1048 / 1778
A
A
2 cm
• Introduced in the 1930’s
(Tod & Meredith)
• Surrogate for mgh or TRAK (amount of radiation)
• p. A: ≈ Crossing of uterine artery and ureters
Tod & Meredith, 1938.
Meredith WJ, ed.. Radium dosage. The Manchester system. Edinburgh;1947.
Point A Dose
mg of
226
Ra
Source Geometry
Duration
Given tumour V
Certain p. A Dose
Manchester system = set of rules