Hepatocellular carcinoma(HCC)is one of the leading causes of cancer mortality worldwide.Various imaging modalities provide important information about HCC for its clinical management.Since positron-emission tomography...Hepatocellular carcinoma(HCC)is one of the leading causes of cancer mortality worldwide.Various imaging modalities provide important information about HCC for its clinical management.Since positron-emission tomography(PET)or PET-computed tomography was introduced to the oncologic setting,it has played crucial roles in detecting,distinguishing,accurately staging,and evaluating local,residual,and recurrent HCC.PET imaging visualizes tissue metabolic information that is closely associated with treatment.Dynamic PET imaging and dual-tracer have emerged as complementary techniques that aid in various aspects of HCC diagnosis.The advent of new radiotracers and the development of immuno-PET and PET-magnetic resonance imaging have improved the ability to detect lesions and have made great progress in treatment surveillance.The current PET diagnostic capabilities for HCC and the supplementary techniques are reviewed herein.展开更多
Objective To observe the efficacy of deep learning(DL)model based on PET/CT and its combination with Cox proportional hazard model for predicting progressive disease(PD)of lung invasive adenocarcinoma within 5 years a...Objective To observe the efficacy of deep learning(DL)model based on PET/CT and its combination with Cox proportional hazard model for predicting progressive disease(PD)of lung invasive adenocarcinoma within 5 years after surgery.Methods The clinical,PET/CT and 5-year follow-up data of 250 patients with lung invasive adenocarcinoma were retrospectively analyzed.According to PD or not,the patients were divided into the PD group(n=71)and non-PD group(n=179).The basic data and PET/CT findings were compared between groups,among which the quantitative variables being significant different between groups were transformed to categorical variables using receiver operating characteristic(ROC)curve and corresponding cut-off value.Multivariant Cox proportional hazard model was used to select independent predicting factors of PD of lung invasive adenocarcinoma within 5 years after surgery.The patients were divided into training,validation and test sets at the ratio of 6∶2∶2,and PET/CT data in training set and validation set were used to train model and tuning parameters to build the PET/CT DL model,and the combination model was built in serial connection of DL model and the predictive factors.In test set,the efficacy of each model for predicting PD of lung invasive adenocarcinoma within 5 years after surgery was assessed and compared using the area under the curve(AUC).Results Patients'gender and smoking status,as well as the long diameter,SUV max and SUV mean of lesions measured on PET images,the long diameter,short diameter and type of lesions showed on CT were statistically different between groups(all P<0.05).Smoking(HR=1.787[1.053,3.031],P=0.031)and lesion SUV max>4.15(HR=5.249[1.062,25.945],P=0.042)were both predictors of PD of lung invasive adenocarcinoma within 5 years after surgery.In test set,the AUC of PET/CT DL model for predicting PD was 0.847,of the combination model was 0.890,of the latter was higher than of the former(P=0.036).Conclusion DL model based on PET/CT had high efficacy for predicting PD of lung invasive adenocarcinoma within 5 years after surgery.Combining with Cox proportional hazard model could further improve its predicting efficacy.展开更多
