摘要
目的探析PET/CT与MRI融合图像技术应用于直肠癌淋巴结转移的影像学特征及诊断价值。方法选择2019年4月—2021年9月本院就诊的54例直肠癌患者作为研究对象,按照淋巴结是否转移分为转移淋巴结组、非转移淋巴结组两组,转移淋巴结组234枚、非转移淋巴结组162枚。通过测量转移、非转移性淋巴结的长短径、SUV最大值(PET/CT)、ADC值(MRI)对比不同技术诊断直肠癌淋巴结转移结果及淋巴结转移诊断效能;分析两种技术影像学定量特征。结果PET/CT诊断中转移淋巴结(阳性)SUV平均值明显高于非转移淋巴结(阴性),差异有统计学意义(P<0.05);MRI诊断中转移淋巴结(阳性)ADC平均值明显低于非转移淋巴结(阴性),差异有统计学意义(P<0.05);转移淋巴结(阳性)与非转移淋巴结(阴性)长径、短径比较,差异无统计学意义(P>0.05)。影像学显示直肠癌转移淋巴结表现为距离原发灶较近,ADC值减低、SUV值较高。三种(PET/CT、MRI及两者融合)图像诊断效能(灵敏度、准确性)存在统计学差异(P<0.05),其中融合图像的灵敏度、准确性、特异度均明显高于PET/CT、MRI单一诊断效能,MRI诊断灵敏度(85.71%)明显高于PET/CT(77.14%),而特异度(73.68%)明显低于PET/CT(84.21%)。结论PET/CT联合MRI融合图像应用于直肠癌淋巴结转移中价值较高,可以有效提高诊断效能,精准评估淋巴结转移,值得临床推广应用。
Objective To explore the imaging characteristics and diagnostic value of PET/CT and MRI fusion imaging technology in lymph node metastasis of rectal cancer.Methods 54 patients suffered with rectal cancer those were admitted to our hospital from April 2019 to September 2021 were selected as study objects.According to the occurrence of lymph nodes metastasis,they were divided into lymph nodes metastasis group(234 lymph nodes)and non lymph nodes metastasis group(162 lymph nodes).The length of major axis and minor axis of metastatic and non-metastatic lymph nodes,maximum SUV(PET/CT)and ADC value(MRI)were measured.The results and diagnostic efficacy of different techniques for lymph node metastasis of rectal cancer were compared.The imaging quantitative characteristics of the two techniques were analyzed.Results The SUV value of metastatic lymph node(positive)was significantly higher than that of non-metastatic lymph node(negative)in PET/CT diagnosis(P<0.05).In MRI diagnosis,ADC value of metastatic lymph node(positive)was significantly lower than that of non-metastatic lymph node(negative)(P<0.05).There was no significant difference in long diameter and short diameter between metastatic lymph nodes(positive)and non-metastatic lymph nodes(negative)(P>0.05).Imaging showed that metastatic lymph nodes of rectal cancer were closer to the primary site,with lower ADC value and higher SUV value.The diagnostic efficacy(sensitivity and accuracy)of the three kinds of PET/CT,MRI and fusion images were statistically different(P<0.05),and the sensitivity,accuracy and specificity of fusion images were significantly higher than the single diagnostic efficacy of PET/CT and MRI.The diagnostic sensitivity of MRI(85.71%)was significantly higher than that of PET/CT(77.14%),while the specificity(73.68%)was significantly lower than that of PET/CT(84.21%).Conclusions PET/CT combined MRI fusion image is of high value in lymph node metastasis of rectal cancer,which could effectively improve the diagnostic efficiency and accurately evaluate lym
作者
张伟标
黄晓红
智生芳
毕伟
廖俊伟
Zhang Weibiao;Huang Xiaohong;Zhi Shengfang;Bi Wei;Liao Junwei(Dongguan people's hospital affiliated to Southern Medical University,Dongguan,Guangdong,523000,52300,China)
出处
《齐齐哈尔医学院学报》
2022年第7期657-661,共5页
Journal of Qiqihar Medical University
