Abstract:
OBJECTIVES:Our aim was to evaluate the diagnostic accuracy of 256-slice, high-pitch mode multidetector computed tomography (MDCT) for coronary artery bypass graft (CABG) patency. METHODS:Eighty-eight patients underwent 256-slice MDCT angiography to evaluate their graft patency after CABG surgery using a prospectively synchronized electrocardiogram in the high-pitch spiral acquisition mode. Effective radiation doses were calculated. We investigated the diagnostic accuracy of high-pitch, low-dose, prospective, electrocardiogram-triggering, dual-source MDCT for CABG patency compared with catheter coronary angiography imaging findings. RESULTS:A total of 215 grafts and 645 vessel segments were analyzed. All graft segments had diagnostic image quality. The proximal and middle graft segments had significantly (P < 0.05) better mean image quality scores (1.18 ± 0.4) than the distal segments (1.31 ± 0.5). Using catheter coronary angiography as the reference standard, high-pitch MDCT had the following sensitivity, specificity, positive predictive value, and negative predictive value of per-segment analysis for detecting graft patency: 97.1%, 99.6%, 94.4%, and 99.8%, respectively. CONCLUSIONS:In conclusion, MDCT can be used noninvasively with a lower radiation dose for the assessment of restenosis in CABG patients.
journal_name
J Comput Assist Tomogrjournal_title
Journal of computer assisted tomographyauthors
Yuceler Z,Kantarci M,Yuce I,Kizrak Y,Bayraktutan U,Ogul H,Kiris A,Celik O,Pirimoglu B,Genc B,Gundogdu Fdoi
10.1097/RCT.0b013e3182a58a8csubject
Has Abstractpub_date
2014-01-01 00:00:00pages
61-6issue
1eissn
0363-8715issn
1532-3145journal_volume
38pub_type
杂志文章abstract::Aneurysms arising from the extracranial carotid arteries are uncommon lesions. Clinically, they may present as lateral masses in the superior cervical area, as medial masses in the tonsillar fossa or parapharyngeal region, or as a mass palpable in both areas. Tenderness or pain may or may not be present. Pulsation is ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1986-05-01 00:00:00
abstract::The magnetic resonance appearance of three lesions of focal nodular hyperplasia observed in two patients is reviewed. All three lesions demonstrated isointensity with the liver on the short repetition time (TR) and echo time (TE) spin echo images. One lesion also showed a central area of low signal intensity that path...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198707000-00019
更新日期:1987-07-01 00:00:00
abstract::Gadolinium-phthalein complexone (Gd-PC) was developed as a hepatobiliary magnetic resonance (MR) contrast agent. Phthalein complexone is one of the iminodiacetic acid derivatives and a structural analogue of bromosulfophthalein. Gadolinium-PC substantially enhanced signal intensity of normal functioning livers on T1-w...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198901000-00014
更新日期:1989-01-01 00:00:00
abstract:INTRODUCTION:Patients with type II navicular ossicles have traditionally been considered to be symptomatic, whereas patients with type I and III bones are considered asymptomatic without additional relevant imaging findings. The main objective of this study is to investigate the association of type I os naviculare with...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000001089
更新日期:2020-11-01 00:00:00
abstract:OBJECTIVE:The goal of this study was twofold: first, to quantify the influence of magnetic field strength (B0) on T2* and T2susceptibility relaxation rates in vertebral bone marrow; and second, to determine the significance of in-phase/out-of-phase phenomena in GE MRI as a function of TEs at different B0 values. MATER...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199505000-00023
更新日期:1995-05-01 00:00:00
abstract:OBJECTIVE:This study aimed to assess the utility of dural thickening of the internal auditory canal (IAC) in patients with spontaneous intracranial hypotension (SIH) syndrome and determined the sensitivity and specificity of this image finding. METHODS:Magnetic resonance images were evaluated for 22 cases of definite ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000342
更新日期:2016-03-01 00:00:00
abstract:PURPOSE:The purpose of this study was to compare quantitative and qualitative measures of aortic, cardiac, and respiratory motion artifact between high-pitch dual-source (DS) and single-source (SS) computed tomography pulmonary angiography (CTPA) protocols. METHODS:This institutional review board-approved, Health Insu...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000736
更新日期:2018-07-01 00:00:00
