Identification of pulmonary vein stenosis after radiofrequency ablation for atrial fibrillation using MRI.

abstract：PURPOSE:On contrast-enhanced hepatic CT, maximum tumor detection of liver metastases from colorectal cancer is achieved at peak hepatic enhancement. We investigated the relationship between injection time of contrast medium and time to peak hepatic enhancement (TPHE) after the end of injection. METHOD:One hundred nine...

journal_title：Journal of computer assisted tomography

authors： Irie T,Kusano S

更新日期：1996-07-01 00:00:00

abstract：:Clinical evaluation of neuromuscular disorders typically consists of obtaining a detailed clinical history, physical examination, and electrophysiologic examinations. Electrodiagnostic examinations significantly aid in distinguishing between myopathy, neuropathy, and neuromuscular disorders. Electrodiagnostic examinat...

journal_title：Journal of computer assisted tomography

authors： Elsayes KM,Shariff A,Staveteig PT,Mukundan G,Khosla A,Rubin DA

更新日期：2005-05-01 00:00:00

abstract：:Diffuse cavernous hemangioma of the rectosigmoid colon (DCHR) is an uncommon disease that affects mainly young adults. As the main symptom is non-specific chronic rectal bleeding, the clinical diagnosis is difficult and often delayed. In this essay, we illustrate the imaging features of DCHR, including plain radiograp...

journal_title：Journal of computer assisted tomography

authors： Djouhri H,Arrivé L,Bouras T,Martin B,Monnier-Cholley L,Tubiana JM

更新日期：1998-11-01 00:00:00

abstract：PURPOSE:The goal of this study was to evaluate a newly developed semiautomated contour detection algorithm for the quantitative analysis of cardiovascular MRI. METHOD:Left ventricular function parameters derived from automatically detected endocardial and epicardial contours were compared with results derived from man...

journal_title：Journal of computer assisted tomography

authors： van der Geest RJ,Buller VG,Jansen E,Lamb HJ,Baur LH,van der Wall EE,de Roos A,Reiber JH

更新日期：1997-09-01 00:00:00

abstract：:The authors describe a technique for automated analysis of lesions demonstrated by computed tomography. A seed circle may be superimposed on a lesion by an operator controlled program. By selecting density limits, the program will then automatically outline a particular area of abnormal density and calculate the stati...

journal_title：Journal of computer assisted tomography

authors： Hand WM,Wilk J,Huckman MS

更新日期：1977-07-01 00:00:00

abstract：:In this review, our intension is to present imaging features of several categories of uncommon cases of brain infarctions including infarctions associated with neurovascular variants, infarctions along small arterial territories, and brainstem stroke syndromes. Infarctions associated with neurovascular variants includ...

journal_title：Journal of computer assisted tomography

authors： Abdelrasoul AA,Elsebaie NA,Gamaleldin OA,Khalifa MH,Razek AAKA

更新日期：2019-05-01 00:00:00

abstract：PURPOSE:The goal of our study was to assess the prevalence of pseudolesion in segment IV of the liver on MRI in patients with and without liver cirrhosis. METHOD:Patients were divided into three groups: 10 patients with angiographically confirmed aberrant gastric venous drainage and liver cirrhosis (Group 1), 250 cons...

journal_title：Journal of computer assisted tomography

authors： Ueda K,Matsui O,Kadoya M,Yoshikawa J,Gabata T,Takahashi S,Kawamori Y,Takashima T

更新日期：1999-01-01 00:00:00

abstract：:Uterine cirsoid aneurysm is uncommon. It is important to make a diagnosis of this disease preoperatively, because repeated curettages may induce life-threatening massive genital bleeding. We present a case of a 51-year-old woman with uterine cirsoid aneurysm in whom MRI and MRA were very useful for the preoperative di...

journal_title：Journal of computer assisted tomography

authors： Joja I,Asakawa M,Motoyama K,Mitsumori A,Nakagawa T,Kanazawa S,Kuroda M,Togami I,Hiraki Y,Kudo T

更新日期：1996-03-01 00:00:00

abstract：PURPOSE:To determine the frequency of extrathoracic metastases in T1 non-small-cell lung cancer. METHOD:Ninety patients with T1 lung cancer identified on CT were included. Extrathoracic metastases were evaluated at the time of initial diagnosis and during a 1-year follow-up study. The frequency of metastases was compa...

journal_title：Journal of computer assisted tomography

authors： Jung KJ,Lee KS,Kim H,Kwon OJ,Kim J,Shim YM,Kim TS

更新日期：2000-09-01 00:00:00

abstract：:A lipoma eroding the scapula is diagnosed by computed tomography. ...

