Predictive value of balanced steady-state free precession MRI combined with IVIM-DWI and Gd-DTPA enhancement for extramural vascular status in rectal cancer
10.3969/j.issn.1009-9905.2024.05.007
- VernacularTitle:MRI平衡式稳态自由进动序列协同IVIM-DWI、Gd-DTPA增强对直肠癌壁外血管状态的预测价值
- Author:
Jun ZHANG
1
;
Hai-Qing ZHANG
;
Yan-Jun LIU
;
Peng XIA
;
Bing YU
;
Hui-Jie ZHA
Author Information
1. 安徽省庐江县人民医院影像科(安徽 合肥 231500)
- Keywords:
Rectal cancer;
Balanced steady state free precession;
Diffusion capacity imaging;
Magnetic resonance enhancement;
Extramural vessels
- From:
Chinese Journal of Current Advances in General Surgery
2024;27(5):369-372
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the predictive value of MRI balanced steady-state free precession(b SSFP)synergistic voxel incoherent motion diffusion weighted imaging(IVIM-DWI)and Gd-DTPA enhanced scanning for the status of extramural vascular invasion(EMVI)in rectal cancer before surgery.Methods:A total of 105 rectal cancer patients from the People's Hospital of Lujiang County,Anhui Province,were retrospectively selected and included.All patients were confirmed by postoperative pathology and underwent preoperative b SSFP sequences,IVIM-DWI functional imaging,and Gd-DTPA-enhanced multiparameter MRI scans.Three seven-point schemes based on individual b SSFP sequences,IVIM-DWI functional imaging,and Gd-DTPA en-hancement,two-by-two synergy,and multi-sequence combined diagnosis were utilized in con-junction with conventional MRI sequences for preoperative prediction of EMVI status.The diag-nostic efficacy of T2WI and b SSFP sequences was compared with that of postoperative patho-logic results.ROC curves were plotted to obtain the corresponding area under the ROC curve(AUC),specificity,and sensitivity.Results:The AUC for predicting the preoperative vascular status outside the rectal wall was 0.572(95％CI:0.408～0.737)for the conventional T2 lipid sup-pression sequence,with a specificity of 0.811 and a sensitivity of 0.667.The AUC for the b SSPF sequence was 0.817(95％CI:0.680～0.954),with a specificity of 0.900 and a sensitivity of 0.733.All of the statistical parameters were higher than the diagnostic efficacy of conventional T2 lipid suppression sequences.The multi-sequence MRI co-diagnosis had an AUC of 0.961(95％CI:0.886～1.000),with a specificity of 0.988 and a sensitivity of 0.875(P＜0.05).Conclusion:Mag-netic resonance b SSFP sequence synergized with IVIM-DWI and Gd-DTPA-enhanced multipa-rameter scanning has high clinical application value for the preoperative prediction of EMVI inva-sion in rectal cancer.
