Publikasi Dosen

Quality of Thorax CT Scan Images among Covid-19 Cases using Variations of Filter

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A typical image of the Thorax CT Scan as a sign of the early stages and development of Covid-
19 is the finding of Ground Glass Opacities (GGO). GGO is an insignificant increase in the
density of the lungs without occlusion of blood vessels and bronchi. In mild cases, GGO tends to
be difficult to identify and requires high-resolution CT scanning. In this study, we intend to
improve the resolution of the Thorax CT Scan image through filter settings, to analyze the
difference in the variations of filters B50s, B70s, and B90s towards the quality of the CT Scan
image and obtain the optimal use of filter in the Thorax CT Scan examination among Covid-19
cases. This was a quantitative analytical study conducted at one of the Regional General Hospital
in Jakarta on March-April 2022. The samples were secondary data derived from 10 patients by
using MSCT Siemens Somatom Perspective 128 slices. Data were collected through observation
and experiment. The images collected were further analyzed using Image j software to find values
of Signal to Noise Ratio (SNR) and Contrast to Noise Ratio (CNR). Furthermore, the values were
compared by assessing the anatomical image information through various filters. The results of
this study indicated that there were differences in the SNR and CNR values of the three filters.
The higher resolution of the filter used, the more capable it was to sharper and more detailed the
image but the noise level was also higher. Thorax CT Scan examination should be carried out
using the B70s very sharp filter that was able to produce images with the optimal information and
fairly low noise level. A very thin GGO image in the early stage of the manifestation of Covid-
19 could be identified in the Thorax CT Scan examinations for diagnosis of Covid-19 case

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

001.43

Penerbit

: ., 2022

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

001.43

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

signal to noise ratio
Thorax CT-Scan
Covid-19
Filter
contrast to noise ratio

Info Detail Spesifik

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Pernyataan Tanggungjawab

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Versi lain/terkait

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