18F-FDG PET显像在非小细胞肺癌临床分期中的价值

目的 探讨^18F-脱氧葡萄糖-正电子发射体层显像(^18F-FDG PET)在非小细胞肺癌(NscLC)临床分期中的价值。方法 105例NSCLC患者于放射治疗前行^18F-FDG PET检查,进行PET分期,并将PET分期和CT分期结果进行比较分析。结果 ^18F-FDG PET扫描使38例NSCLC患者分期改变,其中分期升级31例,分期降级7例。21例分期升级者PET检查发现了远处转移灶,其治疗方案由根治性治疗改为姑息性治疗;6例分期降级者进行了根治性手术治疗,其中5例PET分期与病理分期一致。PET发现远处转移灶的几率随PET扫描前分期的升级而上升,其中Ⅰ期10．0％(2／20),Ⅱ期14．3％(3／21),Ⅲ期25．0％(16／64)。结论 ^18F-FDG PET显像改变了36．2％(38／105)NSCLC患者的临床分期,影响了其治疗策略。^18F-FDG PET显像对NSCLC患者的临床分期有重要的参考价值。     

Value of 18F-FDG PET in Clinical Staging of Non-Small Cell Lung Cancer

OBJECTIVE To evaluate the feasibility of 18F-deoxyglucose positron emission tomography (18F-FDG PET) in the staging of non-small cell lung cancer(NSCLC).METHODS 105 patients with NSCLC had been examined by 18F-FDG PET before radiotherapy. The results of the 18F-FDG PET examination were compared with those of CT:RESULTS The staging was changed in 38 patients because of 18F-FDG PET findings, with PET resulting in upstaging in 31 patients and downstaging in seven patients. Because of distant metastasis detected by PET, 21 patients received palliative treatment. Six of the seven downstaged patients underwent radical surgery, among which the PET findings were concordant with the pathological findings in five patients. Distant metastasis detected by PET elevated the pre-PET stage: at stage 110.0% (2/20), stage Ⅱ 14.3% (3/21 ) and stage Ⅲ 25.0% (16/64), respectively.CONCLUSION 18F-FDG PET, by changing clinical staging in 36.2% (38/105)of NSCLC patients, has an impact on treatment strategy in NSCLC patients.     

18FDG PET/CT标准摄取值与非小细胞肺癌临床分期关系的研究

目的:探讨非小细胞肺癌(non-small cell lung cancer,NSCLC)患者治疗前的18氟脱氧葡萄糖(18F-deoxyglucose,18 FDG) PET／CT标准摄取值(standard uptake value, SUV)与临床分期、原发肿瘤大小及病理学类型的关系。方法:对75例治疗前的NSCLC患者接受18FDG PET／CT检查获得最高SUV (SUVmax)。分析SUVmax与临床分期、原发肿瘤分期、肿瘤大小和病理学类型的关系,并研究SUV在四者组内差异是否有统计学意义。结果:SUVmax与临床分期和原发肿瘤大小均呈正相关(r=0．279,P=0．014;r= 0．645,P=0．001),与肿瘤病理学类型无关(r=-0．077,P=0．507);SUV在两组不同大小肿瘤组(≤3．0 cm和>3．0 cm)间差异有统计学意义,t=-0．647,P=0．015,在各个临床分期组(ⅠA～ⅡB、ⅢA和m B～Ⅳ)间差异有统计学意义,F=3．807,P=0．027,在4个原发肿瘤分期组(T1、T2、T3和T4)间差异有统计学意义,F=8．025,P=0．022,而在不同病理学类型组(鳞癌、腺癌和腺鳞癌)间差异无统计学意义,F=1．911,P=0．155。结论:18FDG PET／CT SUV随肿瘤大小和病期的增加呈升高趋势,可以作为评价NSCLC临床分期的辅助手段,但不能为无法取得病理学诊断的患者提供帮助。     

Preliminary PET/CT study of 18F-FDG uptake in cervical and supraclavicular brown adipose tissue

