肝细胞癌TACE术后病灶存活或复发18F-FDGPET/CT和增强CT诊断价值Meta分析

目的采用Meta分析方法评价¹⁸F-脱氧葡萄糖正电子发射计算机体层摄影(¹⁸F-FDG PET/CT)和增强CT(CECT)诊断经导管肝动脉化疗栓塞术(TACE)术后存活或复发病灶的临床价值。方法根据PRISMA报告规范开展Meta分析。检索PubMed、Embase、Cochrane Library、Web of Science、中国知网、万方和维普数据库中¹⁸F-FDG PET/CT和CECT诊断TACE术后存活或复发病灶的临床研究,时间至2019-04。由2位研究人员独立筛选文献、提取资料,根据诊断准确性研究质量评价工具-2(QUADAS-2)评价纳入研究的偏倚风险后,采用Stata 12.0软件进行Meta分析,计算其汇总敏感度(Sen)和特异度(Spe),绘制受试者工作特征曲线(SROC)并计算曲线下面积(AUC)。结果共纳入10篇¹⁸F-FDG PET/CT及13篇CECT诊断TACE术后存活或复发病灶的原始研究,分别包括322例患者的467个病灶和748例患者的943个病灶。Meta分析显示,¹⁸F-FDG PET/CT诊断TACE术后存活或复发病灶的Sen=0.92(95%CI为0.87~0.94)、Spe=0.95(95%CI为0.82~0.99)、AUC=0.97(95%CI为0.93~0.99);CECT诊断TACE术后存活或复发病灶的Sen=0.72(95%CI为0.66~0.78)、Spe=0.99(95%CI为0.93~1.00)、AUC=0.87(95%CI为0.83~0.89)。此外,CECT诊断TACE术后存活或复发Sen(Z=2.34,P=0.02)和AUC(Z=2.21,P=0.03)值低于¹⁸F-FDG PET/CT,差异有统计学意义。结论相比于CECT,¹⁸F-FDG PET/CT对TACE术后存活或复发病灶具有较高诊断效能,可视为TACE术后存活或复发病灶有效的影像学诊断方法。     

PET/CT对宫颈癌淋巴结转移诊断价值的Meta分析

目的 采用Meta分析方法评价PET/CT在宫颈癌淋巴结转移诊断中的临床价值。方法 计算机检索PubMed、Web of Science、Cochrane Library、Embase.com、维普、万方、中国期刊全文数据库、中国生物医学文献数据库,并辅以手工检索,检索日期截止2013年7月11日,获取PET/CT诊断宫颈癌淋巴结转移的相关文献。2名研究者严格按照纳入排除标准独立地筛选文献、提取资料,依据QUADAS（quality assessment of diagnostic accuracy studies）工具进行文献质量评价,用Meta-Disc 1.4和Stata 12.0软件对其敏感度（SEN）、特异性（SPE）、阳性似然比（+LR）、阴性似然比（-LR）、诊断比值比（DOR）进行合并分析,并进行异质性检验,绘制综合受试者工作特征曲线（SROC）,并计算曲线下面积（AUR）。结果 检索获得1 006条记录,最终纳入26篇文献,其中英文文献23篇,中文文献3篇。Meta分析结果显示：SEN合并、SPE合并、+LR合并、-LR合并、DOR、AUROC,验前概率和验后概率分别为0.73（95%CI：0.70~0.76）、0.96（95%CI：0.95~0.96）,7.86(95%CI：5.30~11.65)、0.35（95%CI：0.28~0.45）、31.63（95%CI：17.17~58.25）、0.92（95%CI：0.89~0.94）、20%和73%。结论 PET/CT对比手术后病理诊断宫颈癌淋巴结转移有中度的敏感度和较好的特异性,可作为宫颈癌淋巴结转移的诊断方法之一。     

