Recurrent gastrointestinal bleeding: use of thrombolysis with anticoagulation in diagnosis.

abstract：:Pilomatrixomas (calcifying epitheliomas of Malherbe) are benign soft-tissue tumors that occur in the dermis or subcutaneous tissues; about 40% are found in children under 10 years of age. More than 80% have microscopic calcification and/or ossification. Although the incidence of radiographically visible calcification ...

journal_title：Radiology

authors： Haller JO,Kassner G,Ostrowitz A,Kottmeler K,Perfschuk LP

更新日期：1977-04-01 00:00:00

abstract：PURPOSE:To prospectively assess the accuracy of unenhanced magnetic resonance (MR) imaging in the detection and localization of labral injuries. MATERIALS AND METHODS:One hundred three patients with clinically suspected shoulder injuries were prospectively examined with unenhanced MR imaging. A combination of gradient...

journal_title：Radiology

authors： Gusmer PB,Potter HG,Schatz JA,Wickiewicz TL,Altchek DW,O'Brien SJ,Warren RF

更新日期：1996-08-01 00:00:00

abstract：:Positron emission tomography (PET) with fluorine-18 fluoro-2-deoxy-D-glucose (FDG) was performed in 19 patients referred for clinical evaluation of soft-tissue masses. These patients had 20 different lesions and had been evaluated previously with computed tomography (CT) and/or magnetic resonance (MR) imaging. The dia...

journal_title：Radiology

authors： Griffeth LK,Dehdashti F,McGuire AH,McGuire DJ,Perry DJ,Moerlein SM,Siegel BA

更新日期：1992-01-01 00:00:00

abstract：:Purpose To retrospectively evaluate whether thermal injury-induced hepatic parenchymal hypoperfusion can be a significant risk factor for tumor recurrence after radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC). Materials and Methods The institutional review board approved this retrospective study, and t...

journal_title：Radiology

authors： Lee DH,Lee JM,Yoon JH,Kim YJ,Han JK

更新日期：2017-03-01 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：:Digital subtraction angiography (DSA) using a 41-cm (16-in.) image intensifier was performed in 144 patients with peripheral vascular insufficiency. In most cases the entire peripheral vascular bed from the renal arteries to the popliteal trifurcation was demonstrated with four intravenous injections and four exposed ...

journal_title：Radiology

authors： Passariello R,Rossi P,Simonetti G,Tempesta P,Pavone P,Castrucci M,McBride K

更新日期：1983-12-01 00:00:00

abstract：:The computed tomographic scans of 200 consecutive patients with Crohn disease were studied to determine the frequency and patterns of perirectal and perianal involvement. In 163 patients (82%) abnormalities in the perirectal-perianal region were demonstrated; findings included inflammation of fat planes (73%), bowel w...

journal_title：Radiology

authors： Yousem DM,Fishman EK,Jones B

更新日期：1988-05-01 00:00:00

abstract：PURPOSE:To evaluate the relationship between radiation doses and lung computed tomographic (CT) fluoroscopic scan parameters and to determine optimal scan parameters for performance of lung interventional radiologic (IR) procedures. MATERIALS AND METHODS:The institutional review board approved this prospective study, ...

journal_title：Radiology

authors： Yamao Y,Yamakado K,Takaki H,Yamada T,Murashima S,Uraki J,Kodama H,Nagasawa N,Takeda K

更新日期：2010-04-01 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：PURPOSE:To compare volume reduction of single-session ethanol ablation (EA) and radiofrequency (RF) ablation for cystic thyroid nodule treatment. MATERIALS AND METHODS:All patients gave written informed consent to participate in this prospective institutional review board-approved study. From May 6, 2010, to August 8,...

journal_title：Radiology

authors： Sung JY,Baek JH,Kim KS,Lee D,Yoo H,Kim JK,Park SH

更新日期：2013-10-01 00:00:00

abstract：PURPOSE:To define age-specific patterns of distribution of red and yellow marrow about the shoulder. MATERIALS AND METHODS:Red and yellow marrow distribution was reviewed on magnetic resonance images of 189 subjects aged 15-69 years. Double-echo and fast spin-echo, gradient, and short inversion time inversion recovery...

