^18F—FDG标准摄取值诊断鼻咽癌的研究

目的：探讨^18F-脱氧葡萄糖(^18F—fluorodeoxyglucose，^18F-FDG)PET显像的标准摄取值(standard uptake value，SUV)在鼻咽癌诊断中的价值。方法：对48例受检者行^18F—FDG PET显像并计算鼻咽部SUV，以SUV≥2．5作为阳性结果，其中35例患者行病理组织学检查。最后诊断根据病理检查确诊。结果：^18F—FDG PET SUV诊断原发性鼻咽癌的灵敏度为100％，特异度为65％，阳性预测值为80％，阴性预测值为100％，准确性为85．4％，低分化鳞癌与未分化癌的SUV差异有统计学意义，F=8．586，P=0．007，鼻咽癌、鼻咽炎症和非鼻咽病变SUV三组间差异有统计学意义，F=50．285，P=0．000，而鼻咽癌与鼻咽炎症的SUV差异无统计学意义，P=0．121。结论：^18F-FDG PET SUV诊断鼻咽癌具有较高的灵敏度和阴性预测值，在鼻咽癌的诊断上有重要价值。     

18F-FDG PET/CT SUVmax及CT值双定量分析在肺癌纵隔淋巴结鉴别诊断中的价值

目的:探讨18F-FDG PET/CT显像对肺癌纵隔淋巴结的定量鉴别诊断方法.方法:回顾性分析天津医科大学附属肿瘤医院2005年4月至2009年10月间142例肺部病变患者手术前的CT、PET、PET/CT显像结果.142例患者行PET/CT检查前均未进行抗肿瘤治疗,行PET/CT检查后1个月内行手术或活检取得病理.手术淋巴结分区以1997年美国AJCC为标准.对CT、PET、PET/CT显像结果进行定量分析,比较纵隔淋巴结阳性及阴性者SUVmax、CT值、CT短径的差异,绘制SUVmax值、CT值的ROC曲线,找到最佳诊断界点.分别计算单纯PET、单纯CT值、单纯CT短径及PET/CT双定量分析的灵敏度、特异度、阳性预测值、阴性预测值、准确度等指标,并对其结果进行统计学分析.用多个样本率比较的卡方检验比较单纯PET、单纯CT值、单纯CT短径以及PET/CT SUVmax、CT值双定量分析对纵隔淋巴结的诊断效能.结果:SUVmax、CT值、CT短径差异有统计学意义,SUVmax取2.45,CT值取38.5Hu为诊断诊断界点.当SUVmax≥2.45时短径差异无统计学意义,CT值差异有统计学意义.当SUVmax≥2.45且CT值<38.5Hu,18F-FDG PET/CT显像诊断纵隔淋巴结转移的灵敏度、特异度、阳性预测值、阴性预测值、准确度分别为50.9%、96.5%、92.8%、72.5%、77.0%,其准确性高于单纯PET、单纯CT值及单纯CT短径(χ2=19.192,P=0.000).结论:PET/CT显像对于纵隔淋巴结转移的诊断具有明显价值,其准确性优于单纯PET或CT;当SUVmax≥2.45且CT值<38.5Hu时,提示转移可能性大.     

