Abstract:
RATIONALE AND OBJECTIVES:The objective is to assess the diagnostic accuracy and interobserver variability of multiphase 3D gadolinium-enhanced magnetic resonance angiography (3D-Gd-MRA) for assessment of abdominal and pelvic vascular disease. METHODS:In 41 patients from two different institutions multiphase 3D-Gd-MRA of the aorta and pelvis was performed using an identical scanning protocol. In a single breath-hold three to four consecutive phases were acquired. Stenoses in the renal arteries, and aorta and pelvic arteries were independently evaluated by three readers and compared with digital subtraction angiography. Interobserver variability was compared by means of a kappa statistic. RESULTS:Accuracy for stenosis grading consistently ranged between 80% and 90% for all three readers in all vessel segments studied. Good interobserver agreement was found with kappa values exceeding 0.75. Vessel segments with delayed fill-in could be reliably detected on the multiple successive MRA phases. Overall, MRA was rated slightly superior to Digital Subtraction Angiography in terms of interobserver variability, diagnostic confidence and image quality. CONCLUSIONS:Multiphase MRA is a highly robust technique with reproducible accuracy for different observers and different institutions. It can therefore be recommended for screening of atherosclerotic abdominal and pelvic disease.
journal_name
Invest Radioljournal_title
Investigative radiologyauthors
Schoenberg SO,Essig M,Hallscheidt P,Sharafuddin MJ,Stolpen AH,Knopp MV,Yuh WTdoi
10.1097/00004424-200201000-00005keywords:
subject
Has Abstractpub_date
2002-01-01 00:00:00pages
20-8issue
1eissn
0020-9996issn
1536-0210journal_volume
37pub_type
杂志文章,多中心研究abstract:RATIONALE AND OBJECTIVES:Bolus injection of iodinated contrast media has been observed to alter myocardial mechanical function, but the consequences on cellular metabolism are poorly documented. Modifications of metabolic parameters (intracellular pH as well as adenosine triphosphate [ATP], phosphocreatine, and inorgan...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199501000-00001
更新日期:1995-01-01 00:00:00
abstract:OBJECTIVES:The objective of this study was to evaluate the correlation between dynamic gadoxetic acid-enhanced magnetic resonance imaging parameters and specific uptake values (SUVs) derived from ¹⁸fluorodeoxyglucose (¹⁸F-FDG) and ⁶⁸Ga-DOTA-Tyr(3)-octreotate (⁶⁸Ga-DOTATATE) positron emission tomography/computed tomogra...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3182a4eb4a
更新日期:2014-01-01 00:00:00
abstract::Radiolabeled ioversol was injected intravenously into two male and two female beagle dogs (6.7 to 10.4 kg) at two dose levels each (0.2 and 1.0 g I/kg). Blood levels of radioactivity were monitored at 2, 5, 10, 20, 40, 60, 90, and 120 minutes and at one and two days. Urine and feces were collected in metabolism cages ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198906001-00005
更新日期:1989-06-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to perform phantom measurements to prove the feasibility of single-source dual-energy computed tomography (DECT) of the extremities using a volume scan mode. In addition, we, for the first time, wanted to determine which concentrations of monosodium urate (MSU) in gout and calcium p...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000099
更新日期:2015-04-01 00:00:00
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journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197705000-00009
更新日期:1977-05-01 00:00:00
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journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000218
更新日期:2016-03-01 00:00:00
abstract::Receiver operating characteristic (ROC) analysis has been used in a broad variety of medical imaging studies during the past 15 years, and its advantages over more traditional measures of diagnostic performance are now clearly established. But despite the essential simplicity of the approach, workers in the field ofte...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198903000-00012
更新日期:1989-03-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The authors evaluate the use of a new device for interventional creation of atrial septal defects (ASD) working with high-frequency alternating current in an in vitro study with porcine atria. METHODS:The device consists of a symmetrical cage of six superelastic monofile wires, including a mic...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199702000-00003
更新日期:1997-02-01 00:00:00
abstract::The effect of contrast media (CM) dilution on contrast enhancement was studied using CM representing four structurally different molecular types at osmolalities ranging from 135 to 1340 mosm/kg. Diatrizoate (ionic monomer), iopamidol (nonionic monomer), ioxaglate (ionic dimer), and iodecol (nonionic dimer) were each g...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198809001-00014
更新日期:1988-09-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to assess the value of in vivo T2 measurements to noninvasively quantify myocardial fibrosis in diabetic mice at 11.75 T. Diabetic cardiomyopathy is characterized by extracellular matrix alteration and microcirculation impairment. These conditions might provide electrical heterogeneit...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318243e062
更新日期:2012-05-01 00:00:00
abstract:OBJECTIVES:Imaging of the kidney using blood oxygen level dependent MR presents a major opportunity to examine differences in tissue oxygenation within the cortex and medulla applicable to human disease. We sought to define the differences between regions within kidneys and to optimize selection of regions of interest ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3181b4c1e8
更新日期:2009-09-01 00:00:00
abstract::Lymphangiograms of canine cardiac and pulmonary efferent mediastinal lymphatics were made by cannulation and injection of Ethiodol. Injections were made singly and serially. The mediastinal lymphatics and lymph nodes, which constitute the pathways of drainage of the heart and lungs, were delineated from the point of c...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-197901000-00012
更新日期:1979-01-01 00:00:00
abstract:OBJECTIVES:The safety of nonionic contrast agents with that of ionic iodinated contrast agents in children is compared. METHODS:A comprehensive literature search was conducted to identify all publications on the safety profile of nonionic contrast agents administered intravenously to children. This information was com...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:10.1097/00004424-199311001-00027
更新日期:1993-11-01 00:00:00
abstract::A new technique for the noninvasive measurement of an index of renal blood flow is described. The method utilizes ultrasound determined renal volume and radionuclide assessment of the mean transit time of a pertechnetate bolus through the kidneys. From this information a value for flow is calculated according to compa...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198307000-00009
更新日期:1983-07-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to validate quantitation of R2* and DeltaR2* measurements obtained with a 3-dimensional (3-D) multiple gradient-recalled echo (mGRE) sequence for evaluating intrarenal oxygenation in humans. MATERIALS AND METHODS:Validation was accomplished (1) by comparing R2* values with pre...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000187166.43871.fb
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVES:The purposes of this study were to evaluate the reference range of quantitative computed tomography (QCT) measures of lung attenuation and airway parameter measurements in healthy nonsmoking adults and to identify sources of variation in those measures and possible means to adjust for them. MATERIALS AND ME...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e318262292e
更新日期:2012-10-01 00:00:00
abstract::Arterial occlusion by direct-current transcatheter electrocoagulation (TCEC) has been developed experimentally and used successfully in clinical situations. The major shortcoming of the technique has been the lengthy time necessary for occlusion of larger arteries. In the present study we attempted to decrease the tim...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198203000-00011
更新日期:1982-03-01 00:00:00
abstract:PURPOSE:The aim of this study was to compare qualitative and quantitative image quality and geometric distortion of 4 magnetic resonance diffusion-weighted imaging (DWI) sequences of the prostate using comparable imaging parameters and similar acquisition times. METHODS AND MATERIALS:Axial T2-weighted turbo spin echo ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000429
更新日期:2018-04-01 00:00:00
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journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/01.rli.0000197980.89673.4b
更新日期:2006-04-01 00:00:00
abstract:RATIONAL AND OBJECTIVES:The purpose of this study was to evaluate the effects of variation in design parameters on the resultant radial force. We evaluated the influence of wire gauge, leg length, and number of bends on the radial force produced by z stents and compared these with radial forces produced by commercial s...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200109000-00004
更新日期:2001-09-01 00:00:00
abstract::Human gallstones were surgically placed into the gallbladders of 200 swine. Eight of these swine were used as a prospective series to verify that the placement and presence of human gallstones in their gallbladders caused no significant pathologic changes in the gallbladder and that the gallstones were not spontaneous...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198902000-00005
更新日期:1989-02-01 00:00:00
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journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000028
更新日期:2014-06-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To evaluate the efficacy of oral administration of cilostazol, an antithrombotic agent, for the prevention of thrombotic occlusion and intimal hyperplasia after stenting. METHODS:Single-bodied Z-stents were placed in the iliac arteries of 23 dogs. Before stenting, an embolizing coil was introd...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199509000-00004
更新日期:1995-09-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:A computerized system that applies the case-based approach to training radiologists to diagnose brain tumors was designed. The authors attempted to provide residents a tool that supports their visual memory and inducts case-based reasoning. METHODS:A relational database with a digital image li...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199404000-00020
更新日期:1994-04-01 00:00:00
abstract::Recent experimental data underlies the role of hypoxic tubular injury in the pathophysiology of radiocontrast nephropathy. Although systemic transient hypoxemia, increased blood viscosity, and a leftward shift of the oxygen-hemoglobin dissociation curve may all contribute to intrarenal hypoxia, imbalance between oxyge...
journal_title:Investigative radiology
pub_type: 杂志文章,评审
doi:10.1097/00004424-199911000-00004
更新日期:1999-11-01 00:00:00
abstract::The magnitude and time course of contrast enhancement in spontaneous canine brain tumors was determined for two contrast agents: meglumine iothalamate and sodium meglumine ioxaglate. Tumor enhancement during contrast infusion and at 5, 10, 15, 30 and 45 minutes was measured using quantitative computed tomography. Bloo...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-198411001-00007
更新日期:1984-11-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:The vascular opacification characteristics of a new nonionic, dimeric contrast agent, iodixanol, have been compared with a nonionic, monomeric agent, iohexol, using ultrafast computed tomography (UFCT). METHODS:In 10 experiments with mongrel dogs, the contrast agents were alternately injected ...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-199212000-00011
更新日期:1992-12-01 00:00:00
abstract:RATIONALE AND OBJECTIVES:To compare the visibility and localization of extratemporal cortical lesions in extratemporal epilepsy by using curved reconstruction (CR) and three-dimensional surface rendering (3D SR) of 3D-acquired MR images and to study the degree of confidence with which localizations are made, particular...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/00004424-200104000-00005
更新日期:2001-04-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to conduct a radiopathologic evaluation of right-angled traction bronchiectasis to differentiate idiopathic pulmonary fibrosis (IPF) without honeycombing from idiopathic nonspecific interstitial pneumonia (NSIP). MATERIALS AND METHODS:The derivation cohort included 78 consecutive p...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0000000000000651
更新日期:2020-06-01 00:00:00
abstract:OBJECTIVES:Volumetric magnetic resonance (MR)-guided high-intensity focused ultrasound (HIFU) is a completely noninvasive image-guided thermal ablation technique. Recently, there has been growing interest in the use of MR-HIFU for noninvasive ablation of malignant tumors. Of particular interest for noninvasive ablation...
journal_title:Investigative radiology
pub_type: 杂志文章
doi:10.1097/RLI.0b013e3182820257
更新日期:2013-06-01 00:00:00