18FDG PET/PET-CT诊断局部复发性结直肠癌价值的系统评价

 目的
系统评价¹⁸FDG PET/PET-CT 诊断局部复发性结直肠癌的临床价值。
方法
计算机检索Pubmed、Embase、SCI、CBM和Medion数据库，检索时间截至2011年7月，搜集¹⁸FDG PET/PET-CT诊断局部复发性结直肠癌的文献。由2位研究者根据纳入与排除标准独立筛选文献、提取资料和评价质量后，采用Stata10.1软件deeks法绘制漏斗图，MetaDiSc1.4软件进行Meta分析，计算合并敏感度，特异性，阳性似然比，阴性似然比及诊断比。绘制SROC曲线，计算曲线下面积（AUC）与Q值。
结果
最终纳入22个研究。汇总SROC曲线下面积及Q值分别为0.978，0.933。Meta分析结果显示敏感度0.944 (95% CI：0.918~0.964, I²=0)、诊断比208.670 (95% CI：109.56~397.44, I²=23.5%) 和阴性似然比0.084 (95% CI：0.060~0.119, I²=0) 同质性较好，特异性和阳性似然比存在异质性。根据森林图直接合并同质研究和Meta回归分析后再行同质研究合并分别得到特异性和阳性似然比0.986 (95% CI：0.975~0.993,I²=15%)，34.903 (95% CI：21.321~57.126,I²=0)；0.981 (95% CI：0.968~0.989,I²=55.5%)，27.937 (95%CI：15.953~48.926,I²=25.5%)。
结论
¹⁸FDG PET/PET-CT可作为敏感度及特异性均较高的影像工具用于局部复发性结直肠癌的诊断。     

18F-FDG PET/CT纹理特征联合LMR对Ⅰb～Ⅱb期宫颈癌盆腔淋巴结转移的预测价值分析

目的 探讨¹⁸F氟脱氧葡萄糖正电子发射断层显像(¹⁸F-FDG PET/CT)纹理特征联合淋巴细胞与单核细胞比值(LMR)预测Ⅰb～Ⅱb期宫颈癌盆腔淋巴结转移的价值。方法 根据分期指南选择66例病理诊断为宫颈磷癌(Ⅰb～Ⅱb期)的患者,术前完成¹⁸F-FDG PET/CT检查。提取其原发病灶图像纹理特征,用ROC曲线评价联合检测对宫颈癌盆腔淋巴结转移的预测价值。结果 淋巴结转移组与无淋巴结转移组患者FIGO分期、肿瘤分化、宫颈癌基质浸润深度、肿瘤直径、血清SCC-Ag含量、宫旁浸润、LMR差异有统计学意义(P<0.05)。根据Spearman相关系数分析,LMR与患者淋巴结转移呈负相关性(P<0.05)。PET/CT纹理特征对淋巴结转移有良好预测价值,通过LASSO算法set.seed降维分析和多元回归分析中得出,偏度可以在单个纹理特征中最有代表作为淋巴结转移的预测指标(P<0.05)。联合预测优于单独纹理特征或LMR预测盆腔淋巴结转移(P<0.05)。结论 ¹⁸F-FDG ...     

18F-FDGPET/CT在肺癌诊断中的假阳性与假阴性及主要原因

肺癌居癌症发病的首位,其发病率逐年上升,对人类健康造成极大的威胁,因此早期诊断肺癌并给予及时的治疗显得尤为重要。近年来,分子代谢显像技术¹⁸氟-脱氧葡萄糖-PET/CT(¹⁸F-FDG PET/CT)广泛应用于临床,对于恶性病变的诊断有着其他影像手段不可替代的作用,但是由于¹⁸F-FDG(¹⁸F标记的氟脱氧葡萄糖)不是肿瘤特异性显像剂,出现假阳性与假阴性的情况甚多。本文综述¹⁸F-FDG PET/CT在肺癌应用中出现假阳性与假阴性的主要表现以及主要原因。     

18 F-PSMA-1007 PET/CT在初诊前列腺癌精准评估中的价值及对临床治疗决策的影响

背景与目的： ¹⁸ F-前列腺特异性膜抗原（prostate-specific membrane antigen,PSMA）-1007 PET/CT是目前针对前列腺癌（prostate cancer,PCa）的先进影像学评估方法。探讨 ¹⁸ F-PSMA-1007 PET/CT在初诊PCa中对原发灶和转移灶精准诊断的价值及对临床治疗决策的影响。方法：回顾性分析2018年11月—2019年2月在四川省肿瘤医院确诊并行 ¹⁸ F-PSMA-1007PET/CT检查的18例未治疗PCa患者的临床资料,由核医学医师对PET/CT图像进行盲法阅片分析。采用感兴趣区方法半定量计算肿瘤放射性摄取,以最大标准化摄取值（maximum standardized uptake value,SUV max ）表示。评价 ¹⁸ F-PSMA-1007PET/CT对PCa原发灶和远处转移灶的诊断效能,以及对临床治疗决策的影响,并比较PCa组织放射性摄取与PSA及Gleason评分的相关性。结果： ¹⁸ F-PSMA-1007 PET/CT准确诊断了全部18例PCa,肿瘤组织呈局灶性放射性摄取,灵敏度、阳性预测值和准确率均为100%。发现无转移5例（27.8%）,转移13例（72.2%）,其中10例淋巴结转移（包括4例单纯盆腔淋巴结转移和6例腹膜后等区域外淋巴结转移）,10例骨转移,3例内脏（肺）转移,7例（38.9%）符合高肿瘤负荷PCa。18例PCa患者的前列腺原发灶的中位SUV _max 为13.05,PSA和Gleason评分均与SUV _max 没有显著相关性（P＞0.05）。临床治疗策略方面,除1例患者（合并原发性肺癌）放弃治疗,最终有8例改变了原治疗方案,改变方案率为47.1%（8/17）。结论：¹⁸ F-PSMA-1007 PET/CT对PCa原发灶和转移灶均具有很好的诊断价值和诊断效能,有利于精准分期和对患者制订个体化的治疗方案,并显著影响临床治疗决策。     