Objective  The clinical use of PET/CT in oncology has led to the realization that ¹⁸F-FDG uptake in brown adipose tissue (BAT) can be a common cause of potentially misleading false-positive PET scans. The goal of this study was to study ¹⁸F-FDG uptake in cervical and supraclavicular regions and its characteristics with PET/CT. Methods  All the PET/CT scans obtained at our institution from July 2007 to January 2008 were retrospectively reviewed for increased ¹⁸F-FDG uptake in BAT. The cases in which increased ¹⁸F-FDG in cervical and supraclavicular regions was not localized to a soft-tissue mass or lymph node or muscle on the CT images, were included in this study. The following features were recorded: body weight, body mass index (BMI) and maximal standardized uptake value (SUVmax). In these selected patients, the BAT uptake in other area of the body was also recorded. Results  PET/CT scans were obtained in 457 patients (259 males and 198 females). In all of the scans, cervical and supraclavicular BAT uptake was observed in 12 patients (2 males and 10 females) and was typically bilateral, symmetric and intense. The range of the SUVmax was 3.6∼12.82 (mean 6.9 ± 2.6). BAT uptake was more common in females than in males, showing a significant difference (P = 0.004). Although ¹⁸F-FDG uptake in BAT occurred more often in underweight patients with low BMI, there was no difference in the body weight (P = 0.607) or BMI (P = 0.491) of these patients with hypermetabolic BAT compared with controls. Conclusion  Hypermetabolic BAT uptake can be localized in cervical and supraclavicular regions with it occurring more commonly in females compared to males. Knowledge of this potential pitfall with PET/CT is important in improving diagnostic interpretation and accurate staging.     

18F-FDG PET对老年人大肠癌分期、术后再分期临床诊断的价值

目的:评价18F-FDG PET对老年人大肠癌分期、术后再分期的临床价值。方法:36例经肠镜检查初步诊断为结、直肠癌的老年患者行全身18F-FDG PET检查,并在2周内完成手术及病理诊断。结果:36例病理证实为结、直肠癌,34例局部18F-FDG摄取增高,SUVmax6.931,(最大Standard Uptake Value);18F-FDGPET对肿瘤原发灶诊断准确率94.4%(34/36);局部淋巴结转移的检出率为66.7%(16/24);治疗方案改变36.1%(13/36)。随访50例老年结、直肠癌患者,26例PET阳性并证实发现局部和/或多发转移;24例PET显示阴性,其中6例随访2年后复发,阴性预测率75%。结论:18F-FDG PET显像对老年人大肠癌的分期、术后再分期诊断有较高的临床价值。     

18F-FDG PET图像纹理分析在非小细胞肺癌中的应用

目的 18F-FDG PET图像纹理分析作为一种新兴研究方法,用于量化肿瘤内放射性摄取的空间分布异质性,进而了解肿瘤的生物学特征.本研究总结18 F-FDG PET图像纹理分析在非小细胞肺癌(non-small cell lung cancer,NSCLC)中的研究进展,探究18F-FDG PET图像纹理分析在NSCLC中的应用价值.方法 应用PubMed和CNKI期刊全文数据库检索系统,以FDG PET,NSCLC,肿瘤异质性,纹理分析为关键词,检索2007-01-2016-10有关18F-FDG PET图像异质性分析的文章.纳入标准:(1)18F-FDG PET图像的异质性分析;(2)18F-FDG PET图像纹理分析在NSCLC中的应用;(3)18F-FDG PET图像纹理分析的影响因素.根据纳入标准,最后纳入分析31篇文献.结果 18F-FDG PET图像纹理分析在NSCLC的诊断、分期、疗效预测及患者预后方面有一定应用价值,由于18F-FDG PET图像纹理分析的影响因素较多,需进一步研究来明确各影响因素对各种纹理参数测量的影响及其程度.结论 18F-FDG PET图像纹理分析在NSCLC中的应用日益广泛,如何得到具有良好预测价值和可重复性的纹理参数是今后的研究方向.     

