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1.
Radiat Prot Dosimetry ; 185(4): 409-413, 2019 Dec 31.
Artigo em Inglês | MEDLINE | ID: mdl-30864671

RESUMO

The International Commission on Radiological Protection has substantially reduced the recommended maximum annual eye lens dose for workers. Use of a dedicated eye dosemeter is one method for accurate dose monitoring. The main aim of this study was to yield recommendations for optimal placement of eye dosemeters to estimate the eye dose to interventional cardiology physicians and nurses. A phantom measurement was conducted to simulate typical interventional cardiology procedures. Considering eight X-ray tube angulations, the left side of the head position provide good estimates for physician, and the forehead position provide good estimates for nurse.


Assuntos
Exposição Ocupacional/análise , Imagens de Fantasmas , Doses de Radiação , Exposição à Radiação/análise , Monitoramento de Radiação/instrumentação , Radiologia Intervencionista/métodos , Antropometria , Cardiologia/métodos , Humanos , Cristalino/efeitos da radiação , Enfermeiras e Enfermeiros , Médicos , Dosímetros de Radiação , Monitoramento de Radiação/métodos , Proteção Radiológica , Raios X
2.
Acta Radiol ; 50(5): 474-81, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19353341

RESUMO

Cardiac interventional radiology has lower risks than surgical procedures. This is despite the fact that radiation doses from cardiac intervention procedures are the highest of any commonly performed general X-ray examination. Maximum radiation skin doses (MSDs) should be determined to avoid radiation-associated skin injuries in patients undergoing cardiac intervention procedures. However, real-time evaluation of MSD is unavailable for many cardiac intervention procedures. This review describes methods of determining MSD during cardiac intervention procedures. Currently, in most cardiac intervention procedures, real-time measuring of MSD is not feasible. Thus, we recommend that physicians record the patient's total entrance skin dose, such as the dose at the interventional reference point when it can be monitored, in order to estimate MSD in intervention procedures.


Assuntos
Cardiopatias/terapia , Doses de Radiação , Monitoramento de Radiação/métodos , Radiografia Intervencionista/métodos , Cardiopatias/diagnóstico por imagem , Cardiopatias/cirurgia , Humanos , Pele/efeitos da radiação
3.
Acta Radiol ; 50(2): 170-3, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19096953

RESUMO

BACKGROUND: Currently, one or two dosimeters are used to monitor radiation exposure in most cardiac laboratories. In addition, several different formulas are used to convert exposure data into an effective dose (ED). PURPOSE: To clarify the effect of monitoring methods and formula selection on the estimated ED for physicians during percutaneous coronary interventions (PCIs). MATERIAL AND METHODS: The ED of physicians during cardiac catheterization was determined using an optically stimulated luminescence dosimeter (Luxel badge). Two Luxel badges were worn: one beneath a personal lead apron (0.35-mm lead equivalent) at the chest and one outside of the apron at the neck. RESULTS: The difference in the average ED of seven physicians was approximately fivefold (range 1.13-5.43 mSv/year) using the six different formulas in the clinical evaluation. The estimated physician ED differed markedly according to both the monitoring method and formula selected. CONCLUSION: ED estimation is dependent on both the monitoring method and the formula used. Therefore, it is important that comparisons among laboratories are based on the same monitoring method and same formula for calculating the ED.


Assuntos
Cateterismo Cardíaco , Exposição Ocupacional , Médicos , Doses de Radiação , Monitoramento de Radiação/métodos , Radiografia Intervencionista/efeitos adversos , Humanos , Matemática , Proteção Radiológica , Radiometria/métodos
4.
Acta Radiol ; 48(8): 846-50, 2007 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17924214

