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18F-脱氧葡萄糖PET-CT检测食管癌病变长度的临床价值 总被引:13,自引:4,他引:13
目的 评价18F-脱氧葡萄糖(FDG)PET-CT诊断食管癌病变长度的临床价值,并和其他检测方法比较.方法 选择食管癌患者32例,其中胸上段食管癌1例,胸中段22例,胸下段9例.术前分别行食管镜、食管钡餐、CT和FDG PET-CT检查,并检测食管癌原发灶病变位置和长度.1周内行食管癌手术,手术大体标本与检查结果比较.结果 食管钡餐、CT、FDG PET-CT分段与大体标本全部符合,而食管镜检查有2例分段与大体标本不符合.食管镜、食管钡餐、CT、PET-CT所示食管癌病变长度与大体标本的相关系数分别是0.741、0.746、0.870、0.876(P值均为0.000);所示食管癌原发灶长度分别为(3.8±1.4)、(4.1±1.5)、(4.4±1.6)、(5.3±1.9)和(4.7±1.7)cm,4种检查结果与大体标本差异均有统计学意义(P=0.000、0.007、0.025、0.001),病变长度从小到大依次为食管镜、食管钡餐、CT、大体标本、PET-CT.但考虑到标本离体后有一定程度的回缩,实际病变长度与PET-CT最接近.结论 PET-CT较准确的显示食管癌病变实际长度,有一定临床价值.对手术病例,PET-CT可用于指导术者选择食管癌切除的剖胸径路及食管切除长度;对放疗病例,PET-CT有助于指导放疗靶区的精确确定. 相似文献
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18FDG PET-CT检测进展期食管癌淋巴结转移的临床价值 总被引:6,自引:1,他引:6
目的评价^18FDG PET-CT对进展期食管癌淋巴结转移的诊断价值及临床意义.方法随机选择拟行手术治疗的进展期食管癌患者30例,术前1周内行^18EDG PET-CT检查及CT增强扫描.根据术后病理结果,对比CT与PET-CT诊断食管癌淋巴结转移的敏感性、特异性、阴性预测值、阳性预测值与准确性的差异.结果术后病理原发灶均为鳞状细胞癌,22例存在淋巴结转移.共切取淋巴结243个,病理确定的转移淋巴结49个,平均直径1.4 cm(0.3~2.8 cm).CT确定的转移淋巴结26个,平均直径1.7 cm(1.1~2.8 cm);敏感性和特异性分别为40.8%和96.9%,阳性预测值76.9%,阴性预测值86.6%,准确性85.6%.18FDG PET-CT确定淋巴结转移63个,平均直径1.5cm(0.8~2.8 cm);敏感性和特异性分别为93.9%和91.2%,阳性预测值73.0%,阴性预测值98.3%,准确性91.9%.18FDG PET-CT的敏感性、阴性预测值、准确性均高于CT(P<0.001、0.001、0.05).结论18FDGPET-CT是检测进展期食管癌淋巴结转移的有用工具,可指导手术剖胸径路的选择、优化适形放疗计划,临床应用价值优于CT. 相似文献
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目的 评价氟脱氧葡萄糖(FDG)PET-CT常规及双时相显像在监测食管癌术后复发转移中的应用价值.方法 回顾分析食管癌术后临床怀疑复发转移而行FDG PET-CT检查的48例患者临床资料,根据细胞学、病理或随访结果分析FDG PET-CT检查结果.两样本率比较采用Fisher's精确概率法检验.结果 48例患者中位随访21.5个月,34例出现复发转移,确定复发转移灶61处.FDG PET-CT常规显像对全部病灶诊断的敏感性、特异性和准确性分别为93.44%、74.29%和86.46%;对局部复发和区域淋巴结转移的敏感性、特异性、准确性分别为91.67%、57.14%、78.95%和90.48%、77.78%、84.62%.FDG PET-CT双时相显像诊断局部复发+区域淋巴结转移的敏感性、特异性、准确性均高于常规显像,分别为96.97%∶90.90%(P=0.613)、96.00%∶72.00%(P=0.049)、96.55%∶82.76%(P=0.029).结论 FDG PET-CT常规显像虽然检测食管癌术后局部复发及区域淋巴结转移的特异性和准确性较低,但仍是检测其术后复发转移的有效手段;双时相显像较常规显像更具优势,可有效提高检测的特异性及准确性.Abstract: Objective To evaluate the clinical value of regular and dual-time-point 18-fluorodeoxyglucose positron emission tomography-CT(FDG PET/CT)imaging for recurrence and metastasis in esophageal carcinoma(EC)after curative esophagectomy. Methods A retrospective