^ 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.     

^18F-FDGPET／CT显像对宫颈癌诊断及治疗的影响

目的研究^18F-FDGPET／CT显像在宫颈癌诊断、分期及指导治疗方面的应用价值。方法88例患者行腹部或全身^18F-FDGPET／CT显像,其中初诊者30例（宫颈良性病变11例,宫颈癌19例）,宫颈癌治疗后58例。病灶确诊根据病理结果、多种影像诊断技术及临床随访而定,随访时间均大于6个月。结果30例初诊者PET／CT诊断宫颈癌的灵敏度、特异性和准确性分别为89．5％,90．9％和90．0％。58例治疗后患者中,11例存在肿瘤复发或残余,PET／CT诊断肿瘤复发、残余的灵敏度、特异性和准确性分别为90．9％,100．0％和98．3％。41例有肿瘤转移,PET／CT诊断转移灶的灵敏度、特异性和准确性分别为92．7％,88．9％和90．9％。77例宫颈癌患者中26．8％PET／CT发现直径小于1．0cm的小淋巴结转移灶、28．6％因PET／CT发现腹腔外远处转移灶而提高了临床分期,32．4％患者因PET／CT显像而改变和修改了原治疗方案。18例输尿管梗阻患者中,16例PET／CT发现为肿瘤侵犯压迫所致而促使临床及时地进行了输尿管内置管,减少了肾功能的损害。结论^18F-FDGPET／CT显像可提高宫颈癌诊断准确性,使治疗方案的制定更科学。     

全身^18F-FDGPET／PET-CT在脑转移瘤寻找原发灶中的诊断价值

背景与目的：恶性肿瘤发生颅内转移十分常见，据统计其发生率约占颅内肿瘤的5％—20％。本文总结因脑转移瘤查原发灶的62例患者的原发灶发现情况及全身转移灶情况，旨在评价全身^18F-FDG PET／PET-CT在脑转移瘤寻找原发灶中的诊断价值。方法：对62例因脑转移瘤查找原发灶为主诉的肿瘤患者进行了回顾性分析。结果：本组62例患者中52例患者的原发灶位置得到了确诊，原发灶的检出率为83．8％(52／62)，其中原发性肺癌占55．7％(29／52)，所有肺癌中低分化腺癌占44．8％(13／29)。除可检出原发灶外，^18F-FDGPET／PET-CT全身显像还检出肺转移、淋巴结转移、骨转移、肝转移及其它少见部位的转移灶。全身行^18F-FDG PET-CT扫描对肿瘤原发灶的检出率为84．6％；行全身^18F-FDG PET扫描对肿瘤原发灶的检出率为82．6％；与^18F-FDG PET-CT相比，^18F-FDG PET图像对肺转移病灶的检出率仅为10．9％。结论：^18F-FDGPET／PET-CT的全身扫描有利于发现原发灶及其他转移灶。对恶性肿瘤发现方面具有重要的临床实用价值，     

^18F-FDG PET显像在食管癌诊断中的临床意义

目的：探讨正电子发射型电子计算机断层(positron emission computed tomography，PET)显像在食管癌早期诊断以及临床分期中的临床应用价值。方法：23例食管癌患者，进行全身^18F-脱氧葡萄糖(^18F-fluorodeoxy-glucose，^18F-FDG)PET显像，并与外科手术或内镜活检病理结果和CT检查结果对照。结果：46倒患者中PET显像食管部位均有异常放射性浓聚灶，经病理确诊，46处食管浓聚灶均为食管癌原发病灶。其中28例为单发病灶，2例为食管多发灶，其余16例除食管原发病灶外，还有其他部位32个病灶，经临床和病理证实为远处转移病灶。与46例PET显像前CT结果相比较，PET共检出食管部位恶性病灶46例，检出率为100．0％，而CT仪检出34例，检出率为73．9％。46例中确诊有其他部位转移者18例，PET检出18例，检出率为100．0％，而PET显像前CT仅检出6例，检出率为33．3％。27例手术治疗者PET分期与临床病理分期一致，而常规检查对食管癌临床分期高估5例，低估12例，PET显像改变了这17例患者的临床治疗方案。结论：^18F-FDG-PET显像对食管癌的诊断、淋巴结和远处转移的分期、治疗方案的制定有重要的临床应用价值。     

