Non-contrast coronary artery wall and plaque imaging using inversion-recovery prepared steady-state free precession

BMC Medical Imaging

Masaru Ishihara¹  Momoe Kawakami¹  Tosiaki Miyati²  Yasuyo Taniguchi³  Takeshi Ishimoto² 

[1] Department of Radiology, Hyogo Brain and Heart Center, 520, Saisho-ko, Himeji 670-0981, Hyogo, Japan;Division of Health Sciences, Graduate School of Medical Science, Kanazawa University, 5-11-80, Kodatsuno, Kanazawa 920-0942, Japan;Department of Cardiology, Hyogo Brain and Heart Center, 520, Saisho-ko, Himeji 670-0981, Hyogo, Japan

关键词: Inversion recovery;    SSFP;    MRI;    Plaque;    Coronary;   

Others  :  1220819
DOI  :  10.1186/s12880-015-0071-2

 received in 2014-08-07, accepted in 2015-07-10,  发布年份 2015

【 摘 要 】

Background

The objective of this study was to investigate whether three-dimensional (3D) single inversion-recovery prepared steady-state free precession (IR-SSFP) could characterize the coronary artery wall.

Methods

IR-SSFP was scanned on a 1.5-T MR scanner with a five element cardiac coil. One hundred and twenty-one subjects with known or suspected coronary artery disease who had undergone X-ray coronary angiography (XCA) underwent coronary artery wall imaging using IR-SSFP sequences. In each coronary segment, the detection of the coronary wall was categorized, and contrast (signal of plaque minus signal of blood in the aorta divided by the signal of plaque plus signal of blood in the aorta) was calculated.

Results

422 of 517 segments (82 %) were successfully visualized, and the detection scores tended to be higher at the proximal coronary artery when compared with other segments of the coronary artery. High contrast (contrast ≥ 0.75) areas were observed in 62 of 218 segments with ≥50 % coronary artery stenosis by XCA but also in 25 of 299 segments without ≥50 % coronary stenosis.

Conclusions

IR-SSFP provided good visualization of the coronary wall. This approach represents a promising noninvasive strategy for the assessment of the coronary artery wall.

【 授权许可】

   
2015 Ishimoto et al.

【 图 表 】

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