Ureteropelvic junction obstruction: treatment with percutaneous endopyelotomy.

abstract：PURPOSE:To investigate whether the presence or absence of gas in the appendix may be considered as additional ultrasonographic (US) criteria to rule out or confirm acute appendicitis. MATERIALS AND METHODS:The appendices in 239 control subjects, 138 patients with lower right quadrant pain without acute appendicitis, a...

journal_title：Radiology

authors： Rettenbacher T,Hollerweger A,Macheiner P,Rettenbacher L,Frass R,Schneider B,Gritzmann N

更新日期：2000-01-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate interobserver variability between breast radiologists by using terminology of the fourth edition of the Breast Imaging Reporting and Data System (BI-RADS) to categorize lesions on mammograms and sonograms and to retrospectively determine the positive predictive value (PPV) of BI-RADS...

journal_title：Radiology

authors： Lazarus E,Mainiero MB,Schepps B,Koelliker SL,Livingston LS

更新日期：2006-05-01 00:00:00

abstract：:The records of 22 patients in whom wall thickening of the renal collecting system was seen at ultrasound (US) were retrospectively reviewed. Wall thickening was found in 15 patients with renal transplants and seven with native kidneys. Severe thickening occurred with transplant rejection, but thickening also occurred ...

journal_title：Radiology

authors： Nicolet V,Carignan L,Dubuc G,Hébert G,Bourdon F,Paquin F

更新日期：1988-08-01 00:00:00

abstract：PURPOSE:To prospectively investigate the effect of low tube voltage on radiation dose, contrast enhancement, image quality, and image noise at abdominal dynamic computed tomography (CT). MATERIALS AND METHODS:The institutional review board approved this study. Prior informed consent was obtained from all patients. For...

journal_title：Radiology

authors： Nakayama Y,Awai K,Funama Y,Hatemura M,Imuta M,Nakaura T,Ryu D,Morishita S,Sultana S,Sato N,Yamashita Y

更新日期：2005-12-01 00:00:00

abstract：:Thirty-seven patients with 18 primary advanced or persistent, 16 local recurrent, and three local metastatic tumors of the head and neck were treated with a combination of interstitial low-dose iridium-192 radiation therapy and interstitial 915-MHz microwave hyperthermia supplemented by external radiation therapy. Twe...

journal_title：Radiology

authors： Seegenschmiedt MH,Sauer R,Fietkau R,Karlsson UL,Brady LW

更新日期：1990-07-01 00:00:00

abstract：PURPOSE:To investigate how changes in kilovolt peak and milliampere second settings, and patient weight affect transmitted x-ray energy fluence and the image contrast-to-noise ratio (CNR) at abdominal computed tomography (CT). MATERIALS AND METHODS:Cylinders of water were used as patient models, and x-ray spectra, inc...

journal_title：Radiology

authors： Huda W,Scalzetti EM,Levin G

更新日期：2000-11-01 00:00:00

abstract：PURPOSE:To determine the ultrasonographic (US) findings of normal and acutely torn posterior cruciate ligament (PCL) of the knee and evaluate the usefulness of US in the injured PCL. MATERIALS AND METHODS:US images were obtained in 30 knees in 15 asymptomatic volunteers as a control group and in 35 patients clinically...

journal_title：Radiology

authors： Cho KH,Lee DC,Chhem RK,Kim SD,Bouffard JA,Cardinal E,Park BH

更新日期：2001-05-01 00:00:00

abstract：:Abnormal collateral vessels develop frequently in patients with right ventricular outflow or pulmonary artery obstruction. Surgery is usually used to obliterate these vessels but may be difficult, involve prolonged operative time, or require a different thoracotomy than that used for correction or palliation of the ca...

journal_title：Radiology

authors： Lois JF,Gomes AS,Smith DC,Laks H

更新日期：1988-12-01 00:00:00

abstract：:Background The hardware and software differences between MR vendors and individual sites influence the quantification of MR spectroscopy data. An analysis of a large data set may help to better understand sources of the total variance in quantified metabolite levels. Purpose To compare multisite quantitative brain MR ...

journal_title：Radiology

authors： Považan M,Mikkelsen M,Berrington A,Bhattacharyya PK,Brix MK,Buur PF,Cecil KM,Chan KL,Chen DYT,Craven AR,Cuypers K,Dacko M,Duncan NW,Dydak U,Edmondson DA,Ende G,Ersland L,Forbes MA,Gao F,Greenhouse I,Harris AD,He

更新日期：2020-04-01 00:00:00

abstract：UNLABELLED:The performance of a diagnostic test is often expressed in terms of sensitivity and specificity compared with the reference standard. Calculations of sensitivity and specificity commonly involve multiple observations per patient, which implies that the data are clustered. Whether analysis of sensitivity and ...

