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Abstract #1480

The Preliminary Application of Quantitative Susceptibility Mapping in the T Staging of Rectal Cancer

Haini Zhang1, Yankai Meng1, Lu Han2, and Yongjun Cheng2
1The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China, 2Philips Healthcare, Shanghai, China

Synopsis

Keywords: fMRI Analysis, Cancer

Motivation: The T staging of rectal cancer mainly relies on high-resolution T2-weighted MRI sequences. However, there are cases of both over-staging and under-staging.

Goal(s): To investigate the preliminary application value of quantitative susceptibility mapping in the T staging of rectal cancer.

Approach: In addition to the conventional scanning sequences, horizontal axial T2-weighted imaging (T2WI) and QSM sequences were acquired. The tumor segmentation was done with reference to T2WI images at the QSM-weighted image. The magnetic susceptibility histogram data of tumor tissues were calculated with FireVoxel build 394D software.

Results: The differences of magnetic susceptibility histogram parameters in different T-stage rectal cancer were statistically significant.

Impact: Quantitative susceptibility histogram shows promise in aiding the T staging of rectal cancer.

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Keywords