Clinical evaluation of the iterative metal artefact reduction algorithm for post-operative CT examination after maxillofacial surgery.

Hakim, Arsany; Slotboom, Johannes; Lieger, Olivier; Schlittler, Fabian; Giger, Roland; Michel, Chantal; Wiest, Roland; Wagner, Franca (2017). Clinical evaluation of the iterative metal artefact reduction algorithm for post-operative CT examination after maxillofacial surgery. Dento maxillo facial radiology, 46(4), p. 20160355. British Institute of Radiology 10.1259/dmfr.20160355

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OBJECTIVES Metal artefacts present challenges to both radiologists and clinicians during post-operative imaging. Such artefacts reduce the diagnostic effectiveness of computed tomography (CT) scans and mask findings that could be vital for patient management. Thus, a powerful artefact reduction tool is necessary when imaging patients with metal implants. Our aim was to test the recently introduced iterative metal artefact reduction (iMAR) algorithm in patients with maxillofacial implants. METHODS Images from 17 patients with diverse maxillofacial metal implants who had undergone CT scans were qualitatively and quantitatively analysed before and after metal artefact reduction with iMAR. RESULTS After iMAR application, images exhibited decreased artefacts and improved image quality, leading to detection of lesions that were previously masked by artefacts. The application of iMAR did not affect image quality in regions distant from the metal implants. CONCLUSION The application of iMAR to CT exams of patients with maxillofacial metal implants leads to artefact reduction, improvement of image quality and increased diagnostic utility. Routine implementation of iMAR during imaging of patients with metal hardware implants could add diagnostic value to their CT examinations.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ear, Nose and Throat Disorders (ENT)
04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Craniomaxillofacial Surgery
04 Faculty of Medicine > Other Institutions > Teaching Staff, Faculty of Medicine
04 Faculty of Medicine > University Psychiatric Services > University Hospital of Child and Adolescent Psychiatry and Psychotherapy
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic and Interventional Neuroradiology

UniBE Contributor:

Hakim, Arsany; Slotboom, Johannes; Lieger, Olivier; Schlittler, Fabian; Giger, Roland; Michel, Chantal; Wiest, Roland and Wagner, Franca

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0250-832X

Publisher:

British Institute of Radiology

Language:

English

Submitter:

Martin Zbinden

Date Deposited:

08 Aug 2017 07:53

Last Modified:

08 Feb 2018 11:10

Publisher DOI:

10.1259/dmfr.20160355

PubMed ID:

28112538

BORIS DOI:

10.7892/boris.94538

URI:

https://boris.unibe.ch/id/eprint/94538

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