In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 7 ( 2023-7-12), p. e0285432-
Abstract:
Existing magnetic resonance imaging (MRI) reference objects, or phantoms, are typically constructed from simple liquid or gel solutions in containers with specific geometric configurations to enable multi-year stability. However, there is a need for phantoms that better mimic the human anatomy without barriers between the tissues. Barriers result in regions without MRI signal between the different tissue mimics, which is an artificial image artifact. We created an anatomically representative 3D structure of the brain that mimicked the T1 and T2 relaxation properties of white and gray matter at 3 T. While the goal was to avoid barriers between tissues, the 3D printed barrier between white and gray matter and other flaws in the construction were visible at 3 T. Stability measurements were made using a portable MRI system operating at 64 mT, and T2 relaxation time was stable from 0 to 22 weeks. The phantom T1 relaxation properties did change from 0 to 10 weeks; however, they did not substantially change between 10 weeks and 22 weeks. The anthropomorphic phantom used a dissolvable mold construction method to better mimic anatomy, which worked in small test objects. The construction process, though, had many challenges. We share this work with the hope that the community can build on our experience.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0285432
DOI:
10.1371/journal.pone.0285432.g001
DOI:
10.1371/journal.pone.0285432.g002
DOI:
10.1371/journal.pone.0285432.g003
DOI:
10.1371/journal.pone.0285432.g004
DOI:
10.1371/journal.pone.0285432.g005
DOI:
10.1371/journal.pone.0285432.g006
DOI:
10.1371/journal.pone.0285432.t001
DOI:
10.1371/journal.pone.0285432.t002
DOI:
10.1371/journal.pone.0285432.t003
DOI:
10.1371/journal.pone.0285432.t004
DOI:
10.1371/journal.pone.0285432.t005
DOI:
10.1371/journal.pone.0285432.s001
DOI:
10.1371/journal.pone.0285432.s002
DOI:
10.1371/journal.pone.0285432.s003
DOI:
10.1371/journal.pone.0285432.s004
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3
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