18F-FDG PET/CT显像在鼻咽癌分期与疗效监测中的临床应用价值

背景与目的:18F-脱氧葡萄糖(fluorine-18 fluorodeoxyglucose,18F-FDG)PET/CT显像可明显提高肺癌、食管癌等多种肿瘤的诊断、分期与疗效监测的准确性,有助于更准确地制定治疗方案.本研究探讨全身18F-FDG PET/CT显像在鼻咽癌首次分期、再分期及疗效监测中的临床应用价值.方法:回顾性分析澳大利亚Peter MacCallum肿瘤中心2002年2月至2005年12月43例鼻咽癌患者的18F-FDG PET/CT全身扫描报告,根据临床资料、病理结果及临床随访结果,计算18F-FDG PET/CT与传统影像学检查CT、MRI的准确性、特异性、灵敏度、阳性预测值与阴性预测值,并对结果进行比较和分析.结果:18F-FDGPET/CT诊断鼻咽癌总的准确率、敏感性、特异性、阳性预测值与阴性预测值分别为95.3%、100.0%、85.7%、93.8%、100.0%,传统影像学检查CT、MRI分别为65.5%、79.4%、64.7%、81.8%、57.9%. 18F-FDG PET/CT诊断结果使2例首次分期、7例再分期患者治疗方案得到改变,并影响1例首次分期和3例再分期患者治疗方案的制定;在疗效监测组中,指导医生修改治疗方案共11例(其中5例为原则性的修改).18F-FDG PET/CT检测到2例第二原发肿瘤,1例是甲状腺癌,1例是低度恶性胃癌.结论:18F-FDG PET/CT全身显像对鼻咽癌N、M分期与疗效监测的临床作用可能优于CT、MR检查.     

MRI和PET-CT对放疗后鼻咽癌颅底复发的诊断价值

[目的]比较磁共振成像(MRI)和18F-氟代脱氧葡萄糖—正电子发射计算机体层摄影(PET-CT)对放疗后鼻咽癌颅底复发的诊断价值.[方法]48例放疗后的鼻咽癌患者,均行鼻咽MRI和PET-CT显像.比较MRI和PET-CT诊断放疗后鼻咽癌颅底复发的灵敏度、特异性、准确率、阳性预测值及阴性预测值.[结果] PET-CT和MRI对颅底复发诊断的灵敏度、特异性、准确率、阳性预测值和阴性预测值分别为94.1％和88.2％、42.9％和35.7％、79.2％和72.9％、80.0％和76.9％、75.0％和55.6％.PET-CT和MRI联合时灵敏度、特异性、阳性预测值、阴性预测值和准确率分别为93.8％、31.3％、73.2％、71.4％和72.9％,与MRI和PET-CT比较,差异均无统计学意义(P＜＞0.05).颅底有软组织者复发组占85.3％,未复发组仅占28.6％,差异有统计学意义(P＜0.05).复发组标准化摄取值(SUV)平均为7.59(1.9～15.4),未复发组SUV为3.86(0.7～8.4),差异有统计学意义(P=0.000).[结论]PETCT和MRI在鼻咽癌放疗后疑似颅底复发诊断上无明显差异,两者联合亦未显示优势.     

~(18)F-FDG PET/CT诊断乳腺癌及腋窝淋巴结转移的价值

目的探讨~(18)F-脱氧葡萄糖(~(18)F-FDG)正电子发射断层扫描(PET/CT)诊断乳腺癌和腋窝淋巴结(ALN)转移的价值。方法选取2015年7月至2016年4月间海南省人民医院收治的79例拟诊断为乳腺癌的患者,均采用~(18)F-FDG PET/CT、超声检查和钼靶X线检查。比较三种不同方式的诊断结果,对比分析~(18)F-FDG PET/CT检查结果和术后病理结果,讨论~(18)F-FDG PET/CT诊断乳腺癌和ALN转移的价值。结果术后病理结果显示,所有疑为乳腺癌的患者均确诊为乳腺癌。~(18)F-FDG PET/CT检查结果为阳性64例,阴性15例,灵敏度为81.0%;超声检查结果为阳性47例,阴性32例,灵敏度为59.5%;钼靶X线检查结果为阳性53例,阴性26例,灵敏度为67.1%,~(18)F-FDG PET/CT检查灵敏度明显高于超声检查和钼靶X线,差异均有统计学意义(P<0.05)。~(18)F-FDG PET/CT诊断ALN转移的灵敏度为35.0%,准确度为70.9%,特异度为83.1%,阴性预测值为79.0%,阳性预测值为41.2%。结论~(18)F-FDG PET/CT对乳腺癌的诊断的灵敏度明显优于超声检查和钼靶X线检查,诊断ALN转移有较好的特异度和准确度。     

