磁共振扩散峰度成像对腮腺肿瘤的鉴别诊断价值

发布时间：2018-01-12 09:11

本文关键词：磁共振扩散峰度成像对腮腺肿瘤的鉴别诊断价值　出处：《放射学实践》2017年08期 　论文类型：期刊论文

【摘要】：目的:探讨磁共振扩散峰度成像(DKI)及其定量指标对不同病理类型腮腺肿瘤的鉴别诊断价值。方法:47例经手术病理证实的腮腺肿瘤患者(良性37例、恶性10例)术前均行磁共振DKI检查,获得肿瘤的定量参数Kmean、Krad和Kax值,比较各项参数在不同病理类型腮腺肿瘤中的差异,并采用受试者工作特征曲线分析其诊断效能。结果:腮腺良性肿瘤(包括腺淋巴瘤)的Kmean、Krad和Kax值均低于腮腺恶性肿瘤,但组间差异无统计学意义(P0.05);不包括腺淋巴瘤的腮腺良性肿瘤的Kmean、Krad和Kax值均低于腮腺恶性肿瘤,组间差异有统计学意义(P0.05);腮腺混合瘤的Kmean、Krad和Kax值均明显低于腮腺恶性肿瘤及腺淋巴瘤,差异均有统计学意义(P0.05);腮腺腺淋巴瘤的Kmean、Krad和Kax值高于腮腺恶性肿瘤,但组间差异无统计学意义(P0.05)。Kmean、Krad和Kax值对于鉴别腮腺混合瘤与恶性肿瘤、腮腺混合瘤与腺淋巴瘤均具有很高的敏感性和特异性。结论:DKI定量参数有助于不同病理类型腮腺肿瘤的鉴别诊断。
[Abstract]:Objective: to investigate the value of Mr diffusion kurtosis imaging (DKI) and its quantitative indexes in differential diagnosis of parotid tumors of different pathological types. 37 cases were benign. Mr DKI was performed in all 10 cases of malignant tumors before operation. The quantitative parameters (Kmean-Krad and Kax) were obtained, and the differences of the parameters in different pathological types of parotid gland tumors were compared. The diagnostic efficiency of parotid benign tumors (including adenolymphoma) was analyzed by using the operating characteristic curve. Results: the values of Kmeanmmer Krad and Kax in parotid benign tumors (including adenolymphoma) were lower than those in parotid malignant tumors. However, there was no significant difference between the two groups (P 0.05). The values of Kmeanma Krad and Kax in parotid benign tumors excluding adenolymphoma were lower than those in parotid malignant tumors (P 0.05). Kmean Krad and Kax of parotid mixed tumor were significantly lower than those of parotid malignant tumor and adenomatous lymphoma (P 0.05). The Kmean Krad and Kax values of parotid gland lymphoma were higher than those of parotid gland malignant tumors, but there was no significant difference between the two groups (P0.05. Kmean). The values of Krad and Kax were useful in differentiating mixed tumor of parotid gland from malignant tumor. The sensitivity and specificity of mixed tumor of parotid gland and adenomatous lymphoma are very high. Conclusion the quantitative parameters of DKI are helpful for differential diagnosis of parotid gland tumors of different pathological types.
【作者单位】：福建医科大学省立临床学院福建省立医院放射科;
【分类号】：R445.2;R739.8
【正文快照】： 腮腺肿瘤是临床上较为常见的头颈部肿瘤,常规MRI已成为腮腺肿瘤的主要影像学诊断方法之一,但是不同病理类型的腮腺肿瘤间缺乏特征性的形态学改变,常规MRI检查较难鉴别。近年来功能性MRI逐渐被应用于腮腺肿瘤的鉴别诊断[1-4],扩散峰度成像(diffusion　kurtosis　imaging,DKI)是

【相似文献】