Dosimetric effect of the intestinal gas of online adaptive stereotactic body radiotherapy on target and critical organs without online electron density correction for pancreatic cancer Article Swipe
Chen Su
,
Hiroyuki Okamoto
,
Shie Nishioka
,
Tatsuya Sakasai
,
Daisuke Fujiyama
,
Yuki Miura
,
Yuki Tsunoda
,
Junichi Kuwahara
,
Satoshi Nakamura
,
Kotaro Iijima
,
Takahito Chiba
,
Keita Kaga
,
Mihiro Takemori
,
Hiroki Nakayama
,
Shouichi Katsuta
,
Koji Inaba
,
Hiroshi Igaki
,
Yuko Nakayama
,
Jun Itami
·
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1259/bjr.20200239
YOU?
·
· 2020
· Open Access
·
· DOI: https://doi.org/10.1259/bjr.20200239
Objective: This study aimed to assess the dosimetric effect of intestinal gas of stereotactic magnetic resonance (MR)-guided adaptive radiation therapy (SMART) on target and critical organs for pancreatic cancer without online electron density correction (EDC). Methods: Thirty pancreatic cancer patients who underwent online SMART were selected for this study. The treatment time of each stage and the total treatment time were recorded and analyzed. The concerned dose-volume parameters of target and organs-at-risk (OAR) were compared with and without an intestinal gas EDC using the Wilcoxon-signed rank test. Analysis items with p value < 0.05 were considered statistically significant. The relationships between dosimetric differences and intestinal gas volume variations were investigated using the Spearman test. Results: The average treatment time was 82 min, and the average EDC time was 8 min, which accounted for 10% of the overall treatment time. There were no significant differences in CTV (GTV), PTV, bowel, stomach, duodenum, and skin (p > 0.05) with respect to dose volume parameters. For the D max of gastrointestinal organs (p = 0.03), the mean dose of the liver (p = 0.002) and kidneys (p = 0.03 and p = 0.04 for the left and right kidneys, respectively), there may be a risk of slight overestimation compared with EDC, and for the D max of the spinal cord (p = 0.02), there may be a risk of slight underestimation compared with EDC. A weak correlation for D 95 in the PTV and D 0.5 cc in the duodenum was observed. Conclusion: For patients with similar inter-fractional intestinal gas distribution, EDC had little dosimetric effects on the D 0.5 cc of all GI organs and dose volume parameters of target in most plans. Advances in knowledge: By omitting the EDC of intestinal gas, the online SMART treatment time can be shortened.
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Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1259/bjr.20200239
- https://academic.oup.com/bjr/article-pdf/94/1119/20200239/54513726/bjr.20200239.pdf
- OA Status
- bronze
- Cited By
- 6
- References
- 25
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W3115347195
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W3115347195Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1259/bjr.20200239Digital Object Identifier
- Title
-
Dosimetric effect of the intestinal gas of online adaptive stereotactic body radiotherapy on target and critical organs without online electron density correction for pancreatic cancerWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2020Year of publication
- Publication date
-
2020-12-23Full publication date if available
- Authors
-
Chen Su, Hiroyuki Okamoto, Shie Nishioka, Tatsuya Sakasai, Daisuke Fujiyama, Yuki Miura, Yuki Tsunoda, Junichi Kuwahara, Satoshi Nakamura, Kotaro Iijima, Takahito Chiba, Keita Kaga, Mihiro Takemori, Hiroki Nakayama, Shouichi Katsuta, Koji Inaba, Hiroshi Igaki, Yuko Nakayama, Jun ItamiList of authors in order
- Landing page
-
https://doi.org/10.1259/bjr.20200239Publisher landing page
- PDF URL
-
https://academic.oup.com/bjr/article-pdf/94/1119/20200239/54513726/bjr.20200239.pdfDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
bronzeOpen access status per OpenAlex
- OA URL
-
https://academic.oup.com/bjr/article-pdf/94/1119/20200239/54513726/bjr.20200239.pdfDirect OA link when available
- Concepts
-
Medicine, Duodenum, Nuclear medicine, Pancreatic cancer, Magnetic resonance imaging, Radiation therapy, Cancer, Gastroenterology, Internal medicine, RadiologyTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
6Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 1, 2024: 1, 2023: 3, 2022: 1Per-year citation counts (last 5 years)
- References (count)
-
25Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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