Extremity imaging apparatus for cone beam computed tomography

US9277899B2 · kind B2 · utility

Inventors

• John Yorkston · Penfield, US
• Robert J. Asento · Rochester, US
• Jeffrey H. Siewerdsen · Baltimore, US
• David H. Foos · Rochester, US

Key dates

• Filing date: Mar 5, 2015
• Grant date: Mar 8, 2016
• Expiry date: Mar 5, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B6/505
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for cone beam computed tomography of an extremity has a digital radiation detector and a first device to move the detector along a circular detector path extending so that the detector moves both at least partially around a first extremity of the patient and between the first extremity and a second, adjacent extremity. The detector path has radius R1 sufficient to position the extremity approximately centered in the detector path. There is a radiation source with a second device to move the source along a concentric circular source path having a radius R2 greater than radius R1, radius R2 sufficiently long to allow adequate radiation exposure of the first extremity for an image capture by the detector. A first circumferential gap in the source path allows the second extremity to be positioned in the first circumferential gap during image capture.