Introduction: The use of methotrexate (MTX) for rheumatoid arthritis (RA) is increasing. However, the immune suppression state leads to the occurrence of lymphoproliferative disorder (MTX-LPD). The purpose of this stu...Introduction: The use of methotrexate (MTX) for rheumatoid arthritis (RA) is increasing. However, the immune suppression state leads to the occurrence of lymphoproliferative disorder (MTX-LPD). The purpose of this study was to describe the findings of 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) in MTX-LPD patients, and compare it with non-MTX-related malignant lymphoma (ML). Materials and Methods: We retrospectively reviewed 11 MTX-LPD patients (9 female, mean age 68.3 years) and 21 ML patients (7 female, mean age 60.6 years) with a histopathological diagnosis. FDG-PET imaging was performed using a standard oncology procedure. We assessed the disease distribution based on FDG-PET images and measured the maximum standardized up take values (SUVmax) for each region. Results: Mean values of SUVmax in MTX-LPD and ML were 14.6 and 17.2, respectively (p = 0.49). In MTX-LPD, 55 lesions met the Cotswold classification, consisting of 37 nodal and 18 extranodal lesions. In ML, 82 lesions were found, consisting of 68 nodal and 14 extranodal lesions. MTX-LPD showed a higher incident of the involvement in extranodal lesions throughout the whole body (p < 0.001). Conclusion: Because this disease occurs widely throughout the whole body, we need to pay attention to the less frequent sites as well when performing PET imaging in patients with MTX-LPD.展开更多
目的:探讨^(68)Ga标记的成纤维细胞激活蛋白抑制剂(fibroblast activation protein inhibitor,FAPI)-04正电子发射断层显像/X线计算机体层成像(positron emission tomography and computed tomography,PET/CT)对初诊胰腺癌的诊断价值及...目的:探讨^(68)Ga标记的成纤维细胞激活蛋白抑制剂(fibroblast activation protein inhibitor,FAPI)-04正电子发射断层显像/X线计算机体层成像(positron emission tomography and computed tomography,PET/CT)对初诊胰腺癌的诊断价值及对肿瘤分期的影响。方法:回顾性收集2021年8月至2023年8月于重庆大学附属肿瘤医院就诊的134例因怀疑胰腺占位的患者临床及影像资料。分析^(68)Ga-FAPI-04 PET/CT对胰腺癌原发灶及转移灶的诊断价值;并与传统CT比较,分析^(68)Ga-FAPI-04 PET/CT对胰腺癌肿瘤分期的影响。结果:共计纳入134例患者,其中胰腺癌127例,良性病变7例。^(68)Ga-FAPI-04 PET/CT对胰腺癌原发灶、区域淋巴结及远处转移灶检出率分别为100%(127/127)、68.63%(35/51),95.35%(41/43)。胰腺癌中位最大标准化摄取值(standard uptake value maxium,SUVmax)为14.92,高于胰腺良性病变中位SUVmax(6.1)(Z=−2.921,P=0.003)。与传统CT比较,^(68)Ga-FAPI PET/CT检查后共有32.28%(41/127)胰腺癌患者TNM分期发生改变。3.94%(5/127)患者改变了治疗方案。结论:^(68)Ga-FAPI-04 PET/CT对胰腺癌原发灶诊断具有较高的敏感性,较传统CT可发现更多远处转移病灶,改善患者M分期,有助于全面评估全身肿瘤负荷、制定治疗计划。展开更多
BACKGROUND The prognostic value of preoperative fluorine-18-fluorodeoxyglucose positronemission tomography(18 F-FDG PET)scan for determining overall survival(OS)in breast cancer(BC)patients is controversial.AIM To eva...BACKGROUND The prognostic value of preoperative fluorine-18-fluorodeoxyglucose positronemission tomography(18 F-FDG PET)scan for determining overall survival(OS)in breast cancer(BC)patients is controversial.AIM To evaluate the OS predictive value of preoperative PET positivity after 15 years.METHODS We performed a retrospective search of the Universitair Ziekenhuis Brussel patient database for nonmetastatic patients who underwent preoperative PET between 2002-2008.PET positivity was determined by anatomical region of interest(AROI)findings for breast and axillary,sternal,and distant sites.The prognostic role of PET was examined as a qualitative binary factor(positive vs negative status)and as a continuous variable[maximum standard uptake value(SUVmax)]in multivariate survival analyses using Cox proportional hazards models.Among the 104 identified patients who received PET,36 were further analyzed for the SUVmax in the AROI.RESULTS Poor OS within the 15-year study period was predicted by PET-positive status for axillary(P=0.033),sternal(P=0.033),and combined PET-axillary/sternal(P=0.008)nodes.Poor disease-free survival was associated with PET-positive axillary status(P=0.040)and combined axillary/sternal status(P=0.023).Cox models confirmed the long-term prognostic value of combined PETaxillary/sternal status[hazard ratio(HR):3.08,95%confidence interval:1.42-6.69].SUVmax of ipsilateral breast and axilla as continuous covariates were significant predictors of long-term OS with HRs of 1.25(P=0.048)and 1.54(P=0.029),corresponding to relative increase in the risk of death of 25%and 54%per SUVmax unit,respectively.In addition,the ratio of the ipsilateral axillary SUVmax over the contralateral axillary SUVmax was the most significant OS predictor(P=0.027),with 1.94 HR,indicating a two-fold relative increase of mortality risk.CONCLUSION Preoperative PET is valuable for prediction of long-term survival.Ipsilateral axillary SUVmax ratio over the uninvolved side represents a new prognostic finding that warrants further investigation.展开更多
目的探讨多元化护理干预措施在老年肿瘤患者正电子发射型断层(PET)/X线计算机断层(CT)检查中的应用效果,为治疗该病症提供护理方法。方法选取2020年10月—2022年10月于西京医院收治的老年肿瘤患者81例,采用随机摸红蓝球的方式分为多元...目的探讨多元化护理干预措施在老年肿瘤患者正电子发射型断层(PET)/X线计算机断层(CT)检查中的应用效果,为治疗该病症提供护理方法。方法选取2020年10月—2022年10月于西京医院收治的老年肿瘤患者81例,采用随机摸红蓝球的方式分为多元化护理组(n=41,蓝球)和常规护理组(n=40,红球)。常规护理组接受常规护理干预,多元化护理组在常规护理组的基础上采用多元化护理干预,2组均干预2周。比较2组干预前后心理状态[采用综合性医院焦虑抑郁量表(Hospital Anxiety and Depression Scale,HADS)评估]评分;比较2组检查用时、检查中断率和重复检查率、PET/CT显像结果准确性、PET/CT显像优良率(以最终诊断为标准)及检查依从率。结果干预后,2组HADS评分中焦虑、抑郁和总分均较同组干预前降低,且多元化护理组评分低于常规护理组,差异均有统计学意义(P<0.05);检查后,多元化护理组检查用时、检查中断率、重复检查率均低于常规护理组(均P<0.05);多元化护理组检查依从率、PET/CT图像优级率均高于常规护理组(均P<0.05);2组PET/CT图像优良率和显像结果准确性差异无统计学意义(P>0.05)。结论多元化护理干预措施可能有效提高老年肿瘤患者PET/CT检查的依从率,减少外界因素对测量结果的影响,有助于改善患者检查期间的心理状态,具有一定的临床应用价值。展开更多
基金Supported by the National Natural Science Foundation of China,No.81760306the Basic Research on Application of Joint Special Funding of Science and Technology Department of Yunnan Province-Kunming Medical University,No.2018FE001(-291)
文摘Hepatocellular carcinoma(HCC)is one of the leading causes of cancer mortality worldwide.Various imaging modalities provide important information about HCC for its clinical management.Since positron-emission tomography(PET)or PET-computed tomography was introduced to the oncologic setting,it has played crucial roles in detecting,distinguishing,accurately staging,and evaluating local,residual,and recurrent HCC.PET imaging visualizes tissue metabolic information that is closely associated with treatment.Dynamic PET imaging and dual-tracer have emerged as complementary techniques that aid in various aspects of HCC diagnosis.The advent of new radiotracers and the development of immuno-PET and PET-magnetic resonance imaging have improved the ability to detect lesions and have made great progress in treatment surveillance.The current PET diagnostic capabilities for HCC and the supplementary techniques are reviewed herein.
文摘Objective To observe the efficacy of deep learning(DL)model based on PET/CT and its combination with Cox proportional hazard model for predicting progressive disease(PD)of lung invasive adenocarcinoma within 5 years after surgery.Methods The clinical,PET/CT and 5-year follow-up data of 250 patients with lung invasive adenocarcinoma were retrospectively analyzed.According to PD or not,the patients were divided into the PD group(n=71)and non-PD group(n=179).The basic data and PET/CT findings were compared between groups,among which the quantitative variables being significant different between groups were transformed to categorical variables using receiver operating characteristic(ROC)curve and corresponding cut-off value.Multivariant Cox proportional hazard model was used to select independent predicting factors of PD of lung invasive adenocarcinoma within 5 years after surgery.The patients were divided into training,validation and test sets at the ratio of 6∶2∶2,and PET/CT data in training set and validation set were used to train model and tuning parameters to build the PET/CT DL model,and the combination model was built in serial connection of DL model and the predictive factors.In test set,the efficacy of each model for predicting PD of lung invasive adenocarcinoma within 5 years after surgery was assessed and compared using the area under the curve(AUC).Results Patients'gender and smoking status,as well as the long diameter,SUV max and SUV mean of lesions measured on PET images,the long diameter,short diameter and type of lesions showed on CT were statistically different between groups(all P<0.05).Smoking(HR=1.787[1.053,3.031],P=0.031)and lesion SUV max>4.15(HR=5.249[1.062,25.945],P=0.042)were both predictors of PD of lung invasive adenocarcinoma within 5 years after surgery.In test set,the AUC of PET/CT DL model for predicting PD was 0.847,of the combination model was 0.890,of the latter was higher than of the former(P=0.036).Conclusion DL model based on PET/CT had high efficacy for predicting PD of lung invasive adenocarcinoma within 5 years after surgery.Combining with Cox proportional hazard model could further improve its predicting efficacy.
文摘Introduction: The use of methotrexate (MTX) for rheumatoid arthritis (RA) is increasing. However, the immune suppression state leads to the occurrence of lymphoproliferative disorder (MTX-LPD). The purpose of this study was to describe the findings of 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) in MTX-LPD patients, and compare it with non-MTX-related malignant lymphoma (ML). Materials and Methods: We retrospectively reviewed 11 MTX-LPD patients (9 female, mean age 68.3 years) and 21 ML patients (7 female, mean age 60.6 years) with a histopathological diagnosis. FDG-PET imaging was performed using a standard oncology procedure. We assessed the disease distribution based on FDG-PET images and measured the maximum standardized up take values (SUVmax) for each region. Results: Mean values of SUVmax in MTX-LPD and ML were 14.6 and 17.2, respectively (p = 0.49). In MTX-LPD, 55 lesions met the Cotswold classification, consisting of 37 nodal and 18 extranodal lesions. In ML, 82 lesions were found, consisting of 68 nodal and 14 extranodal lesions. MTX-LPD showed a higher incident of the involvement in extranodal lesions throughout the whole body (p < 0.001). Conclusion: Because this disease occurs widely throughout the whole body, we need to pay attention to the less frequent sites as well when performing PET imaging in patients with MTX-LPD.
文摘BACKGROUND The prognostic value of preoperative fluorine-18-fluorodeoxyglucose positronemission tomography(18 F-FDG PET)scan for determining overall survival(OS)in breast cancer(BC)patients is controversial.AIM To evaluate the OS predictive value of preoperative PET positivity after 15 years.METHODS We performed a retrospective search of the Universitair Ziekenhuis Brussel patient database for nonmetastatic patients who underwent preoperative PET between 2002-2008.PET positivity was determined by anatomical region of interest(AROI)findings for breast and axillary,sternal,and distant sites.The prognostic role of PET was examined as a qualitative binary factor(positive vs negative status)and as a continuous variable[maximum standard uptake value(SUVmax)]in multivariate survival analyses using Cox proportional hazards models.Among the 104 identified patients who received PET,36 were further analyzed for the SUVmax in the AROI.RESULTS Poor OS within the 15-year study period was predicted by PET-positive status for axillary(P=0.033),sternal(P=0.033),and combined PET-axillary/sternal(P=0.008)nodes.Poor disease-free survival was associated with PET-positive axillary status(P=0.040)and combined axillary/sternal status(P=0.023).Cox models confirmed the long-term prognostic value of combined PETaxillary/sternal status[hazard ratio(HR):3.08,95%confidence interval:1.42-6.69].SUVmax of ipsilateral breast and axilla as continuous covariates were significant predictors of long-term OS with HRs of 1.25(P=0.048)and 1.54(P=0.029),corresponding to relative increase in the risk of death of 25%and 54%per SUVmax unit,respectively.In addition,the ratio of the ipsilateral axillary SUVmax over the contralateral axillary SUVmax was the most significant OS predictor(P=0.027),with 1.94 HR,indicating a two-fold relative increase of mortality risk.CONCLUSION Preoperative PET is valuable for prediction of long-term survival.Ipsilateral axillary SUVmax ratio over the uninvolved side represents a new prognostic finding that warrants further investigation.
文摘目的探讨多元化护理干预措施在老年肿瘤患者正电子发射型断层(PET)/X线计算机断层(CT)检查中的应用效果,为治疗该病症提供护理方法。方法选取2020年10月—2022年10月于西京医院收治的老年肿瘤患者81例,采用随机摸红蓝球的方式分为多元化护理组(n=41,蓝球)和常规护理组(n=40,红球)。常规护理组接受常规护理干预,多元化护理组在常规护理组的基础上采用多元化护理干预,2组均干预2周。比较2组干预前后心理状态[采用综合性医院焦虑抑郁量表(Hospital Anxiety and Depression Scale,HADS)评估]评分;比较2组检查用时、检查中断率和重复检查率、PET/CT显像结果准确性、PET/CT显像优良率(以最终诊断为标准)及检查依从率。结果干预后,2组HADS评分中焦虑、抑郁和总分均较同组干预前降低,且多元化护理组评分低于常规护理组,差异均有统计学意义(P<0.05);检查后,多元化护理组检查用时、检查中断率、重复检查率均低于常规护理组(均P<0.05);多元化护理组检查依从率、PET/CT图像优级率均高于常规护理组(均P<0.05);2组PET/CT图像优良率和显像结果准确性差异无统计学意义(P>0.05)。结论多元化护理干预措施可能有效提高老年肿瘤患者PET/CT检查的依从率,减少外界因素对测量结果的影响,有助于改善患者检查期间的心理状态,具有一定的临床应用价值。