study was done on 48 patients received curative esophagectomy, who underwent FDG PET/CT scans to detect doubtful recurrent or metastatic lesions. The diagnostic accuracy of FDG PET-CT was assessed with the help of pathological findings as well as clinical or follow-up data. Using Fisher's Exact Test from SPSS 11.5 to analyze the data.Results Of the 48 patients, after a median follow-up of 21.5 months, 61 sites of local and regional recurrence or metastasis were finally confirmed in 34 patients. The sensitivity, specificity and accuracy of regular FDG PET/CT imaging in detecting recurrence of all sites were 93.44%, 74.29% and 86.46%respectively. The specificity and accuracy of local recurrence and regional metastasis were 57.14% ,78.95% and 77.78% ,84.62%, respectively. The sensitivity, specificity and accuracy of dual-time-point FDG PET/ CT imaging in detecting local and regional recurrence(96.97% ,96.00% and 96.55%)were higher than those of regular FDG PET/CT(90.90%, 72.00% and 82.76%)and there were significant differences of specificity and accuracy(P = 0.049, P = 0.029). Conclusions Regular FDG PET/CT imaging is highly effective in detecting recurrence and metastasis in EC patients after curative esophagectomy despite the low specificity and accuracy. Dual-time-point FDG PET/CT imaging can elevate the specificity and accuracy. 相似文献
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18F-脱氧葡萄糖PET/CT诊断复发性食管癌的价值 总被引:2,自引:0,他引:2
背景与目的:PET/CT实现了功能和解剖影像的同机融合,在癌症患者的诊断和分期中的地位日益重要。本研究的目的是探讨^18F-脱氧葡萄糖(FDG)PET/CT诊断复发性食管癌的临床价值。方法:临床疑复发的24例食管癌患者行PET/CT显像,经迭代法处理和重建,获得衰减校正后的PET图像、CT图像和PET/CT融合图像,以目测双盲阅片法进行帧对帧诊断分析。最后诊断依靠病理检查和临床随访。比较PET、CT和PET/CT的灵敏度、特异性、准确度、阳性预测值、阴性预测值和定位准确性。结果:24例患者PET/CT显像的灵敏度、特异性、准确度、阳性预测值和阴性预测值分别为94.7%,80.0%,91.7%,94.7%和80.0%;PET分别为81.2%,75.0%,79.1%,86.7%,66.7%;CT分别为62.3%,66.7%,62.5%,69.2%,54.5%。PET/CT的定位准确性为89.5%,PET和CT分别为33.3%和84.6%。PET/CT的诊断准确性高于CT,定位准确性高于PET。结论:评价复发性食管癌,PET/CT的灵敏度、特异性和准确度较高。PET/CT对复发性食管癌放射治疗靶区的确定有较高价值。 相似文献
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目的评估18F-FDG PET-CT在食管癌术后放疗后局部复发中的诊断价值。方法回顾性分析16例食管癌术后放疗后临床怀疑复发而行检查患者的临床及影像学资料,结合细胞学及病理学结果分析其18F-FDG PET-CT检查结果。结果 16例患者中,12例吻合口局部代谢明显增高,以标准摄取值最大值SUVmax≥2.5为阳性诊断标准,18F-FDG PET-CT对局部复发的敏感性和特异性分别为100%、80%。结论18F-FDG PET-CT对食管癌术后放疗后局部复发有很好的诊断价值,是检测食管癌术后放疗后局部复发的有效手段。 相似文献
