confidence interval, 0.39-0.95; P = .028) and equivalent with the 6th grade infographic and letter (P = .744 and P = .316). Correct indirect understanding of abnormal test results was not associated with notification type after adjustment but was associated with higher anxiety (odds ratio, 2.86; 95% confidence interval, 0.57-1.35; P < .001). CONCLUSIONS: Layperson understanding of information directly and indirectly communicated in Pennsylvania Act 112 is suboptimal, regardless of reading level or presentation. New Act 112 language is needed to improve patient understanding, which would ideally be coproduced with Pennsylvania patients, policymakers, and other relevant stakeholders.


Asunto(s)
Lenguaje , Adulto , Humanos , Pennsylvania , Encuestas y Cuestionarios
14.
Abdom Radiol (NY) ; 46(12): 5758-5762, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-33452899

RESUMEN

PURPOSE: To evaluate gender diversity over time within the leadership and honorees of the Society of Abdominal Radiology with comparison to other radiologic societies. METHODS: This was a retrospective, observational study of the gender distribution of presidents and gold meal awardees within the Society of Abdominal Radiology (SAR) compared to three national radiology organizations: the American College of Radiology (ACR), the American Roentgen Ray Society (ARRS), and the Radiological Society of North America (RSNA). Data were collected from the inception of each society through 2020. Societies were directly contacted for president and Gold Medal awardee names when this information was not available on society websites. Differences in the proportion of female presidents and Gold Medal awardees before and after 2012, by society, were performed using χ2 test; 2012 was selected as a threshold year as this represented when SAR was created. RESULTS: The proportion of female past presidents was 5%, 9%, and 33% for the SGR, SUR, and SAR, respectively, and 5%, 4%, and 7% for the ACR, ARRS, and RSNA, respectively. The proportion of female Gold Medal awardees was 5%, 4%, and 10% for the SGR, SUR, and SAR, respectively, and 5%, 7%, and 7%, respectively, for ACR, ARRS, and RSNA. There was a statistically significant increase in the proportion of women presidents and honorees in all societies after 2012 compared to before 2012, but no significant difference between societies in either time period. CONCLUSION: A higher proportion of female presidents and honorees were demonstrated across all societies after 2012.


Asunto(s)
Liderazgo , Radiología , Femenino , Humanos , América del Norte , Estudios Retrospectivos , Sociedades Médicas , Estados Unidos
15.
J Am Coll Radiol ; 17(12): 1676-1683, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32579883

RESUMEN

OBJECTIVE: Pennsylvania Act 112 requires diagnostic imaging facilities to directly notify outpatients about significant imaging abnormalities that require follow-up care within 3 months. The effects of Act 112 on patient care are unclear. We sought to characterize follow-up discussions and care received by outpatients with significant imaging abnormalities as defined by Act 112. METHODS: We evaluated findings flagged for patient notification under Act 112 at our institution over a 1-month period. We analyzed findings for radiologic reporting, follow-up discussions between patients and ordering providers, and follow-up medical care provided. RESULTS: Follow-up discussions were documented for 87% of findings (n = 205 of 235) and occurred on average 6.0 days after imaging examinations were performed. Follow-up discussions directly attributable to the Act 112 letter occurred in 0.4% of findings. Follow-up care was provided for 74% of findings on average 31.3 days after imaging examinations were performed. Provider-initiated follow-up discussions occurred earlier and were associated with shorter time to follow-up care when compared with patient-initiated discussions. Direct contact of ordering provider by interpreting radiologist was a significant predictor of occurrence of follow-up discussions and length of time to follow-up care. DISCUSSION: Act 112 had a small impact at our institution on improving completed follow-up for abnormal imaging findings. Our results also imply that health systems should encourage timeliness of patient-provider discussions of abnormal imaging findings and facilitate direct radiologist communication with ordering providers. Future studies should evaluate the impact of Act 112 in different practice settings to understand its broader impact on follow-up care.


Asunto(s)
Comunicación , Radiología , Estudios de Seguimiento , Humanos , Pennsylvania , Radiólogos
16.
AJR Am J Roentgenol ; 214(6): 1316-1320, 2020 06.
Artículo en Inglés | MEDLINE | ID: mdl-32208006