18F-FDG PET与99Tcm-MDP显像对肿瘤骨转移的诊断价值

  目的 探讨18F-FDG PET与99Tcm-MDP显像对肿瘤骨转移的诊断价值。方法 93例肿瘤患者2周内行18F-FDG PET和99Tcm-MDP显像，比较分析两种显像结果。结果 93例肿瘤患者PET和MDP诊断骨转移64例。64例骨转移患者中PET和MDP阳性43例，PET阳性而MDP阴性16例，PET阴性而MDP阳性5例。18F-FDG PET和99Tcm-MDP显像诊断骨转移的灵敏度分别为92.2 %，75.0 %（P＜0.05）；特异度分别为93.1 %，79.3 %（P＞0.05）；准确度分别为92.5 %，76.3 %（P＜0.01）。结论 18F-FDG PET诊断肿瘤骨转移的灵敏度和准确性显著高于99Tcm-MDP显像。18F-FDG PET对骨转移有一定的诊断价值。     

~（18）F-FDG PET/CT显像在肾上腺肿瘤诊断中的应用

目的：评价18F-脱氧葡萄糖（18F-fluorodeoxyglucose,18F-FDG）PET/CT显像在肾上腺肿瘤诊断中的应用价值。方法：回顾性分析42例肾上腺肿瘤患者的全身18F-FDG PET/CT及CT平扫加增强的影像学资料,比较两者对肾上腺肿瘤的诊断价值。结果：42例中,原发性肾上腺肿瘤30例,均经手术病理证实。其余12例为转移性肾上腺肿瘤,肾癌转移4例,肺癌转移7例,肝癌转移1例。18F-FDG PET/CT检查阳性42例,敏感度100%,良性病变的SUV值为1.1-2.6,平均1.8,恶性病变的SUV值为2.5-12.3,平均6.0。良恶性病变的SUV值差异有统计学意义（P〈0.01）。CT平扫加增强检查阳性38例,敏感度90.5%。PET/CT对肾上腺肿瘤的敏感度明显高于CT,两者差异有统计学意义（P〈0.05）。结论：18F-FDG PET/CT在肾上腺肿瘤诊断中具有重要价值,敏感度高于CT。     

18F-FDG PET-CT CT 在诊断乳腺癌腋窝淋巴结转移状态的对比研究*

目的:通过与CT对比,探讨18F-FDG PET-CT 在诊断乳腺癌患者腋窝淋巴结转移中的价值。方法:回顾性分析22例行乳腺癌改良根治术患者的术前18F-FDG PET-CT 、CT图像。在CT图像上分别以淋巴结最短径>0.5cm（A 标准）、最短径≥1.0cm（B 标准）及最长径≥1.0cm（C 标准）为判定淋巴结转移的标准;在PET-CT 图像上,分别以目测腋窝淋巴结出现18F-FDG 异常放射性浓聚为判定淋巴结阳性的标准（D 标准）及半定量分析法异常放射性浓聚灶最大标准化摄取值（maximum standard uptake value ,SUV max）≥1.0 为判定淋巴结转移标准（E 标准）。 以术后病理为金标准,比较不同影像方法诊断腋窝淋巴结转移状态的价值。结果:乳腺癌患者腋窝阳性与阴性淋巴结在大小及SUV max 方面的差异均具有统计学意义。不同诊断标准中,以PET-CT 的总体诊断准确率及与病理吻合度Kappa 值最高,其中A 标准灵敏度最高（59.3%）而特异度最低（83.5%）;B 标准特异度和阳性预测值最高（分别为98.2% 、72.7%）,而灵敏度和阴性预测值最低（27.1% 、88.4%）;C 标准各项诊断指标相对较差,无突出项;PET-CT 图像目测与半定量诊断结果相同,其诊断准确性（90.1%）、阴性预测值（92.5%）均优于单独CT诊断,且与病理诊断吻合度较好（Kappa 值为0.57）,在诊断灵敏度（55.9%）、特异度（96.1%）及阳性预测值（71.7%）方面与单独CT比较也具较高诊断价值,阳性组SUV max 较阴性组明显为高,二者差异有统计学意义（P=0.000）。 不同影像方法在诊断腋窝淋巴结转移时差异有统计学意义（P<0.05）。 结论:18F-FDG PET-CT 是一种直观有效的评价乳腺癌腋窝淋巴结转移状态的方法。      