非小细胞肺癌纵膈淋巴结影像学分期的研究

目的：评估常见影像学检查对NSCLC纵膈淋巴结分期的准确性及价值。方法：56例经手术和病理检查确诊的NSCLC,术前患经胸部CT扫描、全身^18F—FDG PET显像和经食管超声检查,并对手术病理结果进行回颐性的分析：结果：所有56例NSCLC患肺部及相应转移部位^18F-FDG摄取增高,PET检查对预测NSCLC纵膈淋巴结转移的灵敏度为84％,特异性为90％,CT扫描纵膈淋巴结转移的灵敏度为57％,特异性为82％,其中38例行经食管超声解剖显像纵膈淋巴结转移的灵敏度为76％,特异性为70％.PET对NSCLC纵膈淋巴结转移的预测优于胸部CT解剖显像和经食管超声解剖显像。结论：应用^18F—FDG PET在对NSCLC的术前分期明显优于CT和经食管超声等常规检查,但PET在精确定位方面仍然需要结合解剖显像检查,PET—CT等图像融合技术等是今后发展的方向。     

^18F-FDG PET／CT与双侧髂棘穿刺活检在弥漫大B细胞淋巴瘤骨髓浸润中诊断价值

[目的]比较^18F-FDG PET／CT显像与双侧髂棘穿刺活检在弥漫大B细胞淋巴瘤（DL—BCL）骨髓浸润的诊断价值。[方法]收集我中心2005年7月～2007年6月81例初诊DLBCL患者，所有患者均行^18F-FDG PET／CT显像及双侧髂棘穿刺活检，其中9例患者PET／CT指导下行其它部位骨髓FDG高代谢灶穿刺活检。[结果]81例初诊DLBCL患者中，共20例确诊伴有骨髓浸润。^18F-FDG PET／CT显像见23例骨髓代谢活跃灶，其中17例病理确诊骨髓浸润；双侧髂棘穿刺活检11例患者确诊骨髓浸润。^18F-FDG PET／CT显像诊断骨髓浸润的阳性率为85％（17／20），双侧髂棘穿刺活检诊断骨髓浸润的阳性率为55％（11／20），差异有显著性（P〈0．05）。[结论]^18F—FDG PET／CT显像可以全面评价骨髓状况，较双侧髂棘穿刺活检能发现更多的骨髓浸润患者和更多的病灶；在骨髓代谢活跃部位穿刺活检，可提高穿刺的准确率。     

18F-FDGPET/CT全身显像对乳腺癌复发和转移诊断价值分析

目的:探讨18F-FDG PET/CT全身显像对治疗后乳腺癌复发和转移的诊断价值。方法:回顾性分析山东省肿瘤医院2004-12-01-2009-12-31行18F-FDG PET/CT显像检查的乳腺癌患者142例,统计18F-FDG PET/CT显像诊断的灵敏度、特异性和准确性,并与增强CT及全身骨扫描进行对比。结果:18F-FDG PET/CT和增强CT对乳腺癌复发和转移的灵敏度分别为85.5%(71/83)和77.1%(64/83),特异性分别为88.1%(52/59)和84.7%(50/59),准确性分别为86.6%(123/142)和80.3%(114/142)。18F-FDG PET/CT诊断淋巴结转移的阳性率为89.5%(34/38),高于增强CT的73.7%(28/38),P=0.031;对于局部复发、肺转移、肝转移和脑转移的诊断,18F-FDG PET/CT和增强CT差异无统计学意义;对于骨转移的诊断,18F-FDG PET/CT的灵敏度为70.0%,全身骨扫描为90.0%,两者的特异性分别为100.0%和58.3%。结论:18F-FDG PET/CT显像对治疗后乳腺癌复发和转移诊断具有较高的灵敏度和特异性,但对于不同部位转移灶的诊断应合理选择检查方法。     

