Answer:
----The three primary health benefits of UV exposure are the production of vitamin D, improvement in mood, and increased energy. Moderate exposure to UV radiation is a good source of vitamin D. This vitamin aids in the regulation of calcium metabolism, insulin secretion, blood pressure, immunity, and cell propagation.
-----noninvasively and painlessly help to diagnose disease and monitor therapy
support medical and surgical treatment planning; and.
guide medical personnel as they insert catheters, stents, or other devices inside the body, treat tumors, or remove blood clots or other blockages.
-----No electrical or water supplies needed.
Equipment smaller and lighter.
More portable.
Equipment simpler and more robust.
More easily accessed.
Less scatter.
Equipment initially less costly.
Greater penetrating power.
