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• Clinical Article •
Comparison of three dimensional Fast Time-of-flight and standard time-of-flight MR angiography in intracranial arteries
FENG Fei  ZHAO Wu-yi  LI Zhong-hua  DAI Yi  ZHU Yi  DENG Ling-bo  ZOU Li-qiu 

DOI:10.3969/j.issn.1674-8034.2015.06.005.


[Abstract] Objective: To investigate the value of 3D Fast-TOF MRA in intracranial arteries.Materials and Methods: 3D Fast-TOF and 3D standard TOF sequences were performed in 31 patients. MIP images of intracranial arteries were reconstructed. The image quality (including artifacts), carotid artery branches were compared between the two groups. Signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of the source images of both groups were compared.Results: The acquisition time of 3D Fast-TOF group and 3D standard TOF group were 3.31 min and 5.28 min. The image score of carotid artery branches in 3D Fast-TOF group and 3D standard TOF group was 3.21±0.86 and 2.51±0.64 respectively. Significant statistical difference was existed (P<0.01). Demonstration of the carotid artery branches on 3D Fast-TOF group was superior to that of 3D standard TOF group. The image quality scores of the 3D Fast-TOF group and 3D standard TOF group were 4.84±0.58, 4.87±0.56. SNR of 3D Fast-TOF MRA group and 3D Standard TOF group was 161.17, 3D Fast-TOF MRA group; CNR was 124.13±11.28,113.04±29.90. No statistical difference of image quality, SNR and CNR was existed between these tow groups (P>0.05).Conclusion: We demonstrated that 3D Fast-TOF group is a new intracranial MRA technique which could shorten acquisition time, and preserve good imaging quality and high spatial resolution.
[Keywords] Magnetic resonance imaging；Magnetic resonance angiography；3D fast time of flight；Intracranial arterial diseases

FENG Fei Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

ZHAO Wu-yi Siemens Shenzhen Magnetic resonance Ltd, Shenzhen 518057, China

LI Zhong-hua Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

DAI Yi Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

ZHU Yi Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

DENG Ling-bo Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

ZOU Li-qiu* Department of medical imaging, Peking University Shenzhen Hospital, Shenzhen 518036, China

*Correspondence to: Zou LQ, E-mail: baszzlq@163.com

Conflicts of interest   None.

Received  2015-04-03
Accepted  2015-05-05
DOI: 10.3969/j.issn.1674-8034.2015.06.005
DOI:10.3969/j.issn.1674-8034.2015.06.005.

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