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ID 53554
JaLCDOI
フルテキストURL
Thumnail 69_4_189.pdf 4.08 MB
著者
Yamashita, Mako Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Katayama, Norihisa Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Waki, Takahiro Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Katsui, Kuniaki Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Himei, Kengo Department of Radiology, Japanese Red Cross Okayama Hospital
Takemoto, Mitsuhiro Department of Radiology, Japanese Red Cross Society Himeji Hospital
Kanazawa, Susumu Department of Radiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
抄録
This study compared field-in-field (FIF) radiotherapy with conformal radiotherapy with physical wedges for the treatment of unilateral cervical malignant lymphoma. Two treatment plans, the FIF technique and conformal RT, were generated for each of 32 patients with unilateral cervical malignant lymphoma. To compare the 2 treatment plans, dose-volume histograms of the planning target volume (PTV), the thyroid, submandibular gland, carotid artery, mucosa, spinal cord, and surrounding normal tissue, and monitor unit (MU) were analyzed. The FIF technique showed significant reduction in the mean dose of thyroid, submandibular gland, carotid artery and mucosa, the maximum dose of the spinal cord and PTV, and the volume receiving>107% of the prescribed dose of surrounding normal tissue (p<0.001). In addition, there were gains in the homogeneity index of the PTV for FIF. Furthermore, the total MU was also lower for the FIF technique than for the wedge technique (p<0.001). Compared with the wedge technique, the FIF technique improved the dose homogeneity of the PTV, reduced the dose to normal structures, and was associated with fewer MUs in the treatment of patients with cervical malignant lymphoma.
キーワード
field-in-field technique
wedge
lymphoma
monitor units
dose-volume histogram
Amo Type
Original Article
発行日
2015-08
出版物タイトル
Acta Medica Okayama
69巻
4号
出版者
Okayama University Medical School
開始ページ
189
終了ページ
195
ISSN
0386-300X
NCID
AA00508441
資料タイプ
学術雑誌論文
言語
English
著作権者
CopyrightⒸ 2015 by Okayama University Medical School
論文のバージョン
publisher
査読
有り
PubMed ID
Web of Sience KeyUT