Stressful experience may result in the inception of asthma, exacerbations, and. inadequate control. In this article we explore the relationship between psy-. chologic stress as an exacerbating factor of asthma and the mechanisms through. which this relationship may exist.
That sort of thing takes months or years. As for brain surgery, many last several hours. If done right, the type of brain surgery known as Deep Brain Stimulation takes at least six or seven hours, to implant electrodes in the target area of the brain.
Each procedure will take between 30-45 minutes. Scanning times will vary, depending on the scanning protocol and machine at each facility. For a more accurate time frame, you should call the facility where you are scheduled and ask how long those exams take.A brain MRI shows brain tissue, ventricles, sinuses etc.t's also real loud, so if you can, bring those little foam ear plugs with you and put them in before hand. Hope it helps! http://wiki.answers.com/Q/How_long_does_an_mri_take. A complete scan, depending on the organs studied, sequences performed, and need for contrast enhancement may take up to one hour or more.