Extension of DQE to include scatter, grid, magnification, and focal spot blur: A new experimental technique and metric

Progress in Biomedical Optics and Imaging - Proceedings of SPIE

Volumn 7258, Issue , 2009, Pages

  Ranger, N T ^a   Mackenzie, A ^b   Honey, I D ^c   Dobbins III, J T ^a   Ravin, C E ^a   Samei, E ^a  

^a DUKE UNIVERSITY MEDICAL CENTER   (United States)

^b KING S COLLEGE HOSPITAL   (United Kingdom)

^c GUY'S AND ST THOMAS' NHS FOUNDATION TRUST   (United Kingdom)

Author keywords

Detective quantum efficiency; Digital radiography; DQE; eDQE; Effective detective quantum efficiency; Image quality; Modulation transfer function; MTF; Noise power spectrum; NPS; Scatter

Indexed keywords

DETECTIVE QUANTUM EFFICIENCY; DIGITAL RADIOGRAPHY; DQE; EDQE; EFFECTIVE DETECTIVE QUANTUM EFFICIENCY; MODULATION TRANSFER FUNCTION; MTF; NOISE POWER SPECTRUM; NPS; SCATTER;

DEGRADATION; IMAGE QUALITY; IMAGE REGISTRATION; MEDICAL IMAGING; MODULATION; OPTICAL TRANSFER FUNCTION; PARTICLE DETECTORS; PEDIATRICS; PHOTODEGRADATION; POWER SPECTRUM; RADIOLOGY; SEMICONDUCTOR QUANTUM DOTS; SPECTRUM ANALYSIS; TRANSFER FUNCTIONS; X RAY RADIOGRAPHY;

QUANTUM EFFICIENCY;

EID: 66749147327     PISSN: 16057422     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.813779     Document Type: Conference Paper

References (23)

1. IEC 62220-1, "Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 1: Determination of the detective quantum efficiency." Geneva Switzerland: International Electrotechnical Commission (2003).
2. Maidment A.D., Albert M., Bunch P.C., Cunningham I.A., Dobbins III J.T., Gagne R.M., Nishikawa R.M., Van Metter R.L., Wagner R.F., "Standardization of NPS measurements: interim report of AAPM TG16," [Medical Imaging 2003: Physics of Medical Imaging. Edited by Yaffe M.J., Antonuk L.E.] SPIE 5030, 523-532 (2003).
3. Illers H., Buhr E., Hoeschen C., "Measurement of the detective quantum efficiency (DQE) of digital X-ray detectors according to the novel standard IEC 62220-1." Rad Protect Dosim 114, 39-44 (2005).
4. Samei E., Ranger N.T., Dobbins III J.T., 3rd, Chen Y., "Intercomparison of methods for image quality characterization. I. Modulation transfer function." Med Phys 33, 1454-1465 (2006).
5. Dobbins III J.T., Samei E., Ranger N.T., Chen Y., "Intercomparison of methods for image quality characterization. II. Noise power spectrum." Med Phys 33, 1466-1475 (2006).
6. Ranger N.T., Samei E., Dobbins III J.T., Ravin C.E., "Assessment of detective quantum efficiency: intercomparison of a recently introduced international standard with prior methods." Radiology 243, 785-795 (2007).
7. Muntz P.E., "Analysis of the significance of scattered radiation in reduced dose mammography, including magnification effects, scatter suppression, and focal spot and detector blurring." Med Phys 6, 110-117 (1979).
8. Samei E., "Performance of Digital Radiography Detectors: Factors Affecting Sharpness and Noise." [Advances in Digital Radiography] Oak Brook, IL: Radiological Society of North America (RSNA) Publication, 49-61 (2003).
9. Kyprianou I.S., Rudin S., Bednarek D.R., Hoffmann K.R., "Generalizing the MTF and DQE to include x-ray scatter and focal spot unsharpness: application to a new microangiographic system." Med Phys 32, 613-626 (2005).
10. Kyprianou I.S., Rudin S., Bednarek D.R., Hoffmann KR, "Study of the generalized MTF and DQE for a new microangiographic system." SPIE 5368, 349-360 (2004).
11. Kyprianou I.S., Ganguly A., Rudin S., Bednarek D.R., Gallas B.D., Myers K.J., "Efficiency of the human observer compared to an ideal observer based on a generalized NEQ which incorporates scatter and geometric unsharpness: evaluation with a 2AFC experiment." SPIE 5749, 251-262 (2005).
12. Yadava G.K., Kyprianou I.S., Rudin S., Bednarek D.R., Hoffman K.R., "Generalized performance evaluation of x-ray image intensifier compared with a microangiographic system." SPIE 5745, 419-429 (2005).
13. Shaw C.C., Liu X., Lemacks M., Rong J.X., Whitman G.J., "Optimization of MTF and DQE in magnification radiography - a theoretical analysis." SPIE 3977, 467-475 (2000).
14. Boyce S.J., Samei E., "Imaging properties of digital magnification radiography." Med Phys 33, 984-996 (2006).
15. Conway B.J., Butler P.F., Duff J.E., Fewell T.R., Gross R.E., Jennings R.J., Koustenis G.H., McCrohan J.L., Rueter F.G., Showalter C.K., "Beam quality independent attenuation phantom for estimating patient exposure from x-ray automatic exposure controlled chest examinations." Med Phys 11, 827-832 (1984).
16. Food and Drug Administration and Conference of Radiation Control Program Directors, "Nationwide Evaluation of X-ray Trends: Twenty-five years of NEXT" brochure pub. (2003).
17. Floyd C.E., Lo J.Y., Chotas H.G., Ravin C.E., "Quantitative scatter measurement in digital radiography using a photostimulable phosphor imaging system." Med Phys 18, 408-413, (1991).
18. Samei E., Lo J.Y., Yoshizumi T.T., Jesneck J.L., Dobbins III J.T., Floyd C.E., McAdams H.P., Ravin C.E., "Comparative scatter and dose performance of slot-scan and full-field digital chest radiography systems." Radiology 235, 940-949 (2005).
19. Flynn M.J., Samei E., "Experimental comparison of noise and resolution for 2k and 4k storage phosphor radiography systems." Med Phys 26, 1612-1623 (1999).
20. Samei E., Flynn M.J., Reimann D.A., "A method for measuring the presampled MTF of digital radiographic