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目的研究18FDG PET-CT在鼻咽癌放疗后的应用价值。方法27例鼻咽癌放疗后CT检查发现鼻咽黏膜增厚者在放疗后8-32周行全身18FDG PET-CT检查,并在检查后对全部病例随访12个月以上,所有患者均行纤维鼻咽镜活检。利用PET-CT评价鼻咽癌在放疗后转移及残留,并分析SuV值与预后相关性。结果27例中2例通过PET-CT检查发现远处转移,及时接受相应治疗。以SUV≥2.5作为阳性标准,PET-CT诊断鼻咽癌局部残留20例,其中经病理证实18例;诊断为局部低代谢性病灶7例,病理证实5例。18例被确诊为鼻咽癌局部残留者分别接受鼻咽腔内放疗或立体定向适形放疗。全组患者1年局部控制率为70%,1年总生存率为81%。SUV≥5者11例,1年局部控制率为55%,远处转移率为82%,1年生存率为64%。2.5≤SUV<5者9例,1年局部控制率为67%,远处转移率为22%,1年生存率为89%。两者1年局部控制率和生存率比较差异无统计学意义(P=0.670、0.319),远处转移率差异有统计学意义(P=0.022)。结论18FDG PET-CT对于鉴别鼻咽癌患者放疗后病灶残留具有诊断意义,放疗后局部残留病灶SUV值与远处转移率有关。 相似文献
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目的 从分子影像学角度,探讨治疗前食管癌原发灶PET-CT氟代脱氧葡萄糖(FDG)摄取与病变长度、肿瘤浸润深度、组织分化程度以及淋巴结转移状况的关系.方法 68例食管鳞癌患者术前行FDG PET-CT检查,测定最大标准摄取值(SUVmax),根据术后病理确定其病变长度、浸润深度、分化程度以及淋巴结转移情况.结果 68例食管癌患者肿瘤原发灶的SUVmax为10.7±5.3.不同浸润深度、分化程度及淋巴结转移情况的食管癌SUVmax差异均有统计学意义(均P<0.05).原发灶SUVmax与病变长度、浸润深度、分化程度及淋巴结转移情况均呈正相关(r=0.512,P=0.01;r=0.860,P=0.000;r=0.781,P=0.000;r=0.852,P=0.000).结论 食管癌原发灶SUVmax与病变长度、浸润深度、分化程度均呈正相关,发生淋巴结转移者原发灶的SUVmax高于无淋巴结转移者. 相似文献
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目的:探讨^18F-脱氧葡萄糖(FDG)hPET在诊断非小细胞肺癌放化疗后复发的临床价值。方法:21例非小细胞肺癌患者,临床疑复发而行^18F-FDG hPET显像,21例患者同期行cT或MRI检查。最后诊断依靠病理检查和临床随访。结果:2l例患者中^18F-FDG hPET显像阳性17例,其中1例假阳性;阴性4例,其中假阴性1例。^18F-FDG hPET显像的灵敏度、特异性、准确度和阳性预测值分别为94.1%、75%、90.5%、94.1%:cT或MRI检查的灵敏度、特异性、准确度和阳性预测值分别为60%、66.7%、61.9%、81.8%。结论:评价放化疗后复发性非小细胞肺癌,^18F-FDG hPET显像比CT或MR1有更高的灵敏度、特异性和准确度;对复发性非小细胞肺癌放射治疗靶区的定义有较高价值,费用低于PET,值得在临床上推广应用。 相似文献
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氟脱氧葡萄糖PET-CT确定食管癌淋巴结放疗靶区的可行性研究 总被引:5,自引:3,他引:5
目的分析~(18)FDG PET-CT诊断食管癌淋巴结转移的优势及确定淋巴结放疗靶区的可行性。方法回顾性分析30例食管癌患者的临床病理资料,分析PET-CT在诊断淋巴结转移方面的优势,基于CT和PET-CT确定淋巴结大体肿瘤靶区(GTVN)和临床靶区(CTVN),根据术后病理分析PET-CT在确定淋巴结放疗靶区中的价值。结果13例由CT确定的GTVN(GTVN-CT)与病理一致,19例基于PET-CT的GTVN(GTVN-PET-CT)与病理相符。对照淋巴结病理结果,PET-CT改变了15例由CT确定的GTVN和其中10例的CTVN。PET-CT导致GTV缩小(GTVN-PET-CTGTVN- CT的12例共涉及22组淋巴结,其中9例CTVN亦扩大。GTVN-PET-CT>GTVN-CT的亚组分析显示,PET-CT确定的淋巴结GTV准确率高于CT(67%:25%,P=0.041)。结论PET-CT在诊断淋巴结转移中的优势使之可作为优化和确定食管癌淋巴结放疗靶区的有用工具。 相似文献