journal_title：Radiology

authors： Richardson ML,Patten RM

更新日期：1994-07-01 00:00:00

abstract：PURPOSE:To prospectively determine in swine the effects of cardiac-specific and hypoxia-inducible vascular endothelial growth factor (VEGF) expression gene on angiogenesis and arteriogenesis by using cardiovascular magnetic resonance (MR) imaging for evaluation of infarct resorption and left ventricular (LV) function. ...

journal_title：Radiology

authors： Saeed M,Saloner D,Martin A,Do L,Weber O,Ursell PC,Jacquier A,Lee R,Higgins CB

更新日期：2007-05-01 00:00:00

abstract：:The purpose of this study was to construct and evaluate a phantom for measurement of magnetic resonance (MR) imaging sections with thicknesses of 0.3-0.6 mm. The phantom consisted of 304 0.1-mm-thick disks, each of which had a single notch filled with a diluted solution of gadopentetate dimeglumine. Qualitative and qu...

journal_title：Radiology

authors： Lemke AJ,Kazi I,de Bary P,Bernhardt U,Foerster PI,Foerster M,Felix R

更新日期：2006-08-01 00:00:00

abstract：PURPOSE:To determine whether computed tomographic (CT) findings can help differentiate between benign and clinically worrisome causes of pneumatosis intestinalis (PI) in children. MATERIALS AND METHODS:This retrospective study was approved by the institutional review board, and requirement for informed consent was wai...

journal_title：Radiology

authors： Olson DE,Kim YW,Ying J,Donnelly LF

更新日期：2009-11-01 00:00:00

abstract：:Purpose To determine whether there is an association between radiologist shift length, schedule, or examination volume and interpretive accuracy. Materials and Methods This study was institutional review board approved and HIPAA compliant. A retrospective analysis of all major discrepancies from a 2015 quality assuran...

journal_title：Radiology

authors： Hanna TN,Lamoureux C,Krupinski EA,Weber S,Johnson JO

更新日期：2018-04-01 00:00:00

abstract：:Large volume and small discrete sources of Tc-99m were used to study the spatial resolution, sensitivity, linearity and reproducibility of the radionuclide brain images. The spatial resolution is constant both within and perpendicular to the section. For uniform distributions of activity the response is uniform over t...

journal_title：Radiology

authors： Flower MA,Parker RP,Coles IP,Fox RA,Trott NG

更新日期：1979-11-01 00:00:00

abstract：:The normal anatomy of the larynx and base of the tongue as seen on nuclear magnetic resonance (NMR) images was studied. Scans of normal volunteers were obtained using a 3.5 kilogauss (0.35 T) superconductive magnet and a 3.0 kilogauss (0.3 T) permanent magnet. The NMR images were compared with images obtained by CT an...

journal_title：Radiology

authors： Lufkin RB,Larsson SG,Hanafee WN

更新日期：1983-07-01 00:00:00

abstract：PURPOSE:To examine the performance and reproducibility of a commercially available computer-aided detection (CAD) system with a set of mammograms obtained in 100 patients who had undergone biopsy after positive findings at mammography. MATERIALS AND METHODS:One hundred positive mammographic examinations (four views ea...

journal_title：Radiology

authors： Zheng B,Hardesty LA,Poller WR,Sumkin JH,Golla S

更新日期：2003-07-01 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：:Intravascular injection of some radiographic contrast media causes a fall in the concentration of unbound serum calcium (Ca++) and an increase in serum immunoreactive parathyroid hormone (iPTH). The decrease in Ca++ levels was attributed to the presence in the contrast media of calcium chelating agents (disodium edeta...

journal_title：Radiology

authors： Mallette LE,Gomez LS

更新日期：1983-06-01 00:00:00

abstract：:Analysis of 9 cases of bilateral bent limbs (campomelia) and dwarfism, as well as a review of the literature, indicate that campomelic syndrome appears to be a well-defined distinct disorder which the authors call long-limbed campomelic syndrome. Other neonates with congenital bent-limbed dwarfism can be classified as...

journal_title：Radiology

authors： Khajavi A,Lachman R,Rimoin D,Schimke RN,Dorst J,Handmaker S,Ebbin A,Perreault G

