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All Journal Jurnal Imejing Diagnostik Jurnal Radiografer Indonesia
Dwi Rochmayanti
Poltekkes Kemenkes Semarang, Indonesia
Health Professions Medicine & Pharmacology

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Analisis Noise Pada Radiografi Thorax Pulmonum Pada Penerapan Modifikasi Faktor Eksposi Aturan 10 kV Luthfi Rusyadi; Siti Daryati; Dwi Rochmayanti; Andrey Nino Kurniawan
Jurnal Imejing Diagnostik (JImeD) Vol 7, No 2: JULY 2021
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jimed.v7i2.7473

Abstract

Introduction: Quality and dose factors are very important in radiodiagnostics. To produce a constant radiographic quality, the density and contrast produced must remain constant. There is a rule that aims to produce a constant radiographic quality by adding the exposure value, namely the 10 kV rule. This study was conducted to determine the noise in the computed radiography image with the thorax organ produced by modifying the exposure factor of the 10 kV rule and whether it is still within tolerance.Methods: This quantitative research was conducted with an experimental approach. This is done by taking a series of radiographs that include three exposure factor settings, standard (60 kV, 10 mAs), increased by 10 kV (70 kV, 5 mAs) and lowered by 10 kV (50 kV, 20 mAs). Noise measurement is done by doing ROI in the background area. The exposure index and deviation index values were also recorded as quality and dose references. The data was processed and analyzed by statistical tests.Results: From the statistical test results, there is a significant relationship between kV and noise with a sig (1-tailed) of ,000. Noise on the standard exposure factor has a lower noise than the modified exposure factor with a difference of 0.2. From the quality aspect, the most optimum exposure index and deviation index indicators are in the range of 70 KV and 5 mAs.Conclusion: The results of the statistical test of the relationship of kV to noise obtained at 50 Kv and 20 mAs, 60 kV and 10 mAs gave a significance value of 0.263 and 0.435, while at 70 kV and 10 mAs with Sig. (1-tailed) of .000 which means the relationship between kV to noise is strong because the sig value is below 0.05.
UJI KESESUAIAN PESAWAT PANORAMIC CHEPALOMETRIC DI LABORATORIUM JURUSAN TEKNIK RADIODIAGNOSTIK DAN RADIOTERAPI, POLTEKKES KEMENKES SEMARANG (UJI MENGGUNAKAN FILM GAFCHROMIC) Andrey Nino Kurniawan; Dwi Rochmayanti; Agustina Dwi Prastanti
JRI (Jurnal Radiografer Indonesia) Vol. 6 No. 1 (2023): Mei
Publisher : Perhimpunan Radiografer Indonesia (PARI)

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Abstract

ABSTRACT Background: X-ray equipment used for radiographic examination according to Bapeten regulations must undergo a compliance test, both for new installation and for relocating. The Panoramic Chepalometry in the Department of Radiodiagnostics and Radiotherapy Techniques Semarang is a new device and has undergone a relocation from the initial installation. In addition, the unique condition of the Panoramic Chepalometry is direct image processing or direct radiography, so a special method is needed for testing x-ray collimation beams, namely using gafchromic films Methods: The research is experimental with a one shot case study at the Laboratory of the Department of Radiodiagnostic and Radiotherapy Techniques, Poltekkes Kemenkes Semarang. The research object is a Panoramic cephalometry device. The measuring instrument used was Raysave, and the test parameters measured were: X-ray beam, voltage accuracy, time accuracy, linearity, reproducibility, HVL, and tube container leakage. The analysis of the test results is adjusted to Bapeten regulation no. 2 of 2018 Results: Parameter test results obtained: X-ray beam is still within normal limits, voltage accuracy measurement results obtained a maximum error of 2.73% (max. limit 6%), time accuracy obtained a maximum error of 7.8% (max. limit 10 %), linearity was not measured because the mA value was fixed, reproducibility was obtained CV at a voltage of 0.0012 and radiation output of 0.0006 (CV≤ 0.05), x-ray beam quality (HVL) was obtained at 3.72 mm Al at 80 kVp (HVL limit ≥ 2.3 mm Al), and no leakage in the tube housing Conclusions: The results of the panoramic cephalometric compliance test at the Laboratory of the Department of Radiodiagnostic and Radiotherapy Techniques, Poltekkes Kemenkes Semarang, on 7 test parameters as a whole are still within normal limits according to Perka Bapeten no.2 of 2018
Co-Authors Agustina Dwi Prastanti Andrey Nino Kurniawan Luthfi Rusyadi Siti Daryati