| 任占丽,贺太平,张喜荣,贾永军,段海峰,于勇,于楠.对比自由呼吸Star-VIBE序列与呼吸末屏气C-VIBE序列胸部MR图像质量[J].中国医学影像技术,2020,36(11):1709~1713 |
| 对比自由呼吸Star-VIBE序列与呼吸末屏气C-VIBE序列胸部MR图像质量 |
| Comparison on chest MR image quality using free-breathing Star-VIBE and breath-hold C-VIBE sequences |
| 投稿时间：2019-09-15 修订日期：2020-10-27 |
| DOI：10.13929/j.issn.1003-3289.2020.11.028 |
| 中文关键词: 胸部 磁共振成像 质量控制 |
| 英文关键词:thorax magnetic resonance imaging quality control |
| 基金项目:国家自然科学基金（81701691）、陕西中医药大学学科创新团队建设项目（2019-QN09）、陕西中医药大学学科创新团队建设项目（2019-YS04）。 |
| 作者 | 单位 | E-mail | | 任占丽 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000
陕西中医药大学第二附属医院医学影像科, 陕西 咸阳 712000 | | | 贺太平 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000
陕西中医药大学医学技术学院, 陕西 咸阳 712000 | | | 张喜荣 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000
陕西中医药大学医学技术学院, 陕西 咸阳 712000 | | | 贾永军 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000 | | | 段海峰 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000 | | | 于勇 | 陕西中医药大学附属医院医学影像科, 陕西 咸阳 712000 | | | 于楠 | 陕西中医药大学医学技术学院, 陕西 咸阳 712000 | 349863320@qq.com |
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| 中文摘要: |
| 目的 比较分析以自由呼吸Star-VIBE序列与呼吸末屏气C-VIBE序列采及胸部MRI的图像质量。方法 对20例患者行胸部MR检查，采集呼气末屏气C-VIBE（C-VIBE）和自由呼吸Star-VIBE（Star-VIBE）序列图像。于肺动脉干水平分别测量升主动脉、肺动脉干、降主动脉的信号强度（SI）和标准差（SD），计算图像信噪比（SNR）和SI变异系数（CV）。对图像质量进行主观评分。比较2个序列图像的SNR、CV及主观评分差异。结果 Star-VIBE图像升主动脉、肺动脉干及降主动脉SNR值均高于C-VIBE（t=－4.87、－3.38、－9.42，P均<0.05），而SI CV均低于C-VIBE图像（t=5.52、3.67、8.04，P均<0.05）。Star-VIBE图像的主观评分高于C-VIBE图像（Z=－3.74，P<0.05）。结论 自由呼吸Star-VIBE序列胸部MRI的图像质量优于呼气末屏气C-VIBE序列。 |
| 英文摘要: |
| Objective To compare the image quality of chest MRI collected with free-breathing radial stack-of-stars volume interpolated breath-hold examination (Star-VIBE) sequence and conventional volume interpolated breath-hold examination sequence (C-VIBE) at the end of breath. Methods Twenty patients who underwent chest MR examination were prospectively collected, and the images were obtained with breath-hold C-VIBE sequence (C-VIBE) and free-breathing Star-VIBE sequence (Star-VIBE), respectively. The signal intensity (SI) and standard deviation (SD) of ascending aorta, main pulmonary artery and descending aorta were measured at the level of main pulmonary artery. Then signal-to-noise ratio (SNR) of images and coefficient of variation (CV) of SI were calculated. The image quality was subjectively scored. SNR, CV and subjective scores of the images were compared between 2 sequence. Results The image SNR of ascending aorta, main pulmonary artery and descending aorta of Star-VIBE sequence were higher than those of C-VIBE sequence (t=－4.87, －3.38, －9.42, all P<0.05), while the CV of SI with Star-VIBE sequence were lower than those of C-VIBE sequence (t=5.52, 3.67, 8.04, all P<0.05). The subjective scores of Star-VIBE sequence were significantly higher than those of C-VIBE sequence (Z=－3.74,P<0.05). Conclusion Using free breathing Star-VIBE sequence, the image quality of chest MRI was better than that with C-VIBE sequence at the end of breath. |
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