A look-up-table development to facilitate CT simulation of MR-Linac treatment

Neil Hughes; Travis C. Salzillo; Sastry Vedam; Tze Yee Lim; Xin Wang; He Wang; Mustefa Mohammedsaid; Clifton D. Fuller; Jihong Wang; Jinzhong Yang

doi:10.1016/j.phro.2023.100524

A look-up-table development to facilitate CT simulation of MR-Linac treatment

Neil Hughes, Travis C. Salzillo, Sastry Vedam, Tze Yee Lim, Xin Wang, He Wang, Mustefa Mohammedsaid, Clifton D. Fuller, Jihong Wang, Jinzhong Yang

Research output: Contribution to journal › Article › peer-review

Abstract

While current MR-Linac (MRL) treatment workflows utilize a large table overlay during CT simulation to convert indexing between the two machines, we developed a look-up-table (LUT) as an alternative approach. After populating the LUT, index conversion factors were verified at three separate table locations. The resultant root-mean-square isocenter shifts on the MRL were 0.04/0.08 cm, 0.08/0.07 cm, and 0.09/0.08 cm with/without using the table overlay during simulation in the lateral, longitudinal, and vertical directions, respectively, which is within registration tolerance. Clinical implementation of the LUT has resulted in a more efficient MRL treatment workflow while maintaining accurate patient setup.

Original language	English (US)
Article number	100524
Journal	Physics and Imaging in Radiation Oncology
Volume	29
DOIs	https://doi.org/10.1016/j.phro.2023.100524
State	Published - Jan 2024

ASJC Scopus subject areas

Radiation
Oncology
Radiology Nuclear Medicine and imaging

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10.1016/j.phro.2023.100524

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title = "A look-up-table development to facilitate CT simulation of MR-Linac treatment",

abstract = "While current MR-Linac (MRL) treatment workflows utilize a large table overlay during CT simulation to convert indexing between the two machines, we developed a look-up-table (LUT) as an alternative approach. After populating the LUT, index conversion factors were verified at three separate table locations. The resultant root-mean-square isocenter shifts on the MRL were 0.04/0.08 cm, 0.08/0.07 cm, and 0.09/0.08 cm with/without using the table overlay during simulation in the lateral, longitudinal, and vertical directions, respectively, which is within registration tolerance. Clinical implementation of the LUT has resulted in a more efficient MRL treatment workflow while maintaining accurate patient setup.",

author = "Neil Hughes and Salzillo, {Travis C.} and Sastry Vedam and Lim, {Tze Yee} and Xin Wang and He Wang and Mustefa Mohammedsaid and Fuller, {Clifton D.} and Jihong Wang and Jinzhong Yang",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2024",

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doi = "10.1016/j.phro.2023.100524",

language = "English (US)",

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T1 - A look-up-table development to facilitate CT simulation of MR-Linac treatment

AU - Hughes, Neil

AU - Salzillo, Travis C.

AU - Vedam, Sastry

AU - Lim, Tze Yee

AU - Wang, Xin

AU - Wang, He

AU - Mohammedsaid, Mustefa

AU - Fuller, Clifton D.

AU - Wang, Jihong

AU - Yang, Jinzhong

PY - 2024/1

Y1 - 2024/1

N2 - While current MR-Linac (MRL) treatment workflows utilize a large table overlay during CT simulation to convert indexing between the two machines, we developed a look-up-table (LUT) as an alternative approach. After populating the LUT, index conversion factors were verified at three separate table locations. The resultant root-mean-square isocenter shifts on the MRL were 0.04/0.08 cm, 0.08/0.07 cm, and 0.09/0.08 cm with/without using the table overlay during simulation in the lateral, longitudinal, and vertical directions, respectively, which is within registration tolerance. Clinical implementation of the LUT has resulted in a more efficient MRL treatment workflow while maintaining accurate patient setup.

AB - While current MR-Linac (MRL) treatment workflows utilize a large table overlay during CT simulation to convert indexing between the two machines, we developed a look-up-table (LUT) as an alternative approach. After populating the LUT, index conversion factors were verified at three separate table locations. The resultant root-mean-square isocenter shifts on the MRL were 0.04/0.08 cm, 0.08/0.07 cm, and 0.09/0.08 cm with/without using the table overlay during simulation in the lateral, longitudinal, and vertical directions, respectively, which is within registration tolerance. Clinical implementation of the LUT has resulted in a more efficient MRL treatment workflow while maintaining accurate patient setup.

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ER -

A look-up-table development to facilitate CT simulation of MR-Linac treatment

Abstract

ASJC Scopus subject areas

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