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目的 探讨食管癌术前CT扫描诊断淋巴结转移与术后病理结果的一致性,为食管癌放疗靶区勾画提供参考标准.方法 回顾分析本院接受食管癌根治性切除术的618例患者,术前均未行放化疗,术后病理资料完整.均于术前1周在本院行颈、胸、腹部CT检查,将CT图像经网络以数字化形式传输到三维治疗计划系统,并经三维重建成像.观察测量并记录CT诊断淋巴结转移的敏感性、特异性、准确率,与术后病理诊断一致率比较行x2检验或Fisdher's精确法.结果 全组淋巴结转移率为39.2%,下颈及锁上区、上纵隔、中纵隔、下纵隔及上腹区的转移率胸上段分别为3.2%、20.8%、6.4%、2.4%、8.0%,胸中段分别为1.5%、7.8%、22.0%、3.5%、22.8%,胸下段分别为0%、2.0%、21.4%、6.1%、32.7%.术前CT对食管癌淋巴结转移诊断的敏感性、特异性、准确率分别为58.3%、70.7%、65.9%.全组CT诊断0、1、2、≥3个淋巴结转移与术后病理证实转移的一致率分别为72.4%、32.2%、58.3%、73.1%(x2=82.61,P=0.000).胸上段癌中CT诊断无淋巴结转移与术后病理证实的一致率高于1个淋巴结转移与术后病理证实的一致率(85.8%∶36.8%,P=0.000);胸中段癌中CT诊断0、1、2、≥3个淋巴结转移与术后病理的一致率分别为71.1%、30.1%、55.6%、77.8%(x2=55.14,P=0.000).结论 术前CT扫描尚能比较准确地反映食管癌淋巴结转移的分布规律,尤其诊断无淋巴结转移和3个以上淋巴结转移时与术后病理的一致率最高,而诊断1个淋巴结转移时与术后病理的一致率最低,为根治性切除术后放疗的靶区勾画提供一定参考.Abstract: Objective To analyze the rule of lymph node metastasis, compare the preoperative computed tomographic findings with pathological diagnosis in thoracic esophageal carcinoma and to evaluate the clinical value. Methods Six hundred and eighteen patients with esophageal carcinoma after radical resection were enrolled. All patients did not receive any preoperative radiotherapy or chemotherapy, having complete information of postoperative pathological reports. CT scanning were applied to all patients in our hospital. The CT image were transmitted to the three-dimensional treatment planning system via the network at digital format and be reconstructed. In which system the sensitivity, specificity and accuracy rates in diagnosis of lymph node metastasis of the preoperative CT image were observed, measured and recorded. x2 test or Fisdher's statistical methods was adopted for comparing the concord rate of preoperative CT scanning with postoperative pathological diagnosis. Results Lymph nodes metastasis were defected in 242 of the 618 treated patients(39.2%), The rate of lymph node metastasis present in lower neck, upper-mediastinum,middle-mediastinum, lower-mediastinum, and superior abdomen regions in upper-thoracic esophageal carcinoma were 3.2% ,20.8% ,6.4% ,2.4% and 8.0%, in middle-thoracic esophageal carcinoma 1.5%,7.8% ,22.0% ,3.5% and 22.8%, and in lower-thoracic esophageal