Evidence map›Paper›PMID 28575105›Full record

ArticlePloS one2017

Assessment of treatment response during chemoradiation therapy for pancreatic cancer based on quantitative radiomic analysis of daily CTs: An exploratory study.

Xiaojian Chen, Kiyoko Oshima, Diane Schott, Hui Wu, William Hall, Yingqiu Song, Yalan Tao, Dingjie Li, Cheng Zheng, Paul Knechtges and 2 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 80 citations in OpenAlex.

  1. Pooled it
  2. Pancreas SBRT requires online adaptive treatment to adequately manage motion.Physical and engineering sciences in medicine · 2026
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  3. Review
  4. Review
  5. Machine learning-based analysis ofPhysical and engineering sciences in medicine · 2024
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  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Update on quantitative radiomics of pancreatic tumors.Abdominal radiology (New York) · 2022
    Review
  13. Review
  14. Review
  15. Article
  16. Basic Pancreatic Lesions: Radiologic-pathologic Correlation.Journal of translational internal medicine · 2022
    Article
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Xiaojian ChenDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.ORCID http://orcid.org/0000-0003-1579-0706
Kiyoko OshimaDepartment of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Diane SchottDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Hui WuDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
William HallDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Yingqiu SongDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Yalan TaoDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Dingjie LiDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Cheng ZhengBiostatistics, Joseph. J. Zilber School of Public Health, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin, United States of America.
Paul KnechtgesDepartment of Radiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Beth EricksonDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
X Allen LiDepartment of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America.
Medical College of Wisconsin · USSun Yat-sen University · CNUnion Hospital · CNUniversity of Wisconsin–Milwaukee · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeIn an effort for early assessment of treatment response, we investigate radiation induced changes in quantitative CT features of tumor during the delivery of chemoradiation therapy (CRT) for pancreatic cancer.

methodsDiagnostic-quality CT data acquired daily during routine CT-guided CRT using a CT-on-rails for 20 pancreatic head cancer patients were analyzed. On each daily CT, the pancreatic head, the spinal cord and the aorta were delineated and the histograms of CT number (CTN) in these contours were extracted. Eight histogram-based radiomic metrics including the mean CTN (MCTN), peak position, volume, standard deviation (SD), skewness, kurtosis, energy and entropy were calculated for each fraction. Paired t-test was used to check the significance of the change of specific metric at specific time. GEE model was used to test the association between changes of metrics over time for different pathology responses.

resultsIn general, CTN histogram in the pancreatic head (but not in spinal cord) changed during the CRT delivery. Changes from the 1st to the 26th fraction in MCTN ranged from -15.8 to 3.9 HU with an average of -4.7 HU (p<0.001). Meanwhile the volume decreased, the skewness increased (less skewed), and the kurtosis decreased (less peaked). The changes of MCTN, volume, skewness, and kurtosis became significant after two weeks of treatment. Patient pathological response is associated with the changes of MCTN, SD, and skewness. In cases of good response, patients tend to have large reductions in MCTN and skewness, and large increases in SD and kurtosis.

conclusionsSignificant changes in CT radiomic features, such as the MCTN, skewness, and kurtosis in tumor were observed during the course of CRT for pancreas cancer based on quantitative analysis of daily CTs. These changes may be potentially used for early assessment of treatment response and stratification for therapeutic intensification.

Indexed as

ChemoradiotherapyTomography, X-Ray ComputedAgedFemaleHumansMaleMiddle AgedPancreasPancreatic NeoplasmsTreatment Outcome

Identifiers

PMID28575105
PMCPMC5456365
OpenAlexW2620578265

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.