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Bone density scanning, also called dual energy x-ray absorptiometry (DXA or DEXA) or bone densitometry, is the most widely used method to measure bone mineral density and is the only method that can make a definitive diagnosis of osteoporosis and monitor a patient’s response to treatment. It is an enhanced form of x-ray technology that requires no injections, sedation, special diet or any other advance preparation and the test is performed by a physician or technician in about 30 minutes. DEXA is most often performed on the lower spine and hips. Portable DEXA devices, including some that use ultrasound waves rather than x-rays, measure the wrist, fingers or heel and are sometimes used for screening purposes. There is some controversy over which bones are best to use for bone density measurements. DEXA is most often performed on the lower spine and hip, which are the bones most commonly used during screening exams. In special cases, bones in the wrist, fingers or hee...
Over the past couple of years, a number of headlines have been published about the significant toll that concussions have taken on retired pro football players’ brains. In some ways, this news wasn’t so surprising when you watch the National Football League’s highlight reels that show absolutely brutal hits that cause a player’s head to snap back or that result in a player landing on his head.
But what about younger players who aren’t playing at the professional level? Are they experiencing any issues with their brains? A new study out of the Laureate Institute for Brain Research in Tulsa, OK tried to determine whether participation in football at lower levels could have a lasting effect on the brain’s hippocampal region or cognitive performance.
First, let’s review where the hippocampus region is in the brain and its responsibilities. This region is located in medial temporal lobe that is found in the front part of the brain. The hippocampus ...
V/Q scan; Ventilation/perfusion scan; Lung ventilation/perfusion scan
The health care provider should take a ventilation and perfusion scan and then evaluate it with a chest x-ray. All parts of both lungs should take up the radioisotope evenly.
What abnormal results mean
If the lungs take up lower than normal amounts of radioisotope during a ventilation or perfusion scan, it may be due to:
Chronic obstructive pulmonary disease (COPD)
Narrowing of the pulmonary artery
Reduced breathing and ventilation ability
You should know
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