18F-FDG PET/CT对原发性乳腺癌诊断和淋巴结分期的临床价值

目的评价18F-脱氧葡萄糖(18F-FDG)PET/CT对原发性乳腺癌诊断和淋巴结分期的临床价值。方法临床拟诊为乳腺癌的27例女性患者,手术前分别行乳腺钼靶X线和18F-FDG PET/CT检查。全部患者均行手术治疗,共切除32个病灶。23例患者接受了腋淋巴结廓清术,并行病理学诊断。结果32个病灶中,25个为乳腺癌病灶,7个为良性病变。18F-FDG PET/CT诊断的敏感度为80.0%,特异度为71.4%。T1期病灶8个,PET/CT诊断阳性6个;T2期病灶14个,PET/CT诊断阳性12个;T3期病灶2个,PET/CT均诊断阳性。对区域淋巴结转移,PET/CT诊断的敏感度为60.0%,特异度为84.6%,诊断准确度为73.9%。结论对于怀疑多中心乳癌、病期较晚、需要全面评价区域淋巴结状态或疑有远处转移的患者,PET/CT具有优势,对乳腺癌的分期有重要帮助,但尚不适宜于作为乳腺癌的常规检查。     

肺癌18F-FDG PET/CT SUVmax值与临床因素及肿瘤标志物相关性研究

目的 原发肿块最大标准化摄取值(maximal standard uptake value,SUVmax)为PET/CT常用的半定量指标,被广泛用于肿瘤的诊断与治疗评估.本研究探讨肺癌1SF-FDG PET/CT的SUVmax值与临床各因素及肿瘤标志物的相关性,为肺癌临床诊断和治疗提供依据.方法 回顾性分析2014-01-09--2015-03-17山东省肿瘤医院收治82例肺癌患者(腺癌32例,鳞癌19例,小细胞癌12例,混合型肺癌5例,类癌4例,大细胞癌4例,未分类癌6例)治疗前PET/CT影像资料及相关的临床资料,探讨18F-FDG PET/CT的SUVmax值与病理分型、性别、年龄、淋巴结转移及肿瘤标志物的相关性.结果 腺癌SUVmax均值为9.65±6.02,显著低于小细胞肺癌的14.20±5.33,差异有统计学意义,P＜0.05;细胞角蛋白19片段(cytokeratin fragmet antigen21-1,CYFRA21-1)升高组、神经元特异性烯醇化酶(neuron-specific enolase,NSE)升高组SUVmax均值分别为13.16±5.99和14.09±6.05,均显著高于相应正常组的9.17±5.09和9.73±5.37,差异有统计学意义,P＜0.05;不同性别、有无淋巴结转移、癌胚抗原(careino-embryonic antigen,CEA)是否升高之间,SUVmax均值差异均无统计学意义,P＞0.05.相关性分析显示,SUVmax与年龄、病灶大小均无相关性;与NSE呈低度相关,r=0.361,P=0.003.结论 肺癌18F-FDG PET/CT的原发肿块SUVmax值与病理类型、CYFRA21-1和NSE有关.肺腺癌患者SUVmax均值低于小细胞肺癌,CYFRA21-1和NSE升高组SUVmax均值升高,SUVmax与NSE水平呈低度相关.     

