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Carbon-ion scanning lung treatment planning with respiratory-gated phase-controlled rescanning: simulation study using 4-dimensional CT data

Overview of attention for article published in Radiation Oncology, November 2014
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Title
Carbon-ion scanning lung treatment planning with respiratory-gated phase-controlled rescanning: simulation study using 4-dimensional CT data
Published in
Radiation Oncology, November 2014
DOI 10.1186/s13014-014-0238-y
Pubmed ID
Authors

Wataru Takahashi, Shinichiro Mori, Mio Nakajima, Naoyoshi Yamamoto, Taku Inaniwa, Takuji Furukawa, Toshiyuki Shirai, Koji Noda, Keiichi Nakagawa, Tadashi Kamada

Abstract

BackgroundTo moving lung tumors, we applied a respiratory-gated strategy to carbon-ion pencil beam scanning with multiple phase-controlled rescanning (PCR). In this simulation study, we quantitatively evaluated dose distributions based on 4-dimensional CT (4DCT) treatment planning.MethodsVolumetric 4DCTs were acquired for 14 patients with lung tumors. Gross tumor volume, clinical target volume (CTV) and organs at risk (OARs) were delineated. Field-specific target volumes (FTVs) were calculated, and 48Gy(RBE) in a single fraction was prescribed to the FTVs delivered from four beam angles. The dose assessment metrics were quantified by changing the number of PCR and the results for the ungated and gated scenarios were then compared.ResultsFor the ungated strategy, the mean dose delivered to 95% of the volume of the CTV (CTV-D95) was in average 45.3¿±¿0.9 Gy(RBE) even with a single rescanning (1¿×¿PCR). Using 4¿×¿PCR or more achieved adequate target coverage (CTV-D95¿=¿46.6¿±¿0.3 Gy(RBE) for ungated 4¿×¿PCR) and excellent dose homogeneity (homogeneity index =1.0¿±¿0.2% for ungated 4¿×¿PCR). Applying respiratory gating, percentage of lung receiving at least 20 Gy(RBE) (lung-V20) and heart maximal dose, averaged over all patients, significantly decreased by 12% (p¿<¿0.05) and 13% (p¿<¿0.05), respectively.ConclusionsFour or more PCR during PBS-CIRT improved dose conformation to moving lung tumors without gating. The use of a respiratory-gated strategy in combination with PCR reduced excessive doses to OARs.

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The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 39 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 39 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 11 28%
Student > Ph. D. Student 7 18%
Student > Master 4 10%
Student > Postgraduate 2 5%
Student > Doctoral Student 1 3%
Other 1 3%
Unknown 13 33%
Readers by discipline Count As %
Physics and Astronomy 8 21%
Medicine and Dentistry 5 13%
Pharmacology, Toxicology and Pharmaceutical Science 2 5%
Agricultural and Biological Sciences 1 3%
Computer Science 1 3%
Other 5 13%
Unknown 17 44%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 29 December 2014.
All research outputs
#13,416,174
of 22,770,070 outputs
Outputs from Radiation Oncology
#649
of 2,049 outputs
Outputs of similar age
#123,951
of 258,972 outputs
Outputs of similar age from Radiation Oncology
#21
of 81 outputs
Altmetric has tracked 22,770,070 research outputs across all sources so far. This one is in the 39th percentile – i.e., 39% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,049 research outputs from this source. They receive a mean Attention Score of 2.7. This one has gotten more attention than average, scoring higher than 64% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 258,972 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 50% of its contemporaries.
We're also able to compare this research output to 81 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 71% of its contemporaries.