Efektivitas Software Organ Dose Modulation (ODM) dalam Penurunan Dosis Radiasi pada CT Thorax
DOI:
https://doi.org/10.31983/jimed.v12i1.14448Keywords:
Chest CT, Organ Dose Modulation, Dosage, Image QualityAbstract
Background: CT Scanning is a diagnostic examination modality that uses radiation to obtain detailed cross-sectional images of the human body. CT thorax is a frequently performed examination to evaluate lung parenchyma, airways, and mediastinal structures. This increases collective radiation exposure, thereby increasing long-term biological effects, especially on radiosensitive organs in the thorax, such as the mammary glands, thyroid, lungs, and spinal cord. One strategy to optimize dose exposure to radiosensitive organs is to use Organ Dose Modulation (ODM) software. ODM is a CT feature that can reduce radiation exposure to radiosensitive organs. This study aims to evaluate the effectiveness of ODM in reducing radiation dose in CT thorax examinations and its impact on image quality.
Methods: This experimental study using a quantitative approach was conducted by Scanning a torso phantom from August to October 2025 at Indriati Solo Baru General Hospital. Thoracic Scanning was performed with two conditions: ODM OFF and ODM ON. Radiation exposure measurements in radiosensitive areas were performed by placing TLDs over the thyroid, mammary glands, lungs, and vertebrae (spinal cord), with each measurement repeated twice. Image quality was then assessed using SNR and CNR measurements with three repeated measurements. The resulting data were analyzed descriptively and analytically to compare dose distribution and image quality when the ODM was turned off and on.
Results: TLD measurements demonstrated dose redistribution when the ODM was activated. Comparison of the average dose showed a decrease in anterior radiosensitive organs, with a 2.59% decrease in the thyroid and a 16.71% decrease in the mammary glands. Conversely, there was an increase in dose in the posterior and lateral regions, with a 45.05% increase in the vertebrae and a 5.05% increase in the lungs. Image quality analysis revealed a 14.76% increase in SNR and a 28.30% increase in CNR when the ODM was activated.
Conclusions: This study demonstrates that the ODM not only reduces radiation dose to anterior radiosensitive organs but also improves image quality.
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Akşamoğlu, M., & Menzilcioğlu, M. S. (2023). Evaluation of the Image Quality of Ultra-Low-Dose Paranasal Sinus Computed Tomography Scans. https://doi.org/10.58600/eurjther.20232902-1131.y
Angel, E., Yaghmai, N., Jude, C. M., DeMarco, J. J., Cagnon, C. H., Goldin, J. G., … McNitt-Gray, M. F. (2009). Dose to radiosensitive organs during routine chest CT: Effects of tube current modulation. American Journal of Roentgenology, 193(5), 1340–1345. https://doi.org/10.2214/AJR.09.2886/ASSET/IMAGES/11_09_2886_04.JPEG
Artitin, C., Harahap, W. A., & Ellyanti, A. (2018). Pengukuran Dosis Radiasi Pada Organ Thyroid dan Mata Saat Pemeriksaan Fluroskopi. In Jurnal Kesehatan Andalas (Vol. 7). https://doi.org/https://doi.org/10.25077/jka.v7i0.943
Dixon, M. T., Loader, R. J., Stevens, G. C., & Rowles, N. P. (2016). An evaluation of organ dose modulation on a GE optima CT660-computed tomography Scanner. Journal of Applied Clinical Medical Physics, 17(3), 380–391. https://doi.org/10.1120/jacmp.v17i3.5724
