Browse > Article
http://dx.doi.org/10.7742/jksr.2019.13.7.933

Measurement of Radiation Dose of HR CT and Low Dose CT by using Anthropomorphic Chest Phantom and Glass Dosimetry  

Kweon, Dae Cheol (Department of Radiological Science, College of Bioecological Health, Shinhan University)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.7, 2019 , pp. 933-939 More about this Journal
Abstract
The purpose of this study is to provide basic clinical data by evaluating images, measuring absorbed dose and effective dose by using high resolution CT and low dose CT by using anthropomorphic chest phantom and glass dosimeter. Tissue dose was measured by inserting a glass dosimeter into the anthropomorphic chest phantom. A 64-slice CT system (SOMATOM Sensation 64, Siemens AG, Forchheim, Germany) and CARE Dose 4D were used, and the parameters of the high resolution CT were 120 kVp, Eff. Scan parameters of mAs 104, scan time 7.93 s, slice 1.0 mm (Acq. 64 × 0.6 mm), convolution kernel (B60f sharp) were used, and low dose CT was 120 kVp, Eff. mAs 15, scan time 7.41 s, slice 3.0 mm (Acq. 64 × 0.6 mm), scan of convolution kernel B50f medium sharp. CTDIvol was measured at 8.01 mGy for high resolution CT and 1.18 mGy for low dose CT. Low dose CT scans showed 85.49% less absorbed dose than high resolution CT scans.
Keywords
Absorbed dose; Anthropomorphic phantom; Computed tomography; Effective dose; Glass dosimetry;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 M. K. Kalra, M. M. Maher, S. Rizzo, D. Kanarek, J. A. Shepard, "Radiation exposure from chest CT: issues and strategies," Journal of Korean Medical Science, Vol. 19, No. 2, pp. 159-166, 2004.   DOI
2 M. M. Maher, M. K. Kalra, T. L. Toth, C. Wittram, S. Saini, J. Shepard, "Application of rational practice and technical advances for optimizing radiation dose for chest CT," Journal of Thoracic Imaging, Vol. 19, No. 1, pp. 16-23, 2004.   DOI
3 F. A. Jr. Mettler, M. Bhargavan M, K. Faulkner, et al., "Radiologic and nuclear medicine studies in the United States and worldwide: frequency, radiation dose, and comparison with other radiation sources-1950-2007," Radiology, Vol. 253, No. 2, pp. 520-531. 2009.   DOI
4 D. A. Schauer, O. W. Linton, "National Council on Radiation Protection and Measurements report shows substantial medical exposure increase," Radiology, Vol. 253, No. 2, pp. 293-296, 2009.   DOI
5 R. Cristiano, O. Daniela, B. Massimo, "Low-dose CT: technique, reading methods and image interpretation Cancer Imaging," Cancer Imaging, Vol. 12, No. 3, pp. 548-556, 2012.   DOI
6 T. S. Park, J. H. Han, S. Y. Jo, E. L. Lee, K. W. Jo, D. C. Kweon, "Comparison of noise and doses of low dose and high resolution chest CT for automatic tube current modulation and fixed tube current technique using glass dosimetry," Journal Radiation Industry, Vol. 11, No. 3, pp. 131-137, 2017.
7 H. J. Lim, M. J. Chung, K. S. Shin, H. S. Hwang, K. S. Lee, "The impact of iterative reconstruction in low-dose computed tomography on the evaluation of diffuse interstitial lung disease," Korean Journal of Radiology, Vol. 17, No. 6, pp. 950-960, 2016.   DOI
8 M. Y. Jung, D. C. Kweon, S. I. Kwon, "Effectiveness of bismuth shield to reduce eye lens radiation dose using the photoluminescence dosimetry in computed tomography," Journal of Radiological Science and Technology, Vol. 32, No. 3, pp. 307-312, 2009.
9 B. G. Yoo, D. C. Kweon, J. S. Lee, K. J. Jang, S. H. Yang, Y. S. Kim, "Comparison radiation dose os z-axis automatic tube current modulation technique with fixed tube current multi-detector row CT scanning of lower extremity venography," Journal of Radiation Protection and Research, Vol. 32, No. 3, pp. 123-133, 2007.
