ArticleJournal of applied clinical medical physics2020
3D-printed headrest for frameless Gamma Knife radiosurgery: Design and validation.
Article in Journal of applied clinical medical physics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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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.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- A reusable and universal size polyethylene terephthalate glycol head fixation device for Gamma Knife Radiosurgery: a prospective comparative cohort study.BMC neurology · 2026Article
- Clinical experience in the use of 3D printing as a rapid replacement of traditional radiation therapy immobilization materials.Journal of applied clinical medical physics · 2023Article
- Avoiding a Collision in Gamma Knife Radiosurgery : A Modified Mask Fixation Method.Journal of Korean Neurosurgical Society · 2023Article
- Mechanical and medical imaging properties of 3D-printed materials as tissue equivalent materials.Journal of applied clinical medical physics · 2022Article
- Development of a new poly-ε-caprolactone with low melting point for creating a thermoset mask used in radiation therapy.Scientific reports · 2021Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeFrameless Gamma Knife stereotactic radiosurgery (SRS) uses a moldable headrest with a thermoplastic mask for patient immobilization. An efficacious headrest is time consuming and difficult to fabricate due to the expertise required to mold the headrest within machine geometrical limitations. The purpose of this study was to design and validate a three-dimensional (3D)-printed headrest for frameless Gamma Knife SRS that can overcome these difficulties. MATERIALS AND
methodsA headrest 3D model designed to fit within the frameless adapter was 3D printed. Dosimetric properties of the 3D-printed headrest and a standard-of-care moldable headrest were compared by delivering a Gamma Knife treatment to an anthropomorphic head phantom fitted with an ionization chamber and radiochromic film. Ionization measurements were compared to assess headrest attenuation and a gamma index was calculated to compare the film dose distributions. A volunteer study was conducted to assess the immobilization efficacy of the 3D-printed headrest compared to the moldable headrest. Five volunteers had their head motion tracked by a surface tracking system while immobilized in each headrest for 20 min. The recorded motion data were used to calculate the average volunteer movement and a paired t-test was performed.
resultsThe ionization chamber readings were within 0.55% for the 3D-printed and moldable headrests, and the calculated gamma index showed 98.6% of points within dose difference of 2% and 2 mm distance to agreement for the film measurement. These results demonstrate that the headrests were dosimetrically equivalent within the experimental uncertainties. Average motion (±standard deviation) of the volunteers while immobilized was 1.41 ± 0.43 mm and 1.36 ± 0.51 mm for the 3D-printed and moldable headrests, respectively. The average observed volunteer motion between headrests was not statistically different, based on a P-value of 0.466.
conclusionsWe designed and validated a 3D-printed headrest for immobilizing patients undergoing frameless Gamma Knife SRS.
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