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Bone Density Scan (DEXA)
A bone density scan measures the amount of bone mineral content in certain areas of the body. Our advanced fan beam technology measures the spine and both hips. Your bone mineral density (BMD) is then compared to reference standards to determine if you are at risk for fractures. Low bone density is usually caused by osteoporosis resulting in reduced bone strength or "brittle bones." Bone Density scanning works by measuring the amount of x-rays that are absorbed by the bones in your body. The two x-ray energies allow the machine to differentiate between bone and soft tissue density, giving a very accurate estimation of bone density. Our Radiologist will produce a report for your physician based on the bone density measurement and your medical history. Bone Density scanning has proven to be the most accurate methods of measuring bone density, uses the least amount of radiation, and is lower in cost than other methods. Why Is a Bone Density Scan Performed?
Osteoporosis is a silent, progressive disease that can have crippling effects on both women and men. There are 44 million men (20%) and women (80%) in the United States with either osteoporosis or low bone mass. Reduced bone strength can lead to fractures resulting in loss of mobility and independence. Osteoporosis is responsible for over 1.5 million fractures, of which 300,000 are hip fractures. The DEXA scan will provide valuable information on your bone mineral density and will even predict future fracture risk. Your physician will use the bone density scan information to decide if treatment for low bone mineral content or osteoporosis is necessary. What Can I Expect During A Bone Density Scan?
How Long Will My Bone Density Scan Take? The actual scan lasts about 15 minutes. Is Bone Density Scanning Safe? Norwalk Radiology utilizes "Dual Energy X-ray Absorptiometry" (DEXA) technology which offers an extremely low x-ray dose. The amount of radiation for a Bone Density scan is only a fraction of that received from a standard chest x-ray. It is comparable to the amount received on a transcontinental flight. The DEXA method produces less radiation than other methods such as QCT. Although DEXA emits a very low amount of radiation, always inform the technologist if there is a chance of pregnancy. Do I Need A Referral (Prescription) To Have My Bone Density Examination? Yes, your doctor must provide a referral (prescription) in order for you to receive a bone density scan. In addition, some insurance carriers or HMO's require a precertification. Please discuss this with your doctor and your insurance company or HMO prior to your test. Medicare requires a "Certificate of Medical Necessity" which your doctor will complete. When Will I Know The Results Of My Examination?
What Should I Do to Prepare for a Bone Density (DEXA) Scan Exam? Do not take calcium supplements the day of the exam. Wear any kind of clothing you like, but please avoid metal buttons or buckles. Where Can I Find Additional Information on the Internet About Osteoporosis and About Bone Density (DEXA) Scan Exams? |
Your examination may be the easiest medical test you will experience. Certified Technologists with specialty training in bone densitometry will conduct the exam. You will be positioned on the exam table on your back while a scanner passes over one area of your skeleton, usually the lower spine and hip. You will not feel anything during the exam. Lie still. Breathe normally. Rest comfortably.
Preliminary results will be sent promptly to your physician and a detailed written report of the procedure, findings, and results will follow within several days. Your physician will then call you to discuss the results.
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148 East Avenue, Norwalk, CT 06851 • Phone: (203) 838-4886