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Registration of the Patient Body Position with CT Volume Using Structured Light Technique

IP.com Disclosure Number: IPCOM000168063D
Published in the IP.com Journal: Volume 8 Issue 3A (2008-03-11)
Included in the Prior Art Database: 2008-Mar-11
Document File: 2 page(s) / 170K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

Registration of the patient body position with volume data, such as CT (Computed Tomography) or MRI (Magnetic Resonance Imaging), acquired at some earlier time, presents a significant challenge. But easy and reliable registration can provide many advantages. It allows superimposing volume data from different modalities or superimposing real-time 2D x-ray images with 3D volume data and localizing tissue structures and devices and visualizing them in the 3D context. The typical, presently used, approaches to the multi-modality image registration are either sophisticated image processing solutions (like mutual information method) or solutions seeking restriction of patient movement between subsequent acquisitions. Symbia of the Siemens AG is a good example of a hybrid (CT/SPECT (Single Photon Emission Computed Tomography)) device where patient does not move between, in this case, CT and SPECT acquisitions.

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Registration of the Patient Body Position with CT Volume Using Structured Light Technique

Idea: Adam Galant, US-Carpentersville, Illinois; Dr. Klaus Klingenbeck-Regn, DE-Forchheim

Registration of the patient body position with volume data, such as CT (Computed Tomography) or MRI (Magnetic Resonance Imaging), acquired at some earlier time, presents a significant challenge. But easy and reliable registration can provide many advantages. It allows superimposing volume data from different modalities or superimposing real-time 2D x-ray images with 3D volume data and localizing tissue structures and devices and visualizing them in the 3D context.

The typical, presently used, approaches to the multi-modality image registration are either sophisticated image processing solutions (like mutual information method) or solutions seeking restriction of patient movement between subsequent acquisitions. Symbia of the Siemens AG is a good example of a hybrid (CT/SPECT (Single Photon Emission Computed Tomography)) device where patient does not move between, in this case, CT and SPECT acquisitions.

This novel idea proposes to introduce the third modality used as a proxy to aid the registration of the results of the two others. In particular the "structured light" method of 3D shape acquisition is proposed as the proxy. The structured light method can be used to obtain an accurate 3D model of the outer surface of the pat...