abstract::We evaluated the feasibility of angiographic computed tomography (ACT) for diagnostic imaging in a patient with degenerative lumbar spine disease. ACT provides a volume data set out of a rotational acquisition with a c-arm-mounted flat-panel detector. Using this technique, radiographic myelography and myelographic com...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/01.rct.0000228152.73528.54
更新日期:2006-09-01 00:00:00
abstract::Coronary artery disease is currently the largest killer in the western world, and is estimated to become the leading cause of death worldwide by the year 2020. The question therefore is whether magnetic resonance imaging currently has a place in the already extremely well equipped armamentarium of cardiac testing. Alt...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,评审
doi:10.1097/00004728-199911001-00019
更新日期:1999-11-01 00:00:00
abstract::The typical CT findings of Lhermitte-Duclos disease (dysplastic gangliocytoma of the cerebellum) are a hypodense nonenhancing unilateral posterior fossa mass, with or without adjacent occipital thinning, hydrocephalus, and calcification. Magnetic resonance (MR) has been found to be very helpful, and superior to CT, in...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199011000-00022
更新日期:1990-11-01 00:00:00
abstract::We report imaging findings in five patients who had sudden cardiac arrest during contrast-enhanced computed tomography (CT). We observed strikingly dense abdominal veins, variable degrees of arterial enhancement, and poor abdominal visceral enhancement. Comparison with a control group of 30 patients revealed a statist...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200301000-00017
更新日期:2003-01-01 00:00:00
abstract::Renal pseudotumors may be intrinsic or extrinsic to the renal parenchyma. A case in which an ectopic position of the pancreatic tail simulated a solid left renal mass on nephrotomography and ultrasonography is presented. Computed tomography was important in confirming the etiology of the mass. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198308000-00030
更新日期:1983-08-01 00:00:00
abstract::Six patients with solid vestibular schwannomas were studied by diffusion magnetic resonance imaging to assess if this modality adds new information for these tumors, because there is no previous report in the relevant literature. The sizes of the tumors ranged from 2.2 to 4.7 cm with respect to their largest diameters...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-200303000-00024
更新日期:2003-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to develop and validate a novel noise insertion method that can accurately simulate lower-dose images from existing standard-dose computed tomography (CT) data. METHODS:The noise insertion method incorporates the effects of the bowtie filter, automatic exposure control, and el...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e318258e891
更新日期:2012-07-01 00:00:00
abstract:PURPOSE:To assess radiation dose reduction and image quality for weight-based chest computed tomographic (CT) examination results reconstructed using adaptive statistical iterative reconstruction (ASIR) technique. MATERIALS AND METHODS:With local ethical committee approval, weight-adjusted chest CT examinations were p...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181b26c67
更新日期:2010-01-01 00:00:00
abstract::In vivo attenuation values of 19 fluid collections in 17 patients were compared with in vitro values obtained on examination of the aspirated fluids within the calibration phantom of an EMI CT5005 body scanner. While the in vitro values showed a 5.2 Hounsfield unit (HU:1,000 scale). difference between cysts and absces...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198004000-00002
更新日期:1980-04-01 00:00:00
abstract:PURPOSE:The purpose of this study was to investigate the noninvasive quantification of coronary artery stenosis using cardiac software packages and vessel phantoms with known stenosis severity. MATERIALS AND METHODS:Four different sizes of vessel phantoms were filled with contrast agent and scanned on a 64-slice multi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3181888363
更新日期:2009-07-01 00:00:00
abstract::Elevation of the anterior part of the right diaphragm results in the spurious radiological appearance of a mass at the right lung base. Standard chest views are usually sufficient to show the true nature of the "mass." Occasionally, however, a true mass lesion cannot be entirely excluded, and further studies are then ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198110000-00023
更新日期:1981-10-01 00:00:00