18F-FDG PET/CT在恶性肿瘤神经浸润中的诊断价值

目的探讨18F-氟代脱氧葡萄糖(18F-FDG)正电子发射断层显像/计算机断层扫描(PET/CT)对恶性肿瘤神经浸润的诊断价值。方法对50例经病理检查证实的恶性肿瘤患者行18F-FDG PET/CT检查,将病理组织学结果、抗炎治疗后1个月随访结果、化疗后临床随访结果作为诊断神经浸润的金标准,评估18F-FDG PET/CT的诊断价值。结果50例恶性肿瘤患者中,PET/CT检查神经浸润阳性14例,其中真阳性10例,假阳性4例;PET/CT检查显示沿受累神经走形的线性代谢活动,最大标准摄取值(SUVmax)为2.5~25.2,平均(7.6±6.5)。18F-FDG PET/CT检查诊断恶性肿瘤神经浸润的灵敏度为83.33%,特异度为89.47%,阳性预测值为71.43%,阴性预测值为94.44%,准确度为88.00%。结论18F-FDG PET/CT有助于早期诊断恶性肿瘤患者的神经浸润情况,从而对患者进行针对性的干预。     

18F-FDG PET/CT与99Tcm-MDP骨显像在恶性肿瘤骨转移中的检查效能比较

目的:比较18F-FDG PET/CT与99Tcm-MDP骨显像对肿瘤骨转移灶的检出率,探讨两种方法在骨转移灶筛查中的价值。 方法:137例确诊恶性肿瘤患者在1月内分别进行99Tcm-MDP骨显像及18F-FDG PET/CT显像,比较分析两者对骨转移灶检出率的结果。结果:137例患者之中66例患者99Tcm-MDP骨显像为阳性,中轴骨、四肢骨均可出现,检出率为48.2%（66/137）; 71例骨显像阴性患者中有12例PET/CT结果为阳性。所有患者之中62例患者18F-FDG PET/CT为阳性,检出率为45.3%（62/137）,75例PET/CT阴性患者中有16例骨扫描结果为阳性。两种方法检出率之间比较（P=0.068）,差异无统计学意义;按四种骨质改变类型比较两种方法检出率（P=0.173）,差异无统计学意义;按CT溶骨性与成骨性类型分类比较两种方法（P=0.018）,两者差异有显著性意义。结论:18F-FDG PET/CT与99Tcm-MDP骨显像筛查恶性肿瘤骨转移灶效能无明显差别,18F-FDG PET/CT优势在于发现溶骨性病变,而99Tcm-MDP骨显像的优势为成骨性改变。     

Cost-effectiveness of dual-head 18F-fluorodeoxyglucose PET for the detection of recurrent laryngeal cancer

