Fast inversion recovery magnetic resonance angiography of the intracranial arteries.
Fast inversion recovery magnetic resonance angiography of the intracranial arteries.
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DOI：
10.1002/mrm.22456
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发表时间：
2010-06
影响因子：
3.3
通讯作者：
Riederer, Stephen J.
中科院分区：
文献类型：
--
作者：
Tan, Ek T.;Huston, John, III;Campeau, Norbert G.;Riederer, Stephen J.
关键词：
Inversion-prepared pulse sequences can be used for non-contrast magnetic resonance angiography (MRA), but suffer from long scan times when acquired using conventional non-accelerated techniques. This work proposes a subtraction-based spin-labeling, 3D fast inversion recovery magnetic resonance angiography (FIR-MRA) method for imaging the intracranial arteries. FIR-MRA uses alternating cycles of non-selective and slab-selective inversions, leading to dark-blood and bright-blood images, respectively. The signal difference between these images eliminates static background tissue and generates the angiogram. To reduce scan time, segmented fast gradient recalled echo readout and parallel imaging are applied. The inversion recovery with embedded self-calibration (IRES) method used allows for parallel acceleration at factors of two and above. An off-resonance selective inversion provides effective venous suppression with no detriment to the depiction of arteries. FIR-MRA was compared against conventional 3D time-of-flight (TOF) angiography at 3T in eight normal subjects. Results showed that FIR-MRA had superior vessel conspicuity in the distal vessels (P < 0.05), and equal or better vessel continuity and venous suppression. However, FIR-MRA had inferior vessel sharpness (P < 0.05) in four of nine vessel groups. The clinical utility of FIR-MRA was demonstrated in three MRA patients.
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影响因子：
3.3
作者：
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通讯作者：
BLATTER, DD
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