Correction of phase offset errors in main pulmonary artery flow quantification
نویسندگان
چکیده
منابع مشابه
Surgical correction of coarctation of the main pulmonary artery.
ADVANCES in heart surgery. catheterization, and angiography have called attention to constrictions of the pulmonary arterv and its branehes. Recenitlv SchumLacker and liurie' described a calcified stenotic zonie at the bifureation of the pulmlolnary arterv in a 14-vear-old girl. This was dilated with a Kelly clamiip. No postoperative physiologie studies were reported. Soiidergaard2 reported 3 c...
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We analyzed the flow velocity pattern in the main pulmonary artery after Fontan operation in patients with tricuspid atresia (n = 10) or with single ventricle (n = 10) by means of a catheter-mounted velocity probe. The area underneath the velocity signal of the forward flow was integrated, and ratios of the portions during atrial systole and during the diastolic phase to the total area (Fa and ...
متن کاملCorrection of phase offset errors in cardiovascular magnetic resonance using background subtraction from stationary tissue
Introduction Phase offset errors from local eddy currents can lead to significant errors in flow assessment on clinical cardiovascular magnetic resonance (CMR) examinations. Phantom correction for phase contrast (PC) errors appears to improve accuracy in flow assessment, but requires additional time and is not free from technical limitations. Background subtraction using a region of stationary ...
متن کاملLeft Main Pulmonary Artery
CONGENITAL ABSENCE of a main pulmonary artery branch is now a wellrecognized clinical entity, more than 60 cases having been reported in the literature. Diagnosis has heretofore been based primarily oln radiologic findings' in both routine x-rays and angiocardiography. Physiologic studies of pulmonary function, including differential bronchospirometry, however, provide valuable diagnostic infor...
متن کاملMain pulmonary artery aneurysm.
Pulmonary artery aneurysm is a rare lesion of the thoracic cavity. Different etiologies have been reviewed, but idiopathic lesions without other symptoms are seldom reported. Usually, surgical interventions are suggested, but the long-term outcomes are not well established. Here, we report a 24-year-old man with main pulmonary artery aneurysm who successfully underwent aneurysmectomy and polyte...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2005
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.20361