Dosimetric Effect of Target Position Accuracy on Single-Isocenter Multiple Liver Metastases SBRT
Yun Zhang,
Shanzhou Niu,
Jun Yuan
et al.
Abstract:Purpose: To evaluate the dosimetric effects of intrafraction baseline shifts combined with rotational errors on Four-dimensional computed tomography-guided stereotactic body radiotherapy for multiple liver metastases (MLMs). Methods: A total of 10 patients with MLM (2 or 3 lesions) were selected for this retrospective study. Baseline shift errors of 0.5, 1.0, and 2.0 mm; and rotational errors of 0.5°, 1°, and 1.5°, were simulated about all axes. All of the baseline shifts and rotation errors were simulated aro… Show more
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