open access

Vol 14, No 4 (2009)
Untitled
Published online: 2009-07-01
Submitted: 2009-06-01
Get Citation

Comparison of image registration performed with MV cone beam CT and CT on rails and Syngo™ Adaptive Targeting software

Sylwia ZIELIŃSKA-DĄBROWSKA, Paweł F. KUKOŁOWICZ, Piotr CZEBEK-SZEBEK
DOI: 10.1016/S1507-1367(10)60027-2
·
Rep Pract Oncol Radiother 2009;14(4):122-132.

open access

Vol 14, No 4 (2009)
Untitled
Published online: 2009-07-01
Submitted: 2009-06-01

Abstract

Background

Minimization of geometric errors in treatment delivery is essential in modern conformal and intensity-modulated techniques.

Aim

In this paper two Siemens systems, MVision megavoltage cone beam CT, and CTVision (CT on rails), are compared.

Material and Methods

The reproducibility and uncertainty of the image registration procedure performed with Adaptive Targeting (AT) software were evaluated. Both systems were evaluated by means of simulating the clinical situation with an anthropomorphic phantom in three anatomical sites: head & neck, thorax and pelvis.

Results

The results for two methods of image registration, manual and automatic, were evaluated separately. The manual procedure was used by two users, more and less experienced.

Conclusions

The MVision system and CTVision and the Therapist Adaptive software ensure image registration with the uncertainty of about 2.0 mm (2 standard deviations). In the case of the automatic registration method better reproducibility of image registration was obtained for MVision. For CTVision the necessity of manual identification of the machine isocentre made the registration less reproducible. In the case of MVision, the automatic method was more reproducible than the manual one (smaller dispersion of results). In the case of CTVision, similar results were obtained for both registration methods. In the case of manual registration slightly better reproducibility for CT data acquired at 2 mm slice thickness and 2 mm slice separation than for data acquired at 5 mm slice thickness and 5 mm slice separation were obtained. Similar results of manual registration performed by more and less experienced users were obtained.

Abstract

Background

Minimization of geometric errors in treatment delivery is essential in modern conformal and intensity-modulated techniques.

Aim

In this paper two Siemens systems, MVision megavoltage cone beam CT, and CTVision (CT on rails), are compared.

Material and Methods

The reproducibility and uncertainty of the image registration procedure performed with Adaptive Targeting (AT) software were evaluated. Both systems were evaluated by means of simulating the clinical situation with an anthropomorphic phantom in three anatomical sites: head & neck, thorax and pelvis.

Results

The results for two methods of image registration, manual and automatic, were evaluated separately. The manual procedure was used by two users, more and less experienced.

Conclusions

The MVision system and CTVision and the Therapist Adaptive software ensure image registration with the uncertainty of about 2.0 mm (2 standard deviations). In the case of the automatic registration method better reproducibility of image registration was obtained for MVision. For CTVision the necessity of manual identification of the machine isocentre made the registration less reproducible. In the case of MVision, the automatic method was more reproducible than the manual one (smaller dispersion of results). In the case of CTVision, similar results were obtained for both registration methods. In the case of manual registration slightly better reproducibility for CT data acquired at 2 mm slice thickness and 2 mm slice separation than for data acquired at 5 mm slice thickness and 5 mm slice separation were obtained. Similar results of manual registration performed by more and less experienced users were obtained.

Get Citation

Keywords

cone-beam CT; CT on rails; accuracy of image registration

About this article
Title

Comparison of image registration performed with MV cone beam CT and CT on rails and Syngo™ Adaptive Targeting software

Journal

Reports of Practical Oncology and Radiotherapy

Issue

Vol 14, No 4 (2009)

Pages

122-132

Published online

2009-07-01

DOI

10.1016/S1507-1367(10)60027-2

Bibliographic record

Rep Pract Oncol Radiother 2009;14(4):122-132.

Keywords

cone-beam CT
CT on rails
accuracy of image registration

Authors

Sylwia ZIELIŃSKA-DĄBROWSKA
Paweł F. KUKOŁOWICZ
Piotr CZEBEK-SZEBEK

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By "Via Medica sp. z o.o." sp.k., ul. Świętokrzyska 73, 80–180 Gdańsk, Poland
tel.:+48 58 320 94 94, fax:+48 58 320 94 60, e-mail: journals@viamedica.pl