Procedure: MRI brain
Brain metastases are a medical condition in which cancer cells spread from the original site to the brain. In approx. 15 % of the people suffering from cancer or having a history of cancer, brain metastases represent the most common neurologic manifestation of cancer.
Prominently those with lung cancer, breast cancer, and melanoma (39%, 17%, and 11%, separately) generally represent patients with cerebrum metastases.
Metastatic lesions show isointense nature to mildly hypointense on T1-weighted images and are hyperintense on T2-weighted images or with fluid attenuation inversion recovery.
Encompassing edema is moderately hypointense on T1-weighted images and is hyperintense on T2-weighted images.
Hemorrhagic melanoma lesions or melanoma lesions are hyperintense on T1-weighted images. On T2-weighted images, mucinous adenocarcinoma can be hypointense, results in calcification; hemorrhagic metastases can be hypointense, and results in the chronic breakdown of blood products.
Following the organization of a contrast media, solid, nodular or irregular ring examples of the upgrade are seen. Non-upgrading sores are more averse to be metastases.