核磁共振诊断直肠癌盆腔侧方淋巴结转移价值的Meta分析

目的系统评价磁共振成像(MRI)对直肠癌盆腔侧方淋巴结转移的诊断价值。方法计算机检索EMbase、PubMed、The Cochrane Library、CNKI和WanFang Data数据库,搜集磁共振诊断直肠癌盆腔侧方淋巴结转移的相关文献,检索时限均从建库至2019年3月。由两位研究者独立筛选文献、提取资料和评价偏倚风险后,采用Stata 15软件进行统计分析,计算其合并敏感度(Sen合并)、特异性(Spe合并)、诊断比值比(DOR)等,绘制汇总受试者工作特征(SROC)曲线并计算曲线下面积(AUC)。结果共纳入11个研究,包含1 059例患者。Meta分析结果显示,磁共振诊断侧方淋巴结转移的合并Sen、Spe、+LR、–LR、DOR分别为0.77(95%CI:0.38～0.88)、0.77(95%CI:0.69～0.83)、3.3(95%CI:2.4～4.5)、0.3(95%CI:0.23～0.41)、11(95%CI:6～18),SROC曲线下面积为0.83(95%CI:0.80～0.86)。结论以淋巴结短径为诊断标准,MRI诊断直肠癌侧方淋巴结转移的敏感度和特异性一般;但在...     

正电子发射计算机断层显像/计算机断层扫描对非小细胞肺癌淋巴结转移的诊断价值

目的 探讨电子发射计算机断层显像(PET)/计算机断层扫描(CT)对非小细胞肺癌(NSCLC)淋巴结转移的诊断价值.方法 选取104例NSCLC患者,术前分别给予增强CT扫描和PET/CT检查,将手术病理检查结果为金标准,比较PET/CT检查和增强CT扫描诊断NSCLC淋巴结转移的结果与手术病理检查结果的一致性,评估其对NSCLC淋巴结转移的诊断效能.结果 PET/CT检查结果显示,转移淋巴结SUVmax和淋巴结短径均明显高于非转移淋巴结(P﹤0.01);增强CT扫描结果显示,转移淋巴结碘浓度明显低于非转移淋巴结(P﹤0.01).增强CT扫描与PET/CT检查诊断NSCLC淋巴结转移的准确度分别为66.35％(69/104)、87.50％(91/104).PET/CT检查诊断NSCLC淋巴结转移的曲线下面积(AUC)为0.89(95％CI:0.76～0.93),高于增强CT的0.74(0.73～0.89).结论 PET/CT检查诊断NSCLC淋巴结转移的效能较高,可为合理制订治疗计划提供参考依据.     

68Ga-PSMA PET/CT在前列腺癌复发中的应用进展

 前列腺癌（prostate cancer, PCa）发病率高,根治性治疗后,复发病灶的早期诊断对患者的预后至关重要。前列腺特异性膜抗原（prostate specific membrane antigen,PSMA）是一种在PCa中高表达的跨膜糖蛋白,利用核素⁶⁸Ga标记其小分子抑制剂作为显像剂,进行PET/CT显像,可以得到反映PCa病灶在体内分布的影像。欧美很多国家已经将68Ga-PSMA PET/CT应用于寻找PCa患者复发病灶,并取得了很好的效果,该技术在我国还处于起步阶段。本文综述了多个有关⁶⁸Ga-PSMA PET/CT在前列腺癌复发中的研究进展,旨在提高我们对该项新技术的认识水平。     

