Multiparametric MRI in differentiation between sinonasal inverted papilloma and malignant transformation of inverted papilloma / 中华放射学杂志
Chinese Journal of Radiology
;
(12): 500-504, 2017.
Article
in Chinese
| WPRIM
| ID: wpr-610874
ABSTRACT
Objective To identify the value of multiparametric MR imaging features including diffusion weighted (DW) and dynamic contrast-enhanced (DCE) MR imaging features in differentiation between inverted papilloma and malignant transformation of inverted papilloma in the sinonasal region.Methods Seventy-seven patients were included in this study,including 12 malignant transformation of inverted papilloma and 65 inverted papillomas.Conventional MRI including nonenhanced and static contrast-enhanced imaging,DCE-and the DW-MRI were analyzed.Differences in conventional MRI features,ADCs and DCE-MRI parameters between the two entities were determined by Fisher exact test,independent samples t-test and Mann-Whitney U test,respectively.Results There were significant differences in convoluted cerebriform pattern (P=0.045),necrosis (P=0.003) and orbit involvement (P< 0.01) between inverted papilloma and malignant transformation of inverted papilloma in the sinonasal region.The ADCs of inverted papilloma were significantly lower than those of malignant transformation of inverted papilloma (P<0.01).There were significant differences in time to peak enhancement (P<0.01),maximum contrast index (P=0.004) and time intensity curve types (P<0.01) between the two entities.Conclusions A multiparametric approach using conventional MR imaging with added ADCs and DCE-MRI parameters had the potential to improve the differentiation between inverted papilloma and malignant transformation of inverted papilloma in the sinonasal region.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Journal of Radiology
Year:
2017
Type:
Article
Similar
MEDLINE
...
LILACS
LIS