Erectile dysfunction and radiation dose to penile base structures: a lack of correlation.

Purpose: To evaluate the relationship between the dose and volume of radiation to proximal penile structures and the development of erectile dysfunction after external beam radiotherapy (RT) for localized prostate adenocarcinoma.

Methods And Materials: The study cohort comprised 28 patients who were enrolled our in-house three-dimensional conformal RT dose escalation protocol. The patients were treated to 78 Gy between 1995 and 1998.

Treatment planning for lung cancer: traditional homogeneous point-dose prescription compared with heterogeneity-corrected dose-volume prescription.

Purpose: To quantify the differences in doses to target volumes and critical thoracic structures calculated by traditional homogeneous point-dose prescription and heterogeneity-corrected volume-dose prescription.

Methods And Materials: Between 1998 and 2001, 30 patients with inoperable Stage I/II non-small-cell lung cancer underwent radiation treatment planning at our institution. A commercially available convolution/superposition- based algorithm was used.