Japanese |
Title | 123I - IMPによるFractional Uptake法の改良 |
Subtitle | 技術報告 |
Authors | 宮崎吉春*, 橋本正明**, 絹谷清剛***, 佐竹良三****, 井上寿*, 塩崎潤*, 瀧本政盛*, 伊藤廣*, 利波紀久*** |
Authors(kana) | |
Organization | *公立能登総合病院中央放射線部, **脳神経外科, ****神経内科, ***金沢大学医学部核医学科 |
Journal | 核医学 |
Volume | 33 |
Number | 3 |
Page | 285-291 |
Year/Month | 1996/3 |
Article | 報告 |
Publisher | 日本核医学会 |
Abstract | 「要旨」123I-IMPを使用した非侵襲的脳血流量測定法であるFractional Uptake(FU)法の改良を試みた. 体表面積からの推定される心拍出量(CO)を用いた従来のFU法に変えて, 投与薬剤の放射能量に対する心初回循環放射能量からCOを推定する方法を用いた. また, 肺と脳の放射能データを小視野ガンマカメラにより分割収集した. 24例において, 99mTc-HMPAOを用いたPatlak plot法による平均脳血流量(mCBF)との関係を検討した結果, この方法で算出したmCBFは(r=0.833, p<0.001), 従来法の推定CO値から算出するmCBFよりも(r=0.667, p<0.01)良好な相関関係を示した. この変法により, FU法の精度改善が得られると同時に, より多施設での応用が可能になるものと考えられる. 「I. はじめに」脳血流シンチ製剤として使用されているN-isopropyl-p-[123I]-iodoamphetamine(123I-IMP)は, 脳への初回循環での摂取率が高いため, 投与後5分位まではマイクロスフェアモデルを応用した脳血流量の算出が可能であるとされる. |
Practice | 臨床医学:一般 |
Keywords | 123I-IMP, Cerebral blood flow, Fractional uptake, Cardiac output index. |
English |
Title | Modifications of Fractional Uptake Method for 123I - IMP |
Subtitle | Technical Reports |
Authors | Yoshiharu MIYAZAKI*, Masaaki HASHIMOTO**, Seigo KINUYA***, Ryozo SATAKE****, Hisashi INOUE*, Jun SHIOZAKI*, Masamori TAKIMOTO*, Hiroshi ITo*, Norihisa TONAMI*** |
Authors(kana) | |
Organization | *Section of Nuclear Medicine, **Section of Neurosurgery, ***Section of Neurology, Noto General Hospital, ***Department of Nuclear Medicine, Kanazawa University School of Medicine |
Journal | The Japanese Journal of nuclear medicine |
Volume | 33 |
Number | 3 |
Page | 285-291 |
Year/Month | 1996/3 |
Article | Report |
Publisher | THE JAPANESE SOCIETY OF NUCLEAR MEDICINE |
Abstract | [Summary]We intended to improve the fractional uptake(FU)method which was developed to quantify cerebral blood flow using 123I-IMP without blood sampling. The quantification of cardiac output(CO)using firstpass data was adapted to FU method while the original FU method used CO which was estimated from the body surface area of patients. Time-radioactivity curves of the lungs and brain were separately obtained by a small-field-of-view gamma camera. In 24 cases, mean cerebral blood flow(mCBF)obtained by the modified FU method showed the better correlation(r=0.833, p<0.001)to mCBF measured by the Patlak plot with 99mTc-HMPAO than the original FU method(r=0.667, p<0.01). With these modifications, the reliability of FU method could be improved and the modified FU method might be performed in the other institutions. |
Practice | Clinical medicine |
Keywords | 123I-IMP, Cerebral blood flow, Fractional uptake, Cardiac output index. |