Evidence map›Paper›PMID 38865585›Full record

ArticleJournal of applied clinical medical physics2024

The impact of the titanium cranial hardware in proton single-field uniform dose plans.

Peng Wang, Fionnbarr Timothy O'Grady, Martin Janson, Daniel Kim, Kevin S Choe, MacLennan Grayden, Caroline K Bamberger, Jiajin Fan

Abstract read
In one paragraph

Article in Journal of applied clinical medical physics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Article
  2. Practical considerations for handling implants in proton therapy.Journal of applied clinical medical physics · 2025
    Article
  3. 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

8 authors.

Peng WangAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.
Fionnbarr Timothy O'GradyAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.ORCID https://orcid.org/0000-0002-9501-1735
Martin JansonRaySearch Laboratories, Stockholm, Sweden.
Daniel KimAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.
Kevin S ChoeAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.
MacLennan GraydenAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.
Caroline K BambergerAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.ORCID https://orcid.org/0009-0003-6364-0574
Jiajin FanAdvanced Radiation Oncology and Proton Therapy, Inova Health System, Fairfax, Virginia, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNeurosurgical cranial titanium mesh and screws are commonly encountered in postoperative radiation therapy. However, only a limited number of reports are available in the context of proton therapy, resulting in a lack of consensus among the proton centers regarding the protocol for handling the hardware. PURPOSE: This study is to examine the impact of the hardware in proton plans. The results serve as evidence for proton centers to generate standard operating procedures to manage the hardware in proton treatment.

methodsPlans with different gantry angles and material overrides are generated on the CT images of a phantom made of the hardware. The dose distributions of the plans with and without material override, at different depths are compared. Films and ionization chambers are used to measure the plans and the measurements are compared to the treatment planning system (TPS) calculations by gamma analysis.

resultsThere are some overdose and underdose regions downstream of the hardware. The overdose and underdose values are within a few percent of the prescribed dose when multiple fields with large hinge angles are used. The gamma analysis results show that the measurements agree with the TPS calculations within limits that are clinically relevant.

conclusionThe study has demonstrated the influence of the hardware on proton plans. Based on the result of this study, a standard operating procedure of managing the hardware has been implemented in our clinic.

Indexed as

Organs at RiskPhantoms, ImagingProton TherapyRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedTitaniumHumansSkullTomography, X-Ray ComputedTitaniumcranial titanium hardwareproton beam perturbationproton Monte Carlo dose calculationproton SFO planningproton therapy

Identifiers

PMID38865585
PMCPMC11492323

What OpenQuestion holds

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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.