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Abstract #3926

Abdominal Aortic Aneurysm Causes Hemodynamic Abnormalities in the Iliac Arteries

Mamoru Takahashi1, Yasuo Takehara2, Haruo Isoda3, Naoki Ooishi2, Masaki Terada4, Tetsuya Wakayama5, Atsushi Nozaki5, Toshiyuki Shimizu6, Marcus Alley7, Naok

1Seirei Mikatahara General Hospital, Hamamatsu, Shizuoka, Japan; 2Hamamatsu University School of Medicine; 3Nagoya University School of Health Sciences; 4Iwata City Hosipital; 5GE Helthcare Japan; 6R's Tech Co; 7Stanford University School of Medicine

Low wall shear stress is known to cause atherosclerosis in the arterial wall. Hemodynamic patterns of the iliac arteries were assessed in two groups (i.e. dilated and undilated abdominal aorta) in terms of the patterns of streamlines and mean values of wall shear stress (WSS). As a result, abnormal flow dynamics such as vortex and/or turbulent flow occur in the abdominal aortic aneurysm (AAA) also affected the hemodynamics in the downstream iliac arteries, which reduced their WSSs.

Keywords

abdominal abnormalities abnormality accounting affect affected alley allows aneurysm aneurysms aorta aortic approved arterial arteries artery assess assessed atherosclerosis axial bifurcation blood cardiac causes chart city coll common conditions consent conspicuous contrast conversely coronary curvature cycle determined dilated dimensional disturbs downstream eight encoding enhanced entire especially even examinations excite exist existing explain extent females flow flows focal gadolinium general generated geometry health hospital human hypothesized iliac important in vivo included index induction informed initial initiated inner innovated interestingly internal irregularity isolated japan laminar lead locally location males matched matrix medicine mostly orthogonal oscillatory overall parry patient patients peculiar phenomenon play post postulated predominant presence prior processed progress prominent prone rare recently recruited reduce reduced reduces relatively resolved respectively role scanner school sciences shear significantly simplifying software stage stream streamlines stress suggest systolic tech thereby throughout turbulent ultimate ultimately vectors velocities velocity visually vortex wall whereas whether whose written years