| Japanese |
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| Title | 123I-IMP脳血流SPECTのModified Bull's Eye表示による半定量的評価法 |
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| Subtitle | 原著 |
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| Authors | 水村直*, 汲田伸一郎*, 大石卓爾*, 隈崎達夫* |
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| Authors(kana) | |
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| Organization | *日本医科大学放射線科 |
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| Journal | 核医学 |
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| Volume | 30 |
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| Number | 3 |
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| Page | 283-293 |
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| Year/Month | 1993/3 |
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| Article | 原著 |
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| Publisher | 日本核医学会 |
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| Abstract | 「要旨」 123I-IMP脳血流SPECT多断層面を一画像上に集約するためのModified Bull's Eye(MBE)表示法を開発した. 同表示法では個体間を比較するためにSPECT水平断層像の長軸短軸比を変え大脳半球を円形に近似する. この円形に近似した断層像にCircumferential Profile Analysis(CPA)を施行し, このCPAから極座標表示(Bull's Eye表示)を行った. このとき血流欠損の重症度評価の指標としてSeverity Scoreを心筋SPECTと同様に算出した. 次いで5断層像を抽出し各断層面を12分割, 各領域の欠損の程度を視覚的にスコア化し(0-3点), その総和をSeverity Pointとした. Severity ScoreとSeverity Pointを臨床症例29例と健常男性6例について比較検討したところ相関係数0.86(p<0.001)と良好な相関を認めた. MBE表示はSPECT多断層像を一画面に集約するため読影は容易になり, また心筋Bull's Eye作成とほぼ同等の時間にて処理可能であるため, 臨床的に有用な表示法であると思われた. |
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| Practice | 臨床医学：一般 |
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| Keywords | 123I-IMP, Cerebral blood flow SPECT, Bull's eye display, Circumferential profile analysis |
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| English |
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| Title | Semi-Quantitative Evaluation of Cerebral Blood Flow with Modified Bull's Eye Display Using 123I-IMP SPECT |
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| Subtitle | Original Articles |
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| Authors | Sunao MIZUMURA*, Shin-ichiro KUMITA*, Takuji OISHI*, Tatsuo KUMAZAKI* |
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| Authors(kana) | |
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| Organization | *Department of Radiology, Nippon Medical School |
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| Journal | The Japanese Journal of nuclear medicine |
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| Volume | 30 |
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| Number | 3 |
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| Page | 283-293 |
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| Year/Month | 1993/3 |
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| Article | Original article |
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| Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
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| Abstract | We developed Modified Bull's Eye (MBE) display to demonstrate 123I-IMP SPECT images on a single map. To compare the difference of some SPECT images, we changed the ratio of the occipitofrontal diameter to the temporal diameter of oblique SPECT images and transformed the oblique images to round-shaped images. After circumferential profile analysis (CPA) was performed on the round-shaped oblique images, the data were mapped into a polar representation (MBE display). The severity score, as the index of severity of the perfusion defect, was calculated in the same way as the myocardial SPECT. We selected five slices from the round-shaped SPECT images and divided each slice into 12 areas. The severity of the perfusion defect was scored (0-3 points) visually, and the total score was defined as the "severity points". We compared the severity score with the severity points for 29 patients and six normal male volunteers. The correlation coefficient of the severity score and the severity points was 0.86 (p<0.001). The MBE display makes it easy to evaluate SPECT images because it is represented on a single map, and it takes no more time to construct than the myocardial bull's eye display. It should be useful display. |
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| Practice | Clinical medicine |
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| Keywords | 123I-IMP, Cerebral blood flow SPECT, Bull's eye display, Circumferential profile analysis |
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