Contrast enhanced high resolutional magnetic resonance angiography of the pelvis and lower extremities

骨盆和下肢对比增强高分辨率磁共振血管造影

• 批准号: 08671047
• 负责人: AMANUMA Makoto
• 金额: $ 0.77万
• 依托单位: Saitama Medical School
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08671047/
• 关键词: magnetic resonance imeging; magnetic resonance angiography; contrast medium; arteriosclerosis obliterance; artery; aneurysm; 3 dimensional imaging

With combined use of zero-filled interpolation and test injection for optimum injection timing estimation, MR angiography (MRA) of the pelvis and lower extremity has become a feasible tool to provide high quality selective arterial images without overlapping venous structures even with bolus injection of contrast medium. By repeating this imaging technique, 3D-MRA with time resolution has become available. Such imaging method was also possible in rest of the body including neck, chest, and upper abdomen.One of the largest problems of the MRA in this area was to cover long segments of arterial system in cases of diffuse arterial disease such as arteriosclerosis obliterance. Introduction of moving-table system made it possible to image three to four areas sequentially under a single contrast injection. With 20 ml Gd-chelate clinically feasible images were obtained and this method was extremely useful for assessment of not only arteriosclerosis obliterance but also aneurysm or other various abnormalities of the pelvis and lower extremities. The early experiences as for arterial signal distribution and clinical effectiveness for abdominal aortic aneurysms were reported and published (reference 8,9).

骨盆和下肢的MR血管造影（MRA）结合使用零填充插值和测试注射来估计最佳注射时间，即使在大量注射造影剂的情况下，也可以提供高质量的选择性动脉图像，而不会重叠静脉结构。通过重复这种成像技术，具有时间分辨率的3D-MRA已经成为可能。这种成像方法也适用于身体的其他部位，包括颈部、胸部和上腹部。在这一领域，MRA最大的问题之一是在弥漫性动脉疾病（如动脉硬化闭塞）的情况下，无法覆盖动脉系统的长段。移动台系统的引入使得在一次造影剂注射下可以连续成像三到四个区域。用20 ml gd -螯合物获得临床可行的图像，该方法不仅对动脉硬化闭塞的评估非常有用，而且对骨盆和下肢的动脉瘤或其他各种异常也非常有用。关于腹主动脉瘤的动脉信号分布及临床疗效的早期经验已被报道和发表（文献8,9）。

项目成果

天沼 誠: "胸腹部の造影MRvenography" 日獨医報. 43・3. 393-402 (1998)

Makoto Amanuma：“胸部和腹部的对比磁共振静脉造影”日本医学杂志 43・3（1998）。

天沼誠: "胸腹部の造影 MR venography."日獨医報. 43. 393-402 (1998)

Makoto Amanuma：“胸部和腹部 MR 静脉造影”，43. 393-402 (1998)。

天沼 誠: "コントラスト・エンハンストMRAの特徴と問題点ー四肢領域を中心に" INNERVISION. 12・9. 129-134 (1997)

Makoto Amanuma：“对比度增强 MRA 的特征和问题 - 关注四肢区域”INNERVISION 12・9（1997）。

天沼誠: "腹部大動脈瘤に対するテーブル移動併用造影 MR angiography の有用性の検討"日本医学放射線医学会会誌.. 59. 760-764 (1999)

Makoto Amanuma：“检查对比增强 MR 血管造影与工作台移动对腹主动脉瘤的有效性”，日本医学放射学会杂志 59. 760-764 (1999)。

Makoto Amanuma, et al.: "Contrast-enhanced 3D MR venography of the chest and Abdomen"Japan-German radiology. 43 (3). 393-402 (1998)

Makoto Amanuma 等人：“胸部和腹部的对比增强 3D MR 静脉造影”日本-德国放射学。