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.
MRI with magnetic resonance angiography (MRA) has been a major advance in the neuroimaging of stroke. MRI not only provides great structural detail but also can demonstrate early cerebral edema. In addition, MRI has proved to be sensitive for detection of acute intracranial hemorrhage.