Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology
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Comparative Study Clinical Trial Controlled Clinical Trial
Internal organ motion in prostate cancer patients treated in prone and supine treatment position.
To compare supine and prone treatment positions for prostate cancer patients with respect to internal prostate motion and the required treatment planning margins. ⋯ For internal prostate movement, it is important to distinguish systematic from random variations. Compared to patients in supine position, patients in prone position had smaller random but somewhat larger systematic variations in the most important coordinates of the internal CTV position. The estimated planning margins to account for the geometrical uncertainties were therefore similar for the two treatment positions.
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Comparative Study
Conformal radiation therapy treatment planning reduces the dose to the optic structures for patients with tumors of the paranasal sinuses.
Compare dose distributions of traditional versus conformal beam orientations in paranasal sinus malignancies. ⋯ Conformal planning reduced the V80 to the optic nerves and chiasm as well as the normal tissue maximum doses to the ipsilateral and contralateral optic nerves and chiasm, and mean NTCPs.