Dentists use X-rays to check for cavities in the teeth. X-rays taken over the years can help your healthcare team tell if your arthritis is worsening. X-rays of the joints can show evidence of arthritis. In most cases, fractures and infections in bones and teeth show up clearly on X-rays. X-ray technology is used to examine many parts of the body. For example, precision measurements of a patient’s leg length can be measured from an EOS scan in place of a CT scanogram, which is traditionally used to measure limb length discrepancy.Īdvancements in clinical use cases for EOS continue to be investigated, and there may be additional CT scan alternatives soon.X-rays can locate metal objects your child has swallowed, such as this jack. In some cases, an EOS scan can be used in lieu of a CT scan. EOS can effectively replace standard X-rays in these instances and thereby reduce any risks associated with radiation exposure over their lifetime.ĮOS full-body imaging of a patient showing 2D X-ray images and 3D rendering of the spine, hips and leg bones. For some children and teens who require frequent imaging to monitor progress of a chronic skeletal or musculoskeletal condition (such as scoliosis), multiple doses of radiation from standard X-rays may unnecessarily increase their life-long radiation exposure. How much radiation does an EOS scan emit?Ī typical EOS scan at HSS has a radiation dose equivalent to about one-third that of the dose of a conventional X-ray of the same body parts.ĮOS is a pediatric-friendly scan. Technical parameters of the acquisition are adjusted by highly skilled radiology technologists for the size and age of the patient to maintain the lowest dose possible.This means that the particles of its rays are accurately parallel and travel in a narrow path, which exposes the patient to only a minimal number of X-rays. Very thin slots collimate the X-ray beam.Because fewer photons are required to produce the diagnostic image, fewer X-rays are needed to create a high-quality image. EOS uses a Nobel Prize-winning detector design capable of capturing more photons (X-rays) than a conventional X-ray detector.If a full-body image is not necessary (such as for a knee condition), the EOS system can be set to scan a particular region of the patient’s anatomy.Īn adolescent patient standing in the EOS low-dose imaging cabin. Capturing frontal and lateral (side-view), full-body images takes less than twenty seconds. Unlike traditional X-ray imaging, where the patient may have to be repositioned to get views from different angles, these two simultaneous scans provide all the imaging necessary. Two very narrow X-ray beams – one vertical, one horizontal – scan entire body to create 2D and 3D images of the spine and joints. How does EOS imaging work?ĭuring an EOS exam, the patient stands or sits in an upright position inside a special scanning cabin. This allows surgeons to perform highly precise presurgical planning and postsurgical assessment for hip replacement and knee replacement surgeries.ĮOS preoperative imaging of a patient with 3D renderings and measurement of a hip replacement implant. (A prescription is required.)ĮOS can also support orthopedic surgeons with their presurgical planning, because it records and displays the patient’s anatomical structures in their true, size and volume, lengths and angles.
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