BACKGROUND The accuracy of multidetector computed tomographic (CT) angiography involving 64 detectors has not been well established. METHODS We conducted a multicenter study to examine the accuracy of 64-row, 0.5-mm multidetector CT angiography as compared with conventional coronary angiography in patients with suspected coronary artery disease. Nine centers enrolled patients who underwent ca...

This study was conducted on a human anthropomorphic phantom to investigate the effective dose and entrance skin dose (ESD) in selected radiosensitive organs through invasive and computed tomography (CT) coronary angiography procedures using different dose-saving techniques. The effective dose was calculated as 2.49, 3.35 and 9.62 mSv, respectively, corresponding to three coronary CT angiography...

PURPOSE To describe the radiographic appearance of the interpositional carotid saphenous vein graft and to compare the efficacy of MR angiography with conventional angiography in determining graft patency and identifying graft irregularities. METHODS The authors examined saphenous vein graft bypasses of the cavernous carotid artery in 14 patients using CT, MR, and conventional and MR angiogra...

PURPOSE To determine the most cost-effective strategy for preoperative imaging performed in potential living renal donors. MATERIALS AND METHODS In a decision-analytic model, the societal cost-effectiveness of digital subtraction angiography (DSA), gadolinium-enhanced magnetic resonance (MR) angiography, contrast material-enhanced spiral computed tomographic (CT) angiography, and combinations...

BACKGROUND AND PURPOSE We hypothesize that the nearly doubling of signal-to-noise ratio at 3.0 T compared with that at 1.5 T yields improved clinical MR angiograms and enables superior visualization of intracranial aneurysms. The goal of this study was to determine whether 3.0-T time-of-flight (TOF) MR angiography is superior to 1.5-T TOF MR angiography in the detection and characterization of ...

BACKGROUND AND PURPOSE To determine the accuracy of magnetic resonance angiography in assessing patients with cerebrovascular disease, we performed a study comparing the results of conventional cerebral angiography, duplex scanning, and magnetic resonance angiography. METHODS From 42 patients, a total of 25 carotid arteries were evaluated by all three techniques. The studies were independentl...