Evidence map›Paper›PMID 31297039›Full record

ArticleReports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology

Retrospective assessment of a single fiducial marker tracking regimen with robotic stereotactic body radiation therapy for liver tumours.

Masao Nakayama, Kazuyuki Uehara, Hideki Nishimura, Shuhei Tamura, Yoshiki Munetomo, Shinji Tsudou, Hiroshi Mayahara, Naritoshi Mukumoto, Moshi Geso, Ryohei Sasaki

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In one paragraph

Article in Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–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

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Dosimetric comparison of dynamic conformal arc integrated with segment shape optimization and variable dose rate versus volumetric modulated arc therapy for liver SBRT.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology
    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

10 authors.

Masao NakayamaDivision of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuou-ku, Kobe City, Hyogo 650-0017, Japan.
Kazuyuki UeharaDivision of Radiation Oncology, Kobe Minimally Invasive Cancer Center, 8-5-1 Minatojima-nakamachi, Chuou-ku, Kobe City, Hyogo 650-0046, Japan.
Hideki NishimuraDivision of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuou-ku, Kobe City, Hyogo 650-0017, Japan.
Shuhei TamuraDivision of Radiation Oncology, Kobe Minimally Invasive Cancer Center, 8-5-1 Minatojima-nakamachi, Chuou-ku, Kobe City, Hyogo 650-0046, Japan.
Yoshiki MunetomoDivision of Radiation Oncology, Kobe Minimally Invasive Cancer Center, 8-5-1 Minatojima-nakamachi, Chuou-ku, Kobe City, Hyogo 650-0046, Japan.
Shinji TsudouDepartment of Radiation Oncology, Hyogo Cancer Center, 13-70 Kitaojicho, Akashi City, Hyogo 637-8558, Japan.
Hiroshi MayaharaDivision of Radiation Oncology, Kobe Minimally Invasive Cancer Center, 8-5-1 Minatojima-nakamachi, Chuou-ku, Kobe City, Hyogo 650-0046, Japan.
Naritoshi MukumotoDivision of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuou-ku, Kobe City, Hyogo 650-0017, Japan.
Moshi GesoDiscipline of Medical Radiations, School of Biomedical & Health Sciences, RMIT University, Bundoora Campus, Victoria 3083, Australia.
Ryohei SasakiDivision of Radiation Oncology, Kobe University Graduate School of Medicine, 7-5-2 Kusunokicho, Chuou-ku, Kobe City, Hyogo 650-0017, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo investigate tumour motion tracking uncertainties in the CyberKnife Synchrony system with single fiducial marker in liver tumours.

backgroundIn the fiducial-based CyberKnife real-time tumour motion tracking system, multiple fiducial markers are generally used to enable translation and rotation corrections during tracking. However, sometimes a single fiducial marker is employed when rotation corrections are not estimated during treatment. MATERIALS AND

methodsData were analysed for 32 patients with liver tumours where one fiducial marker was implanted. Four-dimensional computed tomography (CT) scans were performed to determine the internal target volume (ITV). Before the first treatment fraction, the CT scans were repeated and the marker migration was determined. Log files generated by the Synchrony system were obtained after each treatment and the correlation model errors were calculated. Intra-fractional spine rotations were examined on the spine alignment images before and after each treatment.

resultsThe mean (standard deviation) ITV margin was 4.1 (2.3) mm, which correlated weakly with the distance between the fiducial marker and the tumour. The mean migration distance of the marker was 1.5 (0.7) mm. The overall mean correlation model error was 1.03 (0.37) mm in the radial direction. The overall mean spine rotations were 0.27° (0.31), 0.25° (0.22), and 0.23° (0.26) for roll, pitch, and yaw, respectively. The treatment time was moderately associated with the correlation model errors and weakly related to spine rotation in the roll and yaw planes.

conclusionsMore caution and an additional safety margins are required when tracking a single fiducial marker.

Indexed as

AP, anterior–posteriorCTV, clinical target volumeCyberKnifeFiducial marker trackingGTV, gross tumour volumeITV, internal target volumeLED, light-emitting diodeLiver tumourLR, left–rightPTV, planning target volumeSBRT, stereotactic body radiation therapySD, standard deviationSI, superior–inferiorSynchrony systemXST, Xsight Spine Tracking

Identifiers

PMID31297039
PMCPMC6595081

What OpenQuestion holds

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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.