18F-FDG PET/CT在鼻咽癌诊断及分期中的临床价值

背景与目的:PET/CT能够通过准确显示肿瘤形态、大小及相邻关系从而对鼻咽癌(NPC)进行诊断及分期研究.本研究结合PET/CT、MRI结果及部分颈部小淋巴结病理结果,探讨18SF-FDG PET/CT在鼻咽癌TNM分期中的价值.方法:从2005年9月至2007年3月.选取行PET/CT和MRI检查的鼻咽癌患者68例.PET数据采用2D采集模式,CT扫描电压140 kV,采用自动毫安量跟踪扫描加血管增强的扫描方案,18F-FDG按3.7～5.5 MBq/kg剂量静脉注射.MRI检查采用T1W和T2W成像及T1W增强扫描成像.并对其中10例患者颈部小淋巴结切除和穿刺组织病理检查,进行图像与病理对照.结果:68例鼻咽癌患者所有鼻咽区域的病灶PET/CT均可以清晰显示,MRI和PET/CT显示病灶一致:对于直径≤1 cm的138枚PET/CT示阳性小淋巴结,MRI仅有约28%可作不肯定提示.10例鼻咽癌患者颈部16枚PET/CT显示阳性小淋巴结与病理结果相符14枚,符合率达87.5%.对于颈部肿大淋巴结PET/CT.和MRI均能显示,对部分放疗过程PET/CT示增殖活性明显受抑制的肿大淋巴结,MRI和PET/CT增强扫描可见强化.对于其中8例Ⅳb期鼻咽癌患者肺、骨、肝脏等转移灶,PET/CT全身扫描可清晰显示病灶,而MRI具有较多限制.由于18F-FDG PET/CT检查使其中24例的分期进行调整.结论:18F-FDG-PET/CT扫描采用自动毫安量跟踪扫描加血管增强的扫描方案,充分利用PET/CT信息进行鼻咽癌的临床分期,其结果较MRI全面、可靠.     

Mediastinal nodal staging of nonsmall cell lung cancer using integrated 18F-FDG PET/CT in a tuberculosis-endemic country: diagnostic efficacy in 674 patients

BACKGROUND: Integrated (18)fluorine fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) has shown somewhat variable sensitivity and specificity for mediastinal nodal staging in granulomatous disease endemic areas. The purpose of the study was to prospectively evaluate the efficacy of PET/CT for mediastinal nodal staging in nonsmall cell lung cancer (NSCLC) patients in a tuberculosis-endemic country. METHODS: Prospective assessment of the diagnostic efficacy of integrated PET/CT for detecting mediastinal nodal metastasis was performed in 674 patients (M:F ratio = 502:172; mean age, 61 years) with NSCLC. Patients underwent an integrated PET/CT examination and subsequent surgical nodal staging (by mediastinoscopy only in 121 patients and by thoracotomy in 553). Nodes showing greater (18)F-FDG uptake than mediastinum at PET without benign calcification or high attenuation >70 household unit (HU) at unenhanced CT were regarded as being positive for malignancy. The histologic nodal assessment results were used as reference standards. RESULTS: Of 2477 mediastinal nodal stations evaluated in 674 patients, 275 (11%) stations in 180 (27%) patients proved to be malignant. On a per-person basis, the overall sensitivity, specificity, and accuracy of PET/CT for mediastinal nodal staging were 61% (110 of 180), 96% (473 of 494), and 86% (583 of 674), respectively. On a per-nodal station basis, they were 46% (126 of 275), 98% (2154 of 2202), and 92% (2280 of 2477). CONCLUSIONS: Integrated PET/CT provides high specificity and reasonably high accuracy, but somewhat low sensitivity for mediastinal nodal staging of NSCLCs. The high specificity is achieved at the expense of sensitivity by interpreting calcified nodes or nodes with high attenuation at CT, even with high FDG uptake at PET, as benign in a tuberculosis-endemic region.     