18F-FDG PET/CT全身显像诊断结直肠癌术后复发和转移的价值研究

目的探讨¹⁸F-FDG PET/CT全身显像诊断结直肠癌术后复发和转移的临床价值。方法选取2017年4月至2019年6月间辽宁省健康产业集团抚矿总医院收治的行结直肠癌术的80例结直肠癌患者,均采用¹⁸F-FDG PET/CT全身显像检查及CT强化检查,以病理活检结果或再次手术为诊断金标准,比较以上两种诊断方式对患者术后复发及转移的准确度、敏感度及特异度。结果¹⁸F-FDG PET/CT全身显像检查术后复发的准确度为97.5%(78/80),敏感度为92.0%(23/25),特异度为100.0%(55/55);CT增强扫描检查术后复发的准确度为86.3%(69/80),敏感度为64.0%(16/25),特异度为96.4%(53/55)。¹⁸F-FDG PET/CT对术后复发的诊断准确度和敏感度均高于CT增强扫描,差异均有统计学意义(均P<0.05),两者诊断特异度比较,差异无统计学意义(P>0.05)。¹⁸F-FDG PET/CT全身显像检查术后转移的准确度为96.3%(77/80),敏感度为95.3%(41/43),特异度为97.3%(36/37);CT增强扫描检查术后复发的准确度为75.0%(60/80),敏感度为69.8%(30/43),特异度为81.1%(30/37)。¹⁸F-FDG PET/CT对术后转移的诊断准确度、敏感度及特异度均高于CT增强扫描,差异均有统计学意义(均P<0.05)。结论¹⁸F-FDG PET/CT全身显像诊断结直肠癌术后患者复发的准确度及敏感度较高,诊断术后转移的准确度、敏感度及特异度均较高,有较好的临床应用价值。     

Diagnostic Performance of PET/MRI in Breast Cancer: A Systematic Review and Bayesian Bivariate Meta-analysis

IntroductionBy performing a systematic review and meta-analysis, the diagnostic value of ¹⁸F-FDG PET/MRI in breast lesions, lymph nodes, and distant metastases was assessed, and the merits and demerits of PET/MRI in the application of breast cancer were comprehensively reviewed.MethodsBreast cancer-related studies using ¹⁸F-FDG PET/MRI as a diagnostic tool published before September 12, 2022 were included. The pooled sensitivity, specificity, log diagnostic odds ratio (LDOR), and area under the curve (AUC) were calculated using Bayesian bivariate meta-analysis in a lesion-based and patient-based manner.ResultsWe ultimately included 24 studies (including 1723 patients). Whether on a lesion-based or patient-based analysis, PET/MRI showed superior overall pooled sensitivity (0.95 [95% CI: 0.92-0.98] & 0.93 [95% CI: 0.88-0.98]), specificity (0.94 [95% CI: 0.90-0.97] & 0.94 [95% CI: 0.92-0.97]), LDOR (5.79 [95% CI: 4.95-6.86] & 5.64 [95% CI: 4.58-7.03]) and AUC (0.98 [95% CI: 0.94-0.99] & 0.98[95% CI: 0.92-0.99]) for diagnostic applications in breast cancer. In the specific subgroup analysis, PET/MRI had high pooled sensitivity and specificity for the diagnosis of breast lesions and distant metastatic lesions and was especially excellent for bone lesions. PET/MRI performed poorly for diagnosing axillary lymph nodes but was better than for lymph nodes at other sites (pooled sensitivity, specificity, LDOR, AUC: 0.86 vs. 0.58, 0.90 vs. 0.82, 4.09 vs. 1.98, 0.89 vs. 0.84).Conclusion¹⁸F-FDG PET/MRI performed excellently in diagnosing breast lesions and distant metastases. It can be applied to the initial diagnosis of suspicious breast lesions, accurate staging of breast cancer patients, and accurate restaging of patients with suspected recurrence.     

