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AAPM Task Group 263 Tackling Standardization of Nomenclature for Radiation Therapy

M Matuszak

M Matuszak1*, J Moran2 , Y Xiao3 , C Mayo4 , W Bosch5 , R Popple6 , L Marks7 , Q Wu8 , A Molineu9 , R Miller10 , T Yock11 , T McNutt12 , N Brown13 , T Purdie14 , E Yorke15 , L Santanam16 , P Gabriel17 , J Michalski18 , J Moore19 , S Richardson20 , R Siochi21 , M Napalitano22 , K Ulin23 , T Fitzgerald24 , M Feng25 , W Verbakel26 , S Siddiqui27 , T Morgas28 , M Martel29 , Y Archambault30 , M Ladra31 , B Lansing32 , R Ruo33 , A Fogliata-Cozzi34 , C Hurkmans35 , (1) University of Michigan, Ann Arbor, MI, (2) Univ Michigan Medical Center, Ann Arbor, MI, (3) Thomas Jefferson University, Philadelphia, PA, (4) Mayo Clinic, Rochester, MN, (5) Washington Univ, Saint Louis, MO, (6) Univ Alabama Birmingham, Birmingham, AL, (7) UNC School of Medicine, Chapel Hill, NC, (8) Duke University Medical Center, Durham, NC, (9) UT MD Anderson Cancer Center, Houston, TX, (10) Mayo Clinic, Rochester, MN, (11) Massachusetts General Hospital, Boston, MA, (12) Johns Hopkins University, Severna Park, MD, (13) Baptist Medical Center, Jacksonville, FL, (14) Princess Margaret Hospital, Toronto, ON, (15) Memorial Sloan-Kettering Cancer Center, New York, NY, (16) Washington University School of Medicine, St.louis, MO, (17) University of Pennsylvania, Philadelphia, PA, (18) Washington University, Saint Louis, MO, (19) Johns Hopkins University, Baltimore, MD, (20) Swedish Medical Center-Tumor Institute, Seattle, WA, (21) ,,,(22) Consultant, Swanee, Georgia, (23) UMass Medical Center, Lincoln, RI, (24) University of Massachusetts, Worcester, MA, (25) University of Michigan, Ann Arbor, MI, (26) VU University Medical Centre, Amsterdam, ,(27) Henry Ford Health System, Detroit, MI, (28) Varian Medical Systems, Palo Alto, CA, (29) UT MD Anderson Cancer Center, Houston, TX, (30) Varian Medical Systems, Palo Alto, CA, (31) ,,,(32) Elekta, Inc., Atlanta, GA, (33) Montreal General Hospital, Montreal, QC, (34) Ospedale San Giovanni, Porto Valtravaglia, ,(35) Catharina Hospital, Eindhoven,


SU-E-P-22 (Sunday, July 12, 2015) 3:00 PM - 6:00 PM Room: Exhibit Hall

Purpose: There is growing recognition of need for increased clarity and consistency in the nomenclatures used for body and organ structures, DVH metrics, toxicity, dose and volume units, etc. Standardization has multiple benefits; e.g. facilitating data collection for clinical trials, enabling the pooling of data between institutions, making transfers (i.e. hand-offs) between centers safer, and enabling vendors to define “default” settings. Towards this goal, the American Association of Physicists in Medicine (AAPM) formed a task group (TG263) in July of 2014, operating under the Work Group on Clinical Trials to develop consensus statements. Guiding principles derived from the investigation and example nomenclatures will be presented for public feedback.

We formed a multi-institutional and multi-vendor collaborative group of 39 physicists, physicians and others involved in clinical use and electronic transfer of information. Members include individuals from IROC, NRG, IHE-RO, DICOM WG-7, ASTRO and EORTC groups with overlapping interests to maximize the quality of the consensus and increase the likelihood of adoption. Surveys of group and NRG members were used to define current nomenclatures and requirements. Technical requirements of vendor systems and the proposed DICOM standards were examined.

Results: There is a marked degree of inter and intra institutional variation in current approaches, resulting from inter-vendor differences in capabilities, clinic specific conceptualizations and inconsistencies. Using a consensus approach, the group defined optimal formats for the naming of targets and normal structures. A formal objective assessment of 13 existing clinically-used software packages show that all had capabilities to accommodate these recommended nomenclatures.

Conclusions: A multi-stakeholder effort is making significant steps forward in developing a standard nomenclature that will work across platforms. Our current working list includes > 550 structures. Outreach efforts are ongoing to ensure broader participation in evaluating and testing the principles as they are developed by TG263.

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