目的:比较和分析两种基于CT影像的胃癌区域淋巴结体积测量方法--球面感兴趣区(Sphere ROI) CT阈值法和手动勾画计算容积法的一致性。方法:收集接受根治性手术治疗的81例胃癌患者资料,根据纳入和排除标准,从转移性、非转移性淋巴结中各选...目的:比较和分析两种基于CT影像的胃癌区域淋巴结体积测量方法--球面感兴趣区(Sphere ROI) CT阈值法和手动勾画计算容积法的一致性。方法:收集接受根治性手术治疗的81例胃癌患者资料,根据纳入和排除标准,从转移性、非转移性淋巴结中各选取50枚进行测量和分析,比较两种方法测量淋巴结体积的一致性。一致性检验采用Kappa检验和组内相关系数(ICC)检验。结果:2名医师应用手动勾画计算容积法测量淋巴结体积的一致性(Kappa=0.823,ICC=0.980),以及应用Sphere ROI CT阈值法测量淋巴结体积的一致性(Kappa=0.892,ICC=0.992)均良好,且后者优于前者。另一方面,医师A在不同时间点应用手动勾画计算容积法测量淋巴结体积的一致性(Kappa=0.822, ICC=0.988),以及应用Sphere ROI CT阈值法测量淋巴结体积的一致性(Kappa=0.874,ICC=0.994)也较好,且后者优于前者。结论:Sphere ROI CT阈值法在胃癌区域淋巴结体积测量的一致性优于手动勾画计算容积法,且操作更简单便捷,推荐在胃癌区域淋巴结体积测量上优先考虑使用Sphere ROI CT阈值法。展开更多
Objective To observe the value of isotropic volumetric MRI for displaying perineural spread(PNS)of cranial nerve(CN)in nasopharyngeal carcinoma.Methods Eighty-seven patients with pathologically proven nasopharyngeal c...Objective To observe the value of isotropic volumetric MRI for displaying perineural spread(PNS)of cranial nerve(CN)in nasopharyngeal carcinoma.Methods Eighty-seven patients with pathologically proven nasopharyngeal carcinoma were prospectively enrolled.MR scanning,including three-dimensional liver acquisition with volume acceleration-flexible(3D LAVA_Flex)image,T2WI with fat suppression(T2WI-FS),T1WI,contrast enhancement(CE)T1WI-FS of nasopharynx and neck region were performed.The displaying rates of CN PNS were evaluated and compared between 3D LAVA_Flex and T2WI-FS,T1WI,CE-T1WI-FS at patient level,CN group level and neural level,respectively.Results The displaying rate of CN PNS in all 87 nasopharyngeal carcinoma patients by 3D LAVA_Flex sequence was 49.43%(43/87),higher than that of conventional MRI(30/87,34.48%,P=0.001).Among 59 patients with advanced nasopharyngeal carcinoma diagnosed with conventional sequences,the displaying rate of CN PNS was 71.19%(42/59)by 3D LAVA-Flex sequence,higher than that of conventional MRI(30/59,50.85%,P=0.001).At both patient level and posterior CN level,significant differences of the displaying rate of CN PNS were found between 3D LAVA-Flex sequence and T2WI-FS,T1WI,CE-T1WI-FS,while at CN level,the displaying rates of mandibular nerve PNS,CNⅨ—ⅪPNS in jugular foramen(P<0.05)and CNⅨ—ⅫPNS in carotid space of 3D LAVA_Flex sequence were all significantly higher than that of T2WI-FS,T1WI and CE-T1WI-FS(all P<0.05),of PNS of CNⅢ—Ⅴin cavernous sinus were higher than that of T2WI-FS(P<0.05),while of PNS of hypoglossal nerve were significantly higher than that of T2WI-FS and T1WI(both P<0.05).Conclusion 3D LAVA_Flex sequence could be used to effectively display CN PNS of nasopharyngeal carcinoma.展开更多
目的:探讨磁共振全身成像对鼻咽癌初诊患者远处转移的诊断价值。方法:2008年11月至2009年8月对福建省肿瘤医院经病理证实的291例鼻咽癌初诊患者在治疗前一周内行全身磁共振成像(Whole Body Magnetic Resonance Imaging,WB-MRI)、X线胸...目的:探讨磁共振全身成像对鼻咽癌初诊患者远处转移的诊断价值。方法:2008年11月至2009年8月对福建省肿瘤医院经病理证实的291例鼻咽癌初诊患者在治疗前一周内行全身磁共振成像(Whole Body Magnetic Resonance Imaging,WB-MRI)、X线胸片、肝脏超声和^(99m)Tc-MDP核素骨扫描,记录每例患者检出的骨、肺、肝转移灶数目,采用SPSS15.0统计软件,对几种影像方法各自检出的骨、肺、肝转移灶数目行McNemar's检验,比较检出率的差异。结果:本组研究共检出骨转移者24例,共发现骨转移灶95个,其中WB-MRI和骨扫描分别检出71个和36个,两者之间差异有统计学意义(P=0.004)。WB-MRI诊断出肺转移6例,而X线胸片诊断出3例,两者间差异无统计学意义(P>0.25);WB-MRI诊断出肝转移6例,而肝脏超声诊断处4例,两者间差异亦无统计学意义(P>0.05)。此外,WB-MRI和超声分别检出肝血管瘤12例和24例(P<0.01),以及肝囊肿34例和16例(P<0.005)。结论:WB-MRI在检测鼻咽癌全身远处转移有较高的应用价值,可作为其M分期的首选影像学检查。展开更多
