EVALUATION OF THE PHYSICAL CHARACTERISTIC OF CERROBEND BLOCKS USED FOR RADIATION THERAPY

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TAHER KHANI A.; MOHAMMADI MOHAMMAD; SABOURI M.S.; CHANGIZI V.

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Journal Paper

Paper Information

Journal: International Journal of Radiation Research Year:2010 | Volume:8 | Issue:2 Page(s): 93-101

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Title

EVALUATION OF THE PHYSICAL CHARACTERISTIC OF CERROBEND BLOCKS USED FOR RADIATION THERAPY

Author(s)

TAHER KHANI A. | MOHAMMADI MOHAMMAD | SABOURI M.S. | CHANGIZI V. | Issue Writer Certificate

Keywords

BEAM COLLIMATION

BLOCK-CUTTER

CERROBEND BLOCKS

SHIELDING

Abstract

Background: In Radiation Therapy, the sparing of normal tissues can be performed using either multi-leaf collimators or CERROBEND BLOCKS. The current work focuses on the physical characteristics of CERROBEND BLOCKS including attenuation coefficient, effective penumbra width and isodose curves undulation in penumbral regions. Materials and Methods: All measurements were performed using a dual energy linac and the CERROBEND BLOCKS designed and fabricated using a commercial Cerrobend material. Data were collected using a calibrated ionization chamber as well as EDR2 films. Results: The results showed that the attenuation coefficient was found to be 0.4475 and 0.4276 cm-1 for photon beams 6MV and 15 MV, respectively, and a potential air bubble with a diameter greater than 3 mm affects beam attenuation significantly. The optimum Cerrobend block width was found to be around 16 mm. The isodose curves scalloping achieved for secondary collimator jaws, were also similar. Conclusion: If CERROBEND BLOCKS are used as a basic method to protect normal tissues, its physical characteristics will be recommended to be taken into account comprehensively.

Cites

THE COMPARISON OF STANDARD LEAD WITH INDIVIDUAL MOLD SHIELDING ON PATIENT DOSE

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APA: Copy

TAHER KHANI, A., MOHAMMADI, MOHAMMAD, SABOURI, M.S., & CHANGIZI, V.. (2010). EVALUATION OF THE PHYSICAL CHARACTERISTIC OF CERROBEND BLOCKS USED FOR RADIATION THERAPY. INTERNATIONAL JOURNAL OF RADIATION RESEARCH, 8(2), 93-101. SID. https://sid.ir/paper/286479/en

Vancouver: Copy

TAHER KHANI A., MOHAMMADI MOHAMMAD, SABOURI M.S., CHANGIZI V.. EVALUATION OF THE PHYSICAL CHARACTERISTIC OF CERROBEND BLOCKS USED FOR RADIATION THERAPY. INTERNATIONAL JOURNAL OF RADIATION RESEARCH[Internet]. 2010;8(2):93-101. Available from: https://sid.ir/paper/286479/en

IEEE: Copy

A. TAHER KHANI, MOHAMMAD MOHAMMADI, M.S. SABOURI, and V. CHANGIZI, “EVALUATION OF THE PHYSICAL CHARACTERISTIC OF CERROBEND BLOCKS USED FOR RADIATION THERAPY,” INTERNATIONAL JOURNAL OF RADIATION RESEARCH, vol. 8, no. 2, pp. 93–101, 2010, [Online]. Available: https://sid.ir/paper/286479/en

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