Restriction Spectrum Imaging (RSI)

Through our partnership with CorTechs Labs, prostate MRI at IHS uses a unique diffusion technique called Restriction Spectrum Imaging (RSI) along with artificial intelligence. RSI is a post-processing software for multiparametric prostate MRI (mpMRI) images. It leverages an advanced diffusion MRI technique and utilizes artificial intelligence to enable greater accuracy in differentiating prostate cancer from normal prostate tissue. This provides valuable information that helps our doctors to differentiate between clinically significant, aggressive cancer and less threatening, slower-growing cancer. We are the only regional imaging center network to offer this advanced technology on all prostate MRI exams.

Improved Detection

This technology improves prostate cancer detection over mpMRI alone, giving you and your doctor an added measure of confidence in your prostate diagnosis. In fact, when mpMRI is combined with RSI, it achieves 85% accuracy versus 79% accuracy with mpMRI alone.
RSI + MRI Technology

Patient had previous MRI scan, but did not move on to biopsy. After adding RSI, RSI clearly shows positive posterior midline mid peripheral zone, while at same location DWI is faintly hyperintense, and ADC is moderately hypointense. RSI abnormality informs designation of PI-RADS 4.