Pulmonary embolism: comprehensive diagnosis by using electron-beam CT for detection of emboli and assessment of pulmonary blood flow.

abstract：PURPOSE:To analyze the contribution of the transverse relaxation parameter (T2), macroscopic field inhomogeneities (B0), and blood volume fraction (BVf) to blood oxygen level-dependent (BOLD)-based magnetic resonance (MR) measurements of blood oxygen saturation (SO2) obtained in a brain tumor model. MATERIALS AND METH...

journal_title：Radiology

authors： Christen T,Lemasson B,Pannetier N,Farion R,Remy C,Zaharchuk G,Barbier EL

更新日期：2012-02-01 00:00:00

abstract：PURPOSE:To compare two different three-dimensional (3D) gadolinium-enhanced magnetic resonance (MR) angiographic techniques. MATERIALS AND METHODS:In 26 patients suspected of having renal artery stenosis, results with fast multiphase 3D MR angiography were compared to those with standard 3D MR angiography in 37 patien...

journal_title：Radiology

authors： Schoenberg SO,Bock M,Knopp MV,Essig M,Laub G,Hawighorst H,Zuna I,Kallinowski F,van Kaick G

更新日期：1999-06-01 00:00:00

abstract：:Pulmonary angiography is sensitive and specific in the diagnosis of pulmonary thromboembolism, but it remains an invasive procedure. Experience with 1,350 pulmonary angiograms was reviewed to ascertain the incidence, etiologies, and avoidance of complications. There were three deaths, all of which were secondary to co...

journal_title：Radiology

authors： Mills SR,Jackson DC,Older RA,Heaston DK,Moore AV

更新日期：1980-08-01 00:00:00

abstract：:Operative ligation of portosystemic shunts is effective in controlling chronic portosystemic encephalopathy (CPSE) but is associated with significant mortality. Review of the records of five patients with CPSE treated with radiologic occlusion procedures showed that these are suitable alternatives to surgery. Three pa...

journal_title：Radiology

authors： Uflacker R,Silva Ade O,d'Albuquerque LA,Piske RL,Mourão GS

更新日期：1987-12-01 00:00:00

abstract：:Intracranial tuberculoma was studied by computed tomography (CT) in eight patients. Upon contrast enhancement, two patterns were seen: (a) a small enhancing ring with a central punctate lucent area, and (b) nodular enhancement. The various CT findings are correlated with the clinical features and with the appearance o...

journal_title：Radiology

authors： Whelan MA,Stern J

更新日期：1981-01-01 00:00:00

abstract：:Bilateral peripheral pulmonary infiltrates caused by Pneumocystis carinii developed in a patient undergoing mediastinal irradiation after chemotherapy for Hodgkin disease. The paramediastinal part of the lung included within the treatment port remained clear during the 2 1/2 weeks of radiation therapy. The distributio...

journal_title：Radiology

authors： Panicek DM,Groskin SA,Chung CT,Heitzman ER,Sagerman RH

更新日期：1987-06-01 00:00:00

abstract：PURPOSE:To evaluate the use of simultaneous defecography and peritoneography (defecoperitoneography) in patients with an unexplained widening of the rectovaginal space noted at defecography. MATERIALS AND METHODS:Twenty-two patients with unexplained widening of the rectovaginal space noted at defecography were studied...

journal_title：Radiology

authors： Bremmer S,Mellgren A,Holmström B,López A,Udén R

更新日期：1997-02-01 00:00:00

abstract：PURPOSE:To determine the accuracy of multidetector computed tomography (CT) in the detection of surgically important blunt bowel and/or mesenteric injury, to identify and describe the most reliable CT features of bowel and/or mesenteric injury, and to evaluate the performance of readers with different levels of experti...

journal_title：Radiology

authors： Atri M,Hanson JM,Grinblat L,Brofman N,Chughtai T,Tomlinson G

更新日期：2008-11-01 00:00:00

abstract：:Gas within embolized, uninfected tumors has been ascribed to either carbon dioxide produced through anaerobic reticulocyte metabolism or oxygen release from oxyhemoglobin. An alternative hypothesis explaining the presence of gas within embolized, uninfected tumors, namely, that gas is introduced during the embolizatio...

