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BACKGROUND AND AIMS In MR examinations of myocardial perfusion by the use of Snapshot-FLASH sequences it is of major importance that the achievable signal difference between pre- and normal postcontrast myocardium be maximized. METHODS In ECG-triggered Snapshot-FLASH sequences the signal intensity of the myocardium depends on the flip angle alpha, the(More)
PURPOSE To evaluate the combination of a platelet glycoprotein IIb/IIIa complex receptor inhibitor and urokinase for treatment of recent (<or=6 weeks) arterial occlusion of the legs. MATERIALS AND METHODS Seventy patients with lower extremity arterial occlusion of less than 6 weeks duration were randomly separated into two treatment groups: urokinase plus(More)
Thrombembolic complications frequently occur during and after endovascular procedures because of associated arterial injury and thrombotic characteristics of implanted devices such as stents. New strategies in platelet aggregation inhibition are now available blocking the final and common pathway of platelet aggregation, the glycoprotein IIb/IIIa receptor.(More)
PURPOSE To assess the feasibility and initial clinical results of Closer (Perclose, Redwood City, California), a new device for percutaneous suture-mediated closure of arterial puncture sites. METHODS Vascular interventions were performed using 6 and 7 French sheaths in 22 consecutive patients. All patients underwent suture-mediated percutaneous closure(More)
OBJECTIVE Six patients who had undergone minimally invasive direct coronary artery bypass surgery were examined to evaluate an MR imaging protocol that provided information about cardiac function, bypass graft patency, and flow characteristics with a single examination. CONCLUSION Preliminary results suggest that our imaging protocol allows accurate(More)
Paragangliomas of the glomus caroticum are relatively rare, but highly vascularized neoplasmas, which develop from chemoreceptors. They can be develop at any age, but most often in the third or fourth decade of life. Paragangliomas grow very slowly and are most always of benign origin. There is a familial predisposition, and an autosomal-dominant(More)
A case of extraventricular neurocytoma with spontaneous intratumoral hemorrhage is reported. A 47-year-old man presented with sudden left-sided hemiparesis. Magnetic resonance imaging revealed a right parietal subcortical mass with intratumoral hemorrhagic transformation and without contact to the ventricular system. After complete microsurgical removal,(More)
PURPOSE To evaluate LV functional parameters, graft flow and patency in patients with IMA grafts using a combined MR protocol with phase-contrast technique and contrast enhanced MR angiography. MATERIAL AND METHODS Using a 1.5 T MR system 27 patients with 27 left internal mammary artery (LIMA) and 41 venous grafts were examined before and 6 months after(More)
PURPOSE To evaluate the diagnostic value of multidetector CT angiography (MDCTA) of the renal arteries. METHODS 27 patients underwent MDCTA of the renal arteries. Scan parameters were: collimation 4 x 1 mm, pitch 1.5, effective slice thickness 1.25 mm, reconstruction increment 0.8 mm, circulation time measurement, power injection of 80 ml iomeprol 400,(More)