AUGMENTET REALITY APPARATUS AND CT METHOD

摘要

An image overlay system to assist surgical interventions inside a conventional CT scanner is disclosed. The overlay system is mounted non-invasively on the gantry of the CT scanner. The system includes a flat LCD overlay display, a half-mirror, a mechanism to aid the placement of surgical devices, and an adjustable passive holding attachment mounted on the CT scanner that supports the LCD display and half-mirror. In a pre-operative calibration process, the display, half-mirror and imaging plane of the scanner are spatially registered by imaging a calibration object. Following the calibration, the patient is brought into the scanner, and slice images are acquired and sent to the overlay display. Looking at the patient through the half-mirror, the CT slice image appears to be floating inside the patient in correct size and position. This vision enables the physician to see both the surface and the inside of the patient at the same time, which can be used in guiding a surgical intervention.