journal_title：Journal of computer assisted tomography

authors： Lloyd TV,Paul DJ

更新日期：1979-10-01 00:00:00

abstract：OBJECTIVE:The dimensions of the optic nerves, chiasm, and tracts were determined in normal patients and in patients with clinical evidence of optic atrophy to establish whether there was a significant difference between the two groups. MATERIALS AND METHODS:The authors analyzed thin section coronal MRI of 110 patients...

journal_title：Journal of computer assisted tomography

authors： Parravano JG,Toledo A,Kucharczyk W

更新日期：1993-09-01 00:00:00

abstract：:We propose an adaptive nonlocal means approach for image-domain material decomposition in low-dose dual-energy micro-computed tomography. The key idea is to create a distribution map for decomposition error and assign a smooth weight for a given pixel. This method is applied to the decomposed images of 3 basis materia...

journal_title：Journal of computer assisted tomography

authors： Yuan Y,Zhang Y,Yu H

更新日期：2018-11-01 00:00:00

abstract：:A 45-year-old patient with focal intrahepatic extramedullary hematopoiesis is presented in which the liver was imaged by CT, ultrasound, and MR. The appearance of the lesions on MR consisted of slightly increased signal on T2-weighted images with heterogeneous enhancement of some of the lesions during bolus infusion o...

journal_title：Journal of computer assisted tomography

authors： Warshauer DM,Schiebler ML

更新日期：1991-07-01 00:00:00

abstract：PURPOSE:The purpose of this work was to investigate the ultrasound (US) and CT features of dropped gallstones mimicking peritoneal seeding in patients after laparoscopic cholecystectomy (LCC). METHOD:We describe the US and CT features of dropped gallstones mimicking peritoneal seeding in eight patients who underwent L...

journal_title：Journal of computer assisted tomography

authors： Atri M,Bonifacio A,Ryan M,Pilleul FL,Hanbidge A,Clark J,Murphy J

更新日期：2002-11-01 00:00:00

abstract：OBJECTIVE:To determine the differences in enhancement of hepatocellular carcinoma during the first 5 minutes of postcontrast phases with gadoxetic acid (Gd-EOB-DTPA) vs gadobenate dimeglumine. METHODS:Ninety-five cirrhotic patients with hepatocellular carcinoma were examined on a 1.5-T scanner: 74 patients with Gd-BOP...

journal_title：Journal of computer assisted tomography

authors： Tirkes T,Mehta P,Aisen AM,Lall C,Akisik F

更新日期：2015-07-01 00:00:00

abstract：:We describe the case of a 50-year-old man with history of remote splenectomy who underwent routine lung cancer screening chest computed tomography and was incidentally found to have a liver lesion. Dedicated liver protocol computed tomography demonstrated "archiform" enhancement pattern in the arterial phase and homog...

journal_title：Journal of computer assisted tomography

authors： Varghese J,Bergson J,Yaipen O

更新日期：2018-09-01 00:00:00

abstract：:Three-dimensional volumetric rendering of CT data has proven to be valuable in the evaluation of the hip. Although video loop animation allows review of the anatomy from all perspectives, it does not show the functional range of motion of the femur in the acetabulum. We have developed a technique termed simulated dyna...

journal_title：Journal of computer assisted tomography

authors： Gerber JD,Ney DR,Magid D,Fishman EK

更新日期：1991-01-01 00:00:00

abstract：OBJECTIVE:We describe and evaluate a preoperative MRI localization procedure for suspected breast lesions. MATERIALS AND METHODS:Fourteen consecutive patients underwent MR localization of suspected breast lesions discovered with contrast-enhanced MRI but not detected by conventional mammography or ultrasound. In each ...

journal_title：Journal of computer assisted tomography

authors： Fischer U,Vosshenrich R,Bruhn H,Keating D,Raab BW,Oestmann JW

更新日期：1995-01-01 00:00:00

abstract：:The design of a high resolution positron emission tomograph is described. The scanner has four rings of detectors with an inside diameter of 38 cm and produces seven simultaneous slices, including three cross-slices. Each ring contains 128 bismuth germanate scintillation detectors with dimensions of 8.25 x 20 x 35 mm;...

journal_title：Journal of computer assisted tomography

authors： Brooks RA,Sank VJ,Di Chiro G,Friauf WS,Leighton SB

更新日期：1980-02-01 00:00:00

abstract：:Weighting is the term most frequently used to describe magnetic resonance pulse sequences and the concept most commonly used to relate image contrast to differences in magnetic resonance tissue properties. It is generally used in a qualitative sense with the single tissue property thought to be most responsible for th...

journal_title：Journal of computer assisted tomography

authors： Yokoo T,Bae WC,Hamilton G,Karimi A,Borgstede JP,Bowen BC,Sirlin CB,Chung CB,Crues JV,Bradley WG,Bydder GM

