| Project/Area Number |
25461837
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Radiation science
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| Research Institution | Ibaraki Prefectural University of Health Science |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
SHIOMI Susumu 大阪市立大学, 大学院医学研究科, 教授 (30170848)
KAWABE Joji 大阪市立大学, 大学院医学研究科, 准教授 (60295706)
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| Research Collaborator |
YAMANAGA Takashi
YONEYAMA Hiroto
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | sentinel lymph node / SPECT / 散乱補正 / 減弱補正 / 空間分解能補正 / センチネルリンパ節 |
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| Outline of Final Research Achievements |
Multilayered phantom was developed which can be used to study the effect of image correction and standardization of imaging protocols for sentinel lymph nodes scintigraphy and evaluated various effect of imaging parameter and correction.
Contrast is improved by scatter correction. However, since one cannot rule out the possibility of false-negatives in the low-count range, it could not be determined whether scatter correction should be recommended.Attenuation correction, although the contrast does not change, the count is increased. Therefore, we recommend attenuation correction.Contrast was higher with spatial resolution correction than without correction for sentinel lymph nodes. The effect was particularly large in the visualization of low-uptake sentinel lymph nodes. However, with increasing update time, false positives were occurred on image.
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