dc.contributor.author | Johansen, Safora | |
dc.contributor.author | Hogg, Peter | |
dc.contributor.author | Mohammad Ali, Ali | |
dc.contributor.author | England, Andrew | |
dc.date.accessioned | 2018-09-27T14:17:47Z | |
dc.date.accessioned | 2018-10-05T06:52:40Z | |
dc.date.available | 2018-09-27T14:17:47Z | |
dc.date.available | 2018-10-05T06:52:40Z | |
dc.date.issued | 2018-09-14 | |
dc.identifier.citation | Johansen SJ, Hogg P, Mohammad Ali, England A. Construction and validation of a low cost paediatric pelvis phantom. European Journal of Radiology. 2018;108:84-91 | en |
dc.identifier.issn | 0720-048X | |
dc.identifier.issn | 0720-048X | |
dc.identifier.issn | 1872-7727 | |
dc.identifier.uri | https://hdl.handle.net/10642/6245 | |
dc.description.abstract | PURPOSE: Imaging phantoms can be cost prohibitive, therefore a need exists to produce low cost alternatives which are fit for purpose. This paper describes the development and validation of a low cost paediatric pelvis phantom based on the anatomy of a 5-year-old child.
METHODS: Tissue equivalent materials representing paediatric bone (Plaster of Paris; PoP) and soft tissue (Poly methyl methacrylate; PMMA) were used. PMMA was machined to match the bony anatomy identified from a CT scan of a 5-year-old child and cavities were created for infusing the PoP. Phantom validation comprised physical and visual measures. Physical included CT density comparison between a CT scan of a 5-year old child and the phantom and Signal to Noise Ratio (SNR) comparative analysis of anteroposterior phantom X-ray images against a commercial anthropomorphic phantom. Visual analysis using a psychometric image quality scale (face validity).
RESULTS: CT density, the percentage difference between cortical bone, soft tissue and their equivalent tissue substitutes were -4.7 to -4.1% and -23.4%, respectively. For SNR, (mAs response) there was a strong positive correlation between the two phantoms (r>0.95 for all kVps). For kVp response, there was a strong positive correlation between 1 and 8 mAs (r=0.85), this then decreased as mAs increased (r=-0.21 at 20 mAs). Psychometric scale results produced a Cronbach’s Alpha of almost 0.8.
CONCLUSIONS: Physical and visual measures suggest our low-cost phantom has suitable anatomical characteristics for X-ray imaging. Our phantom could have utility in dose and image quality optimisation studies. | en |
dc.language.iso | en | en |
dc.publisher | Elsevier | en |
dc.relation.ispartofseries | European Journal of Radiology;Volume 108, November 2018 | |
dc.rights | Article postprint licensed under a CC-BY-NC-ND license. | en |
dc.subject | Pelvis phantoms | en |
dc.subject | Low-costs | en |
dc.subject | Dose optimisations | en |
dc.subject | Validations | en |
dc.subject | Developments | en |
dc.title | Construction and validation of a low cost paediatric pelvis phantom | en |
dc.type | Journal article | en |
dc.type | Peer reviewed | en |
dc.date.updated | 2018-09-27T14:17:46Z | |
dc.description.version | acceptedVersion | en |
dc.identifier.doi | http://dx.doi.org/10.1016/j.ejrad.2018.09.015 | |
dc.identifier.cristin | 1615241 | |
dc.source.journal | European Journal of Radiology | |