^18F-FDG PET/CT双时相显像鉴别诊断肺良恶性病变的临床研究

[目的]探讨18F-FDGPET/CT双时相显像鉴别诊断肺良恶性病变的临床价值。[方法]65例肺病变患者（80个病灶）行18F-FDGPET/CT双时相显像,计算最大标准化摄取值SUVmax及早期、延迟显像SUVmax的变化幅度（ΔSUVmax）,并与病理及随访结果对比。利用ROC曲线计算SUVmax和ΔSUVmax诊断肺病变的最佳阈值。比较PET/CT与PET及CT的诊断效能。[结果]（1）65例共计80个肺内结节中良性结节38个,恶性结节42个。恶性结节组早期相SUVmax值为5.35（4.6）,高于良性结节组的1.75（2.0）,差异有统计学意义（Z=-4.846,P=0.0001）。恶性结节组双时相ΔSUVmax值为30.54（2.0）,高于良性结节组的16.84（2.0）,差异有统计学意义（Z=-2.861,P=0.0042）。（2）ROC分析显示早期显像SUVmax值〉2.45和双时相显像ΔSUVmax值〉24.66%是两者鉴别诊断肺良恶性结节时的最佳阈值。早期相SUVmax值〉2.45诊断肺恶性病变的灵敏度、特异性、准确率、阳性预测值和阴性预测值分别为88.10%、63.16%、76.25%、72.55%、82.76%,双时相ΔSUVmax值〉24.66%时,分别为64.29%、71.05%、67.50%、71.05%、64.29%。（3）PET/CT诊断肺病变的准确率优于PET和CT（P〈0.05）,诊断灵敏度优于CT（P〈0.05）。[结论]18F-FDGPET/CT诊断肺恶性病变,早期相SUVmax值及双时相ΔSUVmax值的最佳阈值为〉2.45和〉24.66%;并需结合病灶CT形态学特征及临床病史进行综合诊断。     

18F-FDG PET/CT在非小细胞肺癌精确放疗中的应用

随着影像学和放射治疗技术的发展,肿瘤精确放疗已经实现.PET/CT在肿瘤诊疗中的地位已经确立,它对放疗靶区的勾画起到了巨大的作用,使我们从肿瘤组织结构靶区走向了"生物靶区",本文就18F-FDG PET/CT在非小细胞肺癌(NSCLC)精确放疗中的应用做一综述.     

FDG PET对非小细胞肺癌纵隔淋巴结分期的价值

目的 评价FDGPET显像对非小细胞肺癌(NSCLC)纵隔淋巴结分期的价值。方法 对70例经病理证实为NSCLC的病例进行FDGPET显像，以纵隔淋巴结FDG摄取增高及SUV≥2．5作为阳性判断标准，进行纵隔淋巴结分期，并与CT结果比较。结果 PET对纵隔淋巴结转移诊断的灵敏度、特异性和准确率分别为100％、93％和94％。且阳性淋巴结数目和部位与病理结果完全符合，使12例术前临床分期得以纠正。CT的灵敏度、特异性和准确率分别为70％、77％和76％。结论 PET对NSCLC纵隔淋巴结的准确分期有很高的应用价值，有助于指导临床治疗方案的制定。     

^ 18 F-FDGhPET/CT显像在非小细胞肺癌诊断与分期中的应用价值

目的 观察18F-FDG复合线路显像(hPET/CT)在非小细胞肺癌(NSCLC)综合治疗中对确定分期、界定靶区、决定治疗原则的应用价值.方法 对53例NSCLC患者于治疗前进行18F-FDGhPET/CT显像检查,分析比较18F-FDG分期和CT分期结果.结果 18F-FDG显像较CT多发现39个转移淋巴结,发现远处转移病灶22个;使28例患者临床分期发生改变,其中分期升级20例,分期降级8例.结论 "F-FDGhPET/CT显像对NSCLC的正确诊断分期,制定放疗计划,或指导肿瘤综合治疗原则有较好的指导意义.     

Feasibility of shrinking field radiation therapy through 18F-FDG PET/CT after 40 Gy for stage III non-small cell lung cancers

Objective: To explore the feasibility of shrinking field technique after 40 Gy radiation through 18F-FDG PET/CT during treatment for patients with stage Ⅲ non-small cell lung cancer (NSCLC). Methods: In 66 consecutivepatients with local-advanced NSCLC, 18F-FDG PET/CT scanning was performed prior to treatment and repeatedafter 40 Gy. Conventionally fractionated IMRT or CRT plans to a median total dose of 66Gy (range, 60-78Gy)were generated. The target volumes were delineated in composite images of CT and PET. Plan 1 was designedfor 40 Gy to the initial planning target volume (PTV) with a subsequent 20-28 Gy-boost to the shrunken PTV.Plan 2 was delivering the same dose to the initial PTV without shrinking field. Accumulated doses of normaltissues were calculated using deformable image registration during the treatment course. Results: The medianGTV and PTV reduction were 35% and 30% after 40 Gy treatment. Target volume reduction was correlatedwith chemotherapy and sex. In plan 2, delivering the same dose to the initial PTV could have only been achievedin 10 (15.2%) patients. Significant differences (p<0.05) were observed regarding doses to the lung, spinal cord,esophagus and heart. Conclusions: Radiotherapy adaptive to tumor shrinkage determined by repeated 18F-FDGPET/CT after 40 Gy during treatment course might be feasible to spare more normal tissues, and has the potentialto allow dose escalation and increased local control.     

