Pengaruh Parameter Milliampere-Second (mAs) terhadap Kualitas Citra Dan Dosis Radiasi Pada Pemeriksaan CT scan Kepala Pediatrik

Irsal, Muhammad; Winarno, Guntur

doi:10.20527/flux.v17i1.7085

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…Increasing the current given when scanning can increase the number of photons produced and received by the detector to create an image CT [11]. This result also shows that a decrease in the value of the tube current (mAs) means that the radiation dose received on the object has decreased as well, but at the same time, the uniformity value of the image noise in the image has increased [12]. Tube current is also related to object detectability in an image CT [10].…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Effect of the X-Ray Tube Current on Uniformity Image Noise Values

Mberato

Ratini

Yuliara

et al. 2022

IPR

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This research aimed to evaluate the effects of the X-ray current tube on the uniformity value of CT image noise. This research used the CT images of Siemens head water phantom. The phantom was scanned with a Siemens Somatom Scope CT scanner for various current tubes (i.e., 180 mAs, 200 mAs, 220 mAs, 240 mAs, and 260 mAs) on tube voltage 110 kV, slice thickness 3 mm, and FOV 240 mm. The uniformity values in CT image noise were analyzed using the standard deviation value (SD). The SD was measured by the ROI process in 5 different locations, in the center and at 3 o'clock, 6 o'clock, 9 o'clock, and 12 o'clock on the images CT. Based on the result of a simple linear regression test using IBM SPSS ver 25, it was found that the current tube significantly affected the uniformity value of image noise (r2=0,9768, p<0,05). This result showed that increasing the current tube can reduce image noise uniformity. The highest image noise uniformity value was at a current at 180 mAs with 0,217 HU, and the lowest was at 260 mAs with 0,031 HU. This result also shows that all the values are less than 2 HU and still within the acceptable limit by the BAPETEN standard regulation.

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Section: Resultsmentioning

confidence: 99%

Analysis of the Effect of the X-Ray Tube Current on Uniformity Image Noise Values

Mberato

Ratini

Yuliara

et al. 2022

IPR

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“…Based on Table 1, it can be seen that filter B90s obtained the highest SNR value. The higher the SNR value, the clearer the radiographic image when there is a small difference between an organ and the surrounding area (Irsal & Winarno, 2020).…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2022

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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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“…Dengan demikian citra medik tersebut dapat dengan mudah dilakukan diagnosis. Namun apabila analisis yang dilakukan menunjukkan nilai CNR yang rendah, maka citra medik tidak dapat dilakukan diagnosis karena memiliki tingkat citra dengan kualitas yang rendah (Irsal & Winarno, 2020).…”

Section: Tabel 1 Hasil Perhitungan Nilai Cnr Untuk Variasi Faktor Eks...unclassified

Comparative Test of the Effect of X-Ray Tube Current Analysis and Exposure Time on CR (Computed Radiography) Image Quality

Ningtias¹

2022

JITE

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The medical image system in the form of digital examination results using Computed Radiography (CR) needs to be analyzed, this can be done by knowing the quality of the image contrast resolution and the quality of its spatial resolution. This study conducted a comparative test between two methods of analyzing contrast resolution of medical images. Image quality on Computed Radiography can be determined using contrast resolution analysis, namely calculating the CNR value and PSNR value. The study was carried out using a phantom to represent the density of the bone. The voltages used are 50 kV, 60 kV, 70 kV and 81 kV, respectively. With each voltage, the tube current and exposure time (mAs) were varied 1.6 mAs, 2 mAs, 4 mAs, 8 mAs, 16 mAs, and 32 mAs. The higher the CNR value obtained, the better the image quality. While the PSNR value to get the optimal quality of medical image contrast, the current-time variation of 4 mAs and 16 mAs must be used. Due to the time-current variation, a high PSNR value is obtained, which indicates that the noise of the medical image is getting smaller so that a good contrast quality of the medical image is obtained.

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Pengaruh Parameter Milliampere-Second (mAs) terhadap Kualitas Citra Dan Dosis Radiasi Pada Pemeriksaan CT scan Kepala Pediatrik

Cited by 6 publications

References 8 publications

Analysis of the Effect of the X-Ray Tube Current on Uniformity Image Noise Values

Analysis of the Effect of the X-Ray Tube Current on Uniformity Image Noise Values

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

Comparative Test of the Effect of X-Ray Tube Current Analysis and Exposure Time on CR (Computed Radiography) Image Quality

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