International journal of radiation oncology, biology, physics
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Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006
Randomized Controlled TrialA randomized, double-blind, placebo-controlled, cross-over study to assess the efficacy of tadalafil (Cialis) in the treatment of erectile dysfunction following three-dimensional conformal external-beam radiotherapy for prostatic carcinoma.
Erectile dysfunction after three-dimensional conformal external-beam radiotherapy (3DCRT) for prostatic carcinoma is reported in as many as 64% of those patients. The purpose of this study was to determine the efficacy of the oral drug tadalafil (Cialis) in patients with erectile dysfunction after radiotherapy for prostatic carcinoma. ⋯ Tadalafil is an effective treatment for erectile dysfunction after 3DCRT for prostatic carcinoma with successful intercourse reported in almost 50% of the patients, and it is well tolerated.
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Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006
Comparative StudyFive-year prospective patient evaluation of bladder and bowel symptoms after dose-escalated radiotherapy for prostate cancer with the BeamCath technique.
Late side effects were prospectively evaluated up to 5 years after dose-escalated external beam radiotherapy (EBRT) and were compared with a previously treated series with conventional conformal technique. ⋯ Dose-escalated EBRT with the BeamCath technique with doses up to 78 Gy is tolerable, and the toxicity profile is similar to that observed with conventional doses<71 Gy.
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Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006
High-dose irradiation for prostate cancer via a high-dose-rate brachytherapy boost: results of a phase I to II study.
To evaluate outcomes of intermediate- and high-risk prostate cancer patients on a prospective dose-escalation study of pelvic external-beam radiation therapy (EBRT) combined with high-dose-rate (HDR) brachytherapy boost. ⋯ There is a strong dose-response relationship for intermediate- to high-risk prostate cancer patients. Improved locoregional control with higher radiation doses alone can significantly decrease biochemical and clinical failures.
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Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006
Assessment of residual error in liver position using kV cone-beam computed tomography for liver cancer high-precision radiation therapy.
To evaluate the residual error in liver position using breath-hold kilovoltage (kV) cone-beam computed tomography (CT) following on-line orthogonal megavoltage (MV) image-guided breath-hold liver cancer conformal radiotherapy. ⋯ Liver position after radiation therapy guided with MV orthogonal imaging was within 5 mm of planned position in the majority of patients. kV cone-beam CT image guidance should improve accuracy with reduced dose compared with orthogonal MV image guidance for liver cancer radiation therapy.
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Int. J. Radiat. Oncol. Biol. Phys. · Oct 2006
Perineural invasion associated with increased cancer-specific mortality after external beam radiation therapy for men with low- and intermediate-risk prostate cancer.
To identify an association between perineural invasion (PNI) and cancer-specific survival in patients with prostate cancer after standard-dose external beam radiation therapy (RT). ⋯ Patients with low- or intermediate-risk prostate cancer who have PNI on prostate needle biopsy have a significantly higher rate of prostate cancer-specific mortality after standard-dose radiation therapy than patients without PNI. Although this analysis is retrospective, this association argues for consideration of the use of more aggressive therapy, such as hormonal therapy with RT or dose escalation, in these select patients.