journal_title：Radiology

authors： Genders TS,Spronk S,Stijnen T,Steyerberg EW,Lesaffre E,Hunink MG

更新日期：2012-12-01 00:00:00

abstract：:Pedal lymphography was performed without the use of vital dyes in 510 patients. Lymphatic vessels were still readily identifiable by this method, due to their transparency, clarity, elasticity, distensibility, and characteristic branching pattern. Procedure time was shortened by 10-15 minutes without compromising the ...

journal_title：Radiology

authors： Kapdi CC

更新日期：1979-12-01 00:00:00

abstract：:During a 17-year period, 33 injuries produced radiographic abnormalities in 26 members of a professional football team. Sites of injury were correlated with playing position and protective equipment worn at the time of injury. Fractures of multiple transverse processes of the lumbar spine are reported in offensive hal...

journal_title：Radiology

authors： Bowerman JW,McDonnell EJ

更新日期：1975-10-01 00:00:00

abstract：:The onset of impotence was related to penile trauma in ten of 90 patients who underwent angiography. Angiographic results facilitated diagnosis in all patients. Trauma was secondary to a variety of injuries including fractures, soft-tissue perineal injuries without fractures, and repeated perineal pounding during long...

journal_title：Radiology

authors： Lurie AL,Bookstein JJ,Kessler WO

更新日期：1988-01-01 00:00:00

abstract：:Two patients with a total of 4 intracerebral hemorrhages were examined by serial computer tomography (CT) over a period of up to 6 months, revealing a progressive decrease in lesion volume and density which eventually became less than that of the surrounding brain tissue. These changes were interpreted as complete clo...

journal_title：Radiology

authors： Messina AV,Chernik NL

更新日期：1976-03-01 00:00:00

abstract：PURPOSE:To investigate contralateral breast biopsy histologic findings in women with breast cancer. MATERIALS AND METHODS:Histologic findings in 237 patients with breast cancer who underwent contralateral breast biopsy for clinically or mammographically detected abnormalities were retrospectively reviewed. Malignant f...

journal_title：Radiology

authors： Roubidoux MA,Helvie MA,Wilson TE,Lai NE,Paramagul C

更新日期：1997-06-01 00:00:00

abstract：:The institutional review board approved the described HIPAA-compliant study, which was performed to prospectively evaluate observer performance in the detection of artificial multiple sclerosis (MS) lesions that were randomly distributed supra- and infratentorially on simulated fluid-attenuated inversion-recovery (FLA...

journal_title：Radiology

authors： Pikus L,Woo JH,Wolf RL,Herskovits EH,Moonis G,Jawad AF,Krejza J,Melhem ER

更新日期：2006-04-01 00:00:00

abstract：:To investigate spatial resolution requirements for digitized portal images in radiation therapy, observer performance tests were performed. One hundred twenty portal images were digitized with sampling frequencies of 0.700, 0.350, and 0.175 mm for observation. Receiver operating characteristic analysis was used to det...

journal_title：Radiology

authors： Okajima K,Nagata Y,Mitsumori M,Ishigaki T,Kimura I,Nakano Y,Minato K,Komori M,Sato K,Takahashi T

更新日期：1992-05-01 00:00:00

abstract：:Nephrocalcinosis was diagnosed by means of gray-scale somography in a premature infant with severe bronchopulmonary dysplasia. The examination provided a way of localizing faint calcifications seen on a plain abdominal radiograph. ...

journal_title：Radiology

authors： Cacciarelli AA,Young N,Levine AJ

更新日期：1978-08-01 00:00:00

abstract：:The safety of small-caliber firearms in a 1.5-T magnetic resonance (MR) imaging environment was assessed with six handguns, which were unloaded before testing. Each firearm was withdrawn barrel-first to assess the interaction of the magnetic field with the hammer and/or trigger. Two of the six weapons discharged repro...

journal_title：Radiology

authors： Kanal E,Shaibani A

更新日期：1994-12-01 00:00:00

abstract：PURPOSE:To retrospectively assess the apparent diffusion coefficient (ADC) for prediction of malignancy and prognosis of malignant astrocytic tumors. MATERIALS AND METHODS:The institutional review board approved this study and did not require patient informed consent. Findings from 37 consecutive patients (21 men, 16 ...

journal_title：Radiology

authors： Higano S,Yun X,Kumabe T,Watanabe M,Mugikura S,Umetsu A,Sato A,Yamada T,Takahashi S