18FDG-PET/CT for the detection of regional nodal metastasis in patients with primary head and neck cancer before treatment: A meta-analysis

BackgroundWe performed a meta-analysis to evaluate the role of ¹⁸F-fluorodeoxyglucose positron emission tomography/computed tomography (¹⁸FDG-PET/CT) in the detection of regional nodal metastasis in patients with primary head and neck cancer before treatment.Materials and methodsStudies about ¹⁸FDG-PET/CT for the detection of regional nodal metastasis in patients with primary HNC were systematically searched in the MEDLINE, EMBASE, and EBM Review databases from January 1, 2000 to July 25, 2012. A software called “Stata 12.0” was used to obtain pooled estimates of sensitivity, specificity, positive likelihood ratio, and negative likelihood ratio for PET/CT. We also calculated hierarchic summary receiver operating characteristic (HSROC) curves and area under the curves.Results14 articles (742 patients) fulfilled all inclusion criteria. The pooled sensitivity, and specificity with 95% confidence interval for PET/CT on a per-neck-side analysis were 0.84 (0.77–0.89) and 0.84 (0.78–0.89). The corresponding values for PET/CT on a per-nodal-level analysis 0.84 (0.78–0.88) and 0.96 (0.94–0.98).Conclusions¹⁸FDG-PET/CT had good diagnostic performance for the detection of regional nodal metastasis in patients with primary head and neck cancer before treatment.     

Performance of Indocyanine Green Fluorescence for Detecting Lymph Node Metastasis in Prostate Cancer: A Systematic Review and Meta-analysis

Purpose: The use of sentinel lymph node dissection in several cancers has been gaining attention with the emergence of indocyanine green fluorescence. We performed a meta-analysis to assess the diagnostic performance of indocyanine green fluorescence in detecting lymph node metastasis in prostate cancer patients.Methods: A literature search was conducted using PubMed, Cochrane Library, and SCOPUS on November 30, 2020, to identify eligible studies. Studies were eligible if they investigated the diagnostic performance of indocyanine green fluorescence before pelvic lymph node dissection in prostate cancer patients and reported the number of true positives, false positives, false negatives, and true negatives on lymph node–based analysis in comparison to histopathologic findings in the dissected specimen.Results: Our systematic review covered 11 studies published between 2011 and 2020, with 519 patients, and our meta-analysis included 9 studies with 479 patients. Based on lymph node analysis of indocyanine green fluorescence, the results showed pooled sensitivity and specificity at 0.75 (95% confidence interval [CI] 0.49 to 0.90) and 0.66 (95% CI 0.61 to 0.70), respectively. The diagnostic odds ratio was 6.0 (95%CI 2 to 21). Several lymphatic drainage routes also showed sentinel lymph nodes localized outside the ordinal pelvic lymph node template.Conclusions: We noted relatively low diagnostic performance for lymph node metastasis, suggesting that indocyanine fluorescence may not currently be a viable alternative to pelvic lymph node dissection in prostate cancer patients. However, this technique shows novel lymphatic drainage routes and underscores the importance of lymph nodes not removed in ordinary dissection.     

Diagnostic value of FDG-PET in recurrent colorectal carcinoma: a meta-analysis

Accurate detection of recurrent colorectal carcinoma remains a diagnostic challenge. The purposes of this study were to evaluate the diagnostic value of Positron emission tomography (PET) using fluor-18-deoxyglucose (FDG) in recurrent colorectal carcinoma with a meta-analysis. All the published studies in English relating the diagnostic value of FDG-PET in the detection of recurrent colorectal carcinoma were collected. Methodological quality of the included studies was evaluated. Pooled sensitivity, specificity and diagnostic odds ratio and SROC (summary receiver operating characteristic curves) were obtained by the statistical software. Twenty-seven studies were included in the meta-analysis. The pooled sensitivity and specificity for FDG-PET detecting distant metastasis or whole body involvement in recurrent colorectal carcinoma were 0.91 (95% CI 0.88-0.92) and 0.83 (95% CI 0.79-0.87), respectively. The pooled sensitivity and specificity for FDG-PET detecting hepatic metastasis were 0.97 (95% CI 0.95-0.98) and 0.98 (95% CI 0.97-0.99). The pooled sensitivity and specificity for pelvic metastasis or local regional recurrence were 0.94 (95% CI 0.91-0.97) and 0.94 (95% CI 0.92-0.96). FDG-PET is valuable for the assessment of recurrent colorectal carcinoma.     

Diagnostic value of fluorine 18 fluorodeoxyglucose positron emission tomography/computed tomography for the detection of metastases in non–small‐cell lung cancer patients

