THE EFFECT OF SLICE THICKNESS VARIATION ON SIGNAL TO NOISE RATIO (SNR) IN CT-SCAN THORAX EXAMINATION WITH CLINICAL TUMORS IN THE RADIOLOGY INSTALLATION

Nerifa Dewilza, Sagita Yudha, Wahdini Hanifah, Livia Ade Nansih, Suma Kagus Purma Sari

Abstract


Slice thickness is the thickness of the slice on the image that is determined during reconstruction using Multiplanar Reconstruction (MPR). Choosing the right slice thickness according to the purpose of the examination will produce accurate diagnostic information. One of the parameters that determines the quality of the results of an image is the Signal to Noise Ratio (SNR). Signal to Noise Ratio (SNR) is the comparison between the amplitude of a signal and the amplitude of noise. Tumors are one type of pathology in the thorax caused by cells that divide and grow uncontrollably. The purpose of this study was to determine the effect of slice thickness variations on the Signal to Noise Ratio (SNR) on CT-Scan thorax at the Radiology Installation of Andalas University Hospital Padang and the highest SNR value. This study is a type of quantitative research with experimental methods, data analysis and testing. The slice thickness variations used in this study were 2 mm, 3 mm and 4 mm. The sample of this study was 3 patients. Each sample was performed ROI on tumor tissue, tumor border, healthy tissue and background. This study was conducted at the Radiology Installation of Andalas University Hospital, Padang from April to June 2024. The results showed that in this study (ρ Value <0.05) which means Ho is rejected and Ha is accepted, there is a significant effect because there is an effect of slice thickness variations on SNR. And the highest SNR value is shown in sample 3 slice thickness 4 which produces an SNR value of 24.929.

Keywords


CT-Scan thorax; Slice thickness; Signal to Noise Ratio (SNR); Tumor

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DOI: https://doi.org/10.33666/jitk.v16i1.671

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 Published by : Widya Husada Semarang University | ISSN : 2086-8510 (Print) | ISSN : 2655-5875 (Online)
  

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