氟脱氧葡萄糖PET在晚期非小细胞肺癌分期中的应用进展

肺癌是常见恶性肿瘤之一,近10年来其发病率和死亡率都呈明显增高趋势。肺癌生物学特性十分复杂,恶性程度高,约70%的患者在确诊时已属Ⅲ～Ⅳ期。对肺癌进行确切诊断并分期是选择合理治疗方案的前提,随着影像技术特别是氟脱氧葡萄糖正电子发射断层显像(fludeoxyglucosepositronemissiontomography,FDGPET)和相关研究的进展,晚期非小细胞肺癌的诊断策略和分期方法有所变化,并可能对患者的治疗方案和预后评估造成影响,比如,T3N0肿瘤归入ⅡB期而非Ⅲ期,原发瘤所在肺叶内出现卫星转移灶属于M1,即Ⅳ期。对于T、N分期,胸部X线和强化CT仍是最常用的检查手段,但CT扫描应达到足够范围,而FDGPET在探测淋巴结转移中具有独特优势。对于纵隔淋巴结转移的诊断,尤其是临床判断仍有手术指征的病例,纵隔镜仍是不可替代的金标准。对于远处转移及M分期的确定,即使其他各种影像学检查均无阳性发现,FDGPET仍是不可缺少的检查手段,临床检查的重点应包括骨、脑、肝和肾上腺等脏器,但对于难以确定的远处转移,尤其是临床判断有手术指征的病例,通过穿刺活检获得病理或细胞学诊断结果仍是非常重要的。     

Effect of (18)F-FDG PET/CT imaging in patients with clinical Stage II and III breast cancer

PURPOSE: To investigate the potential effect of using (18)F-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) in the initial assessment of patients with clinical Stage II or III breast cancer. METHODS AND MATERIALS: During 14 consecutive months, 39 patients (40 tumors) who presented with Stage II or III breast cancer on the basis of a routine extension assessment were prospectively included in this study. PET/CT was performed in addition to the initial assessment. RESULTS: In 3 cases, PET/CT showed extra-axillary lymph node involvement that had not been demonstrated with conventional techniques. Two of these patients had hypermetabolic lymph nodes in the subpectoral and infraclavicular regions, and the third had a hypermetabolic internal mammary node. PET/CT showed distant uptake in 4 women. Of these 4 women, 1 had pleural involvement and 3 had bone metastasis. Overall, of the 39 women, the PET/CT results modified the initial stage in 7 (18%). The modified staging altered the treatment plan for 5 patients (13%). It led to radiotherapy in 4 patients (bone metastasis, pleural lesion, subpectoral lymph nodes, and internal mammary nodes) and excision of, and radiotherapy to, the infraclavicular lymph nodes in 1 patient. CONCLUSIONS: PET/CT can provide information on extra-axillary lymph node involvement and can uncover occult distant metastases in a significant percentage of patients. Therefore, initial PET/CT could enable better treatment planning for patients with Stage II and III breast cancer.     