更新日期：2006-12-01 00:00:00

abstract：PURPOSE:To prospectively evaluate fluorine 18 ((18)F) 2-fluoropropionyl-labeled PEGylated dimeric arginine-glycine-aspartic acid (RGD) peptide (PEG3-E[c{RGDyk}]2) (FPPRGD2) positron emission tomography (PET) in patients with glioblastoma multiforme (GBM). MATERIALS AND METHODS:The institutional review board approved t...

journal_title：Radiology

authors： Iagaru A,Mosci C,Mittra E,Zaharchuk G,Fischbein N,Harsh G,Li G,Nagpal S,Recht L,Gambhir SS

更新日期：2015-11-01 00:00:00

abstract：PURPOSE:To evaluate magnetic resonance (MR) imaging-guided laser-induced thermotherapy (LITT) of liver metastases. MATERIALS AND METHODS:In a phase II study, 20 patients with 33 metastases from colorectal carcinoma (75%) or other primary tumors (25%) underwent LITT. MR thermometry performed with fast low-angle shot se...

journal_title：Radiology

authors： Vogl TJ,Müller PK,Hammerstingl R,Weinhold N,Mack MG,Philipp C,Deimling M,Beuthan J,Pegios W,Riess H

更新日期：1995-07-01 00:00:00

abstract：PURPOSE:To test a neural network in differentiation of benign from malignant solitary pulmonary nodules. MATERIALS AND METHODS:Neural networks were trained and tested on the characteristics of 318 nodules. Predictive accuracy of the network was judged for calibration and discrimination. Network results were compared w...

journal_title：Radiology

authors： Gurney JW,Swensen SJ

更新日期：1995-09-01 00:00:00

abstract：:The Radiation Oncology Center in Sacramento, California, has developed a procedure for establishing an intraoperative radiation therapy facility in a community practice. The logistics pertaining to personnel, equipment, physical measurements, and quality assurance are presented. Particular emphasis is given to the mos...

journal_title：Radiology

authors： Wolkov HB,Chenery SG,Asche DR,McPeek EC,Hanks GE,Holmes TW

更新日期：1988-07-01 00:00:00

abstract：:Though the advent of computed tomography has improved the detection of posterior fossa lesions, there are times when it can not be used to differentiate between an intra- and extraaxial lesion, particularly when the mass is anteriorly located. Base view angiography can be used to make this distinction, accurately loca...

journal_title：Radiology

authors： Pinto RS,George AE,Kricheff II,Naidich TP,Fox A

更新日期：1977-07-01 00:00:00

abstract：:Xeroradiography is an excellent technique in evaluating the fit of extremity prostheses. Because of its inherent characteristics, xeroradiography can clearly demonstrate the stump-socket relationship. Consequently, the degree of contact achieved and attendant pressure problems, if any, can be precisely determined. ...

journal_title：Radiology

authors： Jing BS,Villanueva R,Dodd GD

更新日期：1977-02-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate high-spatial-resolution signal enhancement ratio (SER) imaging for the prediction of disease recurrence in patients with breast cancer who underwent preoperative magnetic resonance (MR) imaging. MATERIALS AND METHODS:This retrospective study was approved by the institutional review ...

journal_title：Radiology

authors： Li KL,Partridge SC,Joe BN,Gibbs JE,Lu Y,Esserman LJ,Hylton NM

更新日期：2008-07-01 00:00:00

abstract：:The potential of a new nonionic gadolinium complex--gadodiamide injection--to (a) allow distinction between reperfused and occlusive infarction and (b) enable differentiation between reperfused reversible and irreversible myocardial injury was investigated. Three groups of rats were used: 10 with reversibly reperfused...

journal_title：Radiology

authors： Saeed M,Wendland MF,Takehara Y,Masui T,Higgins CB

更新日期：1992-03-01 00:00:00

abstract：PURPOSE:To determine whether measurements of skewness, kurtosis, and mean lung attenuation on thin-section computed tomographic (CT) histograms in patients with idiopathic pulmonary fibrosis (IPF) correlate with pulmonary physiologic abnormality in a nonspirometrically controlled multicenter study. MATERIALS AND METHO...

journal_title：Radiology

authors： Best AC,Lynch AM,Bozic CM,Miller D,Grunwald GK,Lynch DA

更新日期：2003-08-01 00:00:00

abstract：PURPOSE:To use videomicroscopy of tumor-bearing livers of live mice to depict tumors directly to determine the exact nature of rims seen on corresponding ultrasonographic (US) scans. MATERIALS AND METHODS:Seventy-six hepatic colorectal cancer metastases were studied in exteriorized livers of 18 mice by using intravita...

journal_title：Radiology

authors： Kruskal JB,Thomas P,Nasser I,Cay O,Kane RA

更新日期：2000-06-01 00:00:00