Mapping Hypoxia in Renal Carcinoma with Oxygen-enhanced MRI: Comparison with Intrinsic Susceptibility MRI and Pathology.

abstract：:Scattered radiation and veiling glare in digital subtraction angiography degrade contrast signals in a nonlinear and nonuniform way. This effect prohibits direct use of image data for accurate iodine measurement or energy subtraction imaging. Two techniques based on the use of scanning lead bars were proposed to measu...

journal_title：Radiology

authors： Shaw CG,Plewes DB

更新日期：1985-10-01 00:00:00

abstract：PURPOSE:To assess methods of standard uptake ratio (SUR) calculation with 2-deoxy-2-[fluorine-18]fluoro-D-glucose (FDG) positron emission tomography (PET) in indeterminate focal pulmonary abnormalities. MATERIALS AND METHODS:One hundred ninety-seven adult patients with indeterminate pulmonary abnormalities had complet...

journal_title：Radiology

authors： Lowe VJ,Duhaylongsod FG,Patz EF,Delong DM,Hoffman JM,Wolfe WG,Coleman RE

更新日期：1997-02-01 00:00:00

abstract：:Radiographic images can be converted into numerical sequences that can be evalueate by computer to determine the significance of certain radiographic findings in peripheral pulmonary nodules. Of three methods (discriminant analysis. Bayes' theoroem, and the Calm system), discriminant analysis has proven the best with ...

journal_title：Radiology

authors： Rotte KH,Meiske W

更新日期：1977-12-01 00:00:00

abstract：:A review of 210 chest computed tomographic (CT) examinations demonstrating upper chest masses revealed 16 cases of superior vena caval obstruction (SVCO); 11 of these were clinically occult. Two of the occult cases subsequently became clinically evident. Contrast-enhanced chest CT permits the diagnosis of clinically o...

journal_title：Radiology

authors： Bechtold RE,Wolfman NT,Karstaedt N,Choplin RH

更新日期：1985-11-01 00:00:00

abstract：PURPOSE:To prospectively evaluate the elastographic appearance of thyroid gland tumors and explore the potential sensitivity and specificity of ultrasonographic (US) elastography for differentiating benign and malignant tumors, with histopathologic analysis as the reference standard. MATERIALS AND METHODS:The study wa...

journal_title：Radiology

authors： Lyshchik A,Higashi T,Asato R,Tanaka S,Ito J,Mai JJ,Pellot-Barakat C,Insana MF,Brill AB,Saga T,Hiraoka M,Togashi K

更新日期：2005-10-01 00:00:00

abstract：PURPOSE:To compare prospectively obtained static two-dimensional (2D) and three-dimensional (3D) ultrasonographic (US) images in the diagnostic performance of radiologists with respect to the differentiation of benign from malignant solid breast masses with histopathologic examination as the reference standard. MATERI...

journal_title：Radiology

authors： Cho N,Moon WK,Cha JH,Kim SM,Han BK,Kim EK,Kim MH,Chung SY,Choi HY,Im JG

更新日期：2006-07-01 00:00:00

abstract：PURPOSE:To prospectively evaluate multiobserver diagnostic performance and reader agreement for colorectal polyp detection in a well-characterized cohort of patients with increased number of polyps, compared with an average-risk patient, with colonoscopy as the reference standard. MATERIALS AND METHODS:A cohort of 70 ...

journal_title：Radiology

authors： McFarland EG,Pilgram TK,Brink JA,McDermott RA,Santillan CV,Brady PW,Heiken JP,Balfe DM,Weinstock LB,Thyssen EP,Littenberg B

更新日期：2002-11-01 00:00:00

abstract：PURPOSE:To compare measures of diagnostic accuracy between large concurrent cohorts of women screened with digital computed radiography (CR), direct radiography (DR), and screen-film mammography (SFM). MATERIALS AND METHODS:This study was approved by the University of Toronto Research Ethics Board; informed consent wa...

journal_title：Radiology

authors： Prummel MV,Muradali D,Shumak R,Majpruz V,Brown P,Jiang H,Done SJ,Yaffe MJ,Chiarelli AM

更新日期：2016-02-01 00:00:00

abstract：PURPOSE:To determine the appearance of treated thymic lymphoma at magnetic resonance (MR) imaging and to compare the results with findings from posttherapy computed tomography (CT) and clinical outcome. MATERIALS AND METHODS:MR images and CT scans in 25 patients with thymic lymphoma were reviewed. Dimensions of residu...

journal_title：Radiology

authors： Spiers AS,Husband JE,MacVicar AD

更新日期：1997-05-01 00:00:00

abstract：:Lung abscesses were drained by means of catheters guided by computed tomography (CT) in 19 patients who still had sepsis despite standard medical therapy; all patients had received antibiotics for at least 5 days, and 11 of the 19 patients had undergone bronchoscopy. The abscess was cured (by clinical and radiographic...