18F-FDG PET显像在食管癌诊断中的临床意义

目的探讨正电子发射型电子计算机断层(positron emission computed tomography,PET)显像在食管癌早期诊断以及临床分期中的临床应用价值.方法23例食管癌患者,进行全身18F-脱氧葡萄糖(18F-fluoro-deoxy-glucose,18F-FDG ) PET显像,并与外科手术或内镜活检病理结果和CT检查结果对照.结果46例患者中PET显像食管部位均有异常放射性浓聚灶,经病理确诊,46处食管浓聚灶均为食管癌原发病灶.其中28例为单发病灶,2例为食管多发灶,其余16例除食管原发病灶外,还有其他部位32个病灶,经临床和病理证实为远处转移病灶.与46例PET显像前CT结果相比较,PET共检出食管部位恶性病灶46例,检出率为100.0%,而CT仅检出34例,检出率为73.9%.46例中确诊有其他部位转移者18例,PET检出18例,检出率为100.0%,而PET显像前CT仅检出6例,检出率为33.3%.27例手术治疗者PET分期与临床病理分期一致,而常规检查对食管癌临床分期高估5例,低估12例,PET显像改变了这17例患者的临床治疗方案.结论18F-FDG PET显像对食管癌的诊断、淋巴结和远处转移的分期、治疗方案的制定有重要的临床应用价值.     

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.     

18F-FDG PET/CT显像在胃癌诊断中的应用

[目的]评价18F-FDG PET/CT显像在胃癌诊断中的应用.[方法]49例经胃镜和病理确诊的胃癌患者进行18F-FDG PET/CT显像,其诊断结果与病理学检查、其他影像学检查及临床随访比较.[结果] 49例患者18F-FDG PET/CT阳性44例,阳性率89.8％;39例有淋巴结转移患者中18F-FDGPET/CT显像发现32例,灵敏度为82.1％(32/39); 12例有远处转移患者中18F-FDG PET/CT显像发现11例,灵敏度91.6％(11/12).[结论]18F-FDG PET/CT显像对胃癌原发灶、淋巴结转移和远处转移具有较高的灵敏度,18F-FDG PET/CT显像在胃癌诊断中具有较高的临床价值.     

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.     

Value of18F-FDG PET in clinical staging of non-small cell lung cancer

Objective

To evaluate the feasibility of¹⁸F-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 by¹⁸F-FDG PET before radiotherapy. The results of the¹⁸F-FDG PET examination were compared with those of CT.

Results

The staging was changed in 38 patients because of¹⁸F-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 I 10.0% (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.     

Clinical impact of (18)F fluorodeoxyglucose positron emission tomography in patients with non-small-cell lung cancer: a prospective study.

PURPOSE: To prospectively study the impact of (18)F fluorodeoxyglucose (FDG) positron emission tomography (PET) on clinical management of patients with non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS: One hundred five consecutive patients with NSCLC undergoing (18)F FDG PET were analyzed. Before PET, referring physicians recorded scan indication, conventional clinical stage, and proposed treatment plan. PET scan results were reported in conjunction with available clinical and imaging data, including results of computed tomography (CT). Subsequent management and appropriateness of PET-induced changes were assessed by follow-up for at least 6 months or until the patient's death. RESULTS: Indications for PET were primary staging (n = 59), restaging (n = 34), and suspected malignancy subsequently proven to be NSCLC (n = 12). In 27 (26%) of 105 of cases, PET results led to a change from curative to palliative therapy by upstaging disease extent. Validity of the PET result was established in all but one case. PET appropriately downstaged 10 of 16 patients initially planned for palliative therapy, allowing either potentially curative treatment (four patients) or no treatment (six patients). PET influenced the radiation delivery in 22 (65%) of 34 patients who subsequently received radical radiotherapy. Twelve patients considered probably inoperable on conventional imaging studies were downstaged by PET and underwent potentially curative surgery. PET missed only one primary tumor (5-mm scar carcinoma). CT and PET understaged three of 20 surgical patients (two with N1 lesions < 5 mm and one with unrecognized atrial involvement), and PET missed one small intrapulmonary metastasis apparent on CT. No pathological N2 disease was missed on PET. CONCLUSION: FDG PET scanning changed or influenced management decisions in 70 patients (67%) with NSCLC. Patients were frequently spared unnecessary treatment, and management was more appropriately targeted.     

