Abstract:
PURPOSE:To evaluate and compare findings for thoracic aortic disease with three black-blood magnetic resonance (MR) pulse sequences: half-Fourier rapid acquisition with relaxation enhancement (RARE), with and without electrocardiographic (ECG) triggering, and ECG-triggered turbo spin echo (SE). MATERIALS AND METHODS:Axial black-blood MR images of the chest acquired at 1.5 T with a phased-array coil were obtained in 38 consecutive patients referred for evaluation of thoracic aortic disease. ECG-triggered and nontriggered half-Fourier RARE images were compared with T1-weighted ECG-triggered turbo SE images. Two readers independently scored images for each of the following parameters: ghosting artifacts; clarity of the mediastinum, cardiac chambers, and aortic wall; conspicuity of abnormality; intraluminal signal void uniformity; and overall image quality. RESULTS:Both half-Fourier RARE sequences outperformed the turbo SE sequence for all measured parameters. Scores for the ECG-triggered half-Fourier RARE sequence were significantly (P < .05) higher than those for the nontriggered version for clarity of the mediastinum and aortic wall, conspicuity of any abnormality other than aortic dissection, and overall image quality. Mean acquisition times for the ECG-triggered (48 seconds) and nontriggered (30 seconds) sequences were significantly shorter than that for the turbo SE sequence (2 minutes 20 seconds). CONCLUSION:Rapid black-blood half-Fourier RARE sequences, with or without ECG triggering, can replace ECG-triggered turbo SE sequences for evaluation of thoracic aortic disease.
journal_name
Radiologyjournal_title
Radiologyauthors
Stemerman DH,Krinsky GA,Lee VS,Johnson G,Yang BM,Rofsky NMdoi
10.1148/radiology.213.1.r99oc48185subject
Has Abstractpub_date
1999-10-01 00:00:00pages
185-91issue
1eissn
0033-8419issn
1527-1315journal_volume
213pub_type
杂志文章相关文献
RADIOLOGY文献大全abstract::Magnetic resonance imaging techniques were applied to in vivo spectroscopic analysis of spatially resolved phosphorus spectra in the cat brain to determine whether changes associated with stroke could be detected. Two-dimensional images of separate phosphorus-containing compounds, as well as spectra arising from spati...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.153.3.6494470
更新日期:1984-12-01 00:00:00
abstract::Thirty-seven patients with 18 primary advanced or persistent, 16 local recurrent, and three local metastatic tumors of the head and neck were treated with a combination of interstitial low-dose iridium-192 radiation therapy and interstitial 915-MHz microwave hyperthermia supplemented by external radiation therapy. Twe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.176.1.2353100
更新日期:1990-07-01 00:00:00
abstract::Depiction of small-bowel pathologic conditions was optimized with use of a negative luminal contrast agent, spectral fat suppression, and gadolinium enhancement in an excised gut phantom. The method was applied in nine patients in conjunction with standard enteroclysis examinations. Bulk susceptibility effects of oral...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.205.1.9315000
更新日期:1997-10-01 00:00:00
abstract:PURPOSE:To evaluate the performance of a low-b-value diffusion-weighted (DW) echo-planar (EP) imaging sequence for detection of regional and diffuse myocardial edema in patients with acute myocarditis. MATERIALS AND METHODS:This study was approved by the institutional review board, and informed consent was obtained fr...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13121811
更新日期:2013-11-01 00:00:00
abstract:PURPOSE:To assess the safety and effectiveness of percutaneous radiofrequency (RF) ablation of subcapsular liver tumors. MATERIALS AND METHODS:The study protocol was approved by the institutional review board, and all patients gave written informed consent. One hundred eighty-one patients (79 men, 102 women; age range...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2482071690
更新日期:2008-08-01 00:00:00
