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.
when you look into an mri and mra image of the same part of the body like the head there is a distinct difference between the two an mri would show the stationary parts of the body like the brain and the structures surrounding its each of them have their own uses that depend on what the condition is it is up to the doctor to choose which tool he would like to employ summary 1 an mri is a medical diagnostic tool that uses magnetism to look into the body while mra is a specialized technique of mri that focuses on blood vessels