1 Some brain cancers occur when one type of cell transforms from its normal characteristics. 2  Once transformed, the cells grow and multiply in abnormal ways. 3  As these abnormal cells grow, they become a mass, or tumor. 4  The brain tumors that result are called primary brain tumors because they originate in the brain.etastatic brain tumors are made of cancerous cells from a tumor elsewhere in the body. The cells spread to the brain from another tumor in a process called metastasis. This is the most common type of brain tumor.
How Long Does a Stress Test Take? While the exercise stress test itself usually takes around 10 or 15 minutes, part one of the test takes about 30 or 45 minutes total. Dr. Willke suggests blocking off most of your morning, because you will need to go in for follow-up photos about two hours later, for the second part of the test.
After the test, youâll walk or pedal slowly for a couple of minutes to cool down. Your heart rate, blood pressure, and EKG will continue to be monitored until the levels begin returning to normal. Although the appointment lasts about 60 minutes, the exercise time is usually between 7 and 12 minutes. Ask your doctor if you have any questions about the exercise stress test.