access icon openaccess Application of an RGBD augmented C-arm for minimally invasive scoliosis surgery assistance

Minimally invasive surgeries (MISs) are gaining popularity as alternatives to conventional open surgeries. In thoracoscopic scoliosis MIS, fluoroscopy is used to guide pedicle screw placement and to visualise the effect of the intervention on the spine curvature. However, cosmetic external appearance is the most important concern for patients, while correction of the spine and achieving coronal and sagittal trunk balance are the top priorities for surgeons. The authors present the feasibility study of the first intra-operative assistive system for scoliosis surgery composed of a single RGBD camera affixed on a C-arm which allows visualising in real time the surgery effects on the patient trunk surface in the transverse plane. They perform three feasibility experiments from simulated data based on scoliotic patients to live acquisition from non-scoliotic mannequin and person, all showing that the proposed system accuracy is comparable with scoliotic surface reconstruction state of art.

Inspec keywords: image sensors; surgery; bone; diagnostic radiography; diseases; medical robotics

Other keywords: transverse plane; nonscoliotic mannequin; scoliotic patients; single RGBD camera; coronal trunk balance; cosmetic external appearance; minimally invasive scoliosis surgery assistance; pedicle screw placement; patient trunk surface; thoracoscopic scoliosis MIS; spine curvature; first intraoperative assistive system; scoliotic surface reconstruction; sagittal trunk balance; RGBD augmented C-arm; live acquisition; fluoroscopy

Subjects: Patient care and treatment; Biological and medical control systems; Robotics; Patient care and treatment; X-rays and particle beams (medical uses); Patient diagnostic methods and instrumentation; X-ray techniques: radiography and computed tomography (biomedical imaging/measurement)

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