• Title/Summary/Keyword: 두경부암 환자

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Influence of Aquaplastic Mask Immobilization on Patient Positioning in Head & Neck Radiotherapy (두경부암 방사선 치료 시 Aquaplastic Mask가 환자 고정에 미치는 영향)

  • Lee, Ho-Yeon;Bae, Sun-Myung;Kim, Jin-San;Kang, Tae-Young;Kwak, Jung-Won;Back, Geum-Mun
    • The Journal of Korean Society for Radiation Therapy
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    • v.24 no.2
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    • pp.175-181
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    • 2012

  • Purpose: This study aimed to analyze the influence of aquaplastic mask which is used for the radiotherapy for patients with head and neck cancer on patient positioning by analyzing the results of 2D/2D matching with the use of Exactrac 6D couch system. Materials and Methods: 2D/2D matching-based Image guidance was performed with the use of Exactrac 6D couch system on a total of 14 patients with head and neck cancer who received radiotherapy at this hospital in a period from June 2010 to June 2011. The adjusted 6D values obtained after the image guidance were classified into values related with patients and values not related with patients as to the correlation between the results. Results: In the analysis of the relation of each adjusted value to patients, the coefficient of determination ($R^2$) of longitudinal and pitch direction was 0.76, of longitudinal and yaw direction was 0.48, and of pitch and yaw direction was 0.42 although the coefficient of determination for above factors was 0.03 or less when the dependency of patients was excluded. Conclusion: It was demonstrated that intrinsic factors of aquaplastic mask had influence on the immobilization of patients by aquaplastic mask although various factors related with patients had influence on the immobilization of patients. It is believed that if these factors are adjusted, the treatment of patients with head and neck cancer can be more accurate.

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Unexpected Pulmonary Embolism Following Microvascular Head and Neck Reconstruction : Report of Two Cases and Review of the Literature (유리피판을 이용한 두경부 재건 후 발생한 폐색전증 2예 및 문헌고찰)

  • Choi, Eun Chang
    • Korean Journal of Head & Neck Oncology
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    • v.30 no.1
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    • pp.20-22
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    • 2014

  • 유리피판을 이용한 두경부 재건후 폐색전은 드물게 발생한다. 수술후 예상하기 힘들고 갑작스럽게 발생하기 때문에 환자가 아주 위험한 상황에 빠질 수 있다. 즉각적인 발견과 적절한 치료만이 환자의 생명을 구할 수 있다. 유리피판을 이용한 두경부 재건후 발생한 폐색전증 2예를 문헌고찰과 함께 보고하는 바이다.

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The Effect of Therapy Oriented CT in Radiation Therapy Planning (치료 계획용 전산화 단층촬영이 방사선 치료계획에 미치는 효과)

  • Kim, Sung-Kyu;Shin, Sei-One;Kim, Myung-Se
    • Radiation Oncology Journal
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    • v.5 no.2
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    • pp.149-155
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    • 1987

  • The success of radioation therapy depends on exact treatment of the tumor with significant high dose for maximizing local control and excluding the normal tissues for minimizing unwanted complications. To achieve these goals, correct estimation of target volume in three dimension, exact dose distribution in tumor and normal critical structures and correction of tissue inhomogeneity are required. The effect of therapy oriented CT (plannng CT) were compared with conventional simulation method in necessity of planning change, set dose, and proper distribution of tumor dose. Of 365 new patients examined, planning CT was performed in 104 patients $(28\%)$. Treatment planning was changed in $47\%$ of head and neck tumor, $79\%$ of intrathoracic tumor and $63\%$ of abdmonial tumor. in breast cancer and musculoskeletal tumors, planning CT was recommended for selection of adequate energy and calculation of exact dose to critical structures such as kidney or spinal cord. The average difference of tumor doses between CT planning and conventional simulation was $10\%$ in intrathoracic and intra-abdominal tumors but $20\%$ in head and neck tumors which suggested that tumor dose may be overestimated in conventional simulation Although some limitations and disadvantages including the cost and irradiation during CT are still criticizing, our study showed that CT Planning is very helpful in radiotherapy Planning.

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