1. Supplement for Ion Therapy WG7 Ion Subcommittee Scot Hogan, Chair

2. Two New IODs Created RT Ion Plan contains pretreatment definition RT Ion Treatment Record contains post treatment records New IODs created because: –Existing RT Plan has type 1 and 2 attributes that are not applicable to Ion Therapy –New type 1 and 2 attributes are introduced for Ion Therapy –Maintenance will be handled by separate groups

3. Beam Line Modifiers All Ion Therapy beam line modifiers have been categorized into: –Range Shifting Devices –Lateral Spreading Devices –Range Modulation Devices Snout –Some machines have interchangeable Snouts

4. Traditional Accessories Range Compensators BolusApertures

5. Other Differences No Source-to-Axis distance –All measurements taken from isocenter –X/Y dependant Virtual SAD added for device manufacturing 6 Degrees of freedom couch –Pitch and Roll angles defined All imaging performed by x-ray sources Passive and Scanning beams

6. Supplement Status Has undergone final review by WG7 Ion Subcommittee and is out for vote. Subcommittee has T-CON at least once a month. Two meetings held in conjunction with PT- COG. Several implementations are undergoing testing – they go live January 2006.