The doctor may choose to conduct MAGNETIC RESONANCE IMAGING (MRI) or COMPUTED TOMOGRAPHY (CT) SCAN when there is a cavernous hemangioma because this kind of blood vessel tumor (noncancerous) can occur within internal organs such as the LIVER or BRAIN and creates a risk for HEMORRHAGE (uncontrolled bleeding), or the doctor may perform a biopsy (take a tissue sample to examine under a microscope) of