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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국의학물리학회 의학물리 의학물리 제32권 제3호
- 발행연도
- 2021.9
- 수록면
- 70 - 81 (12page)
- DOI
- 10.14316/pmp.2021.32.3.70
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초록· 키워드
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Purpose: This study was designed to investigate the dosimetric difference between intensity- modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) in head and neck cancer (HNC). The study primarily focuses on low-dose spillage evaluation between these two techniques.
Methods: This retrospective study involved 45 patients with HNC. The treatment plans were generated using the IMRT and VMAT techniques for all patients. Dosimetric comparisons were performed in terms of target coverage, organ-at-risk (OAR) sparing, and various parameters, including conformity index, uniformity index, homogeneity index, conformation number, low-dose volumes, and normal tissue integral dose (NTID).
Results: No significant ( >0.05) difference in planning target volume coverage (D95%) was observed between IMRT and VMAT plans for supraglottic larynx, hard palate, and tongue cancers. A decrease in dose volumes ranging from 1 Gy to 30 Gy was observed for VMAT plans compared with those for IMRT plans, except for V1Gy and V30Gy for supraglottic larynx cancer and V1Gy for tongue cancer. Moreover, decreases ( <0.05) in NTID were observed for VMAT plans compared with that for IMRT plans in supraglottic larynx (4.50%), hard palate (12.80%), and tongue (7.76%) cancers. In contrast, a slight increase in monitor units for VMAT compared with those for IMRT in supraglottic larynx (0.46%), hard palate (2.54%), and tongue (7.56%) cancers.
Conclusions: For advanced-stage HNC, both IMRT and VMAT offer satisfactory clinical plans. VMAT offers a conformal and homogeneous dose distribution with comparable OAR sparing and higher dose falloff outside the target volume than IMRT, which provides an edge to reduce the risk of secondary malignancies for HNC over IMRT.
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참고문헌 (31)
참고문헌 신청
Bhattacharjee A / 2006 / Prevalence of head and neck cancers in the North East-an institutional study / Indian J Otolaryngol Head Neck Surg 58:15~19
Sharma JD / 2019 / Head and neck squamous cell carcinoma in young adults: a hospital-based study / Indian J Med Paediatr Oncol 40(S1):S18~S22
Grégoire V / 2010 / Squamous cell carcinoma of the head and neck: EHNS-ESMO-ESTRO Clinical Practice Guidelines for diagnosis, treatment and follow-up / Ann Oncol 21(Suppl 5):v184~v186
Vigneswaran N / 2014 / Epidemiologic trends in head and neck cancer and aids in diagnosis / Oral Maxillofac Surg Clin North Am 26:123~141
Bray F / 2018 / Global cancer statistics 2018 : GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185countries / CA Cancer J Clin 68:394~424
Sharma JD / 2019 / Head and neck squamous cell carcinoma in young adults: a hospital-based study / Indian J Med Paediatr Oncol 40(S1):S18~S22
Grégoire V / 2010 / Squamous cell carcinoma of the head and neck: EHNS-ESMO-ESTRO Clinical Practice Guidelines for diagnosis, treatment and follow-up / Ann Oncol 21(Suppl 5):v184~v186
Vigneswaran N / 2014 / Epidemiologic trends in head and neck cancer and aids in diagnosis / Oral Maxillofac Surg Clin North Am 26:123~141
Bray F / 2018 / Global cancer statistics 2018 : GLOBOCAN estimates of incidence and mortality worldwide for 36 cancers in 185countries / CA Cancer J Clin 68:394~424
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