Journal of Radiation Protection and Research

The Korean Association for Radiation Protection (대한방사선방어학회)
권호 표지
DOI QR코드

DOI QR Code

Radiation Dose using Chest CT for Patients with Pneumoconiosis Complication - Comparison with International Guidelines -

진폐요양환자의 흉부 CT촬영에 사용된 선량 - 국내외 진단 참고 준위와 비교 -

  • Lee, Won-Jeong (Department of Radiological Technology, Daejeon Health Science College)
  • 이원정 (대전보건대학교 방사선과)
  • Received : 2014.07.09
  • Accepted : 2014.12.05
  • Published : 2014.12.30

Abstract

We report here on the results of evaluating the radiation doses using chest computed tomography (CT) for patients with pneumoconiosis complication. For the first time, we visited the 17 MIPs to evaluate the dose-length product (DLP, $mGy{\cdot}cm$), CT unit, and protocols of scanning and image reconstruction those is routinely used for treating patients with pneumoconiosis who have complication. All statistical analysis was performed using the Statistical Program for Social Sciences (SPSS ver. 19.0, Chicago, IL, USA). Mean of total DLP was $727.7mGy{\cdot}cm$, ranging from 272.0 to $1228.7mGy{\cdot}cm$. DLP from obtaining parenchymal lung images was significantly reduced than that from obtaining total lung images (555.9 vs. 707.2, p<0.001). Third quartile of total and pre-scanning DLP was 1036.1 and $504.1mGy{\cdot}cm$, respectively. Chest CT radiation doses for patients with pneumoconiosis complication are similar with korean diagnostic reference level as well as international guidelines.

Keywords

File

Download PDF

References

  1. 이원정, 박재성, 김성진, 등. 전국 진폐요양기관 흉부방사선분야 실태조사 결과 최초 보고. 대한영상의학회지. 2010;63(5):431-438.
  2. 이원정, 김성진, 박재성, 등. 진폐요양기관에서 흉부방사선촬영을 위해 사용되는 선량과 화질의 관계:국내 진단참고준위와 비교. 대한영상의학회지. 2012;66(3):255-262.
  3. Savranlar A, Altin R, Mahmutyazicioglu K, et al. Comparison of chest radiography and high-resolution computed tomography findings in early and low-grade coal worker's pneumoconiosis. Eur. J. Radiol. 2004;51(2):175-180. https://doi.org/10.1016/j.ejrad.2003.10.017
  4. Blum T, Kollmeier J, Ott S, et al. Computed tomography for diagnosis and grading of dust-induced occupational lung disease. Curr. Opin. Pulm. Med. 2008;14(2):135-140. https://doi.org/10.1097/MCP.0b013e3282f5248e
  5. Ochsmann E, Carl T, Brand P, et al. Inter-reader variability in chest radiography and HRCT for the early detection of asbestos-related lung and pleural abnormalities in a cohort of 636 asbestos-exposed subjects. Int. Arch. Occup. Environ. Health. 2010;83(1):39-46. https://doi.org/10.1007/s00420-009-0443-4
  6. ICRP. Managing Patient Dose in Computed Tomography. Publication 87. 2000
  7. Sarma A, Heilbrun ME, Conner KE, et al. Radiation and chest CT scan examinations: what do we know? Chest. 2012;142(3):750-760. https://doi.org/10.1378/chest.1358860
  8. Tzedakis A, Perisinakis K, Raissaki M, et al. The effect of z overscanning on radiation burden of pediatric patients undergoing head CT with multidetector scanners: a Monte Carlo study. Med. Phys. 2006;33(7):2472-2478. https://doi.org/10.1118/1.2207212
  9. Goo HW. CT radiation dose optimization and estimation: an update for radiologists. Korean. J. Radiol. 2012;13(1):1-11. https://doi.org/10.3348/kjr.2012.13.1.1
  10. National Institute of Food and Drug Safety Evaluation. National survey of radiation dose of computed tomography in Korea. The Annual Report of KFDA 2009.
  11. Simantirakis G, Hourdakis CJ, Economides S, et al. Image quality and patient dose in computed tomography examinations in Greece. Radiat. Prot. Dosimetry. 2011;147(1-2):129-132. https://doi.org/10.1093/rpd/ncr282
  12. Heyer CM, Mohr PS, Lemburg SP, et al. Image quality and radiation exposure at pulmonary CT angiography with 100- or 120-kVp protocol: prospective randomized study. Radiology. 2007;245(2):577-583. https://doi.org/10.1148/radiol.2452061919
  13. Waaijer A, Prokop M, Velthuis BK, et al. Circle of Willis at CT angiography: dose reduction and image quality--reducing tube voltage and increasing tube current settings. Radiology. 2007;242(3): 832-839. https://doi.org/10.1148/radiol.2423051191
  14. Szucs-Farkas Z, Kurmann L, Strautz T, et al. Patient exposure and image quality of low-dose pulmonary computed tomography angiography: comparison of 100- and 80-kVp protocols. Invest. Radiol. 2008;43(12): 871-876. https://doi.org/10.1097/RLI.0b013e3181875e86
  15. Park EA, Lee W, Kang JH, et al. The image quality and radiation dose of 100-kVp versus 120-kVp ECG-Gated 16-slice CT coronary angiography. Korean. J. Radiol. 2009; 10(3):235-243. https://doi.org/10.3348/kjr.2009.10.3.235
  16. Marin D, Nelson RC, Schindera ST, et al. Low-tube-voltage, high-tube-current multidetector abdominal CT: improved image quality and decreased radiation dose with adaptive statistical iterative reconstruction algorithm-initial clinical experience. Radiology. 2010;254(1):145- 153. https://doi.org/10.1148/radiol.09090094
  17. Huda W, Ogden KM, Khorasani MR. Converting dose-length product to effective dose at CT. Radiology. 2008;248(3):995-1003. https://doi.org/10.1148/radiol.2483071964
  18. Kalender WA, Schmidt B, Zankl M, et al. A PC program for estimating organ dose and effective dose values in computed tomography. Eur. Radiol. 1999;9(3):555-562. https://doi.org/10.1007/s003300050709
  19. Tzedakis A, Damilakis J, Perisinakis K, et al. The effect of z overscanning on patient effective dose from multidetector helical computed tomography examinations. Med. Phys. 2005;32(6):1621-1629. https://doi.org/10.1118/1.1924309
  20. Kalra MK, Maher MM, Toth TL, et al. Strategies for CT radiation dose optimization. Radiology. 2004; 230(3):619-628. https://doi.org/10.1148/radiol.2303021726
  21. Hidajat N, Maurer J, Schroder RJ, et al. Relationships between physical dose quantities and patient dose in CT. Br. J. Radiol. 1999; 72(858):556-561. https://doi.org/10.1259/bjr.72.858.10560337