Brachytherapy can be low dose rate low dose rate or high dose rate high dose rate permanent or temporary permanent or temporary

Types of Brachy Therapy

1. LDR(low dose rate) brachytherapy
2. HDR(high dose rate) brachytherapy

Review the isotopes in vogue, prescription ranges, and common clinical characteristics for LDR and HDRCompare and contrast LDR vs HDR Review radiation safety and release criteria

Prostate Brachytherapy HDR

HDR brachytherapy is a temporary type of prostate brachytherapy that involves placing radioactive sources in the prostate gland and delivering a high dose of radiation in a few minutes before the sources are removed. Typical treatment may involve several sessions.

Electronic Brachytherapy

1. Brachytherapy using an x-ray generator instead of a ray generator instead of a radioactive source radioactive source.
2. At the moment, all of the units operator between At the moment, all of the units operator between 30 and 50 kVp.30 and 50 kVp.

Available Units

Currently, there are two devices on the market:

The INTRABEAM, from Carl Zeiss, a stationary beam model used mostly for intraoperative beam model used mostly for intraoperative applications;applications;

The The AxxentAxxentsystem, from Xoft, a steppingsystem, from Xoft, a stepping--source source device, mostly to replace conventional HDR units.device, mostly to replace conventional HDR units

Comparisons with Sources for Breast Brachytherapy

Electronic Brachytherapy dose is higher near the source but lower far.but lower far.

The lower energy give some some sparing of skin and sparing of skin and pectoralis, but does not give quite as much dose beyond pectoralis the prescription.

Room shielding is not required.Room shielding is not required.

Inhomogeneities will produce a greater effect.Inhomogeneities will produce a greater effect.

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