abstract::Background Modern high-spatial-resolution radiologic methods enable increasingly detailed volumetric postmortem investigations of human neuroanatomy for diagnostic, research, and educational purposes. Purpose To evaluate the viability of postmortem x-ray phase-contrast micro-CT to provide tissue-conserving, high-spati...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2020201622
更新日期:2021-01-01 00:00:00
abstract:PURPOSE:To investigate the utility of diffusion-weighted (DW) imaging in distinguishing bland thrombus from neoplastic thrombus in the portal vein in patients with hepatocellular carcinoma (HCC). MATERIALS AND METHODS:In this retrospective institutional review board-approved HIPAA-complaint study, the imaging results ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.09090304
更新日期:2010-01-01 00:00:00
abstract:PURPOSE:To assess the effect of commonly used computed tomographic (CT) section thicknesses on metastatic tumor measurements calculated with unidimensional, bidimensional, area, and volumetric methods. MATERIALS AND METHODS:Analysis and data collection were approved by the Institutional Review Board, with waived infor...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2343040020
更新日期:2005-03-01 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
pub_type: 杂志文章
doi:10.1148/radiol.2281020489
更新日期:2003-07-01 00:00:00
abstract:PURPOSE:To retrospectively determine the value of adding qualitative and quantitative axial diffusion-weighted (DW) imaging to standard spine magnetic resonance (MR) imaging to differentiate between acute osteoporotic and malignant compression fractures at 3.0 T. MATERIALS AND METHODS:The institutional ethics committe...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.13130399
更新日期:2014-05-01 00:00:00
abstract:PURPOSE:To compare the performance of pelvic phased-array (PPA) coils and integrated endorectal PPA coils in evaluation of local extent of prostate cancer. MATERIALS AND METHODS:Seventy-one men underwent magnetic resonance (MR) imaging within 3 weeks of radical prostatectomy. MR findings of tumor, extracapsular extens...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiology.193.3.7972810
更新日期:1994-12-01 00:00:00
abstract:PURPOSE:To determine whether perfusion-weighted and proton spectroscopic MR imaging can be used to differentiate high-grade primary gliomas and solitary metastases on the basis of differences in vascularity and metabolite levels in the peritumoral region. MATERIALS AND METHODS:Fifty-one patients with a solitary brain ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.2223010558
更新日期:2002-03-01 00:00:00
abstract:PURPOSE:To determine the proportion of children and young adults in whom the thymus extends superiorly above the level of the manubrium into the anterior cervical tissues on magnetic resonance (MR) imaging studies. MATERIALS AND METHODS:This retrospective study was approved by the institutional review board, and writt...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10091792
更新日期:2010-07-01 00:00:00
abstract::High-resolution magnetic resonance (MR) images of the skin were acquired with a whole-body MR system at 1.5 T by adding a specific imaging module: A saddle-shaped surface gradient coil was connected in place of one of the gradient coils of the system, and a surface radio-frequency coil with a 1.5-cm radius was placed ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.176.2.2367660
更新日期:1990-08-01 00:00:00
abstract:PURPOSE:To compare conventional and Doppler ultrasound (US) with clinical and biopsy parameters used to assess disease activity and outcome in lupus nephritis and to assess the predictive value of US. MATERIALS AND METHODS:Thirty-four patients with lupus nephritis prospectively underwent laboratory and US analysis at ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.203.1.9122420
更新日期:1997-04-01 00:00:00
abstract:PURPOSE:To investigate blood perfusion of nonfractured, normal-appearing vertebral bodies with regard to age and sex. MATERIALS AND METHODS:Dynamic magnetic resonance imaging (160 images obtained in 80 seconds) was performed from T10 to L5 in 66 patients. Patients were assigned to three groups: group 1, those 50 years...