journal_title：Radiology

authors： Carroll BA,Walter JF

更新日期：1983-05-01 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：:To improve reproducibility in proton magnetic resonance (MR) spectroscopic imaging in human brain, simultaneous acquisition of the internal water reference and metabolite signals was evaluated. Measurements in healthy volunteers showed that the increase in dynamic range from signal oversampling was sufficient to avoid...

journal_title：Radiology

authors： van Der Veen JW,Weinberger DR,Tedeschi G,Frank JA,Duyn JH

更新日期：2000-10-01 00:00:00

abstract：PURPOSE:To retrospectively evaluate imaging characteristics of surgically proved sublabral recesses and labral tears in the anterior portion of the acetabulum at magnetic resonance (MR) arthrography. MATERIALS AND METHODS:Institutional review board approval was obtained; informed consent was waived. The study included...

journal_title：Radiology

authors： Studler U,Kalberer F,Leunig M,Zanetti M,Hodler J,Dora C,Pfirrmann CW

更新日期：2008-12-01 00:00:00

abstract：:A retrospective review of 39 cases of hypochondroplasia revealed consistent but variable degrees of clinical and radiological features sufficient to allow differentiation from other well-established metaphyseal chondrodysplasias. Macrocephaly was noted in approximately half the cases. This contradicts a finding of nor...

journal_title：Radiology

authors： Hall BD,Spranger J

更新日期：1979-10-01 00:00:00

abstract：:There are multiple causes for hematuria in infants and children. When hematuria is accompanied by dysuria, however, one should focus attention on the lower urinary tract. Although ultrasound (US) is a well-established method for assessing the kidneys and bladder, little attention has been focused on its use for evalua...

journal_title：Radiology

authors： Kessler A,Rosenberg HK,Smoyer WE,Blyth B

更新日期：1992-12-01 00:00:00

abstract：:Gray-scale ultrasonography of the thyroid was performed in 33 patients, utilizing a commercially available scanning unit and an aqueous gel coupling medium. Solid and cystic lesions could readily be differentiated, but it was impossible to tell benign lesions from malignant tumors. The ultrasound appearance of thyroid...

journal_title：Radiology

authors： Chilcote WS

更新日期：1976-08-01 00:00:00

abstract：:A 22 gauge "skinny core" (Madayag) biopsy needle, an 18 gauge Menghini needle, and a 14 gauge Tru-cut needle were compared in 51 patients. The Madayag needle was found to have a high recovery rate and provided adequate histological information in a large percentage of cases. However, the larger needles more consistent...

journal_title：Radiology

authors： Haaga JR,LiPuma JP,Bryan PJ,Balsara VJ,Cohen AM

更新日期：1983-03-01 00:00:00

abstract：:Nine patients who had acute and subacute stroke were examined by nuclear magnetic resonance (NMR) using a 6-MHz Bruker Instruments proton scanner. A modified Carr-Purcell-Meiboom-Gill pulse sequence was used for signal detection. The resultant string of spin-echoes was Fourier transformed into projections that were su...

journal_title：Radiology

authors： Bryan RN,Willcott MR,Schneiders NJ,Ford JJ,Derman HS

更新日期：1983-10-01 00:00:00

abstract：:In a series of 526 consecutive, unprepared patients examined by ultrasound, the gallbladder was visualized in 507 (96%). The average wall thickness was 2 mm or less in 97% of asymptomatic subjects without cholelithiasis and 3 mm or greater in 45% of those with choletithiasis. Pathologic correlation of increased thickn...

journal_title：Radiology

authors： Finberg HJ,Birnholz JC

更新日期：1979-12-01 00:00:00

abstract：:Purpose To assess the utility of established functional markers versus two additional functional markers derived from standard cardiovascular magnetic resonance (MR) images for their incremental diagnostic and prognostic information in patients with nonischemic dilated cardiomyopathy (NIDCM). Materials and Methods App...

journal_title：Radiology

authors： Arenja N,Riffel JH,Fritz T,André F,Aus dem Siepen F,Mueller-Hennessen M,Giannitsis E,Katus HA,Friedrich MG,Buss SJ

更新日期：2017-06-01 00:00:00

abstract：:Purpose To compare the diagnostic performance of minimally invasive autopsy with that of conventional autopsy. Materials and Methods For this prospective, single-center, cross-sectional study in an academic hospital, 295 of 2197 adult cadavers (mean age: 65 years [range, 18-99 years]; age range of male cadavers: 18-99...