文摘目的:比较和分析两种基于CT影像的胃癌区域淋巴结体积测量方法--球面感兴趣区(Sphere ROI) CT阈值法和手动勾画计算容积法的一致性。方法:收集接受根治性手术治疗的81例胃癌患者资料,根据纳入和排除标准,从转移性、非转移性淋巴结中各选取50枚进行测量和分析,比较两种方法测量淋巴结体积的一致性。一致性检验采用Kappa检验和组内相关系数(ICC)检验。结果:2名医师应用手动勾画计算容积法测量淋巴结体积的一致性(Kappa=0.823,ICC=0.980),以及应用Sphere ROI CT阈值法测量淋巴结体积的一致性(Kappa=0.892,ICC=0.992)均良好,且后者优于前者。另一方面,医师A在不同时间点应用手动勾画计算容积法测量淋巴结体积的一致性(Kappa=0.822, ICC=0.988),以及应用Sphere ROI CT阈值法测量淋巴结体积的一致性(Kappa=0.874,ICC=0.994)也较好,且后者优于前者。结论:Sphere ROI CT阈值法在胃癌区域淋巴结体积测量的一致性优于手动勾画计算容积法,且操作更简单便捷,推荐在胃癌区域淋巴结体积测量上优先考虑使用Sphere ROI CT阈值法。
文摘Objective To observe the value of isotropic volumetric MRI for displaying perineural spread(PNS)of cranial nerve(CN)in nasopharyngeal carcinoma.Methods Eighty-seven patients with pathologically proven nasopharyngeal carcinoma were prospectively enrolled.MR scanning,including three-dimensional liver acquisition with volume acceleration-flexible(3D LAVA_Flex)image,T2WI with fat suppression(T2WI-FS),T1WI,contrast enhancement(CE)T1WI-FS of nasopharynx and neck region were performed.The displaying rates of CN PNS were evaluated and compared between 3D LAVA_Flex and T2WI-FS,T1WI,CE-T1WI-FS at patient level,CN group level and neural level,respectively.Results The displaying rate of CN PNS in all 87 nasopharyngeal carcinoma patients by 3D LAVA_Flex sequence was 49.43%(43/87),higher than that of conventional MRI(30/87,34.48%,P=0.001).Among 59 patients with advanced nasopharyngeal carcinoma diagnosed with conventional sequences,the displaying rate of CN PNS was 71.19%(42/59)by 3D LAVA-Flex sequence,higher than that of conventional MRI(30/59,50.85%,P=0.001).At both patient level and posterior CN level,significant differences of the displaying rate of CN PNS were found between 3D LAVA-Flex sequence and T2WI-FS,T1WI,CE-T1WI-FS,while at CN level,the displaying rates of mandibular nerve PNS,CNⅨ—ⅪPNS in jugular foramen(P<0.05)and CNⅨ—ⅫPNS in carotid space of 3D LAVA_Flex sequence were all significantly higher than that of T2WI-FS,T1WI and CE-T1WI-FS(all P<0.05),of PNS of CNⅢ—Ⅴin cavernous sinus were higher than that of T2WI-FS(P<0.05),while of PNS of hypoglossal nerve were significantly higher than that of T2WI-FS and T1WI(both P<0.05).Conclusion 3D LAVA_Flex sequence could be used to effectively display CN PNS of nasopharyngeal carcinoma.
文摘目的:探讨磁共振全身成像对鼻咽癌初诊患者远处转移的诊断价值。方法:2008年11月至2009年8月对福建省肿瘤医院经病理证实的291例鼻咽癌初诊患者在治疗前一周内行全身磁共振成像(Whole Body Magnetic Resonance Imaging,WB-MRI)、X线胸片、肝脏超声和^(99m)Tc-MDP核素骨扫描,记录每例患者检出的骨、肺、肝转移灶数目,采用SPSS15.0统计软件,对几种影像方法各自检出的骨、肺、肝转移灶数目行McNemar's检验,比较检出率的差异。结果:本组研究共检出骨转移者24例,共发现骨转移灶95个,其中WB-MRI和骨扫描分别检出71个和36个,两者之间差异有统计学意义(P=0.004)。WB-MRI诊断出肺转移6例,而X线胸片诊断出3例,两者间差异无统计学意义(P>0.25);WB-MRI诊断出肝转移6例,而肝脏超声诊断处4例,两者间差异亦无统计学意义(P>0.05)。此外,WB-MRI和超声分别检出肝血管瘤12例和24例(P<0.01),以及肝囊肿34例和16例(P<0.005)。结论:WB-MRI在检测鼻咽癌全身远处转移有较高的应用价值,可作为其M分期的首选影像学检查。
