Low-dose-rate brachytherapy as salvage treatment of local prostate cancer recurrence after radical prostatectomy.

Objectives: To present our initial experience with brachytherapy used as a salvage procedure for local recurrence of prostate cancer in the prostatic fossa after radical prostatectomy.

Methods: The patients included 5 consecutive men who underwent brachytherapy as a salvage procedure after radical prostatectomy from December 2006 to March 2008. We used a technique of implanting the local recurrences similar to the American Brachytherapy Society Guidelines for implanting an intact prostate as definitive therapy.

Origin of magnetic circular dichroism in GaMnAs: giant zeeman splitting versus spin dependent density of states.

We present a unified interpretation of experimentally observed magnetic circular dichroism (MCD) in the ferromagnetic semiconductor (Ga,Mn)As, based on theoretical arguments, which demonstrates that MCD in this material arises primarily from a difference in the density of spin-up and spin-down states in the valence band brought about by the presence of the Mn impurity band, rather than being primarily due to the Zeeman splitting of electronic states.