journal_title:Radiology
pub_type: 临床试验,杂志文章
doi:10.1148/radiology.220.1.r01jl32213
更新日期:2001-07-01 00:00:00
abstract::Eleven cases of superior mesenteric artery embolization are presented. The extent of bowel necrosis was found to be related to two major factors: the site of occlusion and the elapsed time between the onset of symptoms and definitive therapy. Angiography, available on an emergency basis, provides a definitive diagnosi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/124.3.625
更新日期:1977-09-01 00:00:00
abstract::During a 5-year period, 11 children were identified as having traumatic atlanto-occipital dislocation injury on the basis of clinical and radiographic findings. Radiographic criteria including the distance between the tip of the dens and the basion (DB distance), the BC/OA ratio (ratio of the distance between the basi...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.188.1.8511290
更新日期:1993-07-01 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
pub_type: 杂志文章
doi:10.1148/radiol.2015150733
更新日期:2016-02-01 00:00:00
abstract:PURPOSE:To compare unenhanced helical computed tomography (CT) and endoscopic retrograde cholangiopancreatography (ERCP) in the detection of common bile duct calculi. MATERIALS AND METHODS:Within 13 months, 51 patients (aged 18-94 years) with clinically suspected choledocholithiasis underwent unenhanced helical CT imm...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.203.3.9169700
更新日期:1997-06-01 00:00:00
abstract:PURPOSE:To assess cardiac morphologic and functional adaptations in elite triathletes with magnetic resonance (MR) imaging and to compare findings to those in recreationally active control subjects. MATERIALS AND METHODS:The institutional review board approved the study, and written informed consent was obtained from ...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.10092377
更新日期:2010-10-01 00:00:00
abstract::The effect of 5-thio-D-glucose on the viability and radiosensitivity of P815-X2 mouse mastocytoma cells was studied in vitro. By itself, this compound is specifically cytotoxic toward hypoxic cells; moreover, it sensitizes hypoxic cells to irradiation while it protects aerobic cells from radiation damage. These featur...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/123.1.201
更新日期:1977-04-01 00:00:00
abstract:PURPOSE:To compare the subjective Likert score to the Prostate Imaging Reporting and Data System (PIRADS) and morphology-location-signal intensity (MLS) scores for categorization of prostate lesions as benign or malignant at multiparametric magnetic resonance (MR) imaging. MATERIALS AND METHODS:Two hundred fifteen pat...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiol.14131584
更新日期:2014-08-01 00:00:00
abstract::High-resolution, real-time sonography of the rotator cuff was performed in 51 shoulders, and the results were correlated with findings obtained during subsequent surgery. Prospective sensitivity of sonography in detection of a tear was 100%; specificity, 75%; and accuracy, 92%. Retrospective estimation of tear size on...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.169.3.3055040
更新日期:1988-12-01 00:00:00
abstract::Inferior vena cava filters were placed in 60 patients. Ultrasound (US) of the venous access site was performed before and 3-5 days after filter placement to determine the prevalence of occlusive and nonocclusive access-site thrombosis (AST). Prevalence of symptoms attributable to AST was also evaluated at 1-month clin...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.185.1.1523320
更新日期:1992-10-01 00:00:00
abstract::A nuclear magnetic resonance (NMR) imager with a 6.5-cm aperture is described. Spatial resolution is 0.47 X 2.0 mm with a slice thickness of 8.4 mm. Contrast resolution is 3% for a 4-minute image. Because of the excellent spatial resolution and high contrast between soft tissues, the images provide a great deal of det...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.136.3.7403550
更新日期:1980-09-01 00:00:00
abstract:PURPOSE:To investigate how changes in kilovolt peak and milliampere second settings, and patient weight affect transmitted x-ray energy fluence and the image contrast-to-noise ratio (CNR) at abdominal computed tomography (CT). MATERIALS AND METHODS:Cylinders of water were used as patient models, and x-ray spectra, inc...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.217.2.r00nv35430
更新日期:2000-11-01 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
pub_type: 杂志文章
doi:10.1148/radiology.147.3.6405450
更新日期:1983-06-01 00:00:00
abstract::The authors report a patient with angina pectoris in whom selective left coronary angiography demonstrated that the pulmonary artery branch to an apical lung segment was supplied by a bronchial collateral vessel which arose from the left circumflex artery. The anatomic and physiological developmental mechanisms, and t...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/126.1.25
更新日期:1978-01-01 00:00:00
abstract:PURPOSE:To assess replacement of barium enema examination with colonoscopy in relation to age- and sex-related risk factors, place of service, physician specialty, and cost. MATERIALS AND METHODS:Between 1985 and 1992, 894,777 insurance claims for barium enema examination and lower gastrointestinal endoscopy were retr...
journal_title:Radiology
pub_type: 杂志文章
doi:10.1148/radiology.195.3.7754010
更新日期:1995-06-01 00:00:00