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Note: This chart simplifies a highly complex topic for patients’ informational use. The effective doses are typical values for an average-sized adult. The actual dose can vary substantially, depending on a person’s size as well as on differences in imaging practices.
For a spine plus femur DEXA scan, the effective dose varies from less than 1 μSv to about 15 μSv. In pencil beam systems the dose is generally less than 1 μSv, while values between 1 to 10 μSv have been reported for fan beam systems.
Radiation Dose from Common Imaging Examinations. Note: This chart simplifies a highly complex topic for patients’ informational use. The efective doses are typical values for an average-sized adult. The actual dose can vary substantially, depending on a person’s size as well as on diferences in imaging practices.
Bone densitometry, also called dual-energy x-ray absorptiometry, DEXA or DXA, uses a very small dose of ionizing radiation to produce pictures of the inside of the body (usually the lower (or lumbar) spine and hips) to measure bone loss.
20 Μαΐ 2024 · Dual-energy x-ray absorptiometry is comparatively inexpensive, with notably shorter scan times and lower radiation exposure compared to other imaging options. A long-standing international consensus exists regarding guidelines for interpreting dual-energy x-ray absorptiometry images.
20 Νοε 2020 · Here are some effective doses associated with DEXA and a few other exams in diagnostic radiology for comparison: DEXA—Lumbar spine and hip 0.001 mSv; DEXA—Whole body 0.003 mSv; Extremity (hand, foot, etc.) x ray—0.001 mSv; Dental X Ray—0.005 mSv; Chest X Ray—0.1 mSv; Spine Computed Tomography (CT) Scan—6 mSv; Abdomen and Pelvis CT ...
24 Σεπ 2024 · VFA utilises low radiation dose imaging of the lateral lumbar and thoracic spine that can be acquired at the time of BMD measurement on DXA. VFA is performed for the purpose of diagnosing vertebral fractures with the range of evaluable vertebral bodies from about T4 to L4.