In the recent years, fluorine 18 fluorodeoxyglucose (¹⁸F‐FDG) positron emission tomography (PET)/computed tomography (CT) has emerged as a new modality for staging non–small‐cell lung cancer (NSCLC) patients. The aim of this meta‐analysis was to assess the diagnostic value of ¹⁸F‐FDG PET/CT in detecting metastatic lesions in NSCLC patients. Meta‐analysis methods were used to pool sensitivity, specificity, positive and negative likehood ratios, diagnostic odd ratios and to construct a summary receiver‐operating characteristic curve. Data from included studies were pooled to compare the diagnostic accuracy between PET/CT and PET or CT alone in nodal staging. Totally, 56 studies involving 8,699 patients met the inclusion criteria. The pooled sensitivities and specificities of ¹⁸F‐FDG PET/CT were 0.72 [95% confidence interval (CI): 0.65–0.78] and 0.91 (95% CI: 0.86–0.94) in determining mediastinal nodal staging; 0.71 (95% CI: 0.60–0.80) and 0.83 (95% CI: 0.77–0.88) in intrathoracic staging; 0.78 (95% CI: 0.64–0.87) and 0.90 (95% CI: 0.84–0.94) in intrathoracic staging on a per‐node basis. For detecting extrathoracic metastases, the pooled sensitivities and specificities of ¹⁸F‐FDG PET/CT were 0.77 (95% CI: 0.47–0.93) and 0.95 (95% CI: 0.92–0.97) for all extrathoracic metastases; 0.91 (95% CI: 0.80–0.97) and 0.98 (95% CI: 0.94–0.99) for bone metastases. ¹⁸F‐FDG PET/CT is beneficial in detecting lymph node metastases and extrathoracic metastases although PET/CT showed low sensitivity in detecting brain metastases. ¹⁸F‐FDG PET/CT confers significantly higher sensitivity and specificity than contrast‐enhanced CT (both p < 0.01) and higher sensitivity than ¹⁸F‐FDG PET in staging NSCLC (p < 0.05).     

Diagnostic Value of Endorectal Ultrasound in Preoperative Assessment of Lymph Node Involvement in Colorectal Cancer: a Meta-analysis

Background: Nodal invasion by colorectal cancer is a critical determinant in estimating patient survival and inchoosing appropriate preoperative treatment. The present meta-analysis was designed to evaluate the diagnosticvalue of endorectal ultrasound (EUS) in preoperative assessment of lymph node involvement in colorectal cancer.Materials and Methods: We systematically searched PubMed, Web of Science, Embase, and China NationalKnowledge Infrastructure (CNKI) databases for relevant studies published on or before December 10th, 2014.The sensitivity, specificity, likelihood ratios, diagnostic odds ratio (DOR) and area under the summary receiveroperating characteristics curve (AUC) were assessed to estimate the diagnostic value of EUS. Subgroup analysisand meta-regression were performed to explore heterogeneity across studies. Results: Thirty-three studiescovering 3,016 subjects were included. The pooled sensitivity and specificity were 0.69 (95%CI: 0.63-0.75) and0.77 (95%CI: 0.73-0.82), respectively. The positive and negative likelihood ratios were 3.09 (95%CI: 2.52-3.78)and 0.39 (95%CI: 0.32-0.48), respectively. The DOR was 7.84 (95%CI: 5.56-11.08), and AUC was 0.80 (95%CI:0.77-0.84). Conclusions: This meta-analysis indicated that EUS has moderate diagnostic value in preoperativeassessment of lymph node involvement in colorectal cancer. Further refinements in technology and diagnosticcriteria are necessary to improve the diagnostic accuracy of EUS.     

前列腺特异性膜抗原PET/CT对中高危前列腺癌初始TNM分期及临床治疗策略的影响

  目的  评估前列腺特异性膜抗原（prostate-specific membrane antigen,PSMA）正电子发射计算机断层显像（positron emission tomography/computed tomography,PET/CT）对中高危前列腺癌初始临床分期及治疗策略的影响。  方法  回顾性分析2019年10月至2021年11月63例于重庆大学附属肿瘤医院初诊的中高危前列腺癌患者的临床及影像资料。比较PSMA PET/CT和传统影像学对前列腺癌病灶检出率及TNM分期的差异,评估PSMA PET/CT对治疗计划的影响。  结果  PSMA PET/CT对区域外淋巴结和骨转移的检出率分别为23.81%（15/63）和52.38%（33/63）,较传统影像学的检出率3.17%（2/63）和25.40%（16/63）高,差异具有统计学意义（均P<0.001）。PSMA PET/CT检查后53.97%（34/63）患者TNM分期发生改变,N、M分期上调（均P<0.05）;22.22%（14/63）患者的治疗计划发生改变。  结论  PSMA PET/CT检查后上调中高危前列腺癌初始TNM分期中的N、M分期,导致超过20%患者临床治疗策略发生改变。PSMA PET/CT可成为精准评估中高危前列腺癌肿瘤负荷的首选影像学检查。