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食管鳞癌18F-FDG PET图像异质性及其对放疗靶区勾画影响分析 被引量:2

Tumor ^(18)F-FDG heterogeneity assessed by PET image texture analysis and its impact on target delineation for esophageal squamous cell carcinoma
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摘要 目的:探讨18氟-氟代脱氧葡萄糖(18 F-fluorodeoxyglucose,18 F-FDG)PET图像异质性对食管癌放疗靶区勾画的影响。方法:28例经病理确诊为食管鳞癌初治患者治疗前行18 F-FDG PET/CT扫描。通过视觉法和三维图像纹理参数(能量和熵)分析获得FDG摄取异质性。CT图像上勾画出肿瘤靶区(GTVCT)。PET图像上肿瘤靶区采用自动勾画法,分别采用40%SUVmax阈值勾画(GTVPET40%)和标准化摄取值(standardized uptake value,SUV)=2.5绝对值阈值勾画(GTVPET2.5)。分析FDG摄取异质性与不同方法勾画肿瘤靶区体积差值间的相关性。结果:3种方法获得的肿瘤靶区差异有统计学意义,GTVCT为(45.00±43.40)cm3明显大于GTVPET40%的(20.42±16.12)cm3和GTVPET2.5(35.88±36.33)cm3,其中GTVCT与GTVPET40%差异有统计学意义,t=4.34,P=0.00;GTVCT与GTVPET2.5差异有统计学意义,t=4.80,P=0.00;GTVPET40%与GTVPET2.5:差异有统计学意义,t=3.59,P=0.00。肿瘤摄取异质性与传统代谢参数SUVmax和SUVmean及靶区体积间存在相关性,|r|=0.41,P≤0.03。GTVPET40%和GTVPET2.5之间的差异与熵呈正相关,r=0.41,P=0.029;与能量负相关,r=-0.39,P=0.04。视觉评分与GTVPET40%和GTVPET2.5之间的百分率差值也存在相关性,r=0.59,P=0.001。结论:PET图像上靶区勾画受到FDG摄取异质性的影响,特别是异质性较大的肿瘤。PET精确靶区勾画方法需要考虑到肿瘤异质性的影响。 OBJECTIVE:To evaluate new PET image parameters,FDG uptake heterogeneity defined by texture anal- ysis or visual scoring,and its impact on target volume delineation for squamous cell esophageal cancer (SCEC). METH- ODS: Patients with newly diagnosed and pathologically proved SCEC (n=28) were received whole body 18 F-FDG PET/ CT scanning before treatments. Intra-tumor 18F_FDG uptake heterogeneity was accessed by visual scoring and three-di- mensional image texture feature (entropy and energy). Tumor volumes were delineated on the CT (GTVcT) and PET images, using a fixed threshold at 40% of the SUVmax (GTVprT40) or the absolute SUV cut-off values of 2.5 (GTVpET2.S).
出处 《中华肿瘤防治杂志》 CAS 北大核心 2013年第16期1270-1273,1278,共5页 Chinese Journal of Cancer Prevention and Treatment
关键词 食管肿瘤 发射型正电子断层显像 氟代脱氧葡萄糖 异质性 靶区勾画 esophageal neoplasms positron emission tomography deoxyglucose heterogeneity target delineation
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参考文献11

  • 1Han D,Yu J,Yu Y,et al. Comparison of (18)F-fluorothymidine and (18) F-fluorodeoxyglucose PET/CT in delineating gross tumor volume by optimal threshold in patients with squamous cell carcinoma o{ thoracic esophagus[J] Int J Radiat Oncol Biol Phys,2010,76(4) :1235 1241. 被引量:1
  • 2E1 NI,Grigsby P,Apte A,et al. Exploring feature based approa- ches in PET images for predicting cancer treatment outcomes [J]. Pattern Recognit,2009,42(6) : 1162-117l. 被引量:1
  • 3Vaidya M,Creach KM,Frye J, et al. Combined PET/CT image characteristics for radiotherapy tumor response in lung cancer [J]. Radiother Oncol, 2012,102(2) :239-245. 被引量:1
  • 4Tixier F, Le RCC, Hatt M,et al. Intratumor heterogeneity char- acterized by textural features on baseline 18F-FDG PET images predicts response to concomitant radioehemotherapy in esophage- aleancer[J]. J NuclMed,2011,52(3):369-378. 被引量:1
  • 5Hatt M,Cheze-le RC,van BA,et al. Impact of tumor size and tracer uptake heterogeneity in (18)F-FDG PET and CT non- small cell lung cancer tumor delineation[J]. J Nucl Med,2011, 52( 11), 1690-1697. 被引量:1
  • 6杨哲,颜廷秀,洪士强,梁荣祥.食管癌三维适形放疗疗效和靶区勾画与局部复发关系的探讨[J].中华肿瘤防治杂志,2008,15(12):939-942. 被引量:17
  • 7Dong X, Xing L,Wu P, et al. Three-dimensional positron emis- sion tomography image texture analysis of esophageal squamous cell carcinoma: relationship between tumor 18F fluorodeoxyglu- cose uptake heterogeneity, maximum standardized uptake value, and tumor stage[J]. Nucl Med Commun,2013,34(1) :40 46. 被引量:1
  • 8Hatt M,Visvikis D. Defining radiotherapy target volumes using 18F fluoro-deoxy-glucose positron emission tomography/compu- ted tomograph.y:Still a Pandora's box?:in regard to Devic et al [J]. IntJ Radiat OncolBiolPhys,2010,78(5):1605. 被引量:1
  • 9Miller TR,Pinkus E,Dehdashti F,et al. Improved prognostic value of 18 F-FDG PET using a simple visual analysis of tumor characteristics in patients with cervical cancer[J]. J Nucl Med, 2003,44 (2) : 192- 197. 被引量:1
  • 10Watabe T,Tatsumi M,Watabe H, et al. Intratumoral hetcroge neity of F-18 FDG uptake differentiates between gastrointestinal stromal tumors and abdominal malignant lymphomas on PET/ CT[J]. Ann Nuc[ Med,2012,26(3):222-227. 被引量:1

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