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WebThe hepatic artery (which is oxygen-rich) supplies the rest. Figure4 depicts cross sections of them, and gives an overview of one single lobule, the elemental system. In a normal patient, contrast injected from the upper extremity first opacifies the SVC, followed by the right atrium, right ventricle, pulmonary artery, pulmonary vein, left atrium, left ventricle, ascending aorta, and finally the descending thoracic aorta. Specific vascular lesions may occur in the hepatic artery, hepatic vein, or portal vein. Acute pancreatitis is inflammation that resolves both clinically and histologically. Glenn shunt is performed as the second stage of surgical repair and involves anastomosis between the SVC and the right pulmonary artery, which can either be unidirectional or bidirectional. To confront the theoretical approach developed in this paper to experimental data, we rely on anatomic results provided by two different groups19,22,29. AJR Am J Roentgenol 193(4):928940, Shuman WP, Branch KR, May JM, Mitsumori LM, Strote JN, Warren BH et al (2009) Whole-chest 64-MDCT of emergency department patients with nonspecific chest pain: Radiation dose and coronary artery image quality with prospective ECG triggering versus retrospective ECG gating. Furthermore, due to the absence of pumping action of right ventricle, there is passive laminar flow of Fontan circulation, which causes inhomogeneous enhancement, particularly within the conduit [28]. Selection of the wrong target vessel, especially in the setting of complex vascular anatomy, and/or selection of an ROI which is too big or too small are common operator dependent errors. This resulted in peak pressure reaching 300psi with resultant disarming and decreased flow rate of 2.8mL/s with suboptimal pulmonary artery enhancement. These patients are likely hemodynamically unstable at the time of presentation and may be on cardiopulmonary monitoring which should be evaluated by the attending radiologist. The hepatic artery originates from the common hepatic artery and divides into the right and left hepatic arteries. Wechsatol et al.26 showed that they happen because they are the most efficient way, i.e. It is caused most often by cirrhosis (in North America), schistosomiasis (in endemic areas), or hepatic vascular abnormalities. The hepatic artery waveform has a low-resistance profile with broad systolic peaks, gradual deceleration from systole to diastole, and well-maintained Size of the cannula used for delivery of contrast medium is important to achieve the desired flow rate for the duration of the injection [9]. This is consistent with the results provided by Siggers et al.40 whose finite elements modeling in 2D indicates a reduction in blood flow rate in a square lattice as opposed to a hexagonal one. Dynamic CTA, with the arm in neutral position and then in elevated positions (130 of hyperabduction with external rotation), can be used to evaluate TOS [17, 18]. J Thorac Imaging 22(2):125129, Ajlan AM, Binzaqr S, Jadkarim DA, Jamjoom LG, Leipsic J (2016) High-pitch Helical dual-source computed Tomographic pulmonary angiography: comparing image quality in inspiratory breath-hold and during free breathing.