RESUMEN

OBJECTIVE. The purpose of this study was to use an online crowdsourcing platform to assess patient comprehension of five radiology reporting templates and radiology colloquialisms. MATERIALS AND METHODS. In this cross-sectional study, participants were surveyed as patient surrogates using a crowdsourcing platform. Two tasks were completed within two 48-hour time periods. For the first crowdsourcing task, each participant was randomly assigned a set of radiology reports in a constructed reporting template and subsequently tested for comprehension. For the second crowdsourcing task, each participant was randomly assigned a radiology colloquialism and asked to indicate whether the phrase indicated a normal, abnormal, or ambivalent finding. RESULTS. A total of 203 participants enrolled for the first task and 1166 for the second within 48 hours of task publication. The payment totaled $31.96. Of 812 radiology reports read, 384 (47%) were correctly interpreted by the patient surrogates. Patient surrogates had higher rates of comprehension of reports written in the patient summary (57%, p < 0.001) and traditional unstructured in combination with patient summary (51%, p = 0.004) formats than in the traditional unstructured format (40%). Most of the patient surrogates (114/203 [56%]) expressed a preference for receiving a full radiology report via an electronic patient portal. Several radiology colloquialisms with modifiers such as "low," "underdistended," and "decompressed" had low rates of comprehension. CONCLUSION. Use of the crowdsourcing platform is an expeditious, cost-effective, and customizable tool for surveying laypeople in sentiment- or task-based research. Patient summaries can help increase patient comprehension of radiology reports. Radiology colloquialisms are likely to be misunderstood by patients.


Asunto(s)
Comprensión , Colaboración de las Masas , Diagnóstico por Imagen , Pacientes/psicología , Terminología como Asunto , Adolescente , Adulto , Anciano , Estudios Transversales , Femenino , Humanos , Masculino , Persona de Mediana Edad
17.
J Digit Imaging ; 33(1): 131-136, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-31482317

RESUMEN

While radiologists regularly issue follow-up recommendations, our preliminary research has shown that anywhere from 35 to 50% of patients who receive follow-up recommendations for findings of possible cancer on abdominopelvic imaging do not return for follow-up. As such, they remain at risk for adverse outcomes related to missed or delayed cancer diagnosis. In this study, we develop an algorithm to automatically detect free text radiology reports that have a follow-up recommendation using natural language processing (NLP) techniques and machine learning models. The data set used in this study consists of 6000 free text reports from the author's institution. NLP techniques are used to engineer 1500 features, which include the most informative unigrams, bigrams, and trigrams in the training corpus after performing tokenization and Porter stemming. On this data set, we train naive Bayes, decision tree, and maximum entropy models. The decision tree model, with an F1 score of 0.458 and accuracy of 0.862, outperforms both the naive Bayes (F1 score of 0.381) and maximum entropy (F1 score of 0.387) models. The models were analyzed to determine predictive features, with term frequency of n-grams such as "renal neoplasm" and "evalu with enhanc" being most predictive of a follow-up recommendation. Key to maximizing performance was feature engineering that extracts predictive information and appropriate selection of machine learning algorithms based on the feature set.


Asunto(s)
Procesamiento de Lenguaje Natural , Radiología , Teorema de Bayes , Estudios de Seguimiento , Humanos , Aprendizaje Automático
19.
Curr Opin Microbiol ; 52: 158-164, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-31765991

RESUMEN

Increasing resistance to frontline antifungals is a growing threat to global health. In the face of high rates of relapse for patients with cryptococcal meningitis and frequent drug resistance in clinical isolates, recent insights into Cryptococcus neoformans morphogenesis and genome plasticity take on new and urgent meaning. Here we review the state of the understanding of mechanisms of drug resistance in the context of host-relevant changes in Cryptococcus morphology and cell ploidy.


Asunto(s)
Antifúngicos/farmacología , Criptococosis/tratamiento farmacológico , Cryptococcus neoformans/efectos de los fármacos , Cryptococcus neoformans/genética , Farmacorresistencia Fúngica Múltiple , Humanos , Meningitis Criptocócica/tratamiento farmacológico , Pruebas de Sensibilidad Microbiana , Infecciones del Sistema Respiratorio/microbiología
20.
J Digit Imaging ; 32(4): 554-564, 2019 08.
Artículo en Inglés | MEDLINE | ID: mdl-31218554

RESUMEN

Unstructured and semi-structured radiology reports represent an underutilized trove of information for machine learning (ML)-based clinical informatics applications, including abnormality tracking systems, research cohort identification, point-of-care summarization, semi-automated report writing, and as a source of weak data labels for training image processing systems. Clinical ML systems must be interpretable to ensure user trust. To create interpretable models applicable to all of these tasks, we can build general-purpose systems which extract all relevant human-level assertions or "facts" documented in reports; identifying these facts is an information extraction (IE) task. Previous IE work in radiology has focused on a limited set of information, and extracts isolated entities (i.e., single words such as "lesion" or "cyst") rather than complete facts, which require the linking of multiple entities and modifiers. Here, we develop a prototype system to extract all useful information in abdominopelvic radiology reports (findings, recommendations, clinical history, procedures, imaging indications and limitations, etc.), in the form of complete, contextualized facts. We construct an information schema to capture the bulk of information in reports, develop real-time ML models to extract this information, and demonstrate the feasibility and performance of the system.


Asunto(s)
Registros Electrónicos de Salud , Aprendizaje Automático , Sistemas de Información Radiológica , Minería de Datos , Humanos , Procesamiento de Lenguaje Natural
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