The study is based upon 80 patients, suspected of having recurrent laryngeal cancer, who underwent an 18F-FDG PET study on a coincidence camera and a laryngoscopic biopsy under general anaesthesia. The potential value of 18F-FDG PET in the detection of local relapses of laryngeal cancer after radiotherapy by use of a coincidence camera was prospectively assessed, and a cost-effectiveness analysis was performed retrospectively. The effectiveness of 18F-FDG PET is reflected in sensitivity and specificity, positive predictive value (PPV) and negative predictive value (NPV) using comparison with the biopsy results as a gold standard. In case of a negative biopsy result, follow-up was continued for a minimum of one year. The results showed a sensitivity of 100%, a specificity of 85%, a PPV of 87%, and a NPV of 100%. Costs per patient of a 18F-FDG PET scan were 682 euro, whereas the saved costs by reducing CT-scans and panendoscopies were 618 euro. In this scenario implementation of 18F-FDG PET scintigraphy in the detection of recurrent laryngeal cancer has additional costs of 64 euro per patient. However, panendoscopy related complications, and potential improvement in quality of life due to early detection of recurrent disease were not taken into account in this study. In conclusion, the technical efficacy of 18F-FDG PET in the detection of recurrent laryngeal cancer is high. 18F-FDG PET is more accurate than CT, and in addition the cost-effectiveness ratio of 18F-FDG PET lies within an acceptable range and has further improvement potential when a quality of life factor is included in a prospective cost-effectiveness analysis.     

^18F-FDG PET/CT双时相显像在胰腺良恶性病变鉴别诊断中的应用

目的评价双时相显像在胰腺良恶性鉴别诊断中的应用价值。方法对24例胰腺癌患者和10例胰腺良性病变患者进行^18F-FDG PET双时相显像（早注射FDG后50-60 min行早期显像,注射后120-150min行延迟显像）,测定两次显像病灶的标准摄取值（standard uptake value,SUV）,并计算SUV变化率（ΔSUV）。结果胰腺癌组SUV早期显像=4.63±2.09,SUV延迟显像=5.86±2.74,ΔSUV=（24.76±15.58）%,差异有显著性（t=7.94,P〈0.01）。而胰腺良性病变SUV早期显像=2.48±0.95,SUV延迟显像=2.81±1.18,ΔSUV=（12.66±20.97）%,差异有显著性（t=2.67,P〈0.05）,且胰腺癌组SUV延迟显像明显高于良性病变组（t=2.25,P〈0.05）。结论胰腺恶性病变SUV延迟显像升高的幅度高于良性病变,但黏液腺癌SUV延迟显像升高的幅度低于良性病变,总体而言,双时相显像方法简便,在临床上具有一定的实用价值。     

Clinical value of F-FDG PET/CT in assessing suspicious relapse after rectal cancer resection

AIM: To evaluate the value of ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (¹⁸F-FDG PET/CT) in the restaging of resected rectal cancer.METHODS: From January 2007 to Sep 2008, 21 patients who had undergone curative surgery resection for rectal carcinoma with suspicious relapse in conventional imaging or clinical findings were retrospectively enrolled in our study. The patients underwent 28 PET/CT scans (two patients had two scans, one patient had three and one had four scans). Locoregional recurrences and/or distant metastases were confirmed by histological analysis or clinical and imaging follow-up.RESULTS: Final diagnosis was confirmed by histopathological diagnosis in 12 patients (57.1%) and by clinical and imaging follow-up in nine patients (42.9%). Eight patients had extrapelvic metastases with no evidence of pelvic recurrence. Seven patients had both pelvic recurrence and extrapelvic metastases, and two patients had pelvic recurrence only. ¹⁸F-FDG PET/CT was negative in two patients and positive in 19 patients. ¹⁸F-FDG PET/CT was true positive in 17 patients and false positive in two. The accuracy of ¹⁸F-FDG PET/CT was 90.5%, negative predictive value was 100%, and positive predictive value was 89.5%. Five patients with perirectal recurrence underwent ¹⁸F-FDG PET/CT image guided tissue core biopsy. ¹⁸F-FDG PET/CT also guided surgical resection of pulmonary metastases in three patients and monitored the response to salvage chemotherapy and/or radiotherapy in four patients.CONCLUSION: ¹⁸F-FDG PET/CT is useful for evaluating suspicious locoregional recurrence and distant metastases in the restaging of rectal cancer after curative resection.     

