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2014•Zhongguo linchuang baojian zazhiRequires access

Value of HR-MRI and DWI in preoperative staging of rectal cancer

Liu Yin

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Abstract

Objective To explore the value of HR-MRI,DWI sequence in preoperative staging of rectal cancer. Methods Retrospective analysis MRI of 28 patients with rectal cancer,identify TME related structures,using conventional sequence and its combination of HR-MRI,DWI sequence for TN-staging in patients with rectal cancer and comparison with the pathological results. Results Combined with HR-MRI,DWI sequence,the accuracy of T1 staging was 96. 43%,T2 was 85. 71%,T3 was 92. 86% and T4 was 100%,and the accuracy of N staging was82. 14%,the sensitivity was 87. 5% and Youden index was 0. 625. these parameters were obviously higher than these of the conventional sequence( P = 0. 012). Conclusion Combined with HR-MRI,DWI can obviously improve the accuracy of the preoperative T and N stage.

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Objective To explore the value of HR-MRI,DWI sequence in preoperative staging of rectal cancer. Methods Retrospective analysis MRI of 28 patients with rectal cancer,identify TME related structures,using conventional sequence and its combination of HR-MRI,DWI sequence for TN-staging in patients with rectal cancer and comparison with the pathological results. Results Combined with HR-MRI,DWI sequence,the accuracy of T1 staging was 96. 43%,T2 was 85. 71%,T3 was 92. 86% and T4 was 100%,and the accuracy of N staging was82. 14%,the sensitivity was 87. 5% and Youden index was 0. 625. these parameters were obviously higher than these of the conventional sequence( P = 0. 012). Conclusion Combined with HR-MRI,DWI can obviously improve the accuracy of the preoperative T and N stage.

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Available abstract

Objective To explore the value of HR-MRI,DWI sequence in preoperative staging of rectal cancer. Methods Retrospective analysis MRI of 28 patients with rectal cancer,identify TME related structures,using conventional sequence and its combination of HR-MRI,DWI sequence for TN-staging in patients with rectal cancer and comparison with the pathological results. Results Combined with HR-MRI,DWI sequence,the accuracy of T1 staging was 96. 43%,T2 was 85. 71%,T3 was 92. 86% and T4 was 100%,and the accuracy of N staging was82. 14%,the sensitivity was 87. 5% and Youden index was 0. 625. these parameters were obviously higher than these of the conventional sequence( P = 0. 012). Conclusion Combined with HR-MRI,DWI can obviously improve the accuracy of the preoperative T and N stage.

Key concepts: Medicine, Colorectal cancer, Radiology, Magnetic resonance imaging, Stage (stratigraphy), Nuclear medicine, Pathological, Cancer

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