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Free-breathing black-blood CINE fast-spin echo imaging for measuring abdominal aortic wall distensibility: a feasibility study.

Accepted version
Peer-reviewed

Type

Article

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Authors

Lin, Jyh-Miin 
Patterson, Andrew J 
Chao, Tzu-Cheng 
Zhu, Chengcheng 
Chang, Hing-Chiu 

Abstract

The paper reports a free-breathing black-blood CINE fast-spin echo (FSE) technique for measuring abdominal aortic wall motion. The free-breathing CINE FSE includes the following MR techniques: (1) variable-density sampling with fast iterative reconstruction; (2) inner-volume imaging; and (3) a blood-suppression preparation pulse. The proposed technique was evaluated in eight healthy subjects. The inner-volume imaging significantly reduced the intraluminal artifacts of respiratory motion (p  =  0.015). The quantitative measurements were a diameter of 16.3  ±  2.8 mm and wall distensibility of 2.0  ±  0.4 mm (12.5  ±  3.4%) and 0.7  ±  0.3 mm (4.1  ±  1.0%) for the anterior and posterior walls, respectively. The cyclic cross-sectional distensibility was 35  ±  15% greater in the systolic phase than in the diastolic phase. In conclusion, we developed a feasible CINE FSE method to measure the motion of the abdominal aortic wall, which will enable clinical scientists to study the elasticity of the abdominal aorta.

Description

Keywords

Adult, Aorta, Abdominal, Artifacts, Feasibility Studies, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Movement, Respiration

Journal Title

Phys Med Biol

Conference Name

Journal ISSN

0031-9155
1361-6560

Volume Title

62

Publisher

IOP Publishing