Evidence map›Paper›PMID 29594230›Full record

ArticleClinical and translational radiation oncology2017

Local control and overall survival after frameless radiosurgery: A single center experience.

Angelika Bilger, Florian Frenzel, Oliver Oehlke, Rolf Wiehle, Dusan Milanovic, Vesna Prokic, Carsten Nieder, Anca-Ligia Grosu

Open access · goldAbstract read
In one paragraph

Article in Clinical and translational radiation oncology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 17% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 35 citations in OpenAlex.

  1. Pooled it
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  4. Surface guided radiation therapy with an innovative open-face mask and mouth bite: patient motion management in brain stereotactic radiotherapy.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 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

8 authors at 3 institutions in 2 countries.

Angelika BilgerDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Florian FrenzelDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Oliver OehlkeDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Rolf WiehleDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Dusan MilanovicDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Vesna ProkicDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
Carsten NiederDepartment of Oncology and Palliative Medicine, Nordland Hospital, 8092 Bodø, Norway.
Anca-Ligia GrosuDepartment of Radiation Oncology, University Medical Center Freiburg, Medical Faculty Freiburg, Robert-Koch-Str.3, Freiburg, Germany.
University Medical Center Freiburg · DEDeutschen Konsortium für Translationale Krebsforschung · DEUiT The Arctic University of Norway · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionStereotactic radiosurgery (SRS) has been increasingly advocated for 1-3 small brain metastases. The goal of this study was to evaluate the clinical results in patients with brain metastases treated with LINAC-based SRS using a thermoplastic mask (non-invasive fixation system) and Image-Guided Radiotherapy (IGRT). MATERIAL AND

methodsIn this single-institution study 48 patients with 77 brain metastases were treated between February 2012 and January 2014. The prescribed dose was 20 Gy or 18 Gy as a single fraction. SRS was performed with a True Beam STX Novalis Radiosurgery LINAC (Varian Medical Systems). The verification of positioning was done using the BrainLAB ExacTrac ® X-ray 6D system and cone-beam CT.

resultsIn 69 of 77 treated brain metastases (90%) the follow-up was documented on MR imaging performed every 3 months. Mean follow-up time was 10.86 months. Estimated 1-year local control was 83%, using the Kaplan-Meier method. In 7/69 brain metastases (10%) local failure (LF) was diagnosed. Median progression free survival (PFS) was 3.73 months, largely due to distant brain relapse. A GTV of ≤2.0 cm

conclusionLINAC-based frameless SRS with the BrainLAB Mask using the BrainLAB ExacTrac ® X-ray 6D system for patient positioning is well tolerated, safe and leads to favorable crude local control of 90%. In our experience, local control after frameless (ringless) SRS is as good as ring-based SRS reported in literature. Without invasive head fixation, radiotherapy is more comfortable for patients.

Indexed as

Brain metastasesCBCT, cone-beam CTCTCAE, Common Terminology Criteria for Adverse Events v4.0CT, computed tomographyDC, distant intracranial tumor controlDRR, digitally reconstructed radiographsGTV, Gross Tumor VolumeIGRT, Image-Guided RadiotherapyLC, Local ControlLINACLINAC, Linear AcceleratorOS, Overall SurvivalPFS, progression-free survivalPTV, planning target volumeRadiosurgeryRPA, recursive partitioning analysisSRS, Stereotactic radiosurgeryWBRT, Whole Brain Radiotherapy

Identifiers

PMID29594230
PMCPMC5862646
OpenAlexW2767483135

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.