Background: Factors that can predict the presence and number of noncalcified coronary plaques (NCP) in Japanese patients with zero coronary artery calcium scores (CACS) essentially remain undefined. Methods and Result...Background: Factors that can predict the presence and number of noncalcified coronary plaques (NCP) in Japanese patients with zero coronary artery calcium scores (CACS) essentially remain undefined. Methods and Results: We assessed independent predictors of the presence and number of segments with NCP in 111 Japanese patients with zero CACS who underwent 64-slice multi-detector computed tomography at our hospital. Thirty five patients (32%) had NCP, and 24 patients (22%) had ≥ 2 NCPs. Multiple logistic regression analysis revealed that significant predictors for the presence of NCP were age (odds ratio [OR]: 1.06, 95% confidence interval [CI] 1.01 - 1.11, p = 0.021), male (OR: 3.61, 95% CI 1.40 - 9.35, p = 0.008) and diabetes mellitus (OR: 3.10, 95% CI 1.02 - 9.45, p = 0.046), and those for the presence of ≥ 2 NCPs were age (OR: 1.08, 95% CI 1.02 - 1.15, p = 0.007) and a current smoking habit (OR: 5.09, 95% CI 1.00 - 25.74, p = 0.049). Multiple linear regression analysis identified advanced age, male gender and diabetes mellitus as independent predictors of the number of NCPs. A novel score calculated from the above four predictors showed moderate accuracy for a diagnosis of NCP and ≥ 2 NCPs, with areas under receiver operating curves of 0.738 and 0.736, respectively. Conclusions: Male Japanese patients with zero CACS, advanced age, diabetes mellitus and a current smoking habit might have NCPs.展开更多
AIM to observe the effect of targeted therapy with 64-slice spiral computed tomography (CT) combined with cryoablation for liver cancer. METHODS A total of 124 patients ( 142 tumors) were enrolled into this study. Acc...AIM to observe the effect of targeted therapy with 64-slice spiral computed tomography (CT) combined with cryoablation for liver cancer. METHODS A total of 124 patients ( 142 tumors) were enrolled into this study. According to the use of dual-slice spiral CT or 64-slice spiral CT as a guide technology, patients were divided into two groups: dual-slice group (n = 56, 65 tumors) and 64-slice group (n = 8, 77 tumors). All patients were accepted and received targeted therapy by an argon-helium superconducting surgery system. The guided scan times of the two groups was recorded and compared. In the two groups, the lesion ice coverage in diameter of >= 3 cm and < 3 cm were recorded, and freezing effective rate was compared. Hepatic perfusion values [ hepatic artery perfusion (HAP), portal vein perfusion (PVP), and the hepatic arterial perfusion index (HAPI)] of tumor tissues, adjacent tissues and normal liver tissues at preoperative and postoperative four weeks in the two groups were compared. Local tumor changes were recorded and efficiency was compared at four weeks post-operation. Adverse events were recorded and compared between the two groups, including fever, pain, frostbite, nausea, vomiting, pleural effusion and abdominal bleeding. RESULTS Guided scan times in the dual-slice group was longer than that in the 64-slice group (t = 11.445, P = 0.000). The freezing effective rate for tumors < 3 cm in diameter in the dual-slice group (81.58%) was lower than that in the 64-slice group (92.86%) (chi(2) = 5.707, P = 0.017). The HAP and HAPI of tumor tissues were lower at four weeks post-treatment than at pretreatment in both groups (all P < 0.05), and those in the 64-slice group were lower than that in the dual-slice group ( all P < 0.05). HAP and PVP were lower and HAPI was higher in tumor adjacent tissues at post-treatment than at pre-treatment ( all P < 0.05). Furthermore, the treatment effect and therapeutic efficacy in the dual-slice group were lower than the 64-slice group at four weeks post-treatment (all P < 0.05). Moreover, pleural effusion and intraperitoneal hemorrhage occurred in patients in the dual-slice group, while no complications occurred in the 64-slice group (all P < 0.05). CONCLUSION 64-slice spiral CT applied with cryoablation in targeted therapy for liver cancer can achieve a safe and effective freezing treatment, so it is worth being used.展开更多
目的探讨面神经管64排螺旋CT低剂量扫描临床应用的可行性。方法收集2015年3~9月临床怀疑颞骨、鼻副窦病变行64排螺旋CT且无面神经疾病患者88例,采用随机单盲法分成常规剂量组(A组)和三组不同扫描参数的低剂量组(B-D组),每组22例。常规...目的探讨面神经管64排螺旋CT低剂量扫描临床应用的可行性。方法收集2015年3~9月临床怀疑颞骨、鼻副窦病变行64排螺旋CT且无面神经疾病患者88例,采用随机单盲法分成常规剂量组(A组)和三组不同扫描参数的低剂量组(B-D组),每组22例。常规剂量组使用参数为120 k V/240 m A,低剂量组的扫描参数分别为B组(100 k V/240 m A)、C组(100 k V/120 m A)、D组(100 k V/80 m A)。采集图像由2名放射诊断主治医师及以上人员共同进行分析,包括图像质量评分、记录图像噪声和辐射剂量。图像质量评分的统计分析使用Kruskal-Wallis H秩和检验,噪声分析使用单因素方差分析。结果 A、B、C、D四组的图像质量评分分别为20.0分(19.5,20.0)、19.5分(19.5,20.0)、19.5分(19.5,20.0)和19.5分(19.5,20.0),CT值分别为(2 258.43±90.65)Hu、(2 289.00±43.89)Hu、(2 298.82±46.86)Hu、(2 299.89±48.05)Hu,四组比较差异均无统计学意义(P>0.05),图像能够满足诊断要求;B、C、D三组CT剂量指数、有效剂量E与常规剂量组比较均有不同程度的降低,以D组分别下降79.3%、79.2%最为显著,患者接受的辐射剂量明显降低。结论 100 k V/80 m A可作为64排螺旋CT面神经管低剂量扫描优化参数阈值。展开更多
