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Journal of ZheJiang University(Medical Science)  2012, Vol. 41 Issue (2): 183-187    DOI: 10.3785/j.issn.1008-9292.2012.02.010
    
201Tl and 99mTc-MIBI scintigraphy in evaluation of neoadjuvant chemotherapy for osteosarcoma

HUANG Zhong-ke,LOU Cen,SHI Guo-hua
Department of Nuclear Medicine,Sir Run Run Shaw Hospital,Zhejiang University School of Medicine,Hangzhou 310016,China
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Abstract  Objective: To evaluate the application of 201Tl and 99mTc-MIBI scintigraphy in assessment of neoadjuvant chemotherapy for osteosarcoma.
Methods: Twenty-two patients with osteosarcoma underwent both 201Tl and 99mTc-MIBI scintigraphy.According to tumor necrosis rate (TNR),22 patients were classified into three groups:Group 1(necrosis less than 50%),Group 2(50%~89% necrosis) and Group 3(necrosis greater than 90%).The uptake ratio(UR) was obtained in images before and after chemotherapy.The alteration ratio(AR) and tumor necrosis ratio (TNR) were calculated.
Results: In 201Tl images,URpre and URpost (mean±s.d.) of Group 1 were 2.14±0.67,2.07±0.71 (P>0.05); URpre and URpost of Group 2 were 3.45±1.57 and 2.02±0.97 (P<0.01); URpre and URpost of Group 3 were 3.57±0.67 and 1.36±0.20 (P<0.01). In 99mTc-MIBI images,URpre and URpost of Group 1 were 1.66±0.42 and 1.85±0.70 (P>0.05); URpre and URpost of Group 2 were 2.39±1.41 and 1.68±0.72 (P<0.05);URpre and URpost of Group 3 were 2.56±0.60 and 1.19±0.14 (P<0.01).The AR value in 201Tl scintigraphy was -0.03-0.72,the liner regression analysis of AR versus TNR showed a highly significant positive correlation (r=0.95).The AR value in 99mTc-MIBI scintigraphy was -1.21-0.64,the liner regression analysis of AR versus TNR showed a highly significant positive correlation (r=0.71).The liner regression analysis of AR in 201Tl scintigraphy versus AR in 99mTc-MIBI scintigraphy showed a highly significant positive correlation (r=0.70).
Conclusion: The AR changes significantly after neoadjuvant chemotherapy and is positively correlated with TNR,which indicates that 201TI- and 99mTc-MIBI scintigraphy can be used for evaluation of neoadjuvant chemotherapy.


Key wordsThallium radioisotopes/diag use      Technetium Tc 99m sestamibi/diag use      Bone neoplasms/drug ther      Chemotherapy,adjuvant      Antineoplastic agents/ther use      Thallium-201/diag use; 99mTc-MIBI/diag use; Osteosarcoma/radionuclide; Chemo-therapy; Relationship     
Published: 25 March 2012
Cite this article:

. 201Tl and 99mTc-MIBI scintigraphy in evaluation of neoadjuvant chemotherapy for osteosarcoma. Journal of ZheJiang University(Medical Science), 2012, 41(2): 183-187.

URL:

https://www.zjujournals.com/med/10.3785/j.issn.1008-9292.2012.02.010     OR     https://www.zjujournals.com/med/Y2012/V41/I2/183


201Tl和99mTc-MIBI显像定量分析在骨肉瘤新辅助化疗中的价值

目的:探讨201Tl和99mTc-MIBI显像在术前新辅助化疗治疗骨肉瘤中的临床价值。
方法:22例在新辅助化疗前和3周期化疗后均进行201Tl显像和99mTc-MIBI显像的患者,根据肿瘤坏死率的分级[1]将其分为3组:无反应组4例(Ⅰ级<50%),部分反应组12例(Ⅱ级50%~89%),反应良好组6例(Ⅲ级>90%)。对所采集的图像数据进行定性和半定量分析,通过测量肿瘤病灶与正常组织的放射性计数,计算摄取比率(uptake ratio,UR)和变化率(alteration ratio,AR)。并采用SPSS 13.0软件进行数据分析。
结果: 201Tl显像时,无反应组URpre和URpost分别为2.14±0.67和2.07±0.71,两者无统计学意义(P>0.05);部分反应组URpre为3.45±1.57,URpost为2.02±0.97,两者有显著统计学意义(P<0.01);反应良好组URpre为3.57±0.67,URpost为1.36±0.20,两者有显著统计学意义(P<0.01); 99mTc-MIBI显像时,无反应组URpre为1.66±0.42,URpost为1.85±0.70,两者无统计学意义(P>0.05);部分反应组URpre为2.39±1.41,URpost为1.68±0.72,两者有统计学意义(P<0.05);反应良好组URpre为2.56±0.60,URpost为1.19±0.14,两者有显著统计学意义(P<0.01); 201Tl显像时AR值范围为-0.03~0.72,AR值和TNR之间存在良好的相关性,相关系数r=0.95;99mTc-MIBI显像时AR值范围为-1.21~0.64,AR值和TNR之间存在良好的相关性,相关系数r=0.71;201Tl显像的AR值与99mTc-MIBI显像的AR值之间存在良好的相关性,相关系数r=0.70。
结论:201Tl显像与99mTc-MIBI显像显示新辅助化疗后AR值与TNR均存在良好的相关性,对骨肉瘤化疗疗效的评估有重要意义。201Tl显像对骨肉瘤化疗疗效的评估优于99mTc-MIBI显像,但两者无显著差别。

关键词: 铊放射性同位素/诊断应用; 99m锝甲氧基异丁基异腈/诊断应用; 骨肿瘤/药物疗法; 化学疗法,  辅助; 抗肿瘤药/治疗应用;
201铊/诊断应用;99m锝甲氧基异丁基异腈/诊断应用;骨肉瘤/放射性核素显像;化疗;相关性 
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