Alexandre T Assaf1, Tomislav A Zrnc2, Chressen C Remus3, Michael Schönfeld4, Christian R Habermann3, Björn Riecke2, Reinhard E Friedrich2, Jens Fiehler4, Max Heiland2, Jan Sedlacik4. 1. Department of Oral and Maxillofacial Surgery (Head: Prof. MD, DMD, PhD. Max Heiland), University Medical Center Hamburg Eppendorf, University of Hamburg, Martinistr. 52, 20246 Hamburg, Germany. Electronic address: Alex.assaf@web.de. 2. Department of Oral and Maxillofacial Surgery (Head: Prof. MD, DMD, PhD. Max Heiland), University Medical Center Hamburg Eppendorf, University of Hamburg, Martinistr. 52, 20246 Hamburg, Germany. 3. Department of Diagnostics and Interventional Radiology, University Medical Center Hamburg Eppendorf, University of Hamburg, Martinistr. 52, 20246 Hamburg, Germany. 4. Department of Diagnostics and Interventional Neuroradiology (Head: Prof. MD, PhD. Jens Fiehler), University Medical Center Hamburg Eppendorf, University of Hamburg, Martinistr. 52, 20246 Hamburg, Germany.
Abstract
OBJECTIVES: The purpose of this study was to evaluate four in-house optimized, non-contrast enhanced sequences for MRI-investigation of maxillo-mandibular and dental structures by use of 3 T. METHODS: 12 volunteers with different dental status were examined by using a 3 T MRI with a 20-channel standard head-and-neck coil. All images performed were evaluated by using 3D-techniques, with different slice-thicknesses, in 3D T1- and T2-weighted sequences, as well as by using new techniques of image depictions. In addition phantom measurements were performed to estimate the extent of image artefacts caused by retainers and metal implants. RESULTS: Mean age of the participants was 33 years (range, 25.5-62.75 years), and the sex ratio was 5 females to 7 males. We identified different techniques to improve osseous and dental structures, despite problems caused by dental implants, tooth crowns or braces. CONCLUSION: The sequences evaluated offered excellent visualization in 2D and 3D of osseous and dental structures. Anatomical, osseous and dental structures were described at their ROI, in relation to patients with dental and head and neck pathologies. The ability to detect and distinguish pathological processes as soon as possible in 3D with excellent image quality avoiding ionizing radiation remains a challenging domain.
OBJECTIVES: The purpose of this study was to evaluate four in-house optimized, non-contrast enhanced sequences for MRI-investigation of maxillo-mandibular and dental structures by use of 3 T. METHODS: 12 volunteers with different dental status were examined by using a 3 T MRI with a 20-channel standard head-and-neck coil. All images performed were evaluated by using 3D-techniques, with different slice-thicknesses, in 3D T1- and T2-weighted sequences, as well as by using new techniques of image depictions. In addition phantom measurements were performed to estimate the extent of image artefacts caused by retainers and metal implants. RESULTS: Mean age of the participants was 33 years (range, 25.5-62.75 years), and the sex ratio was 5 females to 7 males. We identified different techniques to improve osseous and dental structures, despite problems caused by dental implants, tooth crowns or braces. CONCLUSION: The sequences evaluated offered excellent visualization in 2D and 3D of osseous and dental structures. Anatomical, osseous and dental structures were described at their ROI, in relation to patients with dental and head and neck pathologies. The ability to detect and distinguish pathological processes as soon as possible in 3D with excellent image quality avoiding ionizing radiation remains a challenging domain.
Authors: Alexander Heil; Franz Sebastian Schwindling; Constanze Jelinek; Manuel Fischer; Marcel Prager; Eduardo Lazo Gonzalez; Martin Bendszus; Sabine Heiland; Tim Hilgenfeld Journal: Dentomaxillofac Radiol Date: 2017-11-03 Impact factor: 2.419
Authors: Jimoh O Agbaje; Elke Van de Casteele; Ahmed S Salem; Dickson Anumendem; Ivo Lambrichts; Constantinus Politis Journal: Clin Oral Investig Date: 2016-11-22 Impact factor: 3.573
Authors: Alexander Juerchott; Christian Freudlsperger; Dorothea Weber; Johann M E Jende; Muhammad Abdullah Saleem; Sebastian Zingler; Christopher J Lux; Martin Bendszus; Sabine Heiland; Tim Hilgenfeld Journal: Eur Radiol Date: 2019-12-04 Impact factor: 5.315
Authors: Silwan Mendes; Carin A Rinne; Julia C Schmidt; Dorothea Dagassan-Berndt; Clemens Walter Journal: Clin Oral Investig Date: 2019-12-10 Impact factor: 3.573
Authors: J Gradl; M Höreth; T Pfefferle; M Prager; T Hilgenfeld; D Gareis; P Bäumer; S Heiland; M Bendszus; S Hähnel Journal: Clin Neuroradiol Date: 2016-02-11 Impact factor: 3.649