Evidence map›Paper›PMID 41732732›Full record

ArticlePhysics and imaging in radiation oncology2026

Cardiac device motion tracking from kilovoltage projections during stereotactic arrhythmia radioablation.

Wenjuan Xiong, Doan Trang Nguyen, Daryl Wilding-McBride, Paul J Keall, Chandrima Sengupta, Melanie Grehn, Hofmaier Jan, Stefanie Corradini, Mirko Fischer, Merten Roland and 4 more

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Article in Physics and imaging in radiation oncology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

14 authors.

Wenjuan XiongSchool of Health and Biomedical Sciences, RMIT University, Victoria, Australia.
Doan Trang NguyenImage X Institute, The University of Sydney, New South Wales, Australia.
Daryl Wilding-McBrideSchool of Health and Biomedical Sciences, RMIT University, Victoria, Australia.
Paul J KeallImage X Institute, The University of Sydney, New South Wales, Australia.
Chandrima SenguptaImage X Institute, The University of Sydney, New South Wales, Australia.
Melanie GrehnDepartment of Radiation Oncology, University Medical Center Schleswig-Holstein, Kiel, Germany.
Hofmaier JanDepartment of Radiation Oncology, University Hospital of the Ludwig-Maximilians-University, Munich, Germany.
Stefanie CorradiniDepartment of Radiation Oncology, University Hospital of the Ludwig-Maximilians-University, Munich, Germany.
Mirko FischerDepartment of Radiation Oncology, Hannover Medical School, Hannover, Germany.
Merten RolandDepartment of Radiation Oncology, Hannover Medical School, Hannover, Germany.
Oliver BlanckDepartment of Radiation Oncology, University Medical Center Schleswig-Holstein, Kiel, Germany.
Judit Boda-HeggemannDepartment of Radiation Oncology, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
Lena KaestnerDepartment of Radiation Oncology, University Medical Center Mannheim, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany.
Ricky O'BrienSchool of Health and Biomedical Sciences, RMIT University, Victoria, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background and purpose: Cardiac and respiratory motion present a challenge to accurate dose delivery during stereotactic arrhythmia radioablation (STAR). This study investigated a motion tracking method using kilovoltage (kV) images on a gantry-mounted linear accelerator during STAR. Materials and methods: An implantable cardioverter-defibrillator (ICD) lead tip was used for motion tracking. Planning computed tomography and cone beam computed tomography scans were analysed retrospectively on ten patients treated with STAR in RAdiosurgery for VENtricular TAchycardia (RAVENTA) (four patients underwent deep inspiratory breath-hold, two with free breathing, three under abdominal compression, and one using high frequency ventilation). A template-matching approach was developed to segment ICD lead tips in kV projections, with successful segmentation defined as a segmented position within 2 mm of the two-dimensional (2D) ground truth derived from manual annotations. A probability distribution function method was used to convert 2D coordinates to three-dimensional (3D) trajectories. 3D trajectories from the 2D ground truth were used to measure ICD lead tip displacements from its mean position. Differences between 3D trajectories from 2D ground truth and segmentations were analysed. Results: The median (range) 2D segmentation success rate was 85% (71-96%). Median (range) motion displacements were 1.4 (0.1-7.4) mm (left-right), 1.5 (0.1-10.4) mm (superior-inferior), and 0.8 (0.0-6.3) mm (anterior-posterior). The median (range) proportion of 3D estimations with errors below 2 mm in all axes was 78% (43-96%). Conclusions: ICD lead tip motion showed patient-specific variability. This study presented a potential 3D motion tracking method for ICD lead tips during STAR.

Indexed as

Cardiac motionKilovoltage imagesRespiratory motionStereotactic arrhythmia radioablationVentricular tachycardia

Identifiers

PMID41732732
PMCPMC12925050

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