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OBJECTIVES In this prospective evaluation we investigated the accuracy of 64-slice computed tomography angiography (CTA) in an unselected but symptomatic patient population for detection of stenoses in bypass grafts when compared with invasive angiography. BACKGROUND The assessment of significant stenosis in bypass grafts is important for patients with(More)
Two patients with severe cerebral symptoms of toxemia of pregnancy were examined using computed tomography (CT) and angiography. CT disclosed extensive areas of low attenuation within the cerebral hemispheres. Angiography revealed constriction and narrowing of proximal and peripheral vessels suggesting vasculitis with extensive areas of impaired regional(More)
The exposure to ionizing radiation has raised concerns about coronary CT angiography (CCTA). Recently, prospective ECG-triggered sequential scan technique has been introduced in CCTA to significantly reduce radiation exposure. The purpose of this study was to analyze our experience with the sequential scan technique on a dual-source CT system with respect(More)
OBJECTIVE Sternal dehiscence after median sternotomy can be a challenging problem in case of multiple fractures or infection. The use of titanium plates is a promising approach for sternal reconstruction. METHODS Titanium plate fixation was used in 15 patients (67+/-5.9 years, 171+/-8.2 cm, 93.6+/-14.9 kg, body mass index 32+/-5 kg/m(2)) with unstable(More)
OBJECTIVES We compared the annulus diameters measured by transthoracic echocardiography (TTE), transesophageal echocardiography (TEE), and dual-source computed tomography (DSCT) before transcatheter aortic valve implantation (TAVI). BACKGROUND In TAVI correct evaluation of the aortic annulus is mandatory to choose the correct prosthesis type and size and(More)
In an hypothesis-generating case-control study of amyotrophic lateral sclerosis, lifetime occupational histories were obtained. The patients (n = 28) were clinic based. The occupational exposure of interest in this report is electromagnetic fields (EMFs). This is the first and so far the only exposure analyzed in this study. Occupational exposure up to 2(More)
Careful attention to technique is essential for the accurate evaluation of peripheral nerve function using conventional EMG and nerve conduction studies. Numerous technical, anatomic, and physiologic pitfalls must be avoided. The amplitudes of the M wave and SNAP contain useful diagnostic information and should be evaluated carefully in addition to(More)
T1 and T2 relaxation times of agar phantoms containing L-dopa melanin and Fe3+ were measured under MRI conditions. Fe3+ shortened T1 and T2 relaxation times. Melanin influenced relaxation times only in the presence of Fe3+; thus, contrast in MR images of the basal ganglia may depend upon levels of both paramagnetic iron and neuromelanin.
We successfully implanted a bioprosthetic aortic valve via the right subclavian artery within the framework of the CoreValve transapical aortic valve replacement (TAVR) ReValving (CoreValve, Irvine, CA, USA) clinical trial on November 20, 2007, at the Clinic for Cardiovascular Surgery at the German Heart Center Munich, Technical University Munich. The(More)