The value of (18)F-FDG PET/CT for the detection of distant metastases in high-risk patients with head and neck squamous cell carcinoma

The aims of this study were to assess a cohort of patients with head and neck squamous cell carcinoma (HNSCC) for: (1) the prevalence of synchronous distant metastases (DM) as detected by the initial staging by using (18)F-FDG PET/CT, (2) the prevalence of metachronous DM, and (3) the validity of published risk factors with special emphasis on the maximum standardized uptake value (SUV max) for the prediction of DM. Two hundred and ninety nine patients with advanced HNSCC were included. Following risk factors at the time of diagnosis and during follow-up were analyzed: advanced T/N stage, poor histological differentiation, level IV/Vb lymph nodes, primary site in the larynx/hypopharynx, and SUV max. The prevalence of DM at initial staging and during follow-up was 10% and 11%, respectively. At initial staging, primary site in the larynx/hypopharynx and neck nodes in level IV/Vb, and during follow-up only level IV/Vb nodes achieved statistical significance. The sensitivity for (18)F-FDG PET/CT with regard to the detection of DM was 96.8%, the specificity 95.4%, the positive predictive value (PV) 69.8%, and the negative PV 99.6%. Patients without DM showed a significantly better overall survival (OS) than patients developing DM (p<0.001). There was no significant difference in OS with regard to the time of diagnosis of DM. The prevalence for synchronous and metachronous DM in advanced HNSCC is considerable. (18)F-FDG PET/CT is highly accurate for initial staging and follow-up. DM carries a bad prognosis regardless of the time of diagnosis.     

Early diagnosis of recurrent hepatocellular carcinoma with 18F-FDG PET after radiofrequency ablation therapy

The aim of this study was to evaluate the role of positron emission tomography (PET) with 18F-fluoro-2-deoxy-D-glucose (18F-FDG) in the restaging of hepatocellular carcinoma (HCC) treated with radiofrequency ablation (RFA). This study was performed on 33 lesions in 24 patients with HCC. 18F-FDG PET and computed tomography (CT) studies were performed in all patients before treatment. PET acquisition was started 50-60 min after injection of 18F-FDG (5-6 MBq/kg). Semi-quantitative analysis using Standardized Uptake Value (SUV) was measured for the evaluation of tumour 18F-FDG uptake. All patients underwent RFA treatment and were followed up at least 2 years with 18F-FDG PET, CT and clinical evaluation in the interval of every 3 months in the first year and every 6 months in the second year. 18F-FDG PET detected recurrence earlier than CT between 4-6 months in 2 patients and between 7-9 months in 6 patients whereas CT was positive in 4 patients. Overall detection rate of recurrence with 18F-FDG PET was 92% which was higher than that of CT (75%). Statistically significant difference in the SUV was observed between well and moderately differentiated HCC (p=0.033) and also between well and poorly differentiated HCC (p=0.037). The size of tumours showed a significant correlation with the time of recurrence (p<0.00033, r=0.8601, n=12). The results of this study indicate that 18F-FDG PET could detect recurrence earlier in patients with HCC treated with RFA, as compared with CT and could diagnose extrahepatic lesions. SUV showed a significant correlation with time of recurrence after RFA. 18F-FDG PET may be a dominant imaging modality as a follow-up procedure of HCC after RFA, in terms of early detection of recurrence.     

