ANALYSIS OF THE EFFECT OF THE X-RAY TUBE CURRENT ON UNIFORMITY IMAGE NOISE VALUES
DOI:
10.29303/ipr.v6i1.183Downloads
Abstract
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.
Keywords:
Uniformity Image Noise; CT number; CT Scan; Water phantomReferences
Hutami, I. A. P. A., Sutapa, G. N., & Paramarta, I. B. A. (2021). Analisis Analisis Pengaruh Slice Thickness Terhadap Kualitas Citra Pesawat CT Scan Di RSUD Bali Mandara. BULETIN FISIKA, 22(2), 77-83.
Khairunnisak, K., Milvita, D., & Sandy, K. Y. P. (2017). Uji Kesesuaian Pesawat CT–Scan 64 Slice Merek Philips di Instalasi Radiologi Rumah Sakit Universitas Andalas Padang Menggunakan Detektor Unfors Raysafe X2. Jurnal Fisika Unand, 6(4), 355-361. doi: https://doi.org/10.25077/jfu.6.4.355-361.2017
Almuslimiati, A., Milvita, D., & Prasetio, H. (2019). Analisis Nilai Noise dari Citra Pesawat CT-Scan pada Beberapa Rekonstruksi Kernel dengan Variasi Slice Thickness. Jurnal Fisika Unand, 8(1), 57-63. doi: https://doi.org/10.25077/jfu.8.1.57-63.2019
Contillo,A.,Veronese,A.,Brombal,L.,Donato,S.,Rigon,L.,Taibi,A.,Tromba,G.,Longo,R. & Arfelli, F. (2018). A proposal for a quality control protocol in breast CT with synchrotron radiation. Radiology and Oncology,52(3) 329-336. doi: https://doi.org/10.2478/raon-2018-0015
Dewi, P. S., Ratini, N. N., & Trisnawati, N. L. P.(2022). Effect of x-ray tube voltage variation to value of contrast to noise ratio (CNR) on computed tomography (CT) Scan at RSUD Bali Mandara. International Journal of Physical Sciences Engineering, 6(2), 82–90. https://doi.org/10.53730/ijpse.v6n2.9656
S., A. A., Setiabudi, W., & Anam, C. (2015). Pengaruh Perubahan Tegangan Tabung (kVp) Terhadap CT Number dan Uniformitasnya pada Pesawat CT Scan. JURNAL SAINS DAN MATEMATIKA, 20(3), 77-80.
Mas' uul, A. R. I., & Sutanto, H. (2014). Uji Kesesuaian Ct Number Pada Pesawat Ct-Scan Multi Slice Di Unit Radiologi Rumah Sakit Islam YOGYAKARTA Pdhi. Youngster Physics Journal, 3(4), 335-340.
Alshipli, M., & Kabir, N. A. (2017, May). Effect of slice thickness on image noise and diagnostic content of single-source-dual energy computed tomography. In Journal of Physics: Conference Series (Vol. 851, No. 1, p. 012005). IOP Publishing.
Kalra, M. K., Maher, M. M., Toth, T. L., Hamberg, L. M., Blake, M. A., Shepard, J. A., & Saini, S. (2004). Strategies for CT radiation dose optimization. Radiology, 230(3), 619-628. doi: https://doi.org/10.1148/radiol.23030217266
Riyanto, S., Budi, W. S., & Anam, C. (2019). Pengaruh arus tabung terhadap noise dan kontras citra pada pesawat CT Scan. Berkala Fisika, 22(3), 105-109.
Prastanti, A. D., Cholid, B., & Jeffri, A. Optimalisasi Kejelasan Anatomi dan Dosis Radiasi Pada CT Scan Tulang Wajah (Maxillofacial) Dengan Variasi Kuat Arus Tabung. DEWAN REDAKSI, 10.
Irsal, M., & Winarno, G. (2020). Pengaruh Parameter Milliampere-Second (mAs) terhadap Kualitas Citra Dan Dosis Radiasi Pada Pemeriksaan CT scan Kepala Pediatrik. Jurnal Fisika Flux: Jurnal Ilmiah Fisika FMIPA Universitas Lambung Mangkurat, 17(1), 1-8.
Zhou, Y., Scott, A., Allahverdian, J., Lee, C., Kightlinger, B., Azizyan, A., & Miller, J. (2015). On the relationship of minimum detectable contrast to dose and lesion size in abdominal CT. Physics in Medicine & Biology, 60(19), 7671. doi: https://doi.org/10.1088/0031-9155/60/19/7671
License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors who publish with Indonesian Physical Review Journal, agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution-ShareAlike 4.0 International Licence (CC BY SA-4.0). This license allows authors to use all articles, data sets, graphics, and appendices in data mining applications, search engines, web sites, blogs, and other platforms by providing an appropriate reference. The journal allows the author(s) to hold the copyright without restrictions and will retain publishing rights without restrictions.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in Indonesian Physical Review Journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).