Free-breathing Star volumetric interpolated breath-hold examination sequence for acquisition of chest T1WI
10.13929/j.issn.1003-3289.2020.06.030
- VernacularTitle: 自由呼吸StarVIBE序列用于采集胸部T1WI
- Author:
Wuchao LI
1
Author Information
1. Department of Radiology, Guizhou Provincial People's Hospital
- Publication Type:Journal Article
- Keywords:
Image quality;
Magnetic resonance imaging;
Thorax
- From:
Chinese Journal of Medical Imaging Technology
2020;36(6):923-927
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To explore the application value of free-breathing Star volumetric interpolated breath-hold examination (StarVIBE) sequence for acquisition of chest T1WI. Methods: Data of 37 patients with chest lesions detected with CT were collected. The patients were divided into unable-to-hold-breath group (n=17) and able-to-hold-breath group(n=20) according to whether they could hold breath for 20 s or not. Then all patients underwent plain and delayed phase enhanced StarVIBE sequence and conventional VIBE sequence MR examinations. Imaging qualities were evaluated using "5-point scale" in terms of lesion conspicuity, artifact, pulmonary vessels sharpness, mediastinal structures conspicuity and overall quality, and then were compared between sequences and groups, respectively. Results: In unable-to-hold-breath group, the scores of StarVIBE sequence were higher than those of conventional VIBE sequence on both plain and enhanced images (all P<0.05). In able-to-hold-breath group, plain images of StarVIBE sequence had lower scores of lesion conspicuity and pulmonary vessels sharpness than those of conventional VIBE sequence (both P<0.05), while there was no significant difference of the above scores on enhanced images (all P>0.05), and the scores of artifact and the overall image quality were not statistically different between two sequences (all P>0.05). However, in able-to-hold-breath group, StarVIBE sequence demonstrated higher score of pulmonary vessels sharpness on both plain and enhanced images (P<0.05). Conclusion: For acquisition of chest T1WI, using free-breathing StarVIBE sequence can achieve similar image quality to conventional VIBE sequence patients being able to breath-holding. For patients being unable to hold breath, relative good image quality could be obtained using free-breathing StarVIBE sequence.
