Novel methods of measuring single scan dose profiles and cumulative dose in CT

Medical Physics

Volumn 32, Issue 1, 2005, Pages 98-109

  Nakonechny, K D ^a   Fallone, B G ^a   Rathee, S ^a  

^a UNIVERSITY OF ALBERTA   (Canada)

Author keywords

Computed tomography; CT; CTDI; Diamond detector; Dose profile; Ion chamber; Radiation dose

Indexed keywords

DIAMONDS; DOSIMETRY; FLUORINE COMPOUNDS; INTEGRATED CIRCUITS; INTEGRATION; IONIZATION CHAMBERS; IONS; LITHIUM FLUORIDE; PHANTOMS; SCANNING;

CTDI; DIAMOND DETECTORS; DOSE PROFILE; ELLIPTIC CROSS-SECTIONS; NUMERICAL INTEGRATIONS; PENCIL IONIZATION CHAMBERS; PERIPHERAL POINTS; WATER EQUIVALENT PHANTOMS;

COMPUTERIZED TOMOGRAPHY;

LITHIUM FLUORIDE;

ARTICLE; COMPUTED TOMOGRAPHY DOSE INDEX; COMPUTER ASSISTED TOMOGRAPHY; DEVICE; DIAMOND DETECTOR; DOSE CALCULATION; DOSIMETRY; HUMAN; IONIZATION CHAMBER; MEASUREMENT; PHANTOM; PRIORITY JOURNAL; RADIATION DOSE; SINGLE SCAN DOSE PROFILE;

EID: 12844262152     PISSN: 00942405     EISSN: None     Source Type: Journal    
DOI: 10.1118/1.1835571     Document Type: Article

References (35)