RESUMO

BACKGROUND: A number of cases involving radiation-associated patient skin injury attributable to percutaneous coronary intervention (PCI) have been reported. Knowledge of the location and area of the patient's maximum skin dose (MSD) in PCI is necessary to reduce the risk of skin injury. PURPOSE: To determine the location and area of the MSD in PCI, and separately analyze the effects of different target vessels. MATERIAL AND METHODS: 197 consecutive PCI procedures were studied, and the location and area of the MSD were calculated by a skin-dose mapping software program: Caregraph. The target vessels of the PCI procedures were divided into four groups based on the American Heart Association (AHA) classification. RESULTS: The sites of the MSD for AHA #1-3, AHA #4, and AHA #11-15 were located mainly on the right back skin, the lower right or center back skin, and the upper back skin areas, respectively, whereas the MSD sites for the AHA #5-10 PCI were widely spread. The MSD area for the AHA #4 PCI was larger than that for the AHA #11-15 PCI (P<0.0001). CONCLUSION: Although the radiation associated with PCI can be widely spread and variable, we observed a tendency regarding the location and area of the MSD when we separately analyzed the data for different target vessels. We recommend the use of a smaller radiation field size and the elimination of overlapping fields during PCI.


Assuntos
Angiografia Coronária , Monitoramento de Radiação/métodos , Pele/efeitos da radiação , Idoso , Angioplastia Coronária com Balão , Fluoroscopia , Humanos , Pessoa de Meia-Idade , Doses de Radiação , Radiografia Intervencionista
5.
Acta Radiol ; 46(4): 386-90, 2005 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16134315

RESUMO

PURPOSE: To determine the clinical feasibility of rapid-sequence phosphorus-31 magnetic resonance spectroscopy (31P-MRS) of the heart with cardiac patients using a 1.5T clinical MR system. MATERIAL AND METHODS: Twenty cardiac patients, i.e. dilated cardiomyopathy (DCM) 13 cases, hypertrophic cardiomyopathy (HCM) 3 cases, hypertensive heart diseases (HHD) 3 cases, and aortic regurgitation (AR) 1 case were examined using rapid cardiac 31P-MRS. Complete three-dimensional localization was performed using a two-dimensional phosphorus chemical-shift imaging sequence in combination with 30-mm axial slice-selective excitation. The rapid-sequence 31P-MRS procedure was phase encoded in arrays of 8 x 8 steps with an average of 4 acquisitions. The total examination time, including proton imaging and shimming, for the rapid cardiac 31P-MRS procedure, ranged from 10 to 15 min, depending on the heart rate. Student's t test was used to compare creatine phosphate (PCr)/adenosine triphosphate (ATP) ratios from the cardiac patients with those of the control subjects (n = 13). RESULTS: The myocardial PCr/ATP ratio obtained by rapid 31P-MRS was significantly lower (P < 0.001) in DCM patients (1.82 +/- 0.33, mean +/- SD), and in patients with global myocardial dysfunction (combined data for 20 patients: 1.89 +/- 0.32) than in normal volunteers (2.96 +/- 0.59). These results are similar to previous studies. CONCLUSION: Rapid-sequence 31P-MRS may be a valid diagnostic tool for patients with cardiac disease.


Assuntos
Técnicas de Diagnóstico Cardiovascular , Cardiopatias/diagnóstico , Espectroscopia de Ressonância Magnética/métodos , Miocárdio/metabolismo , Trifosfato de Adenosina/análise , Trifosfato de Adenosina/metabolismo , Eletrocardiografia/métodos , Estudos de Viabilidade , Feminino , Cardiopatias/metabolismo , Humanos , Imageamento Tridimensional/métodos , Masculino , Pessoa de Meia-Idade , Fosfocreatina/análise , Fosfocreatina/metabolismo , Isótopos de Fósforo , Valores de Referência , Sensibilidade e Especificidade , Fatores de Tempo
6.
Acta Radiol ; 46(8): 810-4, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16392605

RESUMO

PURPOSE: To present a novel method for analyzing the voltage waveform from high-frequency X-ray generators for radiographic systems. MATERIAL AND METHODS: The output signal of the actual voltage across the tube of a high-frequency generator was measured using the built-in voltage sense taps that are used for voltage regulation feedback in X-ray generators. The output signal was stored in an analyzing recorder, and the waveforms were analyzed using FFT analysis. The FFT analysis of high-frequency generators consisted of obtaining the power spectrum, comparing the major frequency components in the tube voltage waveforms, and examining the intensity of each frequency component. RESULTS: FFT analysis enables an objective comparison of the complex tube voltage waveforms in high-frequency X-ray generators. FFT analysis detected the change in the X-ray tube voltage waveform that occurred when there were problems with the high-frequency generator. CONCLUSION: High-frequency X-ray generators are becoming the universal choice for radiographic systems. The X-ray tube voltage and its waveform are important features of an X-ray generator, and quality assurance (QA) is important, too. As a tool for engineers involved in the design and development of X-ray generators, we can see that our methods (FFT analysis) might have some value as a means of describing generator performance under varying conditions. Furthermore, since the X-ray tube voltage waveform of a high-frequency generator is complex, FFT analysis may be useful for QA of the waveform.


