Grandoch, Andrea, Nestmann, Florian, Kreppel, Matthias, Buller, Johannes, Borggrefe, Jan ORCID: 0000-0003-2908-7560, Zirk, Matthias and Zoeller, Joachim E. (2019). Comparison of MRI with dedicated head and neck signal amplification coil and cone beam computed tomography: MRI is a useful tool in diagnostics of cranio-facial growth disorders. J. Cranio-MaxilloFac. Surg., 47 (11). S. 1827 - 1834. EDINBURGH: CHURCHILL LIVINGSTONE. ISSN 1878-4119

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Objective: Magnetic resonance imaging (MRI) shows excellent image quality for the depiction of soft tissues and is therefore an important imaging technique in medical diagnostics. However, the practical simultaneous presentation of hard and soft tissue structures of the mouth, jaw and facial area is not fully satisfactory at this time. We investigated the image quality of 1.5 T MRI using a dedicated signal amplifying coil for the application in the oral and maxillofacial field of and compared it with cone beam computed tomography (CBCT). We hypothesized that imaging quality for growth disorders of the facial skull does not differ significantly between the two imaging techniques. Materials and methods: 12 patients were consecutively enrolled into this study between 01/2016 and 12/ 2017. Patients received diagnostic imaging for clinical indications using 1,5 T MRI using a dedicated head and neck coil for signal amplification as well as an CBCT. For each patient 5 different MRI sequences and one CBCT protocol were assessed. Images were evaluated by a radiologist and a dentist in consensus. On the basis of 51 anatomical structures and orthodontic, cephalometric reference points, the five datasets were subjectively rated and compared to the CBCT dataset. Results: Patient age was in the range of 19-78 years. 2614 (69.8%) out of 3744 possible valuations were assessable. Compared to CBCT, MRI images were rated to have a superior image quality of presentation for 42 out of 51 anatomic structures (p < 0.05). Notably, 5 out of 51 structures were not assessable due to missing values. TI-weighted MRI images were rated superiorly to T2-weighted images in displaying anatomically relevant landmarks in the oral and maxillofacial field. MRI datasets were inferior in imaging cephalometric and orthodontic reference points in comparison to CBCT images. Conclusion: In conclusion, this pilot study demonstrates that radiation-free dental MRI enables a reliable detection of important anatomical structures. Thus, the signal amplified MRI presents a radiation-free imaging alternative to established CBCT in craniofacial growth disorders protocols. However, imaging quality in MRI datasets remains inferior to CBCT images for cephalometric and orthodontic reference points. (C) 2019 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.

Item Type: Journal Article
CreatorsEmailORCIDORCID Put Code
URN: urn:nbn:de:hbz:38-129132
DOI: 10.1016/j.jcms.2019.07.023
Journal or Publication Title: J. Cranio-MaxilloFac. Surg.
Volume: 47
Number: 11
Page Range: S. 1827 - 1834
Date: 2019
Place of Publication: EDINBURGH
ISSN: 1878-4119
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
PROTOCOLSMultiple languages
Dentistry, Oral Surgery & Medicine; SurgeryMultiple languages
Refereed: Yes


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