Application of Field-of-View Optimized and Constrained Undistorted Single Shot (FOCUS) with Intravoxel Incoherent Motion (IVIM) in 3T in Locally Advanced Rectal Cancer

Figure 1

A 63-year-old woman with rectal cancer histopathologically diagnosed as poorly differentiated and stage T3 N2 cM0. (a) Axial T2-weighted MRI shows masses in the rectal wall. (b, c) Shows hyperintensity on FOCUS DWI and the diffusion trace image with a value of 1000 s/mm² of FOCUS IVIM. (d) The corresponding ADC, (e) pure diffusion coefficient , (f) pseudodiffusion coefficient , and (g) perfusion-related fraction maps of the tumor. (h) Axial T2-weighted MRI shows the normal rectal wall. (i, j) Shows isointensity on FOCUS DWI and the diffusion trace image with a value of 1000 s/mm² of FOCUS IVIM. (k) The corresponding ADC, (i) pure diffusion coefficient , (m) pseudodiffusion coefficient , and (n) perfusion-related fraction maps of the normal rectal wall.

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