Image Guided Radiotherapy with Dual Source and Dual Detector Arrays Tetrahedron Beam Computed Tomography

摘要

A radiation treatment and imaging system for emitting a radiation treatment beam and X-ray imaging beams towards an object. The system includes an x-ray source and a collimator, first and second detectors, and a linear accelerator that delivers radiation beams to an object. The linear accelerator includes a radiation source positioned between the first and second detectors and emitting a therapy radiation beam in-line with the x-ray beams received by the first and second detectors. The system also includes a data processing device in communication with the first and second detectors. The data processing device receives imaging signals from the first and second detectors and reconstructs a three-dimensional tetrahedron beam computed tomography (TBCT) image from the received imaging signals. The system also includes a display in communication with the data processing device and for displaying the TBCT image.

主权项

1. A radiation treatment and imaging system for emitting a radiation treatment beam and X-ray imaging beams towards an object, the radiation treatment and imaging system comprising:
a first x-ray source array emits a first plurality of x-ray beams at different positions along a scanning direction; a first collimator positioned to intercept the first plurality of x-ray beams emitted by the first x-ray source so that a first plurality of fan-shaped x-ray beams emanate from the first collimator towards the object; a first detector positioned to receive a first portion of the first plurality of x-ray beams emitted by the first x-ray source and generating a first imaging signal based on the first portion of the first plurality of x-ray beams; a second detector positioned to receive a second portion of the first plurality of x-ray beams emitted by the first x-ray source and generating a second imaging signal based on the second portion of the first plurality of x-ray beams; a linear accelerator delivering a radiation beam from a megavolt radiation source to the object, the megavolt radiation source positioned between the first and second detectors and emits treatment radiation beams in a direction in-line with the first plurality of x-ray beams; a data processing device in communication with the first and second detectors, the data processing device receiving the first and second imaging signals, wherein the first x-ray source array, the first and second detectors, and the linear accelerator rotate about a rotation axis causing the data processing device to receive more than one first and second imaging signals, the data processing device reconstructing the received imaging signals generating a three-dimensional tetrahedron beam computed tomography image therefrom; and a display connected to the data processing device and displaying the three-dimensional tetrahedron beam compute tomography image.