Improvements in carotid plaque imaging using a new eight-element phased array coil at 3T.
Improvements in carotid plaque imaging using a new eight-element phased array coil at 3T.
复制标题
DOI:
10.1002/jmri.21890
复制
发表时间:
2009-11
影响因子:
4.4
通讯作者:
Hayes, Cecil
中科院分区:
文献类型:
--
作者:
Balu, Niranjan;Yarnykh, Vasily L.;Scholnick, Joshua;Chu, Baocheng;Yuan, Chun;Hayes, Cecil
关键词:
To design and compare an eight-channel phased array (PA) coil for carotid imaging to an established four-channel PA design at 3T. An eight-channel PA (8PA) coil was designed specifically for imaging the carotid bifurcation and compared with the existing four-channel (4PA) design using a phantom and by in vivo black-blood magnetic resonance imaging (MRI). The 8PA and 4PA were compared in terms of coverage, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR). The 8PA showed up to 1.7-fold improvement in SNR at a depth of 3.5 cm and greater longitudinal coverage at a given SNR on a phantom. The 8PA showed improved vessel wall SNR for high spatial resolution (0.63 mm2) PD, T1, and T2 (1.7, 1.7, 1.6 times, respectively; P ≤ 0.002) and improved CNR (1.7, 1.6, 1.5 times, respectively; P ≤ 0.002). Ultrahigh-resolution (0.27 mm2) T1-weighted images showed better SNR and CNR (1.4 times, P ≤ 0.0001) on 8PA compared to 4PA. Carotid imaging studies may benefit from the improved SNR and larger coverage provided by use of the 8PA.
登录
查看更多内容
影响因子:
8.3
作者:
Altaf, Nishath;MacSweeney, Shane T.;Auer, Dorothee P.
通讯作者:
Auer, Dorothee P.
影响因子:
8.3
作者:
Fisher, M;Paganini-Hill, A;Norris, J
通讯作者:
Norris, J
影响因子:
8.3
作者:
Takaya, N;Yuan, C;Hatsukami, TS
通讯作者:
Hatsukami, TS
影响因子:
4.4
作者:
Crowe, LA;Gatehouse, P;Firmin, DN
通讯作者:
Firmin, DN
DOI:
10.1016/s1078-5884(04)00219-9
发表时间:
2004-08-01
影响因子:
5.7
作者:
Trivedi, RA;U-King-Im, J;Gillard, JH
通讯作者:
Gillard, JH