sterEOS
A Radically New Vision for Muskuloskeletal Imaging
For decades, radiologists, orthopaedic surgeons and rheumatologists have relied on a set of X-ray images to fully assess apatient’s osteoarticular condition. AP and LAT views have been used to help physicians imagine what a 3D skeletalimage would look like.
Now, using only two orthogonal views, the EOS workstation "sterEOS" can create a 3D rendering of the skeletal anatomy. With high accuracy clinical parameters, sterEOS delivers a large size 3D weight bearing image, at an irradiation cost which is more than 100times below that of a 3D CT scan2.
Bone surface 3D modeling, in weight-bearing position, at no extra dose exposure
EOS 3D images are created via unique, patented software involving algorithms that use statistical modeling and shape recognition techniques to create an accurate rendering from only two planar images. 3D skeletal envelope images can be obtained for the spine, the femur and the tibia. No additional radiation is required– reducing dose exposure at an irradiation cost which is more than 100 times below that of a 3D CT scan2. Unlike CT, EOS images are acquired in an upright position, enabling improved diagnosis available only with weight bearing positioning.
sterEOS 3D modeling allows the display of bone position, rotation and orientation. It also enables the display in different perspectives, together with accurate clinical parameters for pre- and post-op surgical planning.
Clinical
Diagnostic and therapy planning rely on precise images and easy to use clinical parameter measurement tools. Until now, measurements have been made from projected, 2D radiographs.
Actual angles and dimensions in the patient body are 3-dimensional, and are modified by the projection and associated distortions and zoom effects. This results for 2D-based measurements in errors, leading to inadequate planning and potential additional costs during surgery. Torsions and rotations could not be assessed from 2D radiographs and required additional CT exams.
Now with EOS weight bearing 3D imaging, key clinical parameters are obtained in seconds in 3D and 2D. Planning sessions are easier, faster and well documented.
Automatic measurements
Over 100 clinically relevant angle and length measurements are automatically calculated from the spine and lower limb 3D modeling, leading physicians to more accurately evaluate the patient condition and better map their path to recovery.
Access to accurate measurements independent from the acquisition conditions
sterEOS 3D measurements reduce errors due to incorrect patient positioning during acquisition. In this case, the patient's 15° pelvicrotation with respect to the AP X-ray plane will have no impact on the set of clinical parameters measured with sterEOS.
3D
Besides providing a full model of the spine, hip or knee, sterEOS allows for measurements in 3D using the correlated planar AP/PA and LAT images. User friendly geometrical tools can be used to measure true 3D distances, angles, and diameters between anatomical landmarks observed in the two planar views.
Patient Report
sterEOS 3D workstation generates a patient report including selected EOS X-ray images, 3D models and clinical parameters.
