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DXA

Our DXA Technology

Hologic takes advanced health assessment to a new level with DXA systems that feature the latest innovations in bone densitometry technology. These multi-faceted systems can help clinicians assess bone health, body composition and cardiovascular risk — critical elements that will help patients keep life in motion.

 

WHAT IS BONE DENSITOMETRY

Bone Densitometry is a radiology procedure that determines bone mineral density or bone mass. A dedicated dual energy xray absorptiometry (DEXA) unit will be used to produce x-ray images of the spine and hip. The unit will generate a computerized report that will include an image of the tested area, the bone mineral density measurement, and the T-score, which is a comparison to the peak bone mass measurements in a young population of the same gender and race.

Bone mass measurement studies provide information that will determine your risk of fractures and/or osteoporosis. If you are diagnosed with osteoporosis, your doctor may start a treatment plan to slow down or stop bone loss and reduce your risk of fracture.

 

ABOUT OSTEOPEROSIS

Osteoporosis means “porous bone.” It is a disease in which the bones have less substance and decreased bone density. A drop in the calcium content of bone is natural and occurs with aging, but can become critical if the original calcium level is too low, or if bone loss is too fast. People with osteoporosis are at an increased risk of fractures, especially to the hip, spine, and wrist.

Risk factors for developing osteoporosis include:

  • post-menopausal
  • early menopausal (before age 45)
  • surgical menopause
  • age
  • previous fracture
  • family history of osteoporisis
  • medications such as steroids or thyroid hormones
  • Caucasian/Asian descent
  • thin, small build
  • smoking or alcohol abuse
  • inactive lifestyle
  • inadequate calcium intake

WHAT TO EXPECT

During a comprehensive examination with DXA, you will lay comfortably on a padded table while the DXA unit scans two or more areas, usually the fracture-prone hip and spine. Unlike typical x-ray machines, radiation exposure during bone densitometry is extremely low. The entire process takes only minutes to complete. It involves no injections or invasive procedures.

WHAT IS BODY COMPOSITION

Advanced Body Composition assessment produces images displaying the distribution of fat, lean tissue and bone translating the information into an easy to interpret report. One of the key factors is Fat Mass index (FMI) an obesity classification scheme which measures the ratio of fat mass to height squared. Just like Body Mass Index (BMI), FMI is expressed in units of kg/m. FMI may be a better indicator of obesity than BMI because FMI is based on fat mass, not body weight, which is composed of both fat and lean constituents.

 

WHAT TO EXPECT

The body composition is a quick three to five minute scan. Patients receive a low does x-ray while lying on a comfortable padded table. There are no injections and it is non-invasive and painless. After the scan patients receive a detailed color report to give to their referring physician.