Fatmayanti, H., Rochmayanti, D., Handayani, A. I., Kurniawan, A. N., & Kartikasari, Y. (2024). Profil Dosis Sekunder Ct Scan Sinus Paranasal Dengan Aplikasi Software Organ Dose Modulation (ODM). JRI (Jurnal Radiografer Indonesia), 7(1), 52–57. https://doi.org/10.55451/JRI.V7I1.284
Franck, C., Smeets, P., Lapeire, L., Achten, E., & Bacher, K. (2018). Estimating the patient-specific dose to the thyroid and breasts and overall risk in chest CT when using organ-based tube current modulation. Radiology, 288(1), 164–169. https://doi.org/10.1148/radiol.2018170757
Fu, W., Sturgeon, G. M., Agasthya, G., Segars, W. P., Kapadia, A. J., & Samei, E. (2017a). Breast dose reduction with organ-based, wide-angle tube current modulated CT. Journal of Medical Imaging, 4(3), 031208. https://doi.org/10.1117/1.JMI.4.3.031208
Gandhi, D. (2014). The Effects of Organ-based Tube Current Modulation on Radiation The Effects of Organ-based Tube Current Modulation on Radiation Dose and Image Quality in Computed Tomography Imaging Dose and Image Quality in Computed Tomography Imaging. Milwaukee, Wisconsin. Retrieved from https://epublications.marquette.edu/theses_open/277
Giansante, L., Martins, J. C., Nersissian, D. Y., Kiers, K. C., Kay, F. U., Sawamura, M. V. Y., … Costa, P. R. (2019). Organ doses evaluation for chest computed tomography procedures with TL dosimeters: Comparison with Monte Carlo simulations. J Appl Clin Med Phys, 20(1), 308–320. https://doi.org/10.1002/acm2.12505
Goldman, L. W. (2008, June). Principles of CT: Multislice CT. Journal of Nuclear Medicine Technology, Vol. 36, pp. 57–68. https://doi.org/10.2967/jnmt.107.044826
Hosseinzadeh, V., Ghaffari, H., Rezaeyan, A., & Deilami, S. (2021). Estimating organ dose in computed tomography using tube current modulation: A Monte Carlo simulation. International Journal of Radiation Research, 19(3), 575–581. https://doi.org/10.52547/IJRR.19.3.575
IAEA Safety Standards for protecting people and the environment. (n.d.). Retrieved from http://ec.europa.eu/dgs/communication/services/visual_identity/index_en.htm
Inoue, Y., Itoh, H., Koizumi, K., Sekimoto, S., Hata, H., Miyatake, H., … Mitsui, K. (2024). Effects of organ dose modulation applied to a part of the Scan range on radiation dose in computed tomography of the body. Journal of Radiological Protection : Official Journal of the Society for Radiological Protection, 44(3). https://doi.org/10.1088/1361-6498/AD6D76
Irma Handayani, A., Rochmayanti, D., Dwi Handoko, B., Kemenkes Semarang, P., & Corresponding Author, I. (2023). Reduksi Dosis Serap Mata dengan Implementasi Software Organ Dose Modulation (ODM) pada Protokol CT Scan Sinus Paranasal. Jurnal Imejing Diagnostik (JImeD), 9(2), 96–102. Retrieved from https://ejournal.poltekkes-smg.ac.id/ojs/index.php/jimed/article/view/10408
John P.L dan Leslie E.K. (2018). Bontrager’s Textbook Of Radiographic Positioning And Related Anatomy.
Lahham, A., Almasri, H., & Kameel, S. (2018). Estimation Of Female Radiation Doses And Breast Cancer Risk From Chest Ct Examinations. Radiation Protection Dosimetry, 179(4), 303–309. https://doi.org/10.1093/RPD/NCX283
Larasati, N., Sari, K., Tiko Bahagia, D., Hartoyo, P., & Muliyati, D. (2021). The Effects Of High Dose And Low Dose Protocols In Thorax’s Ct Scan Image Quality. Indonesian Journal of Applied Physics, 11(2).
