Evidence map›Paper›PMID 31578153›Full record

ArticleJournal of translational medicine2019

Tissue diagnosis during colorectal cancer surgery using optical sensing: an in vivo study.

E J M Baltussen, S G Brouwer de Koning, J Sanders, A G J Aalbers, N F M Kok, G L Beets, B H W Hendriks, H J C M Sterenborg, K F D Kuhlmann, T J M Ruers

Abstract read
In one paragraph

Article in Journal of translational medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

11 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

10 authors.

E J M BaltussenDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands. l.baltussen@nki.nl.ORCID 0000-0003-3526-8210
S G Brouwer de KoningDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
J SandersDepartment of Pathology, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
A G J AalbersDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
N F M KokDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
G L BeetsDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
B H W HendriksDepartment of In-body Systems, Philips Research, Eindhoven, The Netherlands.
H J C M SterenborgDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
K F D KuhlmannDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.
T J M RuersDepartment of Surgery, Antoni van Leeuwenhoek Hospital - The Netherlands Cancer Institute, Amsterdam, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn colorectal cancer surgery there is a delicate balance between complete removal of the tumor and sparing as much healthy tissue as possible. Especially in rectal cancer, intraoperative tissue recognition could be of great benefit in preventing positive resection margins and sparing as much healthy tissue as possible. To better guide the surgeon, we evaluated the accuracy of diffuse reflectance spectroscopy (DRS) for tissue characterization during colorectal cancer surgery and determined the added value of DRS when compared to clinical judgement.

methodsDRS spectra were obtained from fat, healthy colorectal wall and tumor tissue during colorectal cancer surgery and results were compared to histopathology examination of the measurement locations. All spectra were first normalized at 800 nm, thereafter two support vector machines (SVM) were trained using a tenfold cross-validation. With the first SVM fat was separated from healthy colorectal wall and tumor tissue, the second SVM distinguished healthy colorectal wall from tumor tissue.

resultsPatients were included based on preoperative imaging, indicating advanced local stage colorectal cancer. Based on the measurement results of 32 patients, the classification resulted in a mean accuracy for fat, healthy colorectal wall and tumor of 0.92, 0.89 and 0.95 respectively. If the classification threshold was adjusted such that no false negatives were allowed, the percentage of false positive measurement locations by DRS was 25% compared to 69% by clinical judgement.

conclusionThis study shows the potential of DRS for the use of tissue classification during colorectal cancer surgery. Especially the low false positive rate obtained for a false negative rate of zero shows the added value for the surgeons. Trail registration This trail was performed under approval from the internal review board committee (Dutch Trail Register NTR5315), registered on 04/13/2015, https://www.trialregister.nl/trial/5175 .

Indexed as

Colorectal SurgeryAgedColorectal NeoplasmsFemaleHumansMaleMiddle AgedOptics and PhotonicsROC CurveSensitivity and SpecificitySpectrum AnalysisSurgeonsColorectal cancerDiffuse reflectance spectroscopyIn vivo studySupervised machine learning

Identifiers

PMID31578153
PMCPMC6775650

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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.