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MRI is very good at finding and pinpointing some cancers. An MRI with contrast dye is the best way to see brain tumors. Using MRI, doctors can sometimes tell if a tumor is benign (not cancer) or malignant (cancer).

MRI can also be used to look for signs that cancer may have metastasized (spread) from where it started to another part of the body.

Read more here>>http://www.cancer.org/treatment/understandingyourdiagnosis/examsandtestdescriptions/imagingradiologytests/imaging-radiology-tests-mri

MRI images can also help doctors plan treatment such as surgery or radiation therapy.

Special MRI machines, now available in some hospitals, are designed just for looking inside the breast. This is called an MRI with dedicated breast coils. Breast MRI is recommended along with mammograms to look for breast cancer in women at high risk for breast cancer. At this time MRI is not used by itself to detect breast cancer early. (If you want to learn more about this, read Breast Cancer: Early Detection online, or call us for a free copy.) Breast MRI can also be used in women who have already been diagnosed with breast cancer to better determine the actual size of the cancer and to look for any other cancers in the breast.