• Histologically proven prostate adenocarcinoma

• PSA obtained within three months prior to enrolment

• ECOG performance status 0 to 2

• Ability to understand and the willingness to sign a written consent

• Suitable for high dose irradiation to the prostate

⁃ To be eligible for the arm containing Stereotactic Booster alone approach patient must have the following

• No contraindication to MRI such as pacemaker and severe claustrophobia

• Patient must be able to have fiducial markers placed in the prostate

• Patient must be able to have hydrogel insertion at the same time as fiducial markers

• Must have IPSS less than 15