The importance of mechanical stresses and strains has become well recognized in vascular physiology and pathology. To compute the stress and strain on the various components of the vessel wall, we must know the constitutive equations for the different layers of the vessel wall. The objective of the present study is to determine the constitutive equation of the coronary artery treated as a two-l...

PURPOSE Recent association report of gadolinium contrast agents and Nephrogenic Systemic Fibrosis (NSF) diseases makes it increasing interests in using non-contrast MRA technique as an alternative [1]. Nonenhanced renal 3D MRA using time-spatial labeling inversion pulse (time-SLIP) with respiratory triggering has been optimized using the inflow technique in the axial acquisition [2,3]. However,...

To expand the search for central pulmonary arteries in six patients with absence of cardiac-pulmonary continuity, computerized axial tomography (CAT) of the chest was performed. The CAT scans were compared with previous arteriograms and pulmonary vein wedge angiograms. Three patients with type IV truncus arteriosus were studied, and none had a central, right or left pulmonary artery on CAT scan...

During embryonic life, events may alter the normal growth and fusion of the endocardial tube, the paired dorsal aortae, and the vitelline plexus, leading to anomalies and variants of the mature axial arterial system.1 Many of these are well known, especially those associated with the aorta, heart, and umbilical artery.1,2 Vitelline variants have also been found that are either associated with M...

We investigate oscillatory blood flow in an elastic artery and in the presence of stenosis, whose form is given analytically. The stenosis is a condition where an artery wall thickens as a result of fatty materials such as cholesterol. We consider the case of very low pulse frequency that can be the case for patients whose hearts beat too slowly, but with arbitrary value of the ratio γ of the a...

Neurology India | Nov-Dec 2009 | Vol 57 | Issue 6 Figure 2: Three dimensional computed tomography angiography images. (a) Superior view of the circle of Willis showing the anterior communicating artery aneurysm (arrow) on the planum sphenoidale. (b) Right supero-anterior view of the A1s-AComA-aneurysm complex (arrow) on the planum sphenoidale. Both A1s travel not tortuously. (c) Lengths of righ...

BACKGROUND During the planning of a thoracodorsal artery perforator (TDAP) free flap, preoperative multidetector-row computed tomographic (MDCT) angiography is valuable for predicting the locations of perforators. However, CT-based perforator mapping of the thoracodorsal artery is not easy because of its small diameter. Thus, we evaluated 1-mm-thick MDCT images in multiple planes to search for ...