^18F-FDG PET-CT与肿瘤标志检测对肺癌诊断价值的分析

目的：分析^18F-FDG PET-CT和肿瘤标志对肺癌的诊断价值及SUVmax与临床病理参数的关系。方法：选取152例可疑肺癌的初治患者,治疗前分别行^18F-FDG PET-CT及神经元特异性烯醇化酶（NSE）、癌胚抗原（CEA）和细胞角蛋白片段（CYFRA21—1）检查,以细胞学或病理学结果为金标准分析^18F-FDG PET-CT和肿瘤标志的诊断价值。结果：152例患者中,肺癌患者134例。^18F-FDG PET-CT诊断肺癌的敏感性、特异性和准确性分别为96．27％、61．11％和92．11％;肿瘤标志的敏感性、特异性和准确性分别为87．31％、55．56％和81．41％,两者比较P值分别为0．008、1．000和0．024。在134例肺癌患者中,初步统计显示SUVmax与原发肿瘤大小有相关性（r=0．548,P=0．000）,SUVmax在不同病理类型之间差异无统计学意义,P=0．085,SUVmax与各肿瘤标志值无相关性。结论：SUVmax在一定程度上反映原发病灶大小,^18F-FDG PET-CT检查对肺癌诊断是一种灵敏可靠的方法,联合肿瘤标志综合分析能提高肺癌诊断的准确性,减少漏诊或误诊率。     

18F-FDG PET/CT在随访血清鳞状细胞癌抗原升高的宫颈癌中的应用

背景与目的:宫颈癌患者治疗后早期、正确诊断复发并积极治疗可改善预后.血清鳞状细胞癌抗原(squamous cell carcinoma antigen.SCCAg)是检测无症状复发性宫颈癌最常用的肿瘤标志物.研究表明,宫颈癌随访期间血清SCCAg升高提示肿瘤复发.但并非所有随访SCCAg升高的宫颈癌患者经体格检查及传统影像均能探测到复发病灶.本研究探讨18F-FDG PET/CT在宫颈癌随访血清SCCAg升高中的应用,评估SCCAg升高在官颈癌随访中的价值.方法:对宫颈癌随访血清SCCAg升高并在中山大学肿瘤防治中心行18F-FDG PET/CT显像检查的31例患者进行回顾性分析,记录患者的病理类型、随访SCCAg升高水平、PET/CT显像结果、其他影像检查结果、病理及临床随访结果.结果:31例患者均为宫颈鳞癌.包括3例鳞腺癌.所有患者均经PET/CT探测到病灶,PET/CT诊断宫体或阴道局部复发3例,转移28例;最终经病理或临床证实局部复发3例,转移27例,原发肺鳞癌1例;PET/CT探测恶性病变率为100%(31/31),诊断宫颈癌复发准确率为96.8%(30/31).随访血清SCCAg值为1.5～37.8 pg/L,SCCAg值与PET/CT病灶最大标准化摄取值(SUVmax)无相关性.与其他影像检查相比,PET/CT明显提高探测效率,发现更多的病灶.结论:宫颈癌治疗后随访血清SCCAg升高提示肿瘤复发,PET/CT能有效探测病灶,并具有较高的准确率.     

Role of (18)F-choline PET/CT in evaluation of patients with prostate carcinoma

Background

Choline presents a high affinity for malignant prostate tissue. It can be labelled with positron emitting ¹⁸F, and used for the evaluation of patients with prostate carcinoma by PET/CT imaging. The aim of this paper is to summarise our experience with fluoromethylcholine (¹⁸F-choline) PET/CT in patients with prostate cancer.

Methods

In 4 months we investigated the patients with histopathological (or cytological) confirmed prostate cancer. Two observers evaluated the early and late ¹⁸F-choline PET images in correlation with corresponding localising CT images and using the semiquantitative standard uptake value (SUV) calculation.

Results

The ¹⁸F-choline PET/CT was made in 50 patients with prostate cancer. There were 18 patients after radical prostatectomy and 32 without surgery. In all patients without surgery the pathological uptake was seen in the prostate. In 14 (44 %) patients of this group there was evidence of metastatic spread in local or distant lymph nodes and/or bones. In out of 18 patients after radical prostatectomy the local recurrence was detected in 6 patients (33%) and distant metastases were present in 2 patients (10%).

Conclusions

¹⁸F-choline PET/CT seems to be useful imaging modality in patients with prostate carcinoma; it can demonstrate spread of the disease preoperatively and detect the local recurrence after radical prostatectomy.