Quantitative perfusion parameters of dynamic contrast-enhanced magne-tic resonance imaging in patients with rectal cancer:estimation of the mi-crovascular perfusion and permeability
10.3969/j.issn.1000-4718.2015.12.009
- VernacularTitle:定量磁共振灌注成像用于评价直肠癌的微血管灌注及渗透性
- Author:
Xiaojuan XIAO
;
Baolan LU
;
Xinyue YANG
;
Ying WANG
;
Xubin LIU
;
Fengyi ZHAI
;
Shenping YU
- Publication Type:Journal Article
- Keywords:
Rectal cancer;
Magnetic resonance perfusion imaging;
Microvascular perfusion;
Permeability
- From:
Chinese Journal of Pathophysiology
2015;(12):2164-2168
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To investigate the perfusion parameters using dynamic contrast-enhanced magnetic resonance imaging ( DCE-MRI) in rectal cancer patients so as to explore its potential value in estimating the microvascular condition including perfusion and permeability .METHODS:The data of 38 rectal cancer patients examined with DCE-MRI was ret-rospectively analyzed .The perfusion parameters of carcinoma and normal rectal wall in each case were calculated , inclu-ding volume transfer constant (Ktrans), rate constant of back flux (Kep), extravascular extracellular space fractional volume (Ve) and initial area under curve (iAUC).The mean values of tumor and normal rectal wall , mucinous and nonmucinous carcinoma, poorly and moderately-to-well differentiated carcinoma , case with or without lymph node metastasis were com-pared.RESULTS:All the parameters of rectal cancer were higher than normal rectal wall (P<0.01).No significant difference was found between poorly and moderately-to-well differentiated carcinoma in terms of K trans, Kep and Ve, neither was the case with or without lymph node metastasis .The cases with lymph node metastasis had lower iAUC than those with-out (P<0.05).CONCLUSION:Quantitative perfusion DCE-MRI answered the microvascular perfusion and permeability change of rectal cancer compared with normal rectal wall , besides it could be used to distinguish between mucinous and nonmucinous carcinoma , which demonstrated its value in the evaluation of rectal cancer .However , it should not be recom-mended to predict the degrees of tumor cell differentiation and lymph node metastasis just according to the perfusion param -eters.
