Browse > Article

Transmission Dose Estimation Algorithm for Tissue Deficit  

Yun Hyong Geun (Department of Therapeutic Radiology, Dankook University College of Medicine)
Chie Eui Kyu (Department of Therapeutic Radiology, Seoul National University College of Medicine)
Huh Soon Nyung (Department of Therapeutic Radiology, Seoul National University College of Medicine, Torsion Meditronics)
Lee Hyoung Koo (Department of Biomedical Engineering, Catholic University College of Medicine)
Woo Hong Gyun (Department of Therapeutic Radiology, Dankook University College of Medicine, Institute of Radiation Medicine, Medical Research Center, Seoul National University)
Shin Kyo Chul (Department of Therapeutic Radiology, Dankook University College of Medicine)
Ha Sung Whan (Department of Therapeutic Radiology, Dankook University College of Medicine, Institute of Radiation Medicine, Medical Research Center, Seoul National University)
Publication Information
Radiation Oncology Journal / v.20, no.2, 2002 , pp. 186-192 More about this Journal
Abstract
Purpose : Measurement of transmission dose is useful for in vivo dosimetry. In this study, previous algorithm for estimation of transmission dose was modified for use in cases with tissue deficit. Materials and Methods : The beam data was measured with flat solid phantom in various conditions of tissue deficit. New algorithm for correction of transmission dose for tissue deficit was developed by physical reasoning. The algorithm was tested in experimental settings with irregular contours mimicking breast cancer patients using multiple sheets of solid phantoms. Results : The correction algorithm for tissue deficit could accurately reflect the effect of tissue deficit with errors within ${\pm}1.0\%$ in most situations and within ${\pm}3.0\%$ in experimental settings with irregular contours mimicking breast cancer treatment set-up. Conclusion : Developed algorithm could accurately reflect the effect of tissue deficit and irregularly shaped body contour on transmission dosimetry.
Keywords
In vivo dosimetry; Algorithm; Transmission dose; Tissue deficit; Irregular contour;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Wu HG, Ha SW. Development of algorithm for on-line dosimetry system for high energy radiation treatment. J Korean Asso Radiat Prot. 1997;22(3):207-218
2 Wu HG, Shin KC, Ha SW, Huh SN, Lee HK. Inhomogeneity correction in on-line dosimetry using transmission dose. J Korean Asso Radiat Prot 1998;23(3):139-147
3 Adeyemi A, Lord J. An audit of radiotherapy patient doses measured with in vivo semiconductor detectors. Br J Radiol. 1997;70:399-408   PUBMED
4 Yun HG. Transmission dose estimation algorithm for in vivo dosimetry in high energy X-ray external beam radiotherapy. A thesis for PhD. in medicine, SNU. Dec, 1999
5 Heukelom S, Lanson JH, Minjinheer BJ. In vivo dosimetry during pelvic treatment. Radiother Oncol 1992;25:111-120   DOI   ScienceOn
6 Essers M, Mijnheer BJ. In vivo dosimetry during external photon beam radiotherapy. Int J Radiat Oncol Biol Phys 1999;43(2):245-259   DOI   PUBMED   ScienceOn
7 Calandrino R, Cattaneo GM, Fiorino C, et al. Detection of systematic errors in external radiotherapy before treatment delivery. Radiother Oncol 1997;45:271-274   DOI   ScienceOn
8 Essers M, Lanson JH, Minjinheer BJ. In vivo dosimetry during conformal therapy of prostate cancer. Radiother Oncol 1993;29:271-279   DOI   ScienceOn
9 Yun HG, Huh SN,Llee HK, Wu HG, Shin KC, Ha SW. Transmission dose estimation algorithm for in vivo dosimetry for open radiation field. J Korean Asso Radiat Prot (submitted for publication)
10 Yun HG, Huh SN, Lee HK, Wu HG, Shin KC, Ha SW. Transmission dose estimation algorithm for irregularly shaped radiation field. J Korean Soc Ther Radiol Oncol (submitted for publication)
11 Millwater CJ, Macleod AS, Thwaites DI. In vivo semiconductor dosimetry as part of routine quality assurance. Br J Radiol 1998;71(846):661-668   PUBMED
12 Urie MM, Goiten M, Loppke K, et al. The role of uncertainty analysis in treatment plannning. Int J Radiat Oncol Biol Phys 1991;21:91-107   PUBMED