Assuntos
Eletricidade , Análise de Fourier , Radiografia/instrumentação , Radiometria/métodos , Algoritmos , Humanos , Garantia da Qualidade dos Cuidados de Saúde/métodos , Reprodutibilidade dos Testes
7.
Acta Radiol ; 45(1): 30-7, 2004 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15164776

RESUMO

PURPOSE: To compare a 'standard' slow phosphorus-31 magnetic resonance spectroscopy (31P-MRS) sequence with two faster sequences in phantoms and healthy volunteers using a 1.5-T clinical system. MATERIAL AND METHODS: Complete 3D localization was performed using a 2D phosphorus chemical-shift imaging sequence in combination with 30-mm axial slice-selective excitation. Two 31P-MRS rapid sequences (RS8-4: 8 x 8 phase-encoding, with an average of 4 acquisitions, and RS16-1: 16 x 16 phase-encoding, 1 acquisition) were compared with the standard sequence (StdP: 16 x 16 phase-encoding, with an average of 8 acquisitions) in phantom and healthy volunteers. RESULTS: Acquisition time for the 31P-MRS procedure with StdP, RS8-4, and RS16-1 in the healthy volunteer studies ranged from 30 to 45, 3 to 5, and 3 to 5 minutes, respectively. Metabolite measurements of healthy volunteers obtained from 31P-MRS using RS8-4 correlated with values obtained using StdP (PCr r2=0.63, P<0.001; ATP r=0.41, P<0.01 and PCr/ATP ratio r2=0.25, P<0.05). There was no correlation between StdP and RS16-1 for either ATP or the PCr/ATP ratio (r2=0.03, P=0.60, and r2=0.11, p=0.26, respectively). Reproducibility (intensity of phosphorus signal) with RS16-1 was worse than that of RS8-4 or StdP. CONCLUSION: 31P-MRS using RS8-4 may be a valid diagnostic tool for patients with cardiac diseases.


Assuntos
Coração/diagnóstico por imagem , Espectroscopia de Ressonância Magnética , Adulto , Humanos , Masculino , Imagens de Fantasmas , Fósforo , Cintilografia , Fatores de Tempo
8.
Jpn J Thorac Cardiovasc Surg ; 49(5): 330-2, 2001 May.
Artigo em Inglês | MEDLINE | ID: mdl-11431956

RESUMO

We present a case with asymptomatic mediastinal bronchial artery aneurysm at the origin of the left bronchial artery. This bronchial artery aneurysm was successfully treated with percutaneous transluminal coil embolization. Complete embolization of the feeding artery and tributaries from the aneurysm is the key to successful isolation of a large bronchial artery aneurysm from the circulation. Percutaneous transluminal embolization is one of the treatment options for a patient with asymptomatic, incidentally-identified bronchial artery aneurysm.


Assuntos
Aneurisma/terapia , Artérias Brônquicas , Embolização Terapêutica/métodos , Feminino , Humanos , Pessoa de Meia-Idade
9.
Comput Methods Programs Biomed ; 66(1): 105-10, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11378231

RESUMO

A few studies have been reported that CT cine viewing on the CRT is superior to film-based viewing of CT images (Seltzer et al., Radiology 197 (1994) 119; Bonaldi et al., Am. J. Roentgenol. 170 (1998) 373; Tillich et al., Am. J. Roentgenol. 169 (1997) 1611). The purpose of our study is to know how to use cine viewing of abdominal CT. Thirty CT studies on the abdomen with both precontrast and postcontrast images were examined. The suitable rate of cine viewing ranged from 1 to 6 frames per second according to the size, the contrast and the complexity of the anatomical structures, and the slice thickness. For small or complex structures, checking each image might be required to know the full detail of them. Positional sorting among multiphase images, which is followed by consecutive display of a precontrast image, postcontrast early and late phase images at one position and so on, is useful to see the dynamic pattern of enhancement of the anatomical structures. However, there was no significant difference between cine viewing and film-based viewing concerning both the detectability of the anatomical structures and the conspicuity of enhancement of the liver and the pancreas, so that cine viewing might be an alternative to film-based viewing for CT diagnosis of the abdomen.


