Abstract
Magnetic Resonance Imaging (MRI) artifacts can occur due to hardware or software related problems, human physiologic phenomenon or physical restrictions. Careful study design and scanning protocols can prevent certain artifacts from occurring, but some are unavoidable. The study aimed at evaluating MRI artifact in some selected centers in Kano metropolis, Nigeria. A descriptive cross-sectional study was conducted involving both prospective and retrospective phases across three centres in the Kano metropolis from March 2019 to August 2019. Using the purposive sampling method, 3 centers were selected. A data capture sheet was designed for data collection. Thirty five (50%) of the artifacts encountered were from the centreA, 28(40%) from the centre B, and 7(10%) from the centre C. Motion-induced artifact was the most frequently encountered artifact 26(37.1%), followed by wrap-around artifact 15(21.4%), and then frequency-induced artifact 13(18.6%). Thoracic spine MRI had the highest number of artifacts 28(40%), followed by brain 20(28.6%), and then lumbar spine 19(27.1%). In Kano metropolis the most encountered MRI artifact was the motion-induced artifact and thoracic spine MRI had the highest number of artifacts. The artifacts had a negative effect on image quality.
Highlights
Like any other type of diagnostic imaging, Magnetic Resonance Imaging (MRI) is Magnetic resonance imaging is an imaging modality susceptible to artifacts and these artifacts appear for a that uses a strong magnetic field and advanced comput- variety of reasons
Thoracic spine MRI had the highest number of artifacts
The artifacts had a negative effect on image quality
Summary
Like any other type of diagnostic imaging, MRI is Magnetic resonance imaging is an imaging modality susceptible to artifacts and these artifacts appear for a that uses a strong magnetic field and advanced comput- variety of reasons. Potential sources of the artifacts iners to acquire images for the diagnosis of pathological clude non ideal hardware characteristics, intrinsic tissue conditions. It has two main advantages over other im- properties and biological behavior, assumptions underaging modalities; it is not associated with ionizing ra- lying the data acquisition and image reconstruction prodiation and provides excellent soft tissue contrast and cess, and poor choice of scanning parameters. There are different types of artifacts, depending the brain It is the modality of choice for on their origin and can be classified into the following diseases involving the central nervous system, tumor groups and each has its own causes, so different staging, musculoskeletal disorders and congenital heart strategies to minimize them. Careful study design and scanning protocols can prevent certain artifacts from occurring, but some are unavoidable.
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