Design of 3D-Printed Nasopharyngeal Swabs for Children is Enabled by Radiologic Imaging

AJNR Am J Neuroradiol. 2020 Dec;41(12):2345-2347. doi: 10.3174/ajnr.A6794. Epub 2020 Aug 27.


3D-printed nasopharyngeal swabs for COVID-19 molecular diagnostic testing address the national shortage of swabs. Swab designs for adult use were placed in the public domain in March 2020. Swabs for pediatric use, however, need to be smaller and more flexible to navigate delicate pediatric nasopharyngeal cavities. We describe a novel use of maxillofacial CT scans to aid in the design of pediatric nasopharyngeal swabs.

MeSH terms

  • Adult
  • COVID-19 / diagnosis*
  • COVID-19 Testing / instrumentation*
  • Child
  • Child, Preschool
  • Computer-Aided Design*
  • Disposable Equipment
  • Female
  • Humans
  • Infant
  • Male
  • Models, Anatomic*
  • Nasopharynx / diagnostic imaging
  • Nasopharynx / virology
  • Pediatrics / instrumentation*
  • Printing, Three-Dimensional*
  • SARS-CoV-2
  • Tomography, X-Ray Computed