• Title/Summary/Keyword: 두경부암

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Analysis of Pitch and Yaw Deviations Using an Aid-Pillow for the Head and Neck Cancer on the TomoTherapy (토모테라피를 이용한 두경부암 방사선치료에서 Aid-pillow 사용에 따른 Pitch와 Yaw의 변화 분석)

  • Jung, Jae Hong;Cho, Kwang Hwan;Kim, Yong Ho;Moon, Seong Kwon;Min, Chul Kee;Kim, Eun Seog;Lee, Kyung-Bae;Jung, Joo-Young;Suh, Tae-Suk;Choe, Bo-Young
    • Progress in Medical Physics
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    • v.24 no.1
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    • pp.54-60
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    • 2013

  • The aim of this study was to analysis of the pitch and yaw deviations with or without using an aid-pillow for the head and neck cancer on the TomoTherapy. A total of 14 head and neck patients were selected to without-group (n=7) and with-group (n=7). A total of 333 MVCT image sets used to evaluate the translational (lateral, longitudinal and vertical) and rotational adjustments (pitch, roll and yaw) with 153 and 180 MVCT image sets at without- and with-group, respectively. Deviations of without- and with-groups were $0.12^{\circ}$ and $0.09^{\circ}$, respectively at pitch. And, deviations without- and with-groups were $0.47^{\circ}$ and $0.17^{\circ}$, respectively at yaw. In generally, with-group had reduced than without-group for the pitch and yaw deviations. Therefore, using an aid-pillow, it will able to increase the reproducibility of treatment for the head and neck cancer patients on the TomoTherapy.

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Mediastinal Lymph Node Metastasis from Head and Neck Cancer: Predictive Factors and Imaging Features (두경부암의 종격동 림프절 전이: 예측인자 및 영상 소견)

  • Il Kwon Ko;Dae Young Yoon;Sora Baek;Ji Hyun Hong;Eun Joo Yun;In Jae Lee
    • Journal of the Korean Society of Radiology
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    • v.82 no.5
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    • pp.1246-1257
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    • 2021

  • Purpose To assess the predictive factors and describe the imaging features of mediastinal lymph node (MLN) metastases in patients with head and neck cancer. Materials and Methods We compared the clinical features and disease characteristics (sex, age, site of primary tumor, histologic type, history of prior treatments, TNM stages, and metastasis in cervical LNs) of patients with head and neck cancers between the MLN metastasis and no MLN metastasis groups. We also evaluated the chest CT (distribution and maximum dimension of the largest LN) and PET/CT (maximum standardized uptake value) features of MLN metastases based on the MLN classification. Results Of the 470 patients with head and neck cancer, 55 (11.7%) had MLN metastasis, involving 150 mediastinal stations. Hypopharynx cancer, recurrent tumor, T4 stage, N2/N3 stages, and M1 stage were found to be significant predicting factors for MLN metastasis. The most common location of MLN metastasis was ipsilateral station 2 (upper paratracheal LNs, 36.4%), followed by ipsilateral station 11 (interlobar LNs, 27.3%) and ipsilateral station 10 (hilar LNs, 25.5%). Conclusion Metastasis to MLNs should be considered in patients with head and neck cancer, especially in cases that are associated with a hypopharyngeal cancer, recurrent tumor, and high TNM stages.

  • https://doi.org/10.3348/jksr.2020.0203 인용 PDF