Inferior vena caval filter thrombi: evaluation with intravascular US.

abstract：:To study the signs of coal worker's pneumoconiosis (CWP) at computed tomography (CT), the authors obtained thoracic CT scans in 170 coal-dust-exposed workers who were concomitantly evaluated with conventional posteroanterior and lateral radiography. The profusion and extent of disease was assessed by means of CT in tw...

journal_title：Radiology

authors： Remy-Jardin M,Degreef JM,Beuscart R,Voisin C,Remy J

更新日期：1990-11-01 00:00:00

abstract：:Digital radiographs obtained with a CT scanner were evaluated as an alternative to conventional pelvimetry. Dosimetry studies demonstrated an absorbed radiation dose of 22 mrad for each digital radiograph, approximately 3% of the dose for comparable standard radiographs. Distance measurements were accurately made on d...

journal_title：Radiology

authors： Federle MP,Cohen HA,Rosenwein MF,Brant-Zawadzki MN,Cann CE

更新日期：1982-06-01 00:00:00

abstract：:Gadolinium chelates, intended as intravenous contrast media for magnetic resonance imaging, have been regarded as nonnephrotoxic and recommended to replace iodinated contrast media in patients with azotemia who are undergoing digital subtraction angiography (DSA). High intraarterial doses (up to 220 mmol of gadodiamid...

journal_title：Radiology

authors： Nyman U,Elmståhl B,Leander P,Nilsson M,Golman K,Almén T

更新日期：2002-05-01 00:00:00

abstract：:Percutaneous transluminal renal angioplasty has been shown to be an effective technique to dilate renal artery lesions, particularly those due to fibromuscular dysplasia. However, four of 70 patients in this study experienced atypical responses to angioplasty. Their lesions initially resisted dilation and had incomple...

journal_title：Radiology

authors： Srur MF,Sos TA,Saddekni S,Cohn DJ,Rozenblit G,Wetter EB

更新日期：1985-12-01 00:00:00

abstract：:Background Radiomics extracts features from medical images more precisely and more accurately than visual assessment. However, radiomics features are affected by CT scanner parameters such as reconstruction kernel or section thickness, thus obscuring underlying biologically important texture features. Purpose To inves...

journal_title：Radiology

authors： Orlhac F,Frouin F,Nioche C,Ayache N,Buvat I

更新日期：2019-04-01 00:00:00

abstract：:Irradiation of the orbit is often associated with substantial dose inhomogeneity resulting from the insertion of lens blocks. We postulated that such dose inhomogeneity, which often exceeds 40%, could be halved by the use of two pairs of wedged beams, one angled in the sagittal plane and the other in the commonly empl...

journal_title：Radiology

authors： Harisiadis L,Schell MC,Working KR,Justice T,Wessels BW,Ling CC

更新日期：1985-09-01 00:00:00

abstract：:In 11 volunteers, magnetic resonance (MR) imaging of the cervical spine was performed with a magnetization transfer preparatory pulse (prepulsed), three-dimensional Fourier transform, turbo field echo sequence. The effects of flip angle, number of shots, phase-encoding profile order, and magnetization transfer prepuls...

journal_title：Radiology

authors： Melhem ER,Caruthers SD,Jara H

更新日期：1998-06-01 00:00:00

abstract：PURPOSE:To evaluate aortoiliac aneurysms repaired with endovascular stent-grafts complicated by hemodynamically significant graft stenosis. MATERIALS AND METHODS:Fifty-four patients (52 men, two women; age range, 41-90 years; mean age, 75 years) with aneurysms of the infrarenal aorta (n = 36) or iliac artery (n = 18) ...

journal_title：Radiology

authors： Silberzweig JE,Marin ML,Hollier LH,Mitty HA,Parsons RE,Cooper JM,Ahn J

更新日期：1998-10-01 00:00:00

abstract：:Purpose To determine if a reduced-dose computed tomography (CT) protocol could effectively help to identify patients in the emergency department (ED) with moderate to high likelihood of calculi who would require urologic intervention within 90 days. Materials and Methods The study was approved by the institutional rev...

journal_title：Radiology

authors： Moore CL,Daniels B,Singh D,Luty S,Gunabushanam G,Ghita M,Molinaro A,Gross CP

更新日期：2016-09-01 00:00:00

abstract：PURPOSE:To evaluate the utility of helical computed tomographic (CT) angiography for depiction of thrombi in the portal venous system in patients under consideration for transjugular intrahepatic portosystemic shunt (TIPS) creation. MATERIALS AND METHODS:Contrast material-enhanced helical CT was performed before TIPS ...