Assuntos
Intensificação de Imagem Radiográfica/métodos , Radiografia Abdominal/métodos , Tomografia Computadorizada por Raios X/métodos , Abdome/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
10.
Tohoku J Exp Med ; 190(3): 169-76, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10778800

RESUMO

Quantitative digital subtraction angiography (DSA) image analysis based on densitometry is widely accepted and used. For the densitometoric DSA image analysis, it is required that there is a linear relationships between the pixel values on DSA images (DSA values) and contrast medium iodine concentration or the thickness of the vessels or the chambers filled with contrast material. We studied on relationship between the DSA value and iodine concentration especially in high iodine concentration. As for the relationship between DSA values and iodine concentration on the DSA images at low concentration, DSA phantom had a good linear relationship. However, the relationship at the high iodine concentration, DSA phantom sometimes lost this linear relationship. Our results suggested that it was necessary to identify relationship between DSA values and iodine concentration in each DSA system, especially in high iodine concentration setting, for densitometoric DSA image analysis.


Assuntos
Angiografia Digital/métodos , Meios de Contraste , Iodo , Imagens de Fantasmas , Angiografia , Animais , Densitometria , Humanos , Processamento de Imagem Assistida por Computador
11.
Kyobu Geka ; 52(3): 243-6, 1999 Mar.
Artigo em Japonês | MEDLINE | ID: mdl-10097554

RESUMO

A 13-year-old girl was admitted with a sudden onset of chest oppression. Mediastinal teratoma was suspected on chest X-ray and CT scan. A grade 2/6 systolic murmur was heard at the upper left sternal area and cardiac catheterization showed mild pulmonary stenosis. After resection of the tumor, the murmur disappeared and histopathological diagnosis was mature teratoma. This is a rare case report of pulmonary stenosis caused by mediastinal mature teratoma.


Assuntos
Neoplasias do Mediastino/complicações , Teratoma/complicações , Adolescente , Feminino , Humanos , Estenose da Valva Pulmonar/etiologia
12.
Jpn J Thorac Cardiovasc Surg ; 46(7): 643-6, 1998 Jul.
Artigo em Japonês | MEDLINE | ID: mdl-9750449

RESUMO

We performed the coil embolization for 64-year-old male with patent ductus arteriosus and left ventricular dysfunction. We used "snare method" and "cross catheter technique" delivering one coil transvenously and one coil transarterially. Echocardiograms at 7 month after the procedure demonstrated complete occlusion of the ductus, though small shunt was detected at discharge.


Assuntos
Cateterismo Periférico/métodos , Permeabilidade do Canal Arterial/terapia , Embolização Terapêutica/métodos , Disfunção Ventricular Esquerda/complicações , Permeabilidade do Canal Arterial/complicações , Permeabilidade do Canal Arterial/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Ultrassonografia
13.
Nihon Igaku Hoshasen Gakkai Zasshi ; 57(9): 602-4, 1997 Aug.
Artigo em Japonês | MEDLINE | ID: mdl-9293759

RESUMO

We have developed a cine display of postprocessed 3D MR images of the thoracic aorta. Maximum intensity projection (MIP) images of the thoracic aorta in each phase were reconstructed from consecutive 2D-cine MR data sets, and displayed in a cine loop. The postprocessed 3D MR images clearly showed the relationship between major cervical branches and aortic pathologies such as aneurysms, and cine display presented the flow pattern in the aorta. 3D-cine MR angiography seems to be useful for follow-up studies of thoracic aortic diseases especially in patients with renal dysfunction.


