44 Medical Imaging and Radiotherapy Journal (MIRTJ) 41 (Suppl. 1)
Medical Imaging and Radiotherapy Journal (MIRTJ) 41 (Suppl. 1)
THE ROLE OF IMAR ITERATIVE RECONSTRUCTION SOFTWARE IN 
THE REDUCTION OF METAL ARTIFACTS AND IMAGE QUALITY
Bojana Topić
Department of Clinical Radiology, UKC RS, Banja Luka, Republika Srpska
Korespondenca / Corresponding author: bojanatopic94@gmail.com 
Prejeto/Recived: 1. 2. 2024
Sprejeto/Accepted: 17. 4. 2024
ABSTRACT
Introduction: Computed tomography is an indispensable 
diagnostic radiological method that is used daily in clinical 
practice. The modern design of new devices used today has 
led to a partial reduction of artifacts in CT images. Artifacts 
in radiology refer to any diff erence between the CT count on 
the image and the actual radiation attenuation in the object. 
A signifi cant contribution to the scanning of structures with 
implants, artifi cial joints and pacemakers was made possible 
through the use of iMAR, the primary role of which is to obtain 
an image with a reduced level of metal artifacts in use with 
conventional reconstruction if the CT data is distorted by 
metal.
Methods: Used in this paper were data obtained from the 
analysis and review of available scientifi c and professional 
papers in the database, as well as data from the archives of the 
Institute of Clinical Radiology and images archived through 
the available PACS system. 
Results: Using the data, I will show and explain in this paper 
the impact of iterative iMAR reconstruction using a Siemens 
TwinBeam Dual Energy technology, which can be combined 
with the iMAR algorithm to reduce metal artifacts.
Conclusion: Based on the collected data, the subjective quality 
of the image was signifi cantly improved, and the artifacts 
caused by metal implants were signifi cantly reduced. The 
most important factors for avoiding image artifacts remain 
precise positioning and the proper preparation of the patient.
Keywords: CT, iMAR, metal artifacts.
LITERATURA / REFERENCES
Kidoh M et al. (2014).  Reduction of dental metallic artefacts 
in CT: Value of a newly developed algorithm for metal 
artefact reduction(O-MAR), Clin. Radiol. 69, e11–e16.  
https://doi.org/10.1016/j.crad.2013.08.008
Subhas N et al. (2014). Iterative metal artifact 
reduction:evaluation and optimization of technique.
Skeletal Radiol.43(12):1729-35.