A Novel Marker Based Method to Teeth Alignment in MRI
| Autor: | Risto-Pekka Happonen, Riitta Parkkola, Daniel Aalto, Tero Soukka, Jean Marc Luukinen, Jarmo Malinen, Naoko Niikuni, Antti Ojalammi, Jani Saunavaara, Päivi Jääsaari |
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| Přispěvatelé: | University of Turku, University of Alberta, Department of Mathematics and Systems Analysis, Turku University Hospital, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
MRI markers
Dental imaging medicine.diagnostic_test Computer science lcsh:Mathematics Biomedical Engineering vocal tract imaging Magnetic resonance imaging 030206 dentistry lcsh:QA1-939 030218 nuclear medicine & medical imaging 03 medical and health sciences stomatognathic diseases 0302 clinical medicine stomatognathic system Control and Systems Engineering medicine Instrumentation Biomedical engineering teeth superposition |
| Zdroj: | Measurement Science Review, Vol 18, Iss 2, Pp 79-85 (2018) |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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