BREATH-HOLD GADOLINIUM-ENHANCED MR-ANGIOGRAPHY OF THE ABDOMINAL-AORTA AND ITS MAJOR BRANCHES
BREATH-HOLD GADOLINIUM-ENHANCED MR-ANGIOGRAPHY OF THE ABDOMINAL-AORTA AND ITS MAJOR BRANCHES
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DOI：
10.1148/radiology.197.3.7480757
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发表时间：
1995-12-01
期刊：
影响因子：
19.7
通讯作者：
CHO, KJ
中科院分区：
文献类型：
--
作者：
PRINCE, MR;NARASIMHAM, DL;CHO, KJ
目得：为了开发和评估屏气三维钆增强磁共振（MR）血管造影术的腹aortic.MATERIALS和METHODS：在63例患者，腹主动脉及其分支成像29，43，或58秒屏气序列。在输注42 mL钆螯合物期间，在1.5 T下使用快速扰相梯度回波序列。19例患者与常规血管造影进行了相关性分析。比较屏气和自由呼吸（104例患者）的MR图像质量（信号与“总”噪声比[S/N*]）。结果：屏气钆增强MR血管造影，19例患者中有15例对肾动脉、腹腔动脉和上级肠系膜动脉闭塞性疾病进行了适当分级，11例副肾动脉中有10例被正确显示。在屏气图像上，95个肾脏中有86个显示了肾动脉分支，而在自由呼吸时，236个肾脏中只有84个显示了肾动脉分支（P <0.001）。屏气时远端肾动脉S/N* 为3.1，自由呼吸时为2.1（P <0.001）。结论：屏气可显著改善肾动脉、腹腔动脉和上级肠系膜动脉的三维钆增强MR血管造影。
PURPOSE: To develop and evaluate a sequence for breath-hold three-dimensional gadolinium-enhanced magnetic resonance (MR) angiography of the abdominal aorta.MATERIALS AND METHODS: In 63 patients, the abdominal aorta and its branches were imaged for 29, 43, or 58 seconds with breath holding. A fast spoiled gradient-echo sequence was used at 1.5 T during infusion of 42 mL of a gadolinium chelate. Correlation with conventional angiography was performed in 19 patients. MR image quality (signal-to-''total'' noise ratio [S/N*]) with breath holding was compared with that with free breathing (104 patients).RESULTS: With breath-hold gadolinium-enhanced MR angiography, renal, celiac, and superior mesenteric artery occlusive disease was graded appropriately in 15 of 19 patients, and 10 of 11 accessory renal arteries were depicted correctly. Renal artery branches were visualized in 86 of 95 kidneys on breath-hold images compared with only 84 of 236 kidneys with free breathing (P < .001). Distal renal artery S/N* was 3.1 with breath holding and 2.1 with free breathing (P < .001).CONCLUSION: Breath holding statistically significantly improves three-dimensional gadolinium-enhanced MR angiography of the renal, celiac, and superior mesenteric arteries.