journal_title：Radiology

authors： Kuszyk BS,Osterman FA Jr,Venbrux AC,Heath DG,Urban BA,Smith PA,Fishman EK

更新日期：1998-01-01 00:00:00

abstract：:Purpose To identify risk factors for hippocampal calcifications and to investigate the association between hippocampal calcifications and cognitive function. Materials and Methods For this retrospective study, consecutive patients visiting a memory clinic at a Dutch general hospital between April 2009 and April 2015 w...

journal_title：Radiology

authors： de Brouwer EJM,Kockelkoren R,Claus JJ,de Jonghe A,Geerlings MI,Jongsma TEF,Mali WPTM,Hendrikse J,de Jong PA,Koek HL

更新日期：2018-09-01 00:00:00

abstract：PURPOSE:To examine whether the different appearances of intramedullary high signal intensity (SI) on T2-weighted MR images in cervical spondylotic myelopathy are related to differences in surgical prognosis. MATERIALS AND METHODS:The magnetic resonance (MR) findings and Japanese Orthopedic Association (JOA) score of 6...

journal_title：Radiology

authors： Chen CJ,Lyu RK,Lee ST,Wong YC,Wang LJ

更新日期：2001-12-01 00:00:00

abstract：PURPOSE:To determine the diagnostic accuracy of breath-hold, contrast material-enhanced, three-dimensional (3D) magnetic resonance (MR) angiography in the assessment of the aortoiliac inflow tract and renal arteries with conventional catheter angiography as the standard of reference. MATERIALS AND METHODS:In 39 patien...

journal_title：Radiology

authors： Hany TF,Debatin JF,Leung DA,Pfammatter T

更新日期：1997-08-01 00:00:00

abstract：PURPOSE:To examine geographic variation in providers' use of diagnostic imaging to identify potential targets for quality improvement initiatives after adjusting for imaging referral across hospital referral regions (HRRs). MATERIALS AND METHODS:Using two Centers for Medicare and Medicaid Services datasets, the author...

journal_title：Radiology

authors： Ip IK,Raja AS,Seltzer SE,Gawande AA,Joynt KE,Khorasani R

更新日期：2015-06-01 00:00:00

abstract：:In order to demonstrate the potential advantages of proton imaging for medical use, a 205-MeV proton beam was developed using the Argonne National Laboratory Booster I synchrotron. Data were taken using a narrow scanning beam and an electronic detector system. The dose reduction and an improved mass resulution over th...

journal_title：Radiology

authors： Kramer SL,Moffett DR,Martin RL,Colton EP,Steward VW

更新日期：1980-05-01 00:00:00

abstract：:Various whole-body, multiple-field, electron-beam therapy techniques are analyzed. Accelerator characteristics, various dosimetric techniques, and experimental setup are described. A flattening filter was constructed which produced an uncollimated electron-beam profile (4 MeV) with a uniformity of +/- 8% across a 200-...

journal_title：Radiology

authors： Tetenes PJ,Goodwin PN

更新日期：1977-01-01 00:00:00

abstract：:When a 30-minute infusion is chosen for intravenous cholangiography, the optimal dose in subjects with normal and decreased hepatic function seems to be 0.6 ml/kg iodipamide. Delayed visualization of the ducts and gallbladder occurs in hepatic dysfunction, therefore, radiographs should be taken up to eight hours after...

journal_title：Radiology

authors： Burgener FA,Fischer HW

更新日期：1975-03-01 00:00:00

abstract：:Aneurysms of the thoracic aorta simulated primary esophageal disease both clinically and radiographically in 5 patients. Four had an aortoesophageal fistula at the time of presentation; endoscopic biopsy of a presumed esophageal tumor precipitated hematemesis in the fifth patient. In retrospect, the fistulas were demo...

journal_title：Radiology

authors： Baron RL,Koehler RE,Gutierrez FR,Forrest JV,Weyman PJ

更新日期：1981-12-01 00:00:00

abstract：PURPOSE:To evaluate a technique to perform fluoroscopically directed thoracic transforaminal epidural injections. MATERIALS AND METHODS:Institutional review board approval and a waiver of consent were obtained for this retrospective HIPAA-compliant study. Findings from 198 consecutively performed foraminal nerve block...

journal_title：Radiology

authors： Rosas HG,Gilula LA

更新日期：2010-02-01 00:00:00

abstract：:Twenty-one bone marrow transplantation (BMT) patients were studied prospectively to determine the prevalence of sonographic hepatobiliary abnormalities and to determine if these abnormalities were associated with hepatic venocclusive disease (VOD). Baseline US was performed in all patients prior to chemoradiation ther...

