What question did this study set out to answer?

The aim is to quantify the dosimetric differences in radiotherapy for intramuscular metastases when using MR guidance compared to CT guidance.

April 22, 2026Journal of Applied Clinical Medical Physics0 citationsOpen Access

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Quantifying setup uncertainty between computed tomography guidance and magnetic resonance guidance in intramuscular metastases radiotherapy

TSTravis SalzilloThe University of Texas MD Anderson Cancer Center SPSurendra Prajapati ZYZhiqian YuThe University of Texas MD Anderson Cancer Center

Key Points

The aim is to quantify the dosimetric differences in radiotherapy for intramuscular metastases when using MR guidance compared to CT guidance.
Compared dosimetric outcomes between MRgRT and CTgRT in treating intramuscular metastases.
Measured treatment margins for both modalities.
MRgRT allows for a reduction of treatment margin by at least 5 mm in each direction.
Dosimetric advantages of MRgRT are highlighted compared to CTgRT.

Abstract

We quantified the dosimetric difference in treating intramuscular metastases using MRgRT versus CTgRT and showed that treatment margin can be reduced by at least 5 mm in each direction with MRgRT.

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Quantifying setup uncertainty between computed tomography guidance and magnetic resonance guidance in intramuscular metastases radiotherapy

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Abstract

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