更新日期：1976-09-01 00:00:00

abstract：:Twenty angiographic procedures involving the superior mesenteric artery (SMA) were performed with balloon occlusion catheters in dogs with chronic liver cirrhosis and portal hypertension. The following complications were found: (a) rapid balloon inflation during angiography due to a leak between the two catheter lumen...

journal_title：Radiology

authors： Burgener FA,Gutierrez OH,Logsdon GA

更新日期：1981-09-01 00:00:00

abstract：:Purpose To identify wall enhancement patterns on vessel wall MRI that discriminate between stable and unstable unruptured intracranial aneurysm (UIA). Materials and Methods Patients were included from November 2012 through January 2016. Vessel wall MR images were acquired at 3 T in patients with stable (incidental and...

journal_title：Radiology

authors： Edjlali M,Guédon A,Ben Hassen W,Boulouis G,Benzakoun J,Rodriguez-Régent C,Trystram D,Nataf F,Meder JF,Turski P,Oppenheim C,Naggara O

更新日期：2018-10-01 00:00:00

abstract：:Purpose To study the feasibility and impact of respiratory gating in positron emission tomographic (PET) imaging in a clinical trial comparing conventional hardware-based gating with a data-driven approach and to describe the distribution of determined parameters. Materials and Methods This prospective study was appro...

journal_title：Radiology

authors： Büther F,Vehren T,Schäfers KP,Schäfers M

更新日期：2016-10-01 00:00:00

abstract：PURPOSE:To evaluate the effectiveness of magnetic resonance (MR) imaging for assessment of the present and extent of tumor recurrence as determined with pathologic and surgical findings. MATERIALS AND METHODS:MR findings were retrospectively examined in 37 patients with a history of cervical carcinoma. Inter- and intr...

journal_title：Radiology

authors： Weber TM,Sostman HD,Spritzer CE,Ballard RL,Meyer GA,Clark-Pearson DL,Soper JT

更新日期：1995-01-01 00:00:00

abstract：:The authors report an inflammatory fibroid polyp of the colon which simulated a tumor on the air-contrast barium-enema examination. Histological evaluation revealed the inflammatory nature of the polyp. These rare lesions can be radiographically indistinguishable from primary colon carcinoma. ...

journal_title：Radiology

authors： Ferin P,Skucas J

更新日期：1983-10-01 00:00:00

abstract：:Percutaneous cholecystostomy was performed in 36 patients, of whom 22 patients with acute cholecystitis had decompression of the gallbladder and 14 patients with common duct obstruction had biliary decompression through the gallbladder. In almost all cases of acute cholecystitis, percutaneous cholecystostomy quickly c...

journal_title：Radiology

authors： Pearse DM,Hawkins IF Jr,Shaver R,Vogel S

更新日期：1984-08-01 00:00:00

abstract：PURPOSE:To determine, in a dual-center setting, whether patients who experience transient severe motion ( TSM transient severe motion ) in the arterial phase during gadoxetate disodium-enhanced magnetic resonance (MR) imaging are at higher risk for a subsequent episode of TSM transient severe motion than patients who d...

journal_title：Radiology

authors： Bashir MR,Castelli P,Davenport MS,Larson D,Marin D,Hussain HK,Jaffe TA

更新日期：2015-01-01 00:00:00

abstract：PURPOSE:To retrospectively determine if three-dimensional (3D) viewing improves radiologists' accuracy in classifying true-positive (TP) and false-positive (FP) polyp candidates identified with computer-aided detection (CAD) and to determine candidate polyp features that are associated with classification accuracy, wit...

journal_title：Radiology

authors： Shi R,Schraedley-Desmond P,Napel S,Olcott EW,Jeffrey RB Jr,Yee J,Zalis ME,Margolis D,Paik DS,Sherbondy AJ,Sundaram P,Beaulieu CF

更新日期：2006-06-01 00:00:00

abstract：PURPOSE:To assess and compare intimal and medial vascular damage caused by three mechanical wall-contact thrombectomy devices: Fogarty embolectomy catheter, Arrow-Trerotola peripheral thrombectomy device, and MTI-Castañeda over-the-wire brush. MATERIALS AND METHODS:Bilateral external iliac arteries of 15 canines were ...

journal_title：Radiology

authors： Castañeda F,Li R,Patel J,DeBord JR,Swischuk JL

更新日期：2001-04-01 00:00:00