journal_title：Radiology

authors： vanSonnenberg E,D'Agostino HB,Casola G,Wittich GR,Varney RR,Harker C

更新日期：1991-02-01 00:00:00

abstract：:Fifty-eight patients with focal mass lesions involving the gastrointestinal tract were studied retrospectively. The diagnostic value of CT scans was seen by assessing the barium studies alone, then by combined review of radiographs and CT scans. Patient management decision making was similarly evaluated. CT scanning a...

journal_title：Radiology

authors： Coscina WF,Arger PH,Levine MS,Herlinger H,Cohen S,Coleman BG,Mintz MC

更新日期：1986-03-01 00:00:00

abstract：PURPOSE:To test the hypothesis that computed tomographic (CT) scanning during early rather than middle diastole can significantly reduce the interscan variability of coronary artery calcium (CAC) scores. MATERIALS AND METHODS:Five hundred thirty-eight patients were initially enrolled; 282 of them were found to have CA...

journal_title：Radiology

authors： Mao S,Bakhsheshi H,Lu B,Liu SC,Oudiz RJ,Budoff MJ

更新日期：2001-09-01 00:00:00

abstract：:The National Electrical Manufacturers Association (NEMA) has established a new standard for x-ray tube focal-spot measurements using a focal-spot camera with a slit instead of a pinhole. Measurements from the slit focal-spot camera are compared and star resolution pattern techniques for 50 focal spots. In addition, me...

journal_title：Radiology

authors： Everson JD,Gray JE

更新日期：1987-10-01 00:00:00

abstract：:Vessel rupture complicating transluminal angioplasty is an uncommon event, especially in the renal artery. The authors report such a case, which was treated with immediate balloon tamponade and did not require surgical intervention. Possible causes and appropriate management are discussed, as well as the need for repo...

journal_title：Radiology

authors： Ashenburg RJ,Blair RJ,Rivera FJ,Weigele JB

更新日期：1990-03-01 00:00:00

abstract：:The feasibility of using focused ultrasound for studying structures as small as biliary ducts and correlative radiological and ultrasonic studies of the common and larger hepatic ducts are presented. Patients whose bile ducts were visualized on intravenous or T-tube cholangiography or oral cholecystography underwent r...

journal_title：Radiology

authors： Reid MH

更新日期：1976-01-01 00:00:00

abstract：PURPOSE:To investigate the implications of mistaking the medial surface of the cerebral hemisphere for the medial wall of the lateral ventricle at antenatal ultrasonography (US) and to identify US clues that might help avoid this interpretive error. MATERIALS AND METHODS:In 50 second- and third-trimester fetuses, a di...

journal_title：Radiology

authors： Hertzberg BS,Kliewer MA,Bowie JD

更新日期：1997-12-01 00:00:00

abstract：:The Kimray-Greenfield filter is a wire cage which is inserted into the inferior vena cava (IVC) to prevent thrombi originating in pelvic and leg veins from embolizing to the lungs. Duplex real-time/pulsed Doppler ultrasound was used to evaluate placement and function in 38 patients (46 examinations). Real-time examina...

journal_title：Radiology

authors： Pasto ME,Kurtz AB,Jarrell BE,Dubbins PA,Rifkin MD,Cole-Beuglet C,Baltarowich O,Goldberg BB

更新日期：1983-07-01 00:00:00

abstract：:The CT findings in two surgically proved cases of spontaneous chronic extradural hematoma are presented. Tapered convex margins, a length greater than 2 cm, and associated normal intervertebral disks are findings that help distinguish chronic extradural hematoma from an extruded disk. ...

journal_title：Radiology

authors： Levitan LH,Wiens CW

更新日期：1983-09-01 00:00:00

abstract：:Many physico-anatomic variables and instrument parameters influence the relative magnetic resonance signal intensity of vascular channels. The interaction of these mechanisms is complex, but their composite effects can be accounted for by two main categories of flow phenomena: time-of-flight effects and spin-phase cha...

journal_title：Radiology

authors： Kucharczyk W,Kelly WM,Davis DO,Norman D,Newton TH

更新日期：1986-12-01 00:00:00

abstract：:The primary disadvantage of hard-wired data systems for use in nuclear medicine is the fact that that the data contained in the memory bank are not accessible to the user and often must be processed mathematically before they can be employed in interpretation, particularly in dynamic studies. The authors describe a re...

