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The optical properties of a thrombus at wavelengths ranging from 600 to 750?nm were analyzed using a hyperspectral imaging (HSI) system. A specially designed hydrodynamically levitated centrifugal blood pump with a visible bottom area was used. In vitro antithrombogenic testing was conducted five times with the pump using bovine whole blood in which the activated blood clotting time was adjusted to 200?s prior to the experiment. Two halogen lights were used for the light sources. The forward scattering through the pump and backward scattering on the pump bottom area were imaged using the HSI system. HSI showed an increase in forward scattering at wavelengths ranging from 670 to 750?nm http://www.selleck.cn/products/PLX-4720.html in the location of thrombus formation. The time at which the thrombus began to form in the impeller rotating at 2780?rpm could be detected. The spectral difference between the whole blood and the thrombus was utilized to image thrombus formation. The results indicate the feasibility of dynamically detecting and imaging thrombus formation in a rotary blood pump. ""In order to define physiological properties of the autograft root, magnetic resonance imaging (MRI) findings relative to three different http://www.selleckchem.com/products/avelestat-azd9668.html operative techniques were compared with those of control subjects. Twenty-three patients, 18/5?M/F, aged 32?��?9?years, underwent MRI assessment of the aortic root. Patients with normally functioning autograft valve and at least 4?years of follow-up (average 5.6?��?1.9, range 4�C10?years) were selected for each technique: six subcoronary (Group 1), nine inclusion (Group 2), and eight freestanding root (Group 3). Results were compared among patient groups and with seven control subjects, 6/1?M/F, aged 30?��?2?years (P?=?ns). Morphological and functional properties were defined using transverse and paracoronal views, during systole and diastole. Mean aortic size in each group was greater than control, except for the LV-aortic junction and the sinus of Valsalva in Group 1 (26?��?5 vs. 23?��?3?mm, P?=?0.2 and 33?��?6 vs. 30?��?5?mm, P?=?0.3). Aortic valve plane rotation (P?=?0.02) and root dilatation (P?=?0.02) were more common in Group 3. Altered valve opening dynamics and asymmetrical aortic flow profile were also more common in Group 2 (P?=?0.03) and Group 3 (P?=?0.04). Distensibility was significantly http://www.selleckchem.com/products/a-1331852.html reduced at sinus level in Group 2 and 3 compared with control (4.1?��?3.5% and 3.6?��?4.4% vs. 9.0?��?4.7%, P?=?0.03). Asymmetrical aortic flow profile was more common in patients with aortic dilatation (P?=?0.05) and with severely reduced (