journal_title：Radiology

authors： Hommeyer SC,Teefey SA,Jacobson AF,Higano CS,Bianco JA,Colacurcio CJ,McDonald GB

更新日期：1992-09-01 00:00:00

abstract：PURPOSE:To use Prospective Investigation of Pulmonary Embolism Diagnosis (PIOPED) II data to retrospectively determine sensitivity and specificity of ventilation-perfusion (V/Q) scintigraphic studies categorized as pulmonary embolism (PE) present or PE absent and the proportion of patients for whom these categories app...

journal_title：Radiology

authors： Sostman HD,Stein PD,Gottschalk A,Matta F,Hull R,Goodman L

更新日期：2008-03-01 00:00:00

abstract：:The ultrasonic appearance of the normal and abnormal fetal spine before 20 weeks' gestation was reviewed in 121 pregnances. A model was constructed to establish the mechanism of production in the various configurations seen. The relative roles of ultrasonography, alpha fetoprotein assay, and fetoscopy in the diagnosis...

journal_title：Radiology

authors： Miskin M,Baim RS,Allen LC,Benzie RJ

更新日期：1979-07-01 00:00:00

abstract：:Magnetic resonance (MR) images of the hips and knees of three healthy volunteers were reviewed and compared with images obtained from the hips of three patients with effusions. Comparison was also made with MR images obtained from two swine knees following the injections of saline in one and blood in the other. The an...

journal_title：Radiology

authors： Beltran J,Noto AM,Herman LJ,Mosure JC,Burk JM,Christoforidis AJ

更新日期：1986-01-01 00:00:00

abstract：:The results of 179 radionuclide bone imaging examinations, 105 gathered retrospectively from the cases of 97 patients referred for assessment of possible occult fracture of the proximal femur (hip) and 74 performed prospectively on 63 patients referred with a diagnosis of obvious or suspected hip fracture, were analyz...

journal_title：Radiology

authors： Holder LE,Schwarz C,Wernicke PG,Michael RH

更新日期：1990-02-01 00:00:00

abstract：:Four nodules, visualized with 99mTc pertechnetate at 20-60 min., were not visualized with either 123I or 131I at 2-4 hours. Each nodule was demonstrated to have autonomy of function in excess of surrounding normal tissue when imaged with radioiodine after TSH suppression. Rapid turnover of an iodine moiety would seem ...

journal_title：Radiology

authors： Miller JM,Kasenter AG,Marks DS

更新日期：1976-06-01 00:00:00

abstract：:Gray scale ultrasonic visualization of the breast is a simple and safe technique for the detection of liquid-filled masses. Cysts and enlarged ducts as small as 2 mm in diameter can be reliably detected with a greater accuracy than is possible with any other imaging technique. The ultrasonic examination provides consi...

journal_title：Radiology

authors： Jellins J,Kossoff G,Reeve TS

更新日期：1977-10-01 00:00:00

abstract：:Thirty-six proven cases of medulloblastoma were reviewed by serial CT follow-up examinations from 4 months to 10 years, 2 months after the initial diagnosis, with a mean follow-up time of 3 years, 9 months. The children ranged in age from 10 months to 16 years, 7 months at the time of follow-up. The tumor recurred at ...

journal_title：Radiology

authors： Lee YY,Glass JP,van Eys J,Wallace S

更新日期：1985-03-01 00:00:00

abstract：:Multicenter, collaborative studies offer an effective way to meet the growing need for timely and generalizable clinical evaluations of imaging technologies. This article discusses issues of study design, statistical analysis, organization, and day-to-day group operation for collaborative prospective clinical evaluati...

journal_title：Radiology

authors： Gatsonis C,McNeil BJ

更新日期：1990-05-01 00:00:00

abstract：PURPOSE:To evaluate how interreader agreement and the site of the volume of interest (VOI) affect the agreement and variability of liver mean standardized uptake value normalized to lean body mass (SUL(mean)) at fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT). MATERIALS...

journal_title：Radiology

authors： Viner M,Mercier G,Hao F,Malladi A,Subramaniam RM

更新日期：2013-05-01 00:00:00

abstract：:Six cases of acoustic neurinoma are presented in which the tumor is supplied by branches of the external carotid artery, with or without supply from the internal carotid artery. A new angiographic protocol for the investigation of masses in the cerebellopontine angle is suggested. According to early results of the CT ...

journal_title：Radiology

authors： Théron J,Lasjaunias P

更新日期：1976-01-01 00:00:00