18F-FDGPET—CT诊断NSCLC骨转移中的应用价值

目的评价18F—FDGPET—CT在检测NSCLC骨转移中的应用价值。方法回顾性分析18F-FDGPET．CT扫描的NSCLC患者362例,按颈椎、胸椎、腰椎、骶尾椎、骨盆、肩胛骨和锁骨、长骨、胸骨、肋骨及颅骨将机体骨骼分为10个区域,比较同机CT、PET及PET—CT诊断骨转移的敏感性、特异性及准确率。结果共有82例患者的331个区域被确诊为骨转移。PET—CT诊断NSCLC患者骨转移的敏感性、特异性和准确率分别为93．9％,98．9％和97．8％,高于同机CT和PET的74．4％,90．7％,87．0％和84．1％,93．2％,91．2％（P均〈0．05）。PET—CT诊断病灶骨转移的敏感性、特异性和准确性分别为98．8％、98．6％和98．7％,显著高于同机CT的79．5％、87．9％、84．5％和PET的94．3％、89．2％、91．2％,P均〈0．05。结论18F-FDGPET—CT在诊断NSCLC骨转移中优于同机CT和18F—FDGPET,对NSCLC的临床分期及治疗计划确定具有重要价值。     

Role of 18F-FDG PET for evaluating malignant pleural mesothelioma

Malignant Pleural Mesothelioma (MPM) is a relatively rare neoplasia characterized by a poor prognosis. Recent studies show that new therapeutic approaches can lead to an improvement in life quality and to a prolonged survival; therefore, proper evaluation of MPM before, as well as after, therapy, is needed. The aim of this study was to evaluate the impact of 18F-FDG photon emission tomography (PET) scan compared to computed tomography (CT) findings in patients affected by MPM, whether untreated or already treated. We studied 15 consecutive patients (13 male and 2 female) with a histological diagnosis of MPM, with a mean age of 69.9 years (range: 38-78 years old) and a recent total-body CT scan. Five (5) patients were studied for staging, while 10 patients were studied after therapy. An FDG PET scan was carried out 60 minutes after an intravenous (i.v.) injection of 370 MBq of 18F-FDG. For each patient, we compared the PET stage to the CT stage, and evaluated the role of PET in choosing a therapeutic approach. In 9 of 15 (60%) patients, there was no difference between the PET and the CT stage. In 2 of 15 (13%) patients, PET upstaged the disease, while in 4 of 15 (27%) patients PET downstaged MPM. According to these results, patient management was changed in 3 cases. Specifically, 1 patient was excluded from surgery, and 2 patients had different chemotherapy. These data suggest that PET is useful in the evaluation of MPM, giving additional data that can clarify doubtful CT findings, especially regarding lymph node involvement and distant lesions. In conclusion, FDG PET was found to play a worth-while role in patient management.     

F-18 fluorodeoxyglucose positron emission tomography staging in radical radiotherapy candidates with nonsmall cell lung carcinoma: powerful correlation with survival and high impact on treatment

BACKGROUND: Successful treatment of nonsmall cell lung carcinoma (NSCLC) with radical radiotherapy (RT) requires accurate delineation of tumor extent. Conventional computed tomography-based noninvasive staging often estimates intrathoracic thoracic tumor extent incorrectly and fails to detect distant metastasis. High sensitivity and specificity are reported for F-18 fluorodeoxyglucose (FDG) positron emission tomography (PET) staging in potentially resectable NSCLC. The authors investigated FDG-PET staging in radical RT candidates with unresectable NSCLC. METHODS: The authors prospectively studied 153 consecutive patients with unresectable NSCLC who were candidates for radical RT after conventional staging and had PET scans. Patients were allocated both "before PET" and "after PET" stages. Subsequent management was recorded. Survival analysis was used to compare validity of pre-PET and post-PET staging. RESULTS: After PET, 107 patients (70%) actually received radical therapies (radical RT with or without concurrent chemotherapy, n = 102; radical surgery, n = 5); 46 patients (30%) received palliative treatment because of PET-detected distant metastasis (n = 28; 18%) or extensive locoregional disease (n = 18; 12%). Palliative therapies were RT (n = 33), chemotherapy (n = 12), or supportive care (n = 1). All five surgically treated patients underwent potentially curative resections after downstaging by PET. For radically treated patients, post-PET stage (P = 0.0041) but not pre-PET stage (P = 0.19) was strongly associated with survival. Radically treated patients survived longer than those treated palliatively (P = 0.02; 1-year survival, 69% and 44%, respectively; 2-year survival, 44% radical; no palliative patients had 2-yr follow-up). CONCLUSIONS: Positron emission tomography-assisted staging detected unsuspected metastasis in 20%, strongly influenced choice of treatment strategy, frequently impacted RT planning, and was a powerful predictor of survival. Potential impact of FDG-PET is even greater in radical RT candidates with NSCLC than in surgical candidates.     

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.     

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.