Assessment of Phantom Dosimetry and Image Quality of Accuitomo 170 and MiniCAT Cone-Beam Computed Tomography Public Deposited

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  • March 19, 2019
Creator
  • Erickson, Robert
    • Affiliation: School of Dentistry, Oral Pathology Section, Oral and Maxillofacial Radiology Graduate Program
Abstract
  • Introduction: Escalating use of cone-beam computed tomography contributes to a burgeoning public health issue regarding the amount of ionizing radiation associated with diagnostic imaging delivered to the population, especially children. Methods: Effective doses were calculated and compared from optically stimulated dosimeter measurements and a previously validated protocol using anthropomorphic adult and child phantoms scanned with the Accuitomo 170 (J. Morita, Japan) and MiniCAT (Xoran Technologies, Ann Arbor, MI) CBCT machines. Results: Average child phantom doses (440 and 117 µSv) were 60% and 56% greater than the adult doses from the Accuitomo 170 and MiniCAT units respectively. Thyroid dose, particularly to the child, had a significant contribution to the overall dose. Conclusion: Effective dose for the two units increased as FOV increased. The child dose, especially the thyroid, increased when compared to the adult phantom. Child protocols and the smallest FOV helps reduce the child's effective dose.
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  • In Copyright
Advisor
  • Ivanovic, Marija
  • Mol, André
  • Ludlow, John B.
Degree
  • Master of Science
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2014
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Place of publication
  • Chapel Hill, NC
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