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What is a DEXA scan?


A DEXA (Dual-Energy X-ray Absorptiometry) scan is a quick, low dose imaging test used to assess either bone density or body composition.

DEXA scans are simple, non-invasive, and painless, providing accurate information to support your health.

In this section

Canopy Imaging offers 2 types of DEXA scans...

Bone Density Scans

A bone density scan measures bone mineral density using low-energy X-rays, helping to diagnose osteoporosis and assess fracture risk.

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Body Composition Scan

A body composition scan measures the proportions of fat, muscle, and bone in your body, providing detailed information about your body composition.

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Why might I need a bone density scan?  

Your doctor may recommend a DEXA scan to:

  • Check for osteoporosis (weak or thinning bones)
  • Assess your risk of fractures
  • Monitor changes in your bone density over time
  • Track how well treatment for osteoporosis is working

Early detection is important, as bone loss can occur without symptoms.

What are the benefits of a bone density scan?

  • Quick and painless procedure
  • Uses very low levels of radiation
  • Detects bone loss early, before a fracture occurs
  • Confirm a diagnosis of osteoporosis
  • Can monitor changes in bone health over time
  • Helps your doctor plan treatment and prevention

What is Osteoporosis?

Osteoporosis is a condition where bones become thinner and weaker, increasing the risk of fractures.

It can affect both men and women, but is more common with age and after menopause.

Am I at risk?

You may be at increased risk of low bone density if you:
  • are female
  • are over 50 or post-menopausal
  • have a small or thin frame
  • have a family history of osteoporosis
  • have a history of anorexia nervosa or bulimia
  • take certain medications , (e.g. steroids, anticonvulsants, thyroxine)
  • have low testosterone levels (in men)
  • have a sedentary lifestyle
  • smoke cigarettes
  • drink excessive alcohol 
  • have problems absorbing nutrients (malabsorption) 
  • have a diet low in calcium
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Where can I get a bone densitometry done?

We have multiple locations available for bone density scans throughout New Zealand;

Please select your location on the right to contact us.

Bone Density scans (DEXA) are not performed by Canopy Imaging in Auckland. However, Auckland Bone Density Service uses our facilities. You will need to book your appointment directly with them.

Please select your location to contact us

Pre Examination

Before your examination

  • Please wear clothing without buckles, buttons or zips.
  • Please call us to make an appointment for your scan.
  • If you have a referral from your doctor please bring this with you.
  • You are able to self-refer for this test if you wish but we recommend you send a copy of your report to your doctor to enable it to be added to your medical file.

Your Examination

When you have your scan a skilled, qualified technician will ask you to lie on a special bed. You will hear a quiet machine noise and a scanning arm will move above you, but will not touch you. The technician will tell you when the scan is finished.

Post Examination

Your scan results will be interpreted by the Radiologist and a report will be sent directly to your doctor who will discuss the results with you.

FAQs

Self-referral is available for postmenopausal females and males over 50 years of age.

You can also be referred by your GP or specialist if required.

Bone density scans are available at Canopy Imaging in Whangarei, Rotorua, Hawke's Bay, Taranaki and Palmerston North.

Yes, bone density scans use very low levels of radiation and are considered safe for most people.

The scan typically takes between 10 and 20 minutes.

No, the scan is painless and non-invasive.

Very little preparation is needed. You may be asked to avoid wearing clothing with metal.

A report will be sent to your doctor, who will discuss the results with you.