Both techniques were compared for degree of visual and quantitative measurement of carotid stenosis. Delineation of vessel lumen and overall diagnostic confidence were significantly better with CE-MRA, respectively 3.4?��?0.5 and 3.3?��?0.6 (mean score?��?SD), than with k-t BLAST MRA, respectively 2.8?��?0.4 and 2.9?��?0.5 (P?<?0.02). SNR and CNR were significantly higher for k-t BLAST MRA, respectively 33.5?��?19.3 and 27.9?��?19.3, than for CE-MRA, respectively 25.7?��?10 and 20.4?��?8.4 (P?<?0.03). Intertechnique agreement was good for carotid stenosis characterization (��?=?.763). For the 14 relevant stenosis, stenosis measurements were highly <a href="http://www.selleck.cn/products/MS-275.html
">MS-275 correlated between techniques (0.96; P?<?0.0001). The Bland-Altman plot showed a low bias in assessment of the degree of stenosis (mean bias 2.1%?��?7.7). k-t BLAST MRA using a nondedicated coil offering and dynamic information was a effective diagnostic tool for detection and characterization of carotid stenosis.J. Magn. Reson. Imaging 2014;40:1056�C1063. ? 2013 Wiley Periodicals, Inc. ""To demonstrate the feasibility of delayed gadolinium-enhanced magnetic resonance imaging (MRI) of cartilage (dGEMRIC) in the ankle at 3 T and to obtain preliminary data on matrix associated autologous chondrocyte (MACI) repair tissue. A 3D dual flip angle sequence was used with an eight-channel multipurpose coil at 3 T to obtain T1 maps both pre- and postintravenous contrast agent (Magnevist, <a href="http://www.selleckchem.com/products/Y-27632.html
0.2 mM/kg). Postcontrast T1 over time was evaluated in three volunteers; a modified dGEMRIC protocol was then used to assess 10 cases after MACI in the ankle. Forty-five minutes were found sufficient for maximum T1 decrease. MACI cases had a precontrast mean T1 of 1050 �� 148.4 msec in reference cartilage (RC) and 1080 �� 165.6 msec in repair tissue (RT). Postcontrast T1 decreased to 590 �� 134.0 msec in RC and 554 �� 133.0 msec in RT. There was no significant difference between the delta relaxation rates in RT (9.44 �� 10?4 s?1) and RC (8.04 �� 10?4 s?1, P = 0.487). The mean relative delta relaxation rate was 1.34 �� 0.83. It is feasible to assess the thin cartilage layers of the ankle with dGEMRIC at 3 T; MACI can yield RT with properties similar to articular cartilage. J. Magn. Reson. Imaging 2010;31:732�C739. ? 2010 Wiley-Liss, Inc. ""To evaluate the suitability of a 12- or 32-channel head coil and of a prescan normalization filter for functional magnetic resonance imaging (fMRI) studies at different brain regions. fMRI was obtained from 36 volunteers executing a visually instructed motor paradigm using a 12-channel head matrix coil and a 32-channel phased-array head coil with and without prescan normalization filtering at 3 T.