https://www.selleckchem.com/
This study aimed to study the impact of continuous positive airway pressure (CPAP) on chest anatomy and tumor motion in patients receiving radiation therapy. Patients with primary or secondary lung tumors, left-sided breast cancer, or liver metastases referred for radiation therapy were trained to breathe with a CPAP device using a face mask to a maximal pressure of 15 cm H O. Three- and 4-dimensional computed tomography simulation was performed twice for each patient once with free breathing (F and again using CPAP. Volumetric and dosimetric parameters o
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