carcinoma 0% ,2.0% ,21.4% ,6.1% and 32.7%, respectively. The sensitivity, specificity, positive predictive value, negative predictive value,younden index and accuracy rates of diagnosis of lymph node metastasis with preoperative CT scan were 58.3%, 70.7%, 56.2%, 72.5%, 29.0% and 65.9%, respectively. The concordance rate of 0, 1, 2 and ≥ 3 lymph node metastasis by preoperative CT scanning with postoperative pathological diagnosis were 72.4%, 32.2% , 58.3% and 73.1%, respectively in whole group(x2 = 82. 61, P = 0.000). The concordance rate of no lymph node metastasis by CT scan comparing with that by postoperative pathological diagnosis was higher than that of the 1 lymph node metastasis in upper-thoracic esophageal carcinoma 3 lymph node metastasis were 71.1%, 30.1%, 55.6% and 77.8%, respectively(x2 =55.14,P =0.000.Conclusions Preoperative CT image can accurately predict the distribution patterns of the lymph node metastasis in esophageal carcinoma. The concordance rate was the highest in diagnosis of 0 and ≥3 lymph node metastasis, the lowest in diagnosis of one lymph node metastasis. These findings are valuable for definition of the target range of radiotherapy after radical resection of esophageal carcinoma. 相似文献
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食管癌是最常见的消化道恶性肿瘤之一,放化疗是食管癌多学科综合治疗的重要组成部分。近年来,18氟脱氧葡萄糖正电子发射断层显像/X线计算机体层成像技术(18FDG PET-CT)被广泛用于食管癌放疗肿瘤靶区的确定、放疗后期局部加量及新辅助放化疗病理缓解率、根治性放化疗疗效及预后预测等各方面。现就 18FDG PET-CT在食管癌放化疗中的应用作一综述。 相似文献
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目的 探讨PET-CT在食管癌临床分期诊断和三维适形放疗靶区勾画及治疗计划制定中的应用价值.方法 2007-2008年经病理证实的食管癌患者20例人组,其中2例接受手术治疗,18例行三维适形放疗.患者疗前行PET-CT模拟定位,比较食管镜、食管钡餐造影、CT、PET-CT_(SUV2.5)、PET-CT_(40%SUVmax)图像上的病变长度及最大横径,观察CT与PET-CT对临床分期诊断的差异.依据CT、PET-CT_(SUV2.5)和PET-CT<40%SUVmax>勾画靶区并制定治疗计划,评价3套计划受量情况.结果 食管镜、食管钡餐造影、CT、PET-CTS_(SUV2.5、PET-CT_(40%SUVmax))所示病变长度分别为4.93、5.06、6.67、5.89、4.84 cm,CT、PET-CT_(SUV2.5)、PET-CT_(40%SUV)所示病变最大横径分别为4.05、3.38、2.95 cm.CT图像诊断31个淋巴结转移,PET-CT图像诊断21个淋巴结转移,共同诊断14个,17个淋巴结CT诊断阳性而PET-CT为阴性,7个淋巴结CT诊断阴性而PET-CT为高代谢.5例患者经PET-CT模拟定位后M分期由Mn期改为_1期,1例经PET-CT模拟定位后由M_0期改为M_1期,1例CT和PET-CT M分期一致.依据CT和PET-CT_(SUV2.5)勾画的GTV基本相等2例,CTV_(CT)GT_(SUV2.5)者13例,GTV_(SUV2.5),相似文献