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KMID : 1151820190130071035
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Journal of the Korean Society of Radiology
2019 Volume.13 No. 7 p.1035 ~ p.1043
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A Study of the Quantitative, Qualitative Analysis on Optimizing Diagnostic Imaging Device Selection in Nasopharynx MRI
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Goo Eun-Hoe
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Abstract
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The object of is this research is to find out the optimal Tesla by evaluating SNR and CNR , after testing 1.5 T and 3.0 T. The randomly selected patients tested by nasopharynx MRI transmitted in PACS were applied to the research. Two MRI units(1.5 T, 3.0 T) was used for analyzing the data. As a method of analysis, in T1W highlighting and T1 fat removal images, we set up a certain area of interest and evaluated the SNR and CNR on tongue, spinal cord, masseter muscle, fat, parotid gland, and tumor tissue. We evaluated the SNR and CNR by quantitative analysis of six tissue, measuring the quality of images for uniform fat removal, magnetic sensitivity artifact on a four-point scale by qualitative analysis. The statistical significance of this date analysis was based on independent sample verification and was accepted when the P value was less than 0.05. As a result of analysis of both devices, 3.0 T was high in the quantitative evaluation, while 1.5 T was high in the qualitative evaluation. Considering the advantages and disadvantages of each device, and if the device is selected complementarily and applied to patients, it is believed that it will provide the optimal information.
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KEYWORD
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Fat Suppression, Contrast to Noise Ratio, Signal to Noise Ratio, Magnetic Susceptibility Artifact
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