| 李章柱,殷亮,商明艳,王振松,于丹,甘洁.对比5.0T与3.0T时间飞越法MRA图像质量及其所示脉络膜前动脉[J].中国医学影像技术,2024,40(5):653~656 |
| 对比5.0T与3.0T时间飞越法MRA图像质量及其所示脉络膜前动脉 |
| Comparison on image quality of 5.0T and 3.0T time of flight MR angiography for displaying anterior choroidal arteries |
| 投稿时间：2023-12-19 修订日期：2024-05-12 |
| DOI：10.13929/j.issn.1003-3289.2024.05.004 |
| 中文关键词: 脉络膜前动脉 磁共振血管造影术 |
| 英文关键词:anterior choroidal artery magnetic resonance angiography |
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| 中文摘要: |
| 目的 比较5.0T与3.0T时间飞越法MR血管成像(TOF-MRA)图像质量及其所示脉络膜前动脉(AChA)。方法 回顾性收集接受头部5.0T TOF-MRA(5.0T组,n=40)或3.0T TOF-MRA(3.0T组,n=42)的80例患者(其中2例先后接受2种TOF-MRA),对图像质量进行主观评分及客观评价;将AChA均分为近、中及远段(A1、A2、A3段),记录2种TOF-MRA显示左、右侧AChA数量,并观察其所示左、右侧AChA长度及直径的差异。结果 5.0T组图像质量主观评分高于3.0T组[5.0(4.0,5.0) vs. 5.0(3.0,5.0), Z=6.417, P=0.029],且图像信噪比(91.01±5.04)及对比度噪声比(72.47±5.14)亦均高于3.0T组[(62.11±4.16) 、(48.92±4.62), t=28.339 、 19.681, P均＜0.001]。5.0T组共显示80段AChA-A1、80段AChA-A2及60段AChA-A3,3.0T组TOF-MRA共显示60段AChA-A1、36段AChA-A2及12段AChA-A3。5.0T组所示左、右侧AChA长度分别为(24.01±7.41)mm、(22.72±9.36)mm,左、右侧AChA直径分别为(1.16±0.12)mm、(1.19±0.14)mm,3.0T组长度分别为(18.35±8.67)mm、(16.80±6.94)mm,直径分别为(0.99±0.25)mm、(0.95±0.29)mm;5.0T组各值均大于3.0T组(t=3.242、3.183、4.595、3.846,P均＜0.001)。结论 相比3.0T TOF-MRA, 5.0T TOF-MRA图像质量更佳、显示AChA更为清晰,可为临床诊治AChA相关脑血管病提供依据。 |
| 英文摘要: |
| Objective To compare image quality of 5.0T and 3.0T time of flight MR angiography (TOF-MRA) and displaying choroidal anterior arteries (AChA). Methods Data of 80 patients who underwent head 5.0T (5.0T group, n=40) and/or 3.0T TOF-MRA (3.0T group, n=42) were retrospectively analyzed, among them 2 patients underwent both 5.0T and 3.0T TOF-MRA. The subjective scoring and objective evaluation of image quality were performed, and the results were compared between groups. AChA was divided into proximal, intermediate and distal segments (A1, A2, A3 segment), the quantity of left and right AChA shown on 5.0T and 3.0T TOF-MRA were recorded, and the length and diameter of left and right AChA dispalyed on MRA were comparatively observed. Results The subjective scores of image quality of 5.0T group were higher than that of 3.0T group (5.0 vs. 5.0 , Z=6.417, P=0.029). The signal-to-noise ratio (91.01±5.04) and contrast-to-noise ratio (72.47±5.14) of 5.0T group were both larger than those of 3.0T group ([62.11±4.16],[48.92±4.62], t=28.339, 19.681, both P＜0.001). There were 80 segments of AChA-A1, 80 of AChA-A2 and 60 segments of AChA-A3 displayed on 5.0T TOF-MRA, while 60 segments of AChA-A1, 36 of AChA-A2 and 12 segments of AChA-A3 displayed on 3.0T TOF-MRA, respectively. In 5.0T group, the length of the left and right AChA was (24.01±7.41)mm and (22.72±9.36)mm, with diameter of (1.16±0.12)mm and (1.19±0.14)mm, respectively, whereas in 3.0T group, the relative values were (18.35±8.67)mm, (16.80±6.94)mm, (0.99±0.25)mm and (0.95±0.29)mm, respectively, all in 5.0T group were greater than in 3.0T group (t=3.242, 3.183, 4.595, 3.846, all P＜0.001). Conclusion Compared with 3.0T TOF-MRA, 5.0T TOF-MRA of AChA might provide better image quality and clearer vessel depiction, being helpful to clinical diagnosis and treatment of ACHA-related cerebral vascular diseases. |
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