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Evaluation of the reduced scalp dose at Volumetric Modulated Arc Therapy(VMAT)

전뇌조사의 체적변조회전치료 시 두피선량 감소에 관한 평가

  • Received : 2014.07.15
  • Accepted : 2014.10.10
  • Published : 2014.10.31

Abstract

The use of WBRT(whole brain radiation therapy) has increased due to the increase in the incidence of metastatic brain tumors. The development of radiation therapy techniques is expected to improve the quality of life. The VMAT (Volumetric Modulated Arc Therapy) is an excellent treatment technique that can distinguish the dose in each volume. Therefore, this study compared conventional WBRT and VMAT for hair loss according to the scalp dose using a head phantom. The CI (Conformity Index), HI (Homogeneity Index) and QOC (Quality of Coverage) were measured brain tissue. A 20 percent and 50 percent dose was measured at the scalp, eyeball, lens, and c-spine. Conventional WBRT is excellent at 10 percent of brain tissue. VMAT is far superior at 1000 percent at the other organs. VMAT at the prescribed dose can be used as radiation therapy of metastatic brain tumors with less hair loss.

Keywords

Alopecia;Brain Cancer;Volumetric Modulated Arc Therapy;Whole Brain Radiation Therapy

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