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How it works
EOS is an advanced X-ray system that captures high-resolution images while you are standing in a natural, weight-bearing position.
The system captures simultaneous front and side images in a single scan. This allows practitioners to assess posture, alignment and weight distribution under normal load.
EOS can capture the entire skeleton, helping practitioners understand how the spine, pelvis, hips, knees and lower limbs work together.
EOS imaging may be used to assess:
- Spine conditions, including scoliosis
- Hip and knee alignment
- Posture and overall skeletal balance
- Joint replacements
- Pre- and post-surgical alignment
What to expect
An EOS scan is quick and straightforward.
You will be asked to stand in a natural position on an open gantry while the images are acquired. You will be in the scan room for around 2-3 minutes. This is the total in-room time, including being positioned for the scan and the acquisition of the images.
Utilising state-of–the-art photon counting detectors, EOS uses a lower radiation dose than conventional specialised X-rays. This makes it particularly beneficial for children and patients who require ongoing monitoring.
Day of the scan
- Prior to scan. No special preparation is required unless your doctor advises otherwise.
- You may be asked to change into a gown and remove metal items such as watches, earrings and chains. Alternatively, wear clothing without zippers, buttons, clips or embroidery.
- Bring any brace prescribed by your practitioner if you have been advised to wear it during the scan.
- You will stand in a natural position on the open gantry and hold a horizontal handle for support.
- You will need to remain still while the scanner captures simultaneous front and side images. The scan itself takes approximately 5–20 seconds.
- After the scan, you can change and return to reception. Your images will be analysed and sent electronically to your referring practitioner.
Frequently asked questions
Do I need a referral?
Yes. You need a referral from your GP, Physiotherapist, Chiropractor, Osteopath or specialist.
How is EOS different from a standard X-ray?
EOS captures low-dose high-resolution front and side images, using cutting-edge photon counting detectors while you are standing in a natural, weight-bearing position. This allows practitioners to assess posture, alignment and weight distribution across the body under normal load.
What conditions can EOS imaging help assess?
EOS imaging may be used to assess scoliosis, hip and knee alignment, posture, skeletal balance and joint replacements. It can also support pre- and post-surgical planning and ongoing monitoring.
Does EOS use less radiation than a conventional X-ray?
EOS uses a significantly lower radiation dose than conventional specialised X-rays. State-of-the-art photon counting detectors are a new technology that require less radiation interaction to produce the image. This can be particularly beneficial for children and patients who require repeat imaging.
How long does an EOS scan take?
The scan itself usually takes between 5-20 seconds. You will be in the room for a few minutes.
Is the EOS scanner enclosed?
No. You stand on an open gantry, similar to standing in a doorway during the scan. Its open design provides easy access and can offer a more comfortable experience for children, older adults and people with limited mobility.
Does EOS produce 3D images?
EOS captures calibrated front and side images of the body. Optional 3D modelling tools can use these images to support precise measurements, surgical planning and treatment evaluation.