![]() ![]() ![]() They were also significant in multivariate analysis ( P < 0.001). ResultsĪmong the parameters, vital capacity (VC) and BMI showed the strongest negative correlation with MHD (r = − 0.33) and MLD (r = − 0.34), respectively. The residuals were calculated to explore the unpreferable subgroups and compare the prediction accuracy. We completed the correlative and multivariate analysis to develop the linear regression models for dose prediction. ![]() One hundred eligible patients were performed free-breathing (FB-) CT and DIBH-CT for plan comparison. Patients who were not available for preoperative spirometry were excluded. Left-sided breast cancer patients underwent breast-conserving surgery followed by DIBH radiotherapy enrolled. This study aimed to investigate preoperative spirometry and BMI as early predictors of the mean heart and lung dose (MHD, MLD) in deep inspiration breath-hold (DIBH) radiotherapy. ![]()
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