IGRT/ART phantom with programmable independent rib cage and tumor motion

Olivier C.L. Haas, J.A. Mills, I. Land, P. Mulholl, P. Menary, R. Crichton, A. Wilson, John Sage, M. Anna, T. Depuydt

    Research output: Contribution to journalArticle

    9 Citations (Scopus)
    52 Downloads (Pure)

    Abstract

    Purpose: This paper describes the design and experimental evaluation of the Methods and Advanced Equipment for Simulation and Treatment in Radiation Oncology (MAESTRO) thorax phantom, a new anthropomorphic moving ribcage combined with a 3D tumor positioning system to move target inserts within static lungs. Methods: The new rib cage design is described and its motion is evaluated using Vicon Nexus, a commercial 3D motion tracking system. CT studies at inhale and exhale position are used to study the effect of rib motion and tissue equivalence. Results: The 3D target positioning system and the rib cage have millimetre accuracy. Each axis of motion can reproduce given trajectories from files or individually programmed sinusoidal motion in terms of amplitude, period, and phase shift. The maximum rib motion ranges from 7 to 20 mm SI and from 0.3 to 3.7 mm AP with LR motion less than 1 mm. The repeatability between cycles is within 0.16 mm root mean square error. The agreement between CT electron and mass density for skin, ribcage, spine hard and inner bone as well as cartilage is within 3%. Conclusions: The MAESTRO phantom is a useful research tool that produces programmable 3D rib motions which can be synchronized with 3D internal target motion. The easily accessible static lungs enable the use of a wide range of inserts or can be filled with lung tissue equivalent and deformed using the target motion system.
    Original languageEnglish
    Article number022106
    JournalMedical Physics
    Volume41
    Issue number2
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    Neoplasms
    Ribs
    Radiation Oncology
    Lung
    Rib Cage
    Equipment and Supplies
    Articular Range of Motion
    Cartilage
    Spine
    Research Design
    Thorax
    Electrons
    Bone and Bones
    Skin
    Research

    Bibliographical note

    © 2014 American Association of Physicists in Medicine.

    Keywords

    • radiotherapy phantom
    • IGRT
    • ART
    • thorax
    • rib cage
    • Vicon
    • ribs
    • spine
    • skin
    • motion management

    Cite this

    Haas, O. C. L., Mills, J. A., Land, I., Mulholl, P., Menary, P., Crichton, R., ... Depuydt, T. (2014). IGRT/ART phantom with programmable independent rib cage and tumor motion. Medical Physics, 41(2), [022106]. https://doi.org/10.1118/1.4860662

    IGRT/ART phantom with programmable independent rib cage and tumor motion. / Haas, Olivier C.L.; Mills, J.A.; Land, I.; Mulholl, P.; Menary, P.; Crichton, R.; Wilson, A.; Sage, John; Anna, M.; Depuydt, T.

    In: Medical Physics, Vol. 41, No. 2, 022106, 2014.

    Research output: Contribution to journalArticle

    Haas, OCL, Mills, JA, Land, I, Mulholl, P, Menary, P, Crichton, R, Wilson, A, Sage, J, Anna, M & Depuydt, T 2014, 'IGRT/ART phantom with programmable independent rib cage and tumor motion' Medical Physics, vol. 41, no. 2, 022106. https://doi.org/10.1118/1.4860662
    Haas, Olivier C.L. ; Mills, J.A. ; Land, I. ; Mulholl, P. ; Menary, P. ; Crichton, R. ; Wilson, A. ; Sage, John ; Anna, M. ; Depuydt, T. / IGRT/ART phantom with programmable independent rib cage and tumor motion. In: Medical Physics. 2014 ; Vol. 41, No. 2.
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    abstract = "Purpose: This paper describes the design and experimental evaluation of the Methods and Advanced Equipment for Simulation and Treatment in Radiation Oncology (MAESTRO) thorax phantom, a new anthropomorphic moving ribcage combined with a 3D tumor positioning system to move target inserts within static lungs. Methods: The new rib cage design is described and its motion is evaluated using Vicon Nexus, a commercial 3D motion tracking system. CT studies at inhale and exhale position are used to study the effect of rib motion and tissue equivalence. Results: The 3D target positioning system and the rib cage have millimetre accuracy. Each axis of motion can reproduce given trajectories from files or individually programmed sinusoidal motion in terms of amplitude, period, and phase shift. The maximum rib motion ranges from 7 to 20 mm SI and from 0.3 to 3.7 mm AP with LR motion less than 1 mm. The repeatability between cycles is within 0.16 mm root mean square error. The agreement between CT electron and mass density for skin, ribcage, spine hard and inner bone as well as cartilage is within 3{\%}. Conclusions: The MAESTRO phantom is a useful research tool that produces programmable 3D rib motions which can be synchronized with 3D internal target motion. The easily accessible static lungs enable the use of a wide range of inserts or can be filled with lung tissue equivalent and deformed using the target motion system.",
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    AU - Haas, Olivier C.L.

    AU - Mills, J.A.

    AU - Land, I.

    AU - Mulholl, P.

    AU - Menary, P.

    AU - Crichton, R.

    AU - Wilson, A.

    AU - Sage, John

    AU - Anna, M.

    AU - Depuydt, T.

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    AB - Purpose: This paper describes the design and experimental evaluation of the Methods and Advanced Equipment for Simulation and Treatment in Radiation Oncology (MAESTRO) thorax phantom, a new anthropomorphic moving ribcage combined with a 3D tumor positioning system to move target inserts within static lungs. Methods: The new rib cage design is described and its motion is evaluated using Vicon Nexus, a commercial 3D motion tracking system. CT studies at inhale and exhale position are used to study the effect of rib motion and tissue equivalence. Results: The 3D target positioning system and the rib cage have millimetre accuracy. Each axis of motion can reproduce given trajectories from files or individually programmed sinusoidal motion in terms of amplitude, period, and phase shift. The maximum rib motion ranges from 7 to 20 mm SI and from 0.3 to 3.7 mm AP with LR motion less than 1 mm. The repeatability between cycles is within 0.16 mm root mean square error. The agreement between CT electron and mass density for skin, ribcage, spine hard and inner bone as well as cartilage is within 3%. Conclusions: The MAESTRO phantom is a useful research tool that produces programmable 3D rib motions which can be synchronized with 3D internal target motion. The easily accessible static lungs enable the use of a wide range of inserts or can be filled with lung tissue equivalent and deformed using the target motion system.

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