文摘Background: Factors that can predict the presence and number of noncalcified coronary plaques (NCP) in Japanese patients with zero coronary artery calcium scores (CACS) essentially remain undefined. Methods and Results: We assessed independent predictors of the presence and number of segments with NCP in 111 Japanese patients with zero CACS who underwent 64-slice multi-detector computed tomography at our hospital. Thirty five patients (32%) had NCP, and 24 patients (22%) had ≥ 2 NCPs. Multiple logistic regression analysis revealed that significant predictors for the presence of NCP were age (odds ratio [OR]: 1.06, 95% confidence interval [CI] 1.01 - 1.11, p = 0.021), male (OR: 3.61, 95% CI 1.40 - 9.35, p = 0.008) and diabetes mellitus (OR: 3.10, 95% CI 1.02 - 9.45, p = 0.046), and those for the presence of ≥ 2 NCPs were age (OR: 1.08, 95% CI 1.02 - 1.15, p = 0.007) and a current smoking habit (OR: 5.09, 95% CI 1.00 - 25.74, p = 0.049). Multiple linear regression analysis identified advanced age, male gender and diabetes mellitus as independent predictors of the number of NCPs. A novel score calculated from the above four predictors showed moderate accuracy for a diagnosis of NCP and ≥ 2 NCPs, with areas under receiver operating curves of 0.738 and 0.736, respectively. Conclusions: Male Japanese patients with zero CACS, advanced age, diabetes mellitus and a current smoking habit might have NCPs.
基金Supported by Hebei Province Health Department of Scientific Research fund project,No.20110157
文摘AIM to observe the effect of targeted therapy with 64-slice spiral computed tomography (CT) combined with cryoablation for liver cancer. METHODS A total of 124 patients ( 142 tumors) were enrolled into this study. According to the use of dual-slice spiral CT or 64-slice spiral CT as a guide technology, patients were divided into two groups: dual-slice group (n = 56, 65 tumors) and 64-slice group (n = 8, 77 tumors). All patients were accepted and received targeted therapy by an argon-helium superconducting surgery system. The guided scan times of the two groups was recorded and compared. In the two groups, the lesion ice coverage in diameter of >= 3 cm and < 3 cm were recorded, and freezing effective rate was compared. Hepatic perfusion values [ hepatic artery perfusion (HAP), portal vein perfusion (PVP), and the hepatic arterial perfusion index (HAPI)] of tumor tissues, adjacent tissues and normal liver tissues at preoperative and postoperative four weeks in the two groups were compared. Local tumor changes were recorded and efficiency was compared at four weeks post-operation. Adverse events were recorded and compared between the two groups, including fever, pain, frostbite, nausea, vomiting, pleural effusion and abdominal bleeding. RESULTS Guided scan times in the dual-slice group was longer than that in the 64-slice group (t = 11.445, P = 0.000). The freezing effective rate for tumors < 3 cm in diameter in the dual-slice group (81.58%) was lower than that in the 64-slice group (92.86%) (chi(2) = 5.707, P = 0.017). The HAP and HAPI of tumor tissues were lower at four weeks post-treatment than at pretreatment in both groups (all P < 0.05), and those in the 64-slice group were lower than that in the dual-slice group ( all P < 0.05). HAP and PVP were lower and HAPI was higher in tumor adjacent tissues at post-treatment than at pre-treatment ( all P < 0.05). Furthermore, the treatment effect and therapeutic efficacy in the dual-slice group were lower than the 64-slice group at four weeks post-treatment (all P < 0.05). Moreover, pleural effusion and intraperitoneal hemorrhage occurred in patients in the dual-slice group, while no complications occurred in the 64-slice group (all P < 0.05). CONCLUSION 64-slice spiral CT applied with cryoablation in targeted therapy for liver cancer can achieve a safe and effective freezing treatment, so it is worth being used.
文摘目的探讨面神经管64排螺旋CT低剂量扫描临床应用的可行性。方法收集2015年3~9月临床怀疑颞骨、鼻副窦病变行64排螺旋CT且无面神经疾病患者88例,采用随机单盲法分成常规剂量组(A组)和三组不同扫描参数的低剂量组(B-D组),每组22例。常规剂量组使用参数为120 k V/240 m A,低剂量组的扫描参数分别为B组(100 k V/240 m A)、C组(100 k V/120 m A)、D组(100 k V/80 m A)。采集图像由2名放射诊断主治医师及以上人员共同进行分析,包括图像质量评分、记录图像噪声和辐射剂量。图像质量评分的统计分析使用Kruskal-Wallis H秩和检验,噪声分析使用单因素方差分析。结果 A、B、C、D四组的图像质量评分分别为20.0分(19.5,20.0)、19.5分(19.5,20.0)、19.5分(19.5,20.0)和19.5分(19.5,20.0),CT值分别为(2 258.43±90.65)Hu、(2 289.00±43.89)Hu、(2 298.82±46.86)Hu、(2 299.89±48.05)Hu,四组比较差异均无统计学意义(P>0.05),图像能够满足诊断要求;B、C、D三组CT剂量指数、有效剂量E与常规剂量组比较均有不同程度的降低,以D组分别下降79.3%、79.2%最为显著,患者接受的辐射剂量明显降低。结论 100 k V/80 m A可作为64排螺旋CT面神经管低剂量扫描优化参数阈值。