Assuntos
Aneurisma da Aorta Torácica/diagnóstico , Dissecção Aórtica/diagnóstico , Imagem Cinética por Ressonância Magnética/métodos , Adulto , Idoso , Humanos , Pessoa de Meia-Idade
14.
Ann Thorac Surg ; 63(1): 244-6, 1997 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8993282

RESUMO

Aortic replacement was performed in a patient with acute type A aortic dissection originating from the descending thoracic aorta. Postoperatively, a persistent false lumen resulted in severe stenosis of the right renal artery. Percutaneous stent angioplasty improved renovascular hypertension and renal function. This procedure is useful for management of patients with branch complications of aortic dissection.


Assuntos
Angioplastia com Balão , Aneurisma da Aorta Torácica/complicações , Dissecção Aórtica/complicações , Hipertensão Renovascular/etiologia , Obstrução da Artéria Renal/etiologia , Obstrução da Artéria Renal/terapia , Stents , Dissecção Aórtica/cirurgia , Aneurisma da Aorta Torácica/cirurgia , Feminino , Humanos , Hipertensão Renovascular/terapia , Pessoa de Meia-Idade , Radiografia , Obstrução da Artéria Renal/diagnóstico por imagem
15.
Nihon Igaku Hoshasen Gakkai Zasshi ; 56(13): 948-54, 1996 Nov.
Artigo em Japonês | MEDLINE | ID: mdl-8969058

RESUMO

MR images of the brain were retrospectively reviewed in 13 patients with carbon monoxide (CO) poisoning to examine the relation between the MR findings and clinical course. The patients included 11 men and 2 women whose ages ranged from 6 to 88 years (mean, 38 years). Repeated MR studies of at most five times were performed on 9 patients. Lesions in the bilateral globus pallidi were found in 5 cases showing hyperintensity on T2-weighted images (T2WI) and iso-to hypointensity on T1-weighted images (T1WI). The patients with only pallidi lesions clinically recovered well. Hyperintense white matter lesions were recognized on T2WI in 8 patients, including all 5 with delayed encephalopathy. Sequential studies generally showed a tendency of regression of these hyperintense lesions with improvement of symptoms, indicative of reversible demyelination as documented in the pathological literature. One patient with poor prognosis revealed white matter lesions, that were hyperintense on T2WI and very hypointense on T1WI, which may represent irreversible change. Thus, clinical course seems to be closely related with white matter lesions, but not with pallidi lesions. In cases of CO intoxication, therefore, MR study provides valuable information on patients' clinical prognoses.


Assuntos
Encéfalo/patologia , Intoxicação por Monóxido de Carbono/diagnóstico , Imageamento por Ressonância Magnética , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
17.
J Am Coll Cardiol ; 27(1): 30-7, 1996 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8522707

RESUMO

OBJECTIVES: This study sought to investigate the effect of coronary angioplasty on chronic hypoperfusion-induced endothelial dysfunction in patients with coronary heart disease. BACKGROUND: The endothelium is an important component for organ flow regulation. Ischemia with or without reperfusion is known to cause endothelial dysfunction. We tested the hypothesis that chronic hypoperfusion impairs endothelial function in the angiographically normal coronary artery segment distal to stenosis and that the impairment by chronic hypoperfusion is reduced by coronary angioplasty. METHODS: In 13 patients with stable angina pectoris, substance P (10, 30 and 100 pmol) and nitroglycerin (200 micrograms) were sequentially infused into the coronary artery in a cumulative manner on the day after coronary angioplasty. In 10 of these patients, vascular responses to these agents were again investigated 3 months after angioplasty. Changes in vascular diameter were evaluated in vessels located proximal and distal to the target lesion, both of which were angiographically normal, by performing computer-assisted quantitative coronary angiography. In five patients, the transstenotic pressure gradient was also measured with a pressure sensor-mounted guide wire before angioplasty. RESULTS: On the day after angioplasty, the magnitude of dilation by substance P in distal segments was significantly less than that in proximal segments and inversely correlated with the transstenotic pressure gradient (p < 0.05) and lesion stenosis (p < 0.05). There was no difference in nitroglycerin-induced vasodilation between the two vessel segment groups. Three months later, the impaired response to substance P in the distal segment was restored to normal. CONCLUSIONS: We conclude that chronic hypoperfusion impairs endothelium-dependent dilation of coronary artery distal to critical stenosis in patients with ischemic heart disease and that coronary angioplasty ameliorates the endothelial dysfunction within 3 months.


Assuntos
Angina Pectoris/fisiopatologia , Angina Pectoris/terapia , Angioplastia Coronária com Balão , Endotélio Vascular/fisiopatologia , Idoso , Angina Pectoris/diagnóstico por imagem , Angiografia Coronária , Vasos Coronários/efeitos dos fármacos , Relação Dose-Resposta a Droga , Seguimentos , Humanos , Injeções Intra-Arteriais , Masculino , Pessoa de Meia-Idade , Nitroglicerina/administração & dosagem , Variações Dependentes do Observador , Estudos Prospectivos , Análise de Regressão , Fatores de Risco , Volume Sistólico/fisiologia , Substância P/administração & dosagem , Vasodilatadores/administração & dosagem
18.
Tohoku J Exp Med ; 175(4): 219-23, 1995 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-7570580

RESUMO

A simple maneuver in intraarterial digital subtraction angiography (DSA) is proposed to improve the images of left internal thoracic artery bypass grafts (LITAGs). A contrast flush in the left subclavian artery, using a catheter that had been percutaneously introduced from the left brachial artery, was carried out in 14 patients with multiple coronary-aorta bypass grafts (CABGs) after aortic DSA. The side-hole portion of the catheter tip was positioned in the proximal left subclavian artery as the coiled portion remained in the aortic arch. Nonionic contrast medium (350 mg/ml of iodine) was injected with an automatic injector in a volume of 6-8 ml and at a flow rate of 3-4 ml/sec. Left subclavian arterial flush DSA delineated the LITAGs excellently in 11, well in 3, and fairly or poorly in none of the 14 cases. There were no complications in any of these cases. A supplemental contrast flush of the left subclavian artery with a pigtail catheter following aortic DSA improves the diagnosis of multiple CABG patency.


Assuntos
Angiografia Digital/estatística & dados numéricos , Ponte de Artéria Coronária , Seguimentos , Idoso , Cateterismo , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Masculino , Pessoa de Meia-Idade
19.
Nihon Igaku Hoshasen Gakkai Zasshi ; 54(8): 751-60, 1994 Jul 25.
Artigo em Japonês | MEDLINE | ID: mdl-8072865

RESUMO

CT and MR imaging findings of 57 sphenoidal masses were retrospectively reviewed to assess the possibility of differential diagnosis between them. Various kinds of masses such as pituitary adenoma, epipharyngeal cancer, mucocele, chordoma, chondroma, chondrosarcoma, distant metastasis, multiple myeloma, fibrous dysplasia, craniopharyngioma, hemangiopericytoma, giant cell tumor, primary sphenoidal cancer, malignant melanoma, leukemia, histiocytosis X, and giant cell tumor were included in this series. CT scanning was performed in all cases, while MR images were obtained in 48 cases using a spin-echo pulse sequence. The relative density of the masses, bony changes and calcification were evaluated on CT, and on MR images, signal intensity of the masses relative to the normal gray matter, contrast enhancement and extension/contour were evaluated. Although no single feature appeared to be specific to the masses, detection of calcification on CT, identification of the normal pituitary gland as deformed or displaced on T1-weighted images, signal intensity on T2-weighted images, and extension of the masses seemed to be useful and should be examined in terms of their ability to assist in differential diagnosis. Finally, accommodative classification of sphenoidal masses primarily based on presumed origin or mode of extension was attempted.


Assuntos
Neoplasias dos Seios Paranasais/diagnóstico , Seio Esfenoidal , Adolescente , Adulto , Idoso , Criança , Pré-Escolar , Diagnóstico Diferencial , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Neoplasias dos Seios Paranasais/diagnóstico por imagem , Neoplasias Hipofisárias/diagnóstico , Estudos Retrospectivos , Seio Esfenoidal/patologia , Tomografia Computadorizada por Raios X
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