18F-FDG PET-CT双时相显像对非小细胞肺癌肺门纵隔淋巴结转移的诊断价值

目的 探讨18F-FDG PET-CT双时相显像对非小细胞肺癌(NSCLC)肺门、纵隔淋巴结转移的诊断价值.方法 选取经病理确诊拟行手术治疗的NSCLC患者46例,术前行18F-FDG PET-CT常规全身显像和胸部延迟显像,计算标准摄取值(SUV)和储留指数(RI).结果46例患者共切取584枚肺门及纵隔淋巴结,术后病理显示,有31例患者的134枚淋巴结出现转移,而常规显像淋巴结转移为189枚,双时相显像为161枚.双时相显像诊断淋巴结转移的敏感度、特异度、准确度、阳性预测值和阴性预测值分别为94.8%、92.2%、92.8%、78.9%和98.1%,高于常规显像时的指标(87.3%、84.0%、84.8%、61.9%和95.7%).结论 18F-FDG PET-CT双时相显像诊断NSCLC肺门、纵隔淋巴结转移具有较高的敏感度、特异度和准确度,可为NSCLC的诊断、分期和治疗提供更多有价值的信息.     

18F-FDG PET/CT和MRI及血浆EB病毒水平对鼻咽癌局部复发的诊断价值研究

  目的  比较18F-FDG PET/CT、MRI在鼻咽癌局部复发和放疗后改变的鉴别诊断中的应用价值,并确定更合适的SUV_max诊断阈值,探索血浆EBV-DNA在发现鼻咽癌复发转移方面的意义。  方法  选取2015年1月至2020年2月期间放疗结束至少6个月后在福建省肿瘤医院进行复查的鼻咽癌患者208例,均进行MRI、PET/CT及EB病毒DNA检查（均在1个月内完成）。以活检病理结果或影像学的密切随访（至少1年）作为诊断鼻咽癌是否局部复发的标准,对患者的影像检查结果及相关参数进行比较分析。  结果  共有83例患者确诊为鼻咽癌局部复发,125例确诊为无局部复发,后者中77例伴有区域复发和（或）远处转移。PET/CT和MRI对鼻咽癌局部复发的诊断敏感性、特异性、准确性分别为89.2% vs. 67.5%,90.4% vs. 92.0%,89.9% vs. 82.2%。当诊断临界值SUV_max=3.85时,PET/CT的诊断准确性最高,与SUV_max=2.5相比,特异性（89.6% vs. 68.0%）和准确性（89.4% vs. 78.4%）均有显著提升。对纳入患者中治疗失败患者的EB病毒DNA分析发现,局部复发患者的血浆EBV-DNA检测敏感性低于区域复发或远处转移患者。局部复发肿瘤患者的SUV_max值与血浆EBV-DNA存在相关性。  结论  18F-FDG PET/CT对鼻咽癌局部复发和放疗后改变的鉴别诊断效能优于MRI。SUV_max诊断阈值设为3.85时可获得更好的诊断效能。血浆EBV-DNA检测在鼻咽癌区域复发和远处转移方面较灵敏,局部复发者的阳性率并不高,对这部分患者的诊断价值仅提供参考。      

18F-FDG PET/CT联合血清肿瘤标志物对肺部病变的诊断价值

目的:评估18F-FDG PET/CT联合血清肿瘤标志物对肺部病变的诊断价值。方法:回顾性分析2013年9月至2016年1月因肺部病变在本院行18F-FDG PET/CT显像,并在显像2周内行血清肿瘤标志物细胞角蛋白19片段（CYFRA21-1）、神经元特异性烯醇化酶（NSE）、癌胚抗原（CEA）检测的135例患者的临床资料,比较PET/CT和血清肿瘤标志物对肺部病变的诊断价值。结果:在灵敏性、准确性和阴性预测值方面,PET/CT的诊断价值明显高于单项血清肿瘤标志物及其联合组（P=0.000）。在特异性方面,PET/CT的诊断价值低于CEA（P<0.05）,与其他各组比较无明显统计学差异（P>0.05）。在阳性预测值方面,PET/CT与各血清肿瘤标志物之间无明显统计学差异（P>0.05）。结论:18F-FDG PET/CT具有很高的灵敏度,而血清肿瘤标志物特异度较高,因此,将二者结合进行综合分析有助于提高18F-FDG PET/CT的诊断信心和准确率。