journal_title：Radiology

authors： Blokker BM,Weustink AC,Wagensveld IM,von der Thüsen JH,Pezzato A,Dammers R,Bakker J,Renken NS,den Bakker MA,van Kemenade FJ,Krestin GP,Hunink MGM,Oosterhuis JW

更新日期：2018-12-01 00:00:00

abstract：PURPOSE:To derive a suitable method for grading masticator space invasion in nasopharyngeal carcinoma on the basis of magnetic resonance (MR) images and to determine its prognostic value in patients undergoing intensity-modulated radiation therapy. MATERIALS AND METHODS:After institutional review board approval and in...

journal_title：Radiology

authors： Zhang GY,Huang Y,Cai XY,Chen XP,Xu T,Wu J,Wei WH,Liu LZ,Huang ZL,Zhou MM,Xia ST,Wang YJ

更新日期：2014-10-01 00:00:00

abstract：:Emission computed tomography (ECT) studies were performed on test objects and dogs. Conjugate views were obtained for 60 to 120 projections equispaced around 360 degrees by rotation of the subjects in front of a gamma camera. A convolution reconstruction algorithm in which gamma ray attenuation corrections are include...

journal_title：Radiology

authors： Gustafson DE,Berggren MJ,Singh M,Dewanjee MK

更新日期：1978-10-01 00:00:00

abstract：:An international working group has modified the Atlanta classification for acute pancreatitis to update the terminology and provide simple functional clinical and morphologic classifications. The modifications (a) address the clinical course and severity of disease, (b) divide acute pancreatitis into interstitial edem...

journal_title：Radiology

authors： Thoeni RF

更新日期：2012-03-01 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：:The diagnosis of seminal vesicle invasion by prostatic carcinoma is based on observation of foci of relatively decreased signal intensity on T2-weighted magnetic resonance (MR) images. Similar findings were observed in the absence of tumor invasion in nine patients who had recently undergone prostatic needle biopsy. N...

journal_title：Radiology

authors： Mirowitz SA

更新日期：1992-11-01 00:00:00

abstract：PURPOSE:To determine the feasibility of measuring choline and glycogen concentrations in normal human liver in vivo with proton (hydrogen 1 [1H]) magnetic resonance (MR) spectroscopy. MATERIALS AND METHODS:Signed consent to participate in an institutional review board-approved and HIPAA-compliant study was obtained fr...

journal_title：Radiology

authors： Ouwerkerk R,Pettigrew RI,Gharib AM

更新日期：2012-11-01 00:00:00

abstract：:The rates of diabetes, obesity, and metabolic disease have reached epidemic proportions worldwide. In recent years there has been renewed interest in combating these diseases not only by modifying energy intake and lifestyle factors, but also by inducing endogenous energy expenditure. This approach has largely been st...

journal_title：Radiology

authors： Sampath SC,Sampath SC,Bredella MA,Cypess AM,Torriani M

更新日期：2016-07-01 00:00:00

abstract：PURPOSE:To develop an ultrasound (US) extended-field-of-view scanning technique that combines the convenience of a real-time scanner with the spatial advantages of a static B-mode scanner and provides a panoramic image in real time without position sensors or cumbersome articulated arms. MATERIALS AND METHODS:An image...

journal_title：Radiology

authors： Weng L,Tirumalai AP,Lowery CM,Nock LF,Gustafson DE,Von Behren PL,Kim JH

更新日期：1997-06-01 00:00:00

abstract：:Purpose To determine whether functional outcomes of veterans who sustained combat-related mild traumatic brain injury (TBI) are associated with scalar metrics derived from diffusion-tensor (DT) imaging at their initial postdeployment evaluation. Materials and Methods This HIPAA-compliant retrospective study was approv...

journal_title：Radiology

authors： Ware JB,Biester RC,Whipple E,Robinson KM,Ross RJ,Nucifora PG

更新日期：2016-07-01 00:00:00

abstract：:Afterloading techniques were developed for the in vivo assessment of the RBE of californium-252 with respect of radium-226 using a fibrosarcoma in mice. The afterloading holder positions sources so that the tumor is uniformly irradiated. Using the end points of tumor volumetric studies up to 150 days after irradiation...

journal_title：Radiology

authors： Moser FL,Lanzi LH,Mewissen DJ,Furedi EM,Rozenfeld M

更新日期：1975-10-01 00:00:00