Areas of the lungs outside the alveoli where gas exchange with the blood does not take place. During adulthood, explain why vital capacity changes with age. As one ages, the elastic fibers in the lung gradually decrease as well. elastance and greater compliance of the lungs.
Brain aneurysm: An mri/mra of the brain is an excellent screening test for the detection of even small (2-3 mm) brain aneurysms. Some neurosurgeons may recommend a ct angiogram of the brain or even a cerebral angiogram to be absolutely sure of the initial test results. Discuss the best option for you with a cerebrovascular neurosurgeon.
An MRA is a test that lets your doctor see inside your blood vessels -- your arteries and veins. MRA stands for Magnetic Resonance Angiogram or MR Angiography. Your doctor may ask you to get one in order to look for and treat problems with your blood vessels. The test can check the blood vessels in many different parts of your body: Brain or neck