Combining marker-less patient setup and respiratory motion monitoring using low cost 3D camera technology

F. Tahavori; E. Adams; M. Dabbs; L. Aldridge; N. Liversidge; E. Donovan; T. Jordan; PM. Evans; K. Wells

doi:10.1117/12.2082726

18 March 2015 Combining marker-less patient setup and respiratory motion monitoring using low cost 3D camera technology

F. Tahavori, E. Adams, M. Dabbs, L. Aldridge, N. Liversidge, E. Donovan, T. Jordan, PM. Evans, K. Wells

Proceedings Volume 9415, Medical Imaging 2015: Image-Guided Procedures, Robotic Interventions, and Modeling; 94152I (2015) https://doi.org/10.1117/12.2082726
Event: SPIE Medical Imaging, 2015, Orlando, Florida, United States

Abstract

Patient set-up misalignment/motion can be a significant source of error within external beam radiotherapy, leading to unwanted dose to healthy tissues and sub-optimal dose to the target tissue. Such inadvertent displacement or motion of the target volume may be caused by treatment set-up error, respiratory motion or an involuntary movement potentially decreasing therapeutic benefit. The conventional approach to managing abdominal-thoracic patient set-up is via skin markers (tattoos) and laser-based alignment. Alignment of the internal target volume with its position in the treatment plan can be achieved using Deep Inspiration Breath Hold (DIBH) in conjunction with marker-based respiratory motion monitoring.

We propose a marker-less single system solution for patient set-up and respiratory motion management based on low cost 3D depth camera technology (such as the Microsoft Kinect). In this new work we assess this approach in a study group of six volunteer subjects. Separate simulated treatment mimic treatment "fractions" or set-ups are compared for each subject, undertaken using conventional laser-based alignment and with intrinsic depth images produced by Kinect. Microsoft Kinect is also compared with the well-known RPM system for respiratory motion management in terms of monitoring free-breathing and DIBH. Preliminary results suggest that Kinect is able to produce mm-level surface alignment and a comparable DIBH respiratory motion management when compared to the popular RPM system. Such an approach may also yield significant benefits in terms of patient throughput as marker alignment and respiratory motion can be automated in a single system.

Citation Download Citation

F. Tahavori, E. Adams, M. Dabbs, L. Aldridge, N. Liversidge, E. Donovan, T. Jordan, PM. Evans, and K. Wells "Combining marker-less patient setup and respiratory motion monitoring using low cost 3D camera technology", Proc. SPIE 9415, Medical Imaging 2015: Image-Guided Procedures, Robotic Interventions, and Modeling, 94152I (18 March 2015); https://doi.org/10.1117/12.2082726

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available