更新日期：2010-05-01 00:00:00

abstract：:An unusual computed tomography finding, the "target sign," is demonstrated in a patient with a corpus callosum tumor mass extending to the right lateral ventricle. The central low attenuation of the "target" is produced by the isolated part of the dilated lateral ventricle surrounded by tumor tissue, the dense area of...

journal_title：Journal of computer assisted tomography

authors： El Gammal T,McDaniel FE

更新日期：1979-08-01 00:00:00

abstract：:A method for the production of thin axial transverse sections, coronal views, and sagittal views from overlapped thick computed tomography (CT) scans has been developed. Thin slices are produced by spatially filtering the overlapped CT data using a filter that is a combination of square waves in the spatial domain. Re...

journal_title：Journal of computer assisted tomography

authors： Correia JA,Davis KR,Kharasch M,Chesler DA,Taveras JM

更新日期：1980-02-01 00:00:00

abstract：:A test method with use of a biologic phantom--a deep-frozen specimen of a human cadaver--was developed in an attempt to simulate the clinical setting in CT of the spine. The quality of both soft tissue and bone images in the absence of motion artifacts was evaluated for seven scanner models. Special attention was paid...

journal_title：Journal of computer assisted tomography

authors： Moström U,Bergström K,Pech P,Ytterbergh C

更新日期：1986-11-01 00:00:00

abstract：OBJECTIVE:To assess the degree of extra scanning beyond the prescribed anatomic boundaries for thoracic and body computed tomographic (CT) scans and to identify associated factors. METHODS:For 442 consecutive chest, abdomen, and/or pelvis CT examinations, the length of extra scanning beyond the prescribed anatomic bou...

journal_title：Journal of computer assisted tomography

authors： Liao EA,Quint LE,Goodsitt MM,Francis IR,Khalatbari S,Myles JD

更新日期：2011-01-01 00:00:00

abstract：:Magnetic susceptibility variations due to the presence of iron in neural tissue can result in a shift of local resonance frequency, decreased T2 resulting from water diffusion through local field gradients, and line broadening due to field inhomogeneity within a voxel. In this study, modified spin echo phase contrast ...

journal_title：Journal of computer assisted tomography

authors： Wismer GL,Buxton RB,Rosen BR,Fisel CR,Oot RF,Brady TJ,Davis KR

更新日期：1988-03-01 00:00:00

abstract：PURPOSE:The purpose of this study was to determine whether liver extracellular volume (ECV) measured using equilibrium computed tomography (EQ-CT) can be used to quantitatively assess doxorubicin-induced liver injury (DILI). METHODS:The ethical approval was obtained from the Institutional Animal Care and Use Committee...

journal_title：Journal of computer assisted tomography

authors： Han P,Zhou Z,Wang R,Wang H,Sun Z,Wang X,Xu L

更新日期：2020-03-01 00:00:00

abstract：PURPOSE:The graphical approach is widely used for the pixelwise determination of local metabolic rate of glucose from dynamic positron emission tomography (PET) data. In its conventional implementation, measured integrals over time frames are used to approximate instantaneous tracer concentrations at midframe times ("m...

journal_title：Journal of computer assisted tomography

authors： Buchert R,van den Hoff J,Mester J

更新日期：2003-07-01 00:00:00

abstract：:A technique is described that permits the 19F nuclear magnetic resonance (NMR) imaging of the vascular system in animals that have been infused with certain perfluorocarbon blood substitutes. The essence of the technique is the selection for imaging of a narrow group of spectral lines from the fluorocarbon using a com...

journal_title：Journal of computer assisted tomography

authors： Joseph PM,Fishman JE,Mukherji B,Sloviter HA

更新日期：1985-11-01 00:00:00

abstract：:This is a comparison of the ability of two quantitative magnetic resonance (MR) indices: (a) the second echo signal drop (SESD) (a simplified index of T2 relaxation times that we have developed); and (b) the previously described lesion/liver signal intensity ratio (LLR) to provide histologic diagnosis in hepatic lesio...

journal_title：Journal of computer assisted tomography

authors： Mirowitz SA,Lee JK,Heiken JP

更新日期：1990-03-01 00:00:00

abstract：:Abdominal CT, which routinely includes the lower thorax, is an important adjunct to supine chest radiography in detecting chest injury in patients with blunt abdominal trauma. In 1,086 consecutive patients with blunt abdominal trauma, 223 of whom had both supine chest radiography and abdominal CT, 49 patients examined...

journal_title：Journal of computer assisted tomography

authors： Wolfman NT,Gilpin JW,Bechtold RE,Meredith JW,Ditesheim JA

更新日期：1993-01-01 00:00:00