Poster - Thur Eve - 72: Conversion of helical tomotherapy plans into clinically favourable step-and-shoot IMRT plans deliverable on a c-arm linac. 2012

Rcn Studinski, and A Alexander, and D La Russa
The Ottawa Hospital Cancer Centre, Ottawa, ON, Canada.

The treatment planning software SharePlan is designed to convert dose distributions generated by the TomoTherapy planning station into step-and-shoot IMRT plans deliverable on a c-arm linear accelerator. Five anal canal patients who were planned for TomoTherapy treatments were exported into a SharePlan system and plans were generated for delivery on an Elekta Synergy unit. A total of 80 plans were generated for those five patients, with either seven, nine, eleven or twenty-one gantry angles and different priorities between focusing on matching either the target doses or healthy tissue sparing of the TomoTherapy plan. The plans generated by SharePlan, while often not matching target coverage at prescription, matched well the TomoTherapy coverage at 95% and 105% of the prescription dose. Organ at risk dose, when heavily emphazied in the SharePlan calculations matched or bettered the TomoTherapy dose due to the placement of the beams and the sharper sup-inf fall off of the dose distribution on a linac. For one of the patients, it was possible to produce a better DVH with SharePlan than the original TomoTherapy plan for those reasons. The TomoTherapy plans boasted significantly shorter delivery times than the plans generated with SharePlan.

UI MeSH Term Description Entries

Related Publications

Rcn Studinski, and A Alexander, and D La Russa
July 2012, Medical physics,
Rcn Studinski, and A Alexander, and D La Russa
August 2005, International journal of radiation oncology, biology, physics,
Rcn Studinski, and A Alexander, and D La Russa
July 2012, Medical physics,
Rcn Studinski, and A Alexander, and D La Russa
January 2016, Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB),
Rcn Studinski, and A Alexander, and D La Russa
January 2008, Medical dosimetry : official journal of the American Association of Medical Dosimetrists,
Rcn Studinski, and A Alexander, and D La Russa
January 2010, Medical dosimetry : official journal of the American Association of Medical Dosimetrists,
Rcn Studinski, and A Alexander, and D La Russa
January 2013, Physics in medicine and biology,
Copied contents to your clipboard!