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Example for HDR
192
Ir BT source for breast balloon applicator
Category
Optimum level
Assumptions
Source strength
2% PSDL traceable calibrations.
Treatment planning
3% Reference data with the appropriate bin width.
Medium dosimetric corrections
3% Balloon filled with standard level of contrast
agent, no consideration or composition of
chestwall, lung, or breast.
Scatter dosimetric corrections
7% A non-scalar correction for skin dose is
needed, and will require an advanced dose
calculation formalism to properly account for
radiation scatter conditions in the patient.
Dose delivery including registration
of applicator geometry to anatomy 7% Accurate QA concept for commissioning and
constancy checks, especially for source
positioning and applicator/ source path
geometry, appropriate imaging techniques
(either small slice thickness, 3D sequences or
combination of different slice orientations),
applicator characterization.