~(99)(Tc)~m-DTPA在细菌性脓肿中的浓聚和显像

  • 摘要: 将18.5MBq99Tcm-DTPA(二乙三胺五乙酸)经静脉注入股部荷细菌性脓肿的小鼠体内进行显像和生物分布检测。结果表明注药后短期内即可获显示脓肿灶的满意图像。生物分布检测表明脓肿内放射性在0.5、1、3、6、24h均明显高于对侧未致炎肌肉。脓肿/血液在1h后超过1,至24h升高到2.32±0.33,而肌肉中放射性水平在各时间均明显低于血液。肝/血液上升较缓,肾/血液上升迅速,24h高达21.07±2.47。因此认为99Tcm-DTPA是一种简单有效的较为理想的炎症显像剂。

     

    Abstract: ACCUMULATIONANDIMAGINGOF99Tcm┐DTPAINBACTERIALABSCESSESZhaoChunleiLiYamingLiWeiguoBaiJingmingWangGuoliLiDeshunHanChunqiLiangZhenrongLiuHaoLuoXigui(DepartmentofNuclearMedicine,TheFirstAffiliatedHospitalofChinaMedicalUniversity,Shenyang110001)ABSTRACTTheimagingandbiodistributionof18.5MBq99Tcm-DTPAinmiceinjectedwithstaphylo-coccus-inducedabscessesiscaried.TheplanarimagesofthewholebodyandbothhindlegsofeachmouseresectedareobtainedwithSPECT.Theabscessesarewellocated.Thecountratesoftisuesateachtimepointaredeterminedandthentheratiosofdiferenttissue,sradioactivelevelsarecalculated.ThehighratiosofA/Matdiferenttimeareobtained.Theresultsindi-catethat99Tcm-DTPAisasimpleandusefulagentforinflammatoryfocilocalization.Keywords99Tcm-DTPAinflammationradionuclideimaging

     

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