- Why You May Need a Bone Density Scan
- What to Expect During a Bone Density Scan
- How to Prepare for a DEXA Scan
Why You May Need a Bone Density Scan
Bone density naturally decreases with age, and conditions like osteoporosis can develop silently until a fracture occurs. Early detection through bone density scans is essential for:- Diagnosing osteoporosis or osteopenia
- Identifying individuals at high risk of fractures
- Tracking bone loss over time
- Assessing the effectiveness of osteoporosis treatment
- Monitoring patients with conditions that affect bone health (e.g. rheumatoid arthritis, long-term steroid use)
How DEXA Bone Density Scans Work
The DEXA scanner uses two low-dose X-ray beams that pass through the bones and calculate the mineral content in specific areas, typically the spine, hip, and forearm. These areas are most prone to fracture and provide reliable indicators of overall bone health. Results from the scan are presented in the form of:- T-scores: Compare your bone density to that of a healthy young adult.
- Z-scores: Compare your bone density to others of your age, sex, and body size.
- Normal
- Osteopenic (low bone mass)
- Osteoporotic (high fracture risk)
What to Expect During a Bone Density Scan
- Arrival and Preparation: You’ll be asked to change into a procedure gown and remove any metal objects (e.g. belts, jewellery) that may interfere with the scan.
- Positioning: You'll lie on a padded procedure table. The scan typically covers the spine and hip. In cases where those areas cannot be scanned (e.g. due to surgery or implants), your forearm may be assessed instead.
- Imaging: A scanning arm moves slowly over the body while the table remains stationary. It is essential to maintain the position instructed by the technician.
- Duration: The scan is painless and usually takes 15–20 minutes.
- Results: The scan will be reviewed, and results are typically available within an hour. Your referring doctor will discuss these findings with you.
How to Prepare for a DEXA Scan
To ensure accurate and efficient testing, please follow these preparation guidelines:- Doctor’s Referral Required: You will need a referral note from your healthcare provider.
- Calcium Supplement Notice: Avoid taking calcium supplements for at least 24 hours before your appointment, as they may affect scan results.
- Pre-Scan Questionnaire: You’ll be asked to complete a brief questionnaire. Please answer honestly; it helps provide context to your scan results.
- Pregnancy Alert: Even though DEXA uses very low radiation, the procedure is not recommended if you are pregnant.
- Billing and Medical Aid: You do not require pre-authorisation unless your medical scheme dictates otherwise. The account will be submitted to your medical aid, but any shortfalls remain your responsibility. Private patients are required to settle their accounts on the day of the procedure.
Why Bone Density Scans Matter
Bone health is easy to ignore until a serious injury occurs. A bone density scan empowers you and your doctor to take proactive steps toward fracture prevention and osteoporosis management. If you are over 50, have a family history of osteoporosis, or have risk factors such as long-term corticosteroid use, smoking, or hormonal imbalances, a DEXA scan is strongly recommended.AVAILABLE AT THE FOLLOWING BRANCHES
Sunward Park Hospital
Femrad MediMix
Femrad Bedford
Bone Density Scans (DEXA)
A bone density scan, also known as bone densitometry or DEXA scan, is a specialised imaging test used to measure your bone mineral density (BMD). This diagnostic procedure plays a crucial role in identifying osteoporosis, determining fracture risk, and monitoring treatment progress in individuals affected by bone demineralisation.
DEXA (Dual-Energy X-ray Absorptiometry) is the most advanced and reliable technology for performing bone density scans, using low-dose X-ray radiation to provide detailed insights into bone strength and structure.
Book Your Bone Density Scan Today
Protect your bone health before it’s too late. A quick, painless bone density scan could make all the difference in your long-term well-being. Early diagnosis = better outcomes.
Contact us for more information and preparation requirements. Book your bone density scan today for peace of mind and proactive care. Your future mobility may depend on it.