Analisis Nilai Ct-Number Pada Ct-Scan Thorax Dengan Kasus Covid-19

Abstract

Background : Computed Tomography (CT) scanner is an imaging tool used to obtain images of certain parts of the body using X-rays. CT-Scanner more detailed image, compared to X-ray, CT Number is the value of the X-ray attenuation coefficient (energy attenuation) determined by the average X-ray calculated in Hounsfield Units (HU) which is a standard facility that always is on the CT-Scan plane. Thorax CT-Scan is a radiological examination technique to obtain anatomical information of cross-sectional slices such as axial, coronal and sagittal. Coronavirus Disease 2019 (Covid-19 ) is an infectious disease caused by a species of coronavirus, namely severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). As a recent study, the CT-Scan abnormality that is most often observed in Covid-19 patients is ground glass opacity (GGO).
 Methods : This research uses descriptive quantitative with an observational approach. This measurement uses the Region Of Interest (ROI) to determine the value of the CT Number, where the Region Of Interest (ROI) is directed at the picture that contains a pathological abnormality of Grond Glass Opacity (GGO) on the CT-Scan Thorax in cases of Covid-19 then the CT Number value is compared with results of research conducted by Ali & Ghonymy, (2020).
 Result and Coclusion : Shows that there is a range of CT Number values ​​using quartile 3 or 75% percintile with the result of : -167 HU, Maximum : -74 minimum value : -288 HU. This means that it is a pathological Grond Glass Opacity (GGO) for Covid-19 patients.

Preparedness of tsunami 2004 affected school: a case study of senior high school in Aceh Province, Indonesia

“…Group-based approaches are also effective as they provide detailed knowledge and help prevent misunderstandings. Compared to mass education, the group method allows for a more comprehensive understanding of the mitigation process [29]. Students are more likely to retain knowledge in their long-term memory when actively engaged, relate their learning to personal experiences, and demonstrate their understanding [30].…”

Evaluation of Effective Doses of Radiation and Risk Factors in Thorax-Testing CT Scans of Patients with Lung Cancer Cases

“…IOP Publishing doi:10.1088/1742-6596/2780/1/012024 2 Computed Tomography (CT) scan is an X-ray imaging tool combined with a data processing computer, so that it is able to produce images in the form of images that display parts of the human body [4]. A CT scan thorax, on the other hand, is a CT scan examination procedure on the human chest cavity with the goal of identifying diseases or abnormalities there.…”