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Abstract #2173

DKI-based spatial heterogeneity analysis for tumor-infiltrating lymphocytes level in breast cancer patients

Ziyi Mao1, Hui Liu1, Haifa Liu1, Mengzhu Wang2, Yang Song2, Chengxiu Zhang3, and Guang Yang3
1Department of Radiology, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China, 2MR Research Collaboration, Siemens Healthineers Ltd, Beijing, China, 3East China Normal University, Shanghai, China

Synopsis

Keywords: DWI/DTI/DKI, Breast, DKI, TILs, intratumoral heterogeneity

Motivation: Verification that DKI can accurately yet noninvasively detect intratumoral complexity, water diffusion, and lesion heterogeneity information, without contrast agents or biopsy, would encourage wider application of this technique.

Goal(s): To ascertain the performance of the TILs level prediction model.

Approach: A DKI-based tumor survival environment model was developed and used for predicting TILs level in breast cancer patients. Tumors segmented in microscopic habitat clusters were explored for heterogeneity with DKI data.

Results: First order features extracted from tumor clusters based on DKI data can properly predict TILs level.

Impact: The stable predictive performance of DKI/TILs can help clinicians make more accurate diagnoses; commercialization is expected.

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Keywords