A Novel Marker Based Method to Teeth Alignment in MRI
Naoko Niikuni; Tero Soukka; Riitta Parkkola; Risto-Pekka Happonen; Jean-Marc Luukinen; Daniel Aalto; Antti Ojalammi; Päivi Jääsaari; Jarmo Malinen; Jani Saunavaara
A Novel Marker Based Method to Teeth Alignment in MRI
Naoko Niikuni
Tero Soukka
Riitta Parkkola
Risto-Pekka Happonen
Jean-Marc Luukinen
Daniel Aalto
Antti Ojalammi
Päivi Jääsaari
Jarmo Malinen
Jani Saunavaara
DE GRUYTER POLAND SP ZOO
Julkaisun pysyvä osoite on:
https://urn.fi/URN:NBN:fi-fe2021042719103
https://urn.fi/URN:NBN:fi-fe2021042719103
Tiivistelmä
Magnetic resonance imaging (MRI) can precisely capture the anatomy of the vocal tract. However, the crowns of teeth are not visible in standard MRI scans. In this study, a marker-based teeth alignment method is presented and evaluated. Ten patients undergoing orthognathic surgery were enrolled. Supraglottal airways were imaged preoperatively using structural MRI. MRI visible markers were developed, and they were attached to maxillary teeth and corresponding locations on the dental casts. Repeated measurements of intermarker distances in MRI and in a replica model was compared using linear regression analysis. Dental cast MRI and corresponding caliper measurements did not differ significantly. In contrast, the marker locations in vivo differed somewhat from the dental cast measurements likely due to marker placement inaccuracies. The markers were clearly visible in MRI and allowed for dental models to be aligned to head and neck MRI scans.
Kokoelmat
- Rinnakkaistallenteet [19207]