abstract::The value of the angio-computed tomography technique for evaluating communication between cardiac cavities of the two hearts in conjoined twins is reported. After injecting contrast medium into the peripheral vein of one of the twins, the increase in density values of the heart in the other twin suggested shunting bet...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198108000-00023
更新日期:1981-08-01 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
pub_type: 杂志文章
doi:10.1097/00004728-198611000-00023
更新日期:1986-11-01 00:00:00
abstract:OBJECTIVE:This study aimed to assess how meniscus damage and baseline cartilage thickness influence the rate of cartilage loss and knee pain. METHODS:Of 4796 participants in the Osteoarthritis Initiative, 86 had baseline and 48-month follow-up quantitative magnetic resonance imaging data for medial compartment cartila...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章,多中心研究
doi:10.1097/RCT.0000000000000464
更新日期:2016-11-01 00:00:00
abstract::The computed tomographic findings in seven boys and two girls with infarction of the internal capsule are reported. Ages at the time of examination ranged from 8 months to 14 years. The etiology was head injury (concussion) in six and unknown in three. Cerebral angiography carried out in four cases showed narrowing of...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198012000-00007
更新日期:1980-12-01 00:00:00
abstract::A psoas mass in a patient with a history of penetrating trauma to the area was demonstrated by computed tomography (CT) to represent a lumbar artery pseudoaneurysm surrounded by hematoma. This report emphasizes the importance of recognizing the anatomic position of the lumbar arteries on CT images and considering the ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198406000-00044
更新日期:1984-06-01 00:00:00
abstract:OBJECTIVE:To perform a clinical and payer-based analysis of the value of dual-energy computed tomography (DECT) for workup of incidental abdominal findings. METHODS:This was a single-center, retrospectively designed, Health Insurance Portability and Accountability Act-compliant study approved by our institutional revi...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000886
更新日期:2019-07-01 00:00:00
abstract:BACKGROUND:The Mount Fuji sign (MFS) is a radiological sign on computed tomographic scans depicting air between the frontal lobes. Air in this location indicates tension pneumocephalus (TP), considered a neurosurgical emergency.We evaluate the correlation between the MFS and perioperative mortality attributed to TP in ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0000000000000897
更新日期:2019-09-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to assess the feasibility of performing diagnostic-quality contrast-enhanced excretory magnetic resonance urography (eMRU) at 3T, examining both image quality and diagnostic accuracy for a range of urinary tract abnormalities. METHODS:The diuretic-enhanced 3T eMRUs of 37 patie...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/RCT.0b013e3182711fd9
更新日期:2013-01-01 00:00:00
abstract:OBJECTIVE:Our goal was to evaluate the role of Gd-enhanced MR in the diagnosis and surgical planning of intraventricular cysticercosis cysts. MATERIALS AND METHODS:Thirty-three patients with intraventricular cysticercosis were evaluated with Gd-enhanced MRI including follow-up studies ranging over time periods from 6 ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-199311000-00015
更新日期:1993-11-01 00:00:00
abstract::Small aortas were documented by CT in six patients, 16-34 years old. The diameter of these aortas measured at the level of 1 cm below the orifice of the superior mesenteric artery ranged from 10 to 12 mm, much smaller than the mean of 17 mm obtained from 20 subjects, 16-20 years old. Such small aortas are usually prod...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::Computed tomographic and magnetic resonance (MR) findings in a case of pseudomyxoma peritonei arising from a mucoid cystadenoma of the ovary are presented. The possible diagnostic aid of MR is discussed. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198511000-00025
更新日期:1985-11-01 00:00:00
abstract::A case of an unusually large cystic renal cell carcinoma demonstrated on plain film, CT, and magnetic resonance (MR) is presented. Though the origin of huge abdominal tumors can be difficult to determine, the CT and MR findings were able to correctly diagnose the mass as a malignant cystic kidney tumor. ...
journal_title:Journal of computer assisted tomography
pub_type: 杂志文章
doi:10.1097/00004728-198911000-00026
更新日期:1989-11-01 00:00:00