Bone Densitometry (DEXA)

Bone Densitometry (DEXA) is currently the most widely used method for measuring the structural integrity of bones. A DEXA scan documents small changes in your bone mass and is most often used to diagnose osteoporosis, a condition that often affects women after menopause but may also be found in men and younger women.

The evaluation of bone health has become an essential component of your personal wellness.

Don’t let osteoporosis sneak into your bones. Let Star MRI of Wayne do your bone density study to stay ahead of this weakening process.

How does DEXA work?

During a DEXA exam the patient lies face up, on a comfortably padded table.

For the test to be accurate, you will need to remain as still as possible during the exam, but will be able to breathe normally. Scanning the spine and femur, sites where fractures occur most often, is considered the standard examination for assessment of osteoporosis. You will not feel anything during the exam as the scanner passes over your lower spine, hip or forearm. The entire test takes only a few minutes to complete. It is a non-invasive procedure that is painless and requires no injections.


Eat normally on the day of the exam, but avoid calcium and vitamin D supplements for at least 48 hours beforehand. If possible, avoid wearing clothing with metal items (buttons, zippers, etc.).

Please inform your physician if you recently had a barium study, a nuclear medicine or oral/intravenous contrast material (such as for an MRI or CT scan). These contrast materials will interfere with the DEXA examination. You may have to wait 10 to 14 days before undergoing your exam. Women should always inform their physician and DEXA Technologist, if there is a possibility they are pregnant.

Common Risk Factors for Osteoporosis

  • Being female
  • Thin and / or small frame
  • Advanced age
  • Family history of osteoporosis
  • Postmenopausal, including early or surgically induced menopause
  • Abnormal absence of menstrual periods
  • Eating disorders
  • A diet low in calcium
  • Use of certain medications, such a steroids
  • Low testosterone in men
  • Inactive life-style
  • Cigarette smoking
  • Excessive use of alcohol

Radiology Center of Fair Lawn’s Bone Denisty

The Hologic Discovery QDR bone densitometer operates with exceptional precision and accuracy.

  • High Resolution Digital Detector Array – To improve fracture detection and to visualize abdominal aortic calcifications.
  • Speed and Image Quality – Discovery imaging technology captures the hip and spine with as fast as 10-second regional scanning time.
  • Superb Visualization1 – The Discovery system’s exclusive design utilizes a high resolution detector array paired with true fan-beam linear acquisition geometry.
  • Consistency from Exam to Exam – The Discovery system performs continuous, automatic calibration, ensuring precise measurements results from exam to exam.

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