William Beaumont Hospital

Dilliam Beaumont Hospital

David A Jaffray

John W Wong

Jeffrey H Siewerdesen

John R Musselwhite

Michael B Sharpe

A radiation therapy system that includes a radiation source that moves about a path and directs a beam of radiation towards an object and a cone-beam computer tomography system. The cone-beam computer tomography system includes an x-ray source that emits an x-ray beam in a cone-beam form towards an object to be imaged and an amorphous silicon flat-panel imager receiving x-rays after they pass through the object, the imager providing an image of the object. A computer is connected to the radiation source and the cone beam computerized tomography system, wherein the computer receives the image of the object and based on the image sends a signal to the radiation source that controls the path of the radiation source.

Cone beam computed tomography with a flat panel imager

Cone-beam computed tomography with a flat-panel imager

Methods and apparatus for delivering radiation therapy to patients during suspended ventilation are provided. The apparatus includes a ventilator assembly having first and second selectively operable valves that independently control inhalation and exhalation of the patient. Both valves are shut to suspend patient ventilation for a period of time. In the methods of the present invention, radiation therapy is administered during this period of suspended patient ventilation.

Method and apparatus for delivering radiation therapy during suspended ventilation

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Windsor, CA, United States of America

David A Jaffray