Diagnostic value of cervical metastatic lymph nodes by T1 perfusion-weighted imaging and the effect of age on perfusion
10.3969/j.issn.1002-1671.2014.04.010
- VernacularTitle:T1灌注加权成像对颈部转移性淋巴结的诊断价值以及年龄因素对灌注分析的影响
- Author:
Mengyun SHI
;
Nan XU
;
Kai SONG
;
Bin YANG
;
Wei ZHAO
;
Yaying YANG
- Publication Type:Journal Article
- Keywords:
lymph nodes;
perfusion-weighted imaging;
time signal curve
- From:
Journal of Practical Radiology
2014;(4):580-583,612
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of cervical metastatic lymph nodes by T1 perfusion-weighted imaging and analyse the effect of age on perfusion.Methods 18 cases of cervical lymph node metastasis (case group)and 30 healthy people (control group)were performed T1 perfusion-weighted imaging.The semi-quantitative parameters (including in maximum relative enhancement ratio,wash in rate,wash out rate and peak time)and time-intensity curve (TIC)were compared between case group and control group.Moreover,the effect of age on perfusion was investigated by the age of 40 years old.Results The inflow rate was statistically significant difference between the two groups (P<0.05)and that of 23 cases of metastatic lymph nodes was higher than 49 normal lymph nodes.However,the maximum relative enhancement ratio,outflow rate and peak time weren’t statistically signif-icant difference(P>0.05).The time-intensity curve in metastatic lymph nodes and normal lymph nodes were common in typeⅡ. The maximum relative enhancement ratio and wash in rate negatively correlated with the age and the maximum relative enhancement ratio and wash in rate below the age of 40 years old were higher than above the age 40.Conclusion The wash in rate is helpful to dif-ferentiate metastatic lymph nodes and normal lymph nodes.The effect of age on perfusion is considered.
