Potential of low dose Cone Beam Computed Tomography and Multislice Computed Tomography for zygomaticomaxillary fracture diagnosis : A blinded and randomized approach

Rozema, R. (Romke) (2016) Potential of low dose Cone Beam Computed Tomography and Multislice Computed Tomography for zygomaticomaxillary fracture diagnosis : A blinded and randomized approach. thesis, Medicine.

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Abstract

PURPOSE: To assess the diagnostic value of low dose Cone Beam Computed Tomography (CBCT) and Multislice Computed Tomography (MSCT) for zygomaticomaxillary fracture diagnosis. MATERIAL AND METHODS: Unilateral zygomaticomaxillary fractures were inflicted on four out of six fresh frozen human cadaver head specimen. All specimen were scanned using two CBCT and four MSCT protocols where the radiation exposure was systematically reduced. A blinded diagnostic routine was recreated where 16 radiologists and 8 oral and maxillofacial surgeons performed 144 randomized image assessments. As a gold standard, the presence of fractures of the zygomatic region was verified by an open operative approach. RESULTS: Zygomaticomaxillary fractures were correctly diagnosed in 90.3% (n=130) of the image assessments. The zygomatic arch was most often correctly diagnosed (91.0%). The zygomatic alveolar crest showed the lowest degree of correct diagnosis (65.3%). No significant decrease of correctly diagnosed fracture sites was found between the baseline and low dose CBCT and MSCT protocols. Dose reduction did not significant decrease the ability to assess dislocation, comminution, orbital volume, volume rendering and soft tissues. OMF surgeons considered the low dose protocols sufficient for treatment planning. The effective dose of MSCT (129.9 to 51.0 μSv) remained well in range of CBCT (122 to 28 μSv). CONCLUSION: Dose reduction seems not to decrease the diagnostic value of CBCT and MSCT protocols for the diagnosis of zygomaticomaxillary fractures.

Item Type:	Thesis (Thesis)
Supervisor name:	Supervisor - and Minnen, B (Baucke) van MD PhD - Consultant Oral and Maxillof and Department of Oral and Maxillofacial Surgery, University Med
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 10:57
Last Modified:	25 Jun 2020 10:57
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/1769

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