Browse Prior Art Database

KV Cone Beam For Image Guidance in External Beam RT

IP.com Disclosure Number: IPCOM000031304D
Publication Date: 2004-Sep-21
Document File: 4 page(s) / 195K

Publishing Venue

The IP.com Prior Art Database

Related People

Jochen Klaus Kusch: INVENTOR

Abstract

Image guidance using a mobile cone beam C arm for Image guidance in external beam radiation therapy.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 79% of the total text.

Page 1 of 4

Our Docket No.: 2004J13913

Title: KV Cone Beam For Image Guidance in External Beam RT Inventor(s): Jochen Klaus Kusch

Page 2 of 4

Page 1 of 3

kV Cone Beam for Image Guidance in External Beam RT

Image guidance using a mobile cone beam C arm for Image guidance in external beam radiation therapy.

In external beam radiation therapy you want to make sure that the actual patient position or more precise the actual target is where you expect it to be so that you really treat according to your plan.

One elegant and cost effective solution will be the usage of a mobile C arm with cone beam capability in connection with a navigation system (Figure1).

After having the patient roughly positioned on the treatment table a Cone Beam scan is taken in any treatment table position.

A Navigation system, as it is used in orthopedic and trauma surgery or other applications, will automatically create a virtual link between the cone beam dataset of the actual patient position, the Linac isocenter, and the treatment table. No mechanical link between the imaging device and the linac is needed. (The linac will replace the tool and the treatment table will replace the patient of the surgery setup in Figure 2)

The aquired dataset of the actual patient/ target position can be fused with the plan (Figure 3) and the offset can be determined. Based on this calculation the patient/ target can easily be positioned correctly by moving the treatment table accordingly. This way set up errors are eli...