10 J. S. Lee, D. C. Kweon, B. G. You, "Radiation dose reducing effect during the AEC system in the chest and abdomen of the MDCT scanning," The Journal of the Korea Contents Association, Vol. 9, No. 3, pp. 225-231, 2009.   DOI
11 Md. Bastos, E. Y. Lee, K. J. Strauss, D. Zurakowski, D. A. Tracy, P. M. Boiselle, "Motion artifact on high-resolution CT images of pediatric patients: comparison of volumetric and axial CT methods," American Journal of Roentgenology, Vol. 193, No. 5, pp. 1414-1418, 2009.   DOI
12 AAPM, The measurement, reporting, and management of radiation dose in CT. Alexandria, VA: AAPM; 2008.
13 U. J. Schoepf, R. D. Bruening, C. Hong, R. Eibel, S. Aydemir, A. Crispin, C. Becker, M. F. Reiser, "Multislice helical CT of focal and diffuse lung disease: comprehensive diagnosis with reconstruction of contiguous and high-resolution CT sections from a single thin-collimation scan," American Journal of Roentgenology, Vol. 177, No. 1, pp. 179-184, 2001.   DOI
14 D. M. Kelly, I. Hasegawa, R Borders, H. Hatabu, P. M. Boiselle, "High-resolution CT using MDCT: comparison of degree of motion artifact between volumetric and axial methods," American Journal of Roentgenology, Vol. 182, No. 3, pp. 757-759, 2004.   DOI
15 U. Studler, T. Gluecker, G. Bongartz, J. Roth, W. Steinbrich, "Image quality from high-resolution CT of the lung: comparison of axial scans and of sections reconstructed from volumetric data acquired using MDCT," American Journal of Roentgenology, Vol. 185, No. 3, pp. 602-607, 2005.   DOI
16 G. K. Atac A. Parmaksiz, T. Inal, E. Bulur, F. Bulgurlu, T. Oncu, S. Gundogdu, "Patient doses from CT examination in Turkey," Diagnostic and Interventional Radiology, Vol. 21, No. 5, pp. 428-434, 2015.   DOI
17 F. J. Larke, R. L. Kruger, C. H. Cagnon, M. J. Flynn, M. M. McNitt-Gray, X. Wu, P. F. Judy, D. D. Cody, "Estimated radiation dose associated with low-dose chest CT of average-size participants in the National Lung Screening Trial," American Journal of Roentgenology, Vol. 197, No. 5, pp. 1165-1169, 2011.   DOI
18 M. Yanagawa, T. Gyobu, A. N. Leung, M. Kawai, Y. Kawata, H. Sumikawa, O. Honda, N. Tomiyama, "Ultra-low-dose CT of the lung: effect of iterative reconstruction techniques on image quality," Academic Radiology, Vol. 21, No. 6, pp. 695-703, 2014.   DOI
19 W. J. Lee, "Usefulness evaluation of low-dose CT for emphysema: compared with high-resolution CT," Journal of Radiological Science and Technology, Vol. 39, No. 3, pp. 329-336, 2016.   DOI
20 A. Hata, M. Yanagawa, O. Honda, N. Kikuchi, T. Miyata, S. Tsukagoshi, A. Uranishi, N. Tomiyama, "Effect of Matrix Size on the Image Quality of Ultra-high-resolution CT of the Lung: Comparison of 512 ${\times}$ 512, 1024 ${\times}$ 1024, and 2048 ${\times}$ 2048," Academic Radiology, Vol. 25, No. 7, pp. 869-876, 2018.   DOI
21 D. C. Kweon, J. W. Choi, "Analysis of radiation dose for the bolus tracking technique using the CTDI phantom of CT study," Journal of Radiation Industry, Vol. 13, No. 3, pp. 229-234, 2019.
22 D. C. Kweon, J. E. Jung, Y. H. Ryu, W. K. Chung, "Comparison radiation dose with upper and lower limbs of automated injection of contrast media with a bolus tracking system in pulmonary embolism MDCT," Journal of Radiation Industry, Vol. 3, No. 4, pp. 323-328, 2009.
23 T. Kubo, Y. Ohno, M. Nishino, Pei-Jan Lin, S. Gautam, Hans-Ulrich K, H. Hatabu, iLEAD study group, "Low dose chest CT protocol (50 mAs) as a routine protocol for comprehensive assessment of intrathoracic abnormality," European Journal o Radiology Open. Vol. 3, pp. 86-94, 2016.   DOI