journal_title：Radiology

authors： Shearer D,Rollins M

更新日期：1976-01-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate the safety and efficacy of percutaneous image-guided laser photocoagulation for the treatment of spinal osteoid osteoma (OO) in proximity to neural structures. MATERIALS AND METHODS:This study was institutional review board-approved with waivers of informed consent. From January 199...

journal_title：Radiology

authors： Tsoumakidou G,Thénint MA,Garnon J,Buy X,Steib JP,Gangi A

更新日期：2016-03-01 00:00:00

abstract：:Left atrial-coronary sinus fenestration is a rare cause of a left-to-right or right-to-left shunt which occurs most commonly with a persistent left superior vena cava. These fenestrations may represent the only pathway for an obligatory right-to-left or left-to-right shunt in atrioventricular valve atresia. Four cases...

journal_title：Radiology

authors： Nath PH,Delaney DJ,Zollikofer C,Ben-Sachar G,Castaneda-Zuniga W,Formanek A,Amplatz K

更新日期：1980-05-01 00:00:00

abstract：:Bone scans using Tc-99m diphosphonate were found to become abnormal within 2 weeks after laminectomy in less than half of patients regardless of the extent of the operation. The degree of new uptake equaled that of the sacroiliac joints in only one of 19 patients with a normal preoperative scan. However, the Ga-67 cit...

journal_title：Radiology

authors： Silberstein EB,Schneider HJ,Khodadad G,DeVries D,Rauf GC,Noll R

更新日期：1984-06-01 00:00:00

abstract：:A technique to perform a liver biopsy through the femoral vein with the Mansfield biopsy forceps is described. Nine liver biopsy procedures were performed in seven patients who were considered at high risk of bleeding, precluding a conventional transperitoneal biopsy. The technique is an easy, safe, and well-tolerated...

journal_title：Radiology

authors： Mewissen MW,Lipchik EO,Schreiber ER,Varma RR

更新日期：1988-12-01 00:00:00

abstract：PURPOSE:To quantify dynamic enhancement of breast lesions with echo-planar and conventional magnetic resonance (MR) imaging, to correlate these data with histologic findings and vessel density, and to evaluate MATERIALS AND METHODS:Twenty female patients with 22 breast lesions underwent conventional and MR echo-planar...

journal_title：Radiology

authors： Hulka CA,Smith BL,Sgroi DC,Tan L,Edmister WB,Semple JP,Campbell T,Kopans DB,Brady TJ,Weisskoff RM

更新日期：1995-10-01 00:00:00

abstract：:The angiographic appearance in a patient with multiple bile-duct hamartomas of the liver is described. The lesions showed abnormal vascularity, consisting of grapelike clusters of small rings, which could be confused with other benign and malignant conditions demonstrable by angiography; however, it may ultimately pro...

journal_title：Radiology

authors： McLoughlin MJ,Phillips MJ

更新日期：1975-07-01 00:00:00

abstract：PURPOSE:To determine if a tiny enhancing dot is characteristic of small hemangiomas with low attenuation during the hepatic arterial phase (HAP) and portal venous phase (PVP) of two-phase spiral computed tomography (CT). MATERIALS AND METHODS:Among 249 consecutive patients with 377 hemangiomas who underwent two-phase ...

journal_title：Radiology

authors： Jang HJ,Choi BI,Kim TK,Yun EJ,Kim KW,Han JK,Han MC

更新日期：1998-08-01 00:00:00

abstract：PURPOSE:To assess the repeatability in human volunteers of software-quantified small bowel motility captured with magnetic resonance (MR) imaging and to test the ability to detect changes in motility induced by pharmacologic agents. MATERIALS AND METHODS:The study was approved by the Royal Free Research Ethics Committ...

journal_title：Radiology

authors： Menys A,Taylor SA,Emmanuel A,Ahmed A,Plumb AA,Odille F,Alam A,Halligan S,Atkinson D

更新日期：2013-11-01 00:00:00

abstract：:Radiology chiefs at hospitals with open heart surgery programs were queried to ascertain both current and desired degrees of participation by radiologists in coronary angiography. While current participation is limited, respondents indicated a desire to achieve increased active participation. Opposition of cardiologis...

journal_title：Radiology

authors： Levin DC,Adams DF,Abrams HL

更新日期：1977-11-01 00:00:00

abstract：:Purpose To compare low- versus high-frequency ultrasonographic (US) elastography for detection of steatohepatitis in rats by using histopathologic findings as the reference standard. Materials and Methods Between March and September 2014, after receiving approval from the institutional animal care committee, 60 male S...

journal_title：Radiology

authors： Kazemirad S,Zhang E,Nguyen BN,Bodson-Clermont P,Destrempes F,Trudel D,Cloutier G,Tang A

更新日期：2017-03-01 00:00:00