Evidence map›Paper›PMID 36001389›Full record

ArticleJournal of applied clinical medical physics2022

ExacTrac Dynamic workflow evaluation: Combined surface optical/thermal imaging and X-ray positioning.

Vanessa Da Silva Mendes, Michael Reiner, Lili Huang, Daniel Reitz, Katrin Straub, Stefanie Corradini, Maximilian Niyazi, Claus Belka, Christopher Kurz, Guillaume Landry and 1 more

Open access · goldAbstract read
In one paragraph

Article in Journal of applied clinical medical physics, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
7.7field-weighted citation impact, top 2% 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

21 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
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  8. Use of surface tracking recordings to identify pitfalls during surface-guided radiotherapy.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2025
    Article
  9. Affordable realtime respiratory monitoring system for radiation oncology.Journal of applied clinical medical physics · 2025
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  10. Article
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  17. Stereoscopic X-ray image and thermo-optical surface guidance for breast cancer radiotherapy in deep inspiration breath-hold.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2024
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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

11 authors at 2 institutions in 1 country.

Vanessa Da Silva MendesDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Michael ReinerDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Lili HuangDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Daniel ReitzDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Katrin StraubDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Stefanie CorradiniDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Maximilian NiyaziDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Claus BelkaDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Christopher KurzDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Guillaume LandryDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Philipp FreisledererDepartment of Radiation Oncology, University Hospital, LMU Munich, Munich, Germany.
Ludwig-Maximilians-Universität München · DELMU Klinikum · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In modern radiotherapy (RT), especially for stereotactic radiotherapy or stereotactic radiosurgery treatments, image guidance is essential. Recently, the ExacTrac Dynamic (EXTD) system, a new combined surface-guided RT and image-guided RT (IGRT) system for patient positioning, monitoring, and tumor targeting, was introduced in clinical practice. The purpose of this study was to provide more information about the geometric accuracy of EXTD and its workflow in a clinical environment. The surface optical/thermal- and the stereoscopic X-ray imaging positioning systems of EXTD was evaluated and compared to cone-beam computed tomography (CBCT). Additionally, the congruence with the radiation isocenter was tested. A Winston Lutz test was executed several times over 1 year, and repeated end-to-end positioning tests were performed. The magnitude of the displacements between all systems, CBCT, stereoscopic X-ray, optical-surface imaging, and MV portal imaging was within the submillimeter range, suggesting that the image guidance provided by EXTD is accurate at any couch angle. Additionally, results from the evaluation of 14 patients with intracranial tumors treated with open-face masks are reported, and limited differences with a maximum of 0.02 mm between optical/thermal- and stereoscopic X-ray imaging were found. As the optical/thermal positioning system showed a comparable accuracy to other IGRT systems, and due to its constant monitoring capability, it can be an efficient tool for detecting intra-fractional motion and for real-time tracking of the surface position during RT.

Indexed as

RadiosurgeryRadiotherapy, Image-GuidedCone-Beam Computed TomographyHumansPatient PositioningPhantoms, ImagingRadiographyRadiotherapy Planning, Computer-AssistedWorkflowX-RaysIGRToptical surface imagingSGRTstereoscopic X-ray imagingX-ray intra-fractional monitoring

Identifiers

PMID36001389
PMCPMC9588276
OpenAlexW4292941873

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.