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MRI is excellent for looking at scar tissue. MRI is able to distinguish between scar tissue and recurrent tumors. Therefore, breast MRI can evaluate a significant change in the lumpectomy site. It can determine how much cancer has spread beyond the surgical site after a breast biopsy or lumpectomy.
DWI MRI can detect ischemia much earlier than standard CT scanning or spin echo MRI can and provides useful data in patients with stroke or transient ischemic attack (TIA). (See the image below.) Magnetic resonance imaging (MRI) scan in a 70-year-old woman with a history of left-sided weakness for several hours.