Patent ID: 6173035
Filing Date: 2001-01-09
Classification: A61B

Abstract:
A digital sensor cassette for a panoramic radiographic apparatus having a support for rotatably supporting a rotary arm provided with an X-ray generator at one end of and an X-ray detector at the other end thereof, mounted in said X-ray detector, comprising at least one electric X-ray image detector disposed in face-to-face relationship with said X-ray generator via an X-ray shield plate having a secondary slit and provided at said X-ray detector, driven based upon TDI control by control signals supplied from the main body of said panoramic radiographic apparatus in correspondence with the rotation of said rotary arm, and used to convert X-rays to electric signals to deliver image signals required for generating a panoramic X-ray image, electric X-ray signal detector being provided behind said secondary slit; an A/D converter for converting analog signals delivered from said electric X-ray image detector into digital signals; an input/output portion for communicating with an external circuit; and a control portion for electrically controlling the operations of said electric X-ray image detector, A/D converter and input/output portion; wherein said electric X-ray image detector comprises an image pick-up device portion formed of a CDD sensor having two-dimensionally disposed pixels of an image pick-up device.