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In vivo dosimetry for head and neck carcinoma: determination of target absorbed dose from entrance and exit absorbed dose measurements

  • L. Farhat (a1), M. Besbes (a2), A. Bridier (a3) and J. Daoud (a1)

Abstract

The aims of this work were to measure the entrance and exit dose for patient treated for head and neck tumors. The target absorbed dose was determined from the exit and entrance dose measurement. Twenty patients were evaluated. The results were compared to the calculated values and the midline dose was determinate and compared with the prescribed dose. 80 entrance doses and 80 exit doses measurements were performed. The average difference from expected values was 1.93% for entrance dose (SD 1.92%) and –0.34% for exit dose (SD 4.1%). The target absorbed dose differed from prescribed dose values by 2.94% (1.97%) for the results using the Noël method and 3.34% (SD: 2.29%) with the Rizzotti method. The total uncertainty budget in the measurement of the absorbed entrance and exit dose with diode, including diode reading, correction factors and diode calibration coefficient, is determined as 3.02% (1 s). Simple in vivo dose measurements are an additional safeguard against major setup errors and calculation or transcription errors that were missed during pre-treatment chart check.

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[1] International Commission on Radiation units and Measurements, Report No. 24, 1976
[2] International Commission on Radiation units and Measurements, Report No. 62, 1999
[3] J. Van Dam, G. Marinello, ESTRO Booklet No. 1, 1994
[4] AAPM Report 87, Report of task group 62 of the radiation therapy committee, 2005
[5] D. Huyken et al., Booklet No. 5, 2001
[6] Rizzotti, A., Compri, C., Garusi, G.F., Radiother. Oncol. 3, 279 (1985)
[7] Leunens, G. et al., Radiother. Oncol. 19, 73 (1990)
[8] Heukelom, S., Lanson, J.H., Mijnheer, B.J., Radiother. Oncol. 25, 111 (1992)
[9] Noël, A. et al., Radiother. Oncol. 34, 144 (1995)
[10] International Atomic Energy Agency, Technical Report Series No. 398, 2000
[11] Farhat, L. et al., Cancer Radiother. 14, 69 (2010)
[12] Grussel, E., Rikner, G., Phys. Med. Biol. 31, 527 (1986)
[13] Van Dam, J., Leunens, G., Dutreix, A., Radiother. Oncol. 19, 345 (1990)
[14] Jursinic, P.A., Med. Phys. 28, 1718 (2001)
[15] Besbes, M. et al., Cancer Radiother. 14, 29 (2010)
[16] Kappas, K., Rosenwald, J.C., Radiother. Oncol. 21, 128 (1991)
[17] Roué, A. et al., Radiother. Oncol. 66, S40 (2003)
[18] Mitine, C. et al., Radiother. Oncol. 21, 201 (1991)
[19] Millwater, C.J., MaCleod, A.S., Thwaites, D.I., Br. J. Radiol. 71, 661 (1998)
[20] Fiorino, C. et al., Radiother. Oncol. 56, 85 (2000)
[21] Blyth, C., McLeod, A.S., Thwaites, D.I., Radiography 3, 131 (1997)
[22] Barker Jr, J.L.. et al., Int. J. Radiat. Oncol. Biol. Phys. 59, 960 (2004)
[23] Cho, B.C. et al., Med. Phys. 29, 2305 (2002)
[24] Senkus-Konefla, E. et al., Radiother. Oncol. 79, 304 (2006)
[25] Miszczyk, L., Wydmanski, J., Acta Oncol. 38, 197 (1999)

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In vivo dosimetry for head and neck carcinoma: determination of target absorbed dose from entrance and exit absorbed dose measurements

  • L. Farhat (a1), M. Besbes (a2), A. Bridier (a3) and J. Daoud (a1)

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