Layman, R. R., Hardy, A. J., Kim, H. J., Chou, E. N., Bostani, M., Cagnon, C., … McNitt-Gray, M. (2021). A comparison of breast and lung doses from chest CT Scans using organ-based tube current modulation (OBTCM) vs. Automatic tube current modulation (ATCM). Journal of Applied Clinical Medical Physics, 22(5), 97–109. https://doi.org/10.1002/acm2.13198
Munthe, F. K. (2016). Akurasi Diagnostik Transthoracic Needle Aspiration dengan Tuntunan CT Scan Torak dalam Menegakkan Diagnosis Kanker Paru di RSUP H. Adam Malik Medan. Retrieved from https://repositori.usu.ac.id/handle/123456789/50875
Mussmann, B. R., Mørup, S. D., Skov, P. M., Foley, S., Brenøe, A. S., Eldahl, F., … Precht, H. (2021). Organ-based tube current modulation in chest CT. A comparison of three vendors. Radiography, 27(1), 1–7. https://doi.org/10.1016/j.radi.2020.04.011
Nesseth, R. (2000). Procedure and Documentation for CT and MRI.
Rasya Ziyan. (2021). Analysis The Effect Of Software Organ Dose Modulation (Odm) On The Image Quality Ct-Scan Thorax Low Dose In Covid 19 Case. Poltekkes Kemenkes Jakarta 2, Jakarta.
Rukmana, D. A., Kamantuh, V. S., Dwinanto, B., & Saputri, L. D. (2021). Analisis Reduksi Dosis Efektif Mata Pada Fantom Menggunakan TLD Mata dengan Implementasi Software Organ Dose Modulation (ODM) dan Eyeshield pada Protokol CT Kepala dengan Alat GE Revolution Evo 128 Slice. Jurnal Pengawasan Tenaga Nuklir, 1(1), 26–30. https://doi.org/10.53862/jupeten.v1i1.006
Rukmana, D., & Veronika. (2021). Analisis Reduksi Dosis Efektif Mata Pada Fantom Menggunakan TLD Mata dengan Implementasi Software Organ Dose Modulation (ODM) dan Eyeshield pada Protokol CT Kepala dengan Alat GE Revolution Evo 128 Slice. Jurnal Pengawasan Tenaga Nuklir, 1(1).
Schimmöller, L., Lanzman, R. S., Dietrich, S., Boos, J., Heusch, P., Miese, F., … Kröpil, P. (2014). Evaluation of automated attenuation-based tube potential selection in combination with organ-specific dose reduction for contrast-enhanced chest CT examinations. Clinical Radiology, 69(7), 721–726. https://doi.org/10.1016/j.crad.2014.02.008
Sookpeng, S., Martin, C. J., & Butdee, C. (2019). The investigation of dose and image quality of chest computed tomography using different combinations of noise index and adaptive statistic iterative reconstruction level. Indian Journal of Radiology and Imaging, 29(1), 53–60. https://doi.org/10.4103/IJRI.IJRI_124_18/ID/JR_29/BIB
Speed, U. (n.d.). Sectional Anatomy by CT and MRI.
Strecker, S., Kuckertz, A., & Pawlowski, J. M. (2020). Principles of Anatomy and Physiology, 16th Edition. ICB Research Reports, (9). Retrieved from https://openlibrary.telkomuniversity.ac.id/home/catalog/id/174870/slug/principles-of-anatomy-and-physiology-16th-edition.html
Suryamin, R. (Ricky). (2021). Modalitas CT-Scan Toraks sebagai Pemeriksaan Penunjang pada COVID-19. Cermin Dunia Kedokteran, 48(1), 398749. https://doi.org/10.55175/CDK.V48I1.1269
Yang, Y., Zhuo, W., Zhao, Y., Xie, T., Wang, C., & Liu, H. (2021). Estimating Specific Patient Organ Dose for Chest CT Examinations with Monte Carlo Method. Applied Sciences 2021, Vol. 11, Page 8961, 11(19), 8961. https://doi.org/10.3390/APP11198961
Zhao, Y., Geng, X., Li, D., Zhang, T., & Xu, Y. (2021). Application of full-field organ dose modulation on cervical- thoraco-abdominopelvic contrast-enhanced computed tomography. Japanese Journal of Radiology, 39(3), 254–260. https://doi.org/10.1007/s11604-020-01056-7
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