1. F. A. Mettler, Jr., P. W. Wiest, J. A. Locken, and C. A. Kelsey, "CT scanning: Patterns of use and dose," J. Radiol. Prot. 20, 353-359 (2000).
2. J. V. Atherton and W. Huda, "CT doses in cylindrical phantoms," Phys. Med. Biol. 40, 891-911 (1995).
3. P. C. Shrimpton and D. G. Jones, "Normalised organ doses for x-ray computed tomography calculated using Monte Carlo techniques and a mathematical anthropomorphic phantom," Radiat. Prot. Dosim. 49, 241-243 (1993).
4. J. M. Boone, V. N. Cooper III, W. R. Nemzek, J. P. McGahan, and J. A. Seibert, "Monte Carlo assessment of computed tomography dose to tissue adjacent to the scanned volume," Med. Phys. 27, 2393-2407 (2000).
5. J. V. Atherton and W. Huda, "Energy imparted and effective doses in computed tomography," Med. Phys. 23, 735-741 (1996).
6. T. B. Shope, R. M. Gagne, and G. C. Johnson, "A method for describing the doses delivered by transmission x-ray computed tomography," Med. Phys. 8, 488-495 (1981).
7. R. A. Jucius and G. X. Kambic, "Radiation dosimetry in computed tomography," Proc. Soc. Photo-Opt. Instrum. Eng. 127, 286 (1977).
8. W. Leitz, B. Axelsson, and G. Szendro, "Computed tomography dose assessment-a practical approach," Radiat. Prot. Dosim. 57, 377-380 (1995).
9. "European Guidelines on Quality Criteria for Computed Tomography," Report No. 16262, Office for Official Publications of the European Communities, Luxembourg, 1999.
10. A. Suzuki and M. N. Suzuki, "Use of a pencil-shaped ionization chamber for measurement of exposure resulting from a computed tomography scan," Med. Phys. 5, 536-539 (1978).
11. M. M. Moore, R. K. Cacak, and W. R. Hendee, "Multisegmented ion chamber for CT scanner dosimetry," Med. Phys. 8, 640-645 (1981).
12. R. L. Dixon and E. E. Ekstrand, "A film dosimetry system for use in computed tomography," Radiology 127, 255-258 (1978).
13. T. B. Shope, T. J. Morgan, C. K. Showalter, K. S. Pentlow, L. N. Rothenberg, D. R. White, and R. D. Speller, "Radiation dosimetry survey of computed tomography systems from ten manufacturers," Br. J. Radiol. 55, 60-69 (1982).
14. AAPM Report No. 39: Specification and Acceptance Testing of Computed Tomography Scanners, Task Group 2: Diagnostic X-Ray Imaging Committee (American Institute of Physics, New York, 1993).
15. 60Co gamma rays," Radiat. Prot. Dosim. 106, 33-43 (2003).
16. W. U. Laub and T. Wong, "The volume effect of detectors in the dosimetry of small fields used in IMRT," Med. Phys. 30, 341-347 (2003).
17. S. N. Rustgi, "Evaluation of the dosimetric characteristics of a diamond detector for photon beam measurements," Med. Phys. 22, 567-570 (1995).
18. B. Planskoy, "Evaluation of diamond radiation dosemeters," Phys. Med. Biol. 25, 519-532 (1980).
19. M. F. McNitt, C. H. Cagnon, T. D. Solberg, and I. Chetty, "Radiation dose in spiral CT: The relative effects of collimation and pitch," Med. Phys. 26, 409-414 (1999).
20. H. Y. Tsai, C. J. Tung, M. H. Huang, and Y. L. Wan, "Analyses and applications of single scan dose profiles in computed tomography," Med. Phys. 30, 1982-1989 (2003).
21. T. Cheung, Q. Cheng, D. Feng, and M. J. Stokes, "Study on examinee's dose delivered in computed tomography," Phys. Med. Biol. 46, 813-820 (2001).
22. P. L. McGhee and S. Humphreys, "Radiation dose associated with spiral computed tomography," Can. Assoc. Radiol. J. 45, 124-129 (1994).
23. R. L. Dixon, "A new look at CT dose measurement: Beyond CTDI," Med. Phys. 30, 1272-1280 (2003).
24. E. L. Nickoloff, A. K. Dutta, and Z. F. Lu, "Influence of phantom diameter, kVp and scan mode upon computed tomography dose index," Med. Phys. 30, 395-402 (2003).
25. "Performance standards for ionizing radiation emitting products," 21CFR 1020.33, U.S. FDA Code of Federal Regulations 2003.
26. J. J. Spokas, "Dose descriptors for computed tomography," Med. Phys. 9, 288-292 (1982).
27. A. D. Oliveira, J. G. Alves, A. F. Carvalho, and J. V. Carreiro, "Dose profile and dose index analysis in computed tomography," Radiat. Prot. Dosim. 57, 387-391 (1995).
28. H. D. Nagel, "Radiation exposure in computed tomography," European Coordination Committee of the Radiological and Electromedical Industries, 2000.
29. M. F. McNitt-Gray, "AAPM/RSNA Physics Tutorial for Residents: Topics in CT. Radiation dose in CT," Radiographics 22, 1541-1553 (2002).
30. J. Seuntjens, A. H. L. Aalbers, T. W. M. Grimbergen, B. J. Mijnheer, H. Thierens, J. Van Dam, F. W. Wittkamper, J. Zoetlief, M. Piessens, and P. Piret, "Suitability of diamond detectors to measure central axis depth kerma curves for low- and medium-energy x-rays," in Kilovoltage X-Ray Dosimetry (Medical Physics, Madison, 1999), pp. 227-238.
31. V. S. Khrunov, S. S. Martynov, S. M. Vatnitsky, I. A. Ermakov, A. M. Chervjakov, D. L. Karlin, V. I. Fominych, and Yu. V. Tarbcyev, "Diamond detectors in relative dosimetry of photon, electron and proton radiation fields," Radiat. Prot. Dosim. 33, 155-157 (1990).
32. Z. Yin, R. P. Hugtenburg, S. Green, and A. H. Beddoe, "Dose responses of diamond detectors to monoenergetic x-rays," Nucl. Instrum. Methods Phys. Res. B 213, 646-649 (2004).
33. H. Akima, "A new method of interpolation and smooth curve fitting based on local procedures," J. ACM 17, 589-602 (1970).
34. R. L. Burden and J. D. Faires, Numerical Analysis, 6th ed. (Brooks/Cole, Pacific Grove, 1997).
35. J. L. McCrohan, J. F. Patterson, R. M. Gagne, and H. A. Goldstein, "Average radiation doses in a standard head examination for 250 CT systems," Radiology 163, 263-268 (1987).