Analysis of the reliability of the local effect model for the use in carbon ion treatment planning systems.
In radiotherapy with carbon ions, biological effects of treatments have to be predicted. For this purpose, one of the most used models is the local effect model (LEM) developed at the Gesellschaft für Schwerionenforschung (GSI), Germany. At the Istituto Nazionale di Fisica Nucleare, Italy, the reliability of the last published version of LEM (LEM III) in reproducing radiobiological data has been checked under both monoenergetic and spread-out Bragg peak (SOBP) carbon-ion irradiation. The reproduction of the monoenergetic measurements with the LEM was rather successful for some cell lines, while it failed for the less-radioresistant ones. The SOBP experimental trend was predicted by the LEM, but a large shift between model curves and measured points was observed.
Istituto Nazionale di Fisica Nucleare sezione di Torino, Via Pietro Giuria 1, 10125 Torino, Italy. russo@to.infn.it
G
G
Russo
A
A
Attili
F
F
Bourhaleb
F
F
Marchetto
C
C
Peroni
E
E
Schmitt
D
D
Bertrand
D002247:Carbon Isotopes / Q000627:therapeutic use*; D045744:Cell Line, Tumor; D003198:Computer Simulation; D063193:Heavy Ion Radiotherapy; D006801:Humans; D008954:Models, Biological; D009369:Neoplasms / Q000503:physiopathology* / Q000532:radiotherapy*; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*; D020266:Radiotherapy, Conformal / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D016896:Treatment Outcome
D002247:Carbon Isotopes