Objective:To investigate the clinical effects of combining decitabine with a half-dose priming regimen in the treatment of elderly patients with acute myeloid leukemia.Methods:This study was conducted in Shaanxi Provi...Objective:To investigate the clinical effects of combining decitabine with a half-dose priming regimen in the treatment of elderly patients with acute myeloid leukemia.Methods:This study was conducted in Shaanxi Provincial People's Hospital from January 2019 to January 2022.Sxty patients were recruited as the research subects.The patients received different treatments and were randomly divided into two groups,with 30 cases in each group,one of which was treated with conventional priming regimen(control group),and the other was treated with decitabine combined with a half-dose priming regimen(study group).The two groups were compared and analyzed in terms of the effectiveness of treatment.Results:The rate of symptom relief in the study group was 96.67%,which was significantly higher than that in the control group(76.67%)(p<0.05).Before treatment,there was no significant difference in the quality-of-life scores between the two groups,with p>0.05.The patients in the study group had sigificantly longer discase free survival and overall survival than those in the control group,with p<0.05.The effectiveness of treatment in the study group was also better.Conclusion:The use of decitabine im combination with a half dose priming regimen for the treatment of elderly patients with acute myeloid lcukemia is effective in improving patients'quality of life,relieving symptoms.and prolonging their survival.展开更多
目的：应用常规显像剂的一半剂量情况下，评价有序子集最大期望值法（OSEM）重建单光子门控心肌灌注（G-MPI）图像质量及其临床应用的可行性。方法对可疑或确诊冠心病患者行 G-MPI 显像，在半剂量注射显像剂情况下分成常规25 s 采集时...目的：应用常规显像剂的一半剂量情况下，评价有序子集最大期望值法（OSEM）重建单光子门控心肌灌注（G-MPI）图像质量及其临床应用的可行性。方法对可疑或确诊冠心病患者行 G-MPI 显像，在半剂量注射显像剂情况下分成常规25 s 采集时间组和50 s 倍增采集时间组。采集完毕后每组原始数据分别按滤波反投影（FBP）和 OSEM 重建分成两个亚组，每组图像按5分法评价图像质量、按左心室17节段5点放射性评分法评价显像剂分布，计算各组 FBP 和 OSEM 重建的图像质量评分、负荷或静息累积评分（SSS 或 SRS），以及左心室射血分数（LVEF）并配对比较；计算并比较常规采集和倍增时间采集组 OSEM 重建图像的优质图像（4分）所占百分比。结果半剂量注射显像剂采用25 s 常规采集图像后，数据采用 FBP 重建图像评分差于 OSEM 重建（t ＝-3.72，P ＜0.05），放射性累积评分 FBP 组高于 OSEM 组（t ＝2.22，P ＜0.05），但在 LVEF 测定方面比较差异未见统计学意义（t ＝0.97，P ＞0.05）；半剂量注射显像剂采用50 s 倍增采集时间后，数据无论是 FBP 或 OSEM 重建，二者在图像评分、放射性分布累积评分和 LVEF 测定方面比较差异均未见统计学意义（P 均＞0.05）；半剂量注射25 s 采集 OSEM重建和半剂量注射50 s 采集 OSEM 重建的优质图像（图像评分为4分）所占比例比较差异未见统计学意义（χ2＝1.00，P ＞0.05）。结论在半剂量注射情况下，SPECT G-MPI 常规25 s 采集时 OSEM 重建图像质量优于 FBP 重建， FBP 重建会高估病变严重程度，而倍增时间采集后二者图像质量相当，在左室放射性分布累积评分和 LVEF 测量方面比较差异未见统计学意义。因此，G-MPI 半剂量注射、常规时间采集、OSEM 重建，能够在保证图像质量的前提下，无需增加采集时间，降低了患者辐射剂量，具有较好的临床�展开更多
文摘目的探讨注射半剂量^(18)F-氟代脱氧葡糖(^(18)F-flurodeoxyglucose,^(18)F-FDG)对恶性肿瘤患者全身正电子发射计算机断层显像(positron emission tomography/computed tomography,PET/CT)图像质量的影响,以确定注射半剂量^(18)F-FDG对恶性肿瘤进行有效诊断的可行性。方法回顾性分析2021年2月至2021年9月在河南省人民医院PET/CT中心^(18)F-FDG全身显像40例确诊恶性肿瘤患者的PET/CT图像。患者分为全剂量组(3.70 MBq/kg,20例)和半剂量组(1.85 MBq/kg,20例)。两组患者均采用联影全景动态PET/CT扫描仪采集图像,全剂量组患者PET采集时间3 min,半剂量组患者PET采集时间10 min。由2名从业核医学5年以上的医生采用5分制(5分-优;1分-差)对两组图像打分,并对比两组肿瘤部位最大标准摄取值(maximum of the standard uptake value,SUVmax)值、肿瘤与肌肉摄取比值等指标,以评定图像质量,数据分析采用χ^(2)检验。结果全剂量组和半剂量组图像在性别、年龄、体质量指数、注射和成像间隔时间、肿瘤病变性质和病理类型等方面两组之间差异无统计学意义(P>0.05)。全剂量组和半剂量组图像质量平均评分接近,分别为(4.6±0.3)分和(4.5±0.2)分。两组肿瘤SUVmax和肿瘤与肌肉摄取比值等指标之间没有显著差异(P>0.05)。结论与全剂量组相比,半剂量组呈现了较好的信噪比。半剂量组获得的图像质量评分与全剂量组相比没有统计学意义上的差异。因此,患者在接受联影全景动态PET/CT检查时,如果^(18)F-FDG的总剂量有限,患者可通过注射半剂量的^(18)F-FDG并适当延长PET采集时间来满足临床诊断对图像的要求。
基金Basic Research of Natural Science in Shaanxi Province(Grant Number:2021JM-548)SPPH Incubator Fund for Development of Science and Technology(Grant Number:2021YJY-19)。
文摘Objective:To investigate the clinical effects of combining decitabine with a half-dose priming regimen in the treatment of elderly patients with acute myeloid leukemia.Methods:This study was conducted in Shaanxi Provincial People's Hospital from January 2019 to January 2022.Sxty patients were recruited as the research subects.The patients received different treatments and were randomly divided into two groups,with 30 cases in each group,one of which was treated with conventional priming regimen(control group),and the other was treated with decitabine combined with a half-dose priming regimen(study group).The two groups were compared and analyzed in terms of the effectiveness of treatment.Results:The rate of symptom relief in the study group was 96.67%,which was significantly higher than that in the control group(76.67%)(p<0.05).Before treatment,there was no significant difference in the quality-of-life scores between the two groups,with p>0.05.The patients in the study group had sigificantly longer discase free survival and overall survival than those in the control group,with p<0.05.The effectiveness of treatment in the study group was also better.Conclusion:The use of decitabine im combination with a half dose priming regimen for the treatment of elderly patients with acute myeloid lcukemia is effective in improving patients'quality of life,relieving symptoms.and prolonging their survival.
文摘目的：应用常规显像剂的一半剂量情况下，评价有序子集最大期望值法（OSEM）重建单光子门控心肌灌注（G-MPI）图像质量及其临床应用的可行性。方法对可疑或确诊冠心病患者行 G-MPI 显像，在半剂量注射显像剂情况下分成常规25 s 采集时间组和50 s 倍增采集时间组。采集完毕后每组原始数据分别按滤波反投影（FBP）和 OSEM 重建分成两个亚组，每组图像按5分法评价图像质量、按左心室17节段5点放射性评分法评价显像剂分布，计算各组 FBP 和 OSEM 重建的图像质量评分、负荷或静息累积评分（SSS 或 SRS），以及左心室射血分数（LVEF）并配对比较；计算并比较常规采集和倍增时间采集组 OSEM 重建图像的优质图像（4分）所占百分比。结果半剂量注射显像剂采用25 s 常规采集图像后，数据采用 FBP 重建图像评分差于 OSEM 重建（t ＝-3.72，P ＜0.05），放射性累积评分 FBP 组高于 OSEM 组（t ＝2.22，P ＜0.05），但在 LVEF 测定方面比较差异未见统计学意义（t ＝0.97，P ＞0.05）；半剂量注射显像剂采用50 s 倍增采集时间后，数据无论是 FBP 或 OSEM 重建，二者在图像评分、放射性分布累积评分和 LVEF 测定方面比较差异均未见统计学意义（P 均＞0.05）；半剂量注射25 s 采集 OSEM重建和半剂量注射50 s 采集 OSEM 重建的优质图像（图像评分为4分）所占比例比较差异未见统计学意义（χ2＝1.00，P ＞0.05）。结论在半剂量注射情况下，SPECT G-MPI 常规25 s 采集时 OSEM 重建图像质量优于 FBP 重建， FBP 重建会高估病变严重程度，而倍增时间采集后二者图像质量相当，在左室放射性分布累积评分和 LVEF 测量方面比较差异未见统计学意义。因此，G-MPI 半剂量注射、常规时间采集、OSEM 重建，能够在保证图像质量的前提下，无需增加采集时间，降低了患者辐射剂量，具有较好的临床�
