| Project/Area Number |
08671047
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Radiation science
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| Research Institution | Saitama Medical School |
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Principal Investigator |
AMANUMA Makoto Saitama Medical School, Dept of Radiol, Lecture, 医学部, 講師 (10212565)
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| Co-Investigator(Kenkyū-buntansha) |
HESHIKI Atsuko Saitama Medical School, Dept of Radiol, Professor, 医学部, 教授 (60008589)
WATABE Tsuneya Saitama Medical School, Dept of Radiol, Asistant Professor, 医学部, 助教授 (50056313)
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| Project Period (FY) |
1996 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
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| Keywords | magnetic resonance imeging / magnetic resonance angiography / contrast medium / arteriosclerosis obliterance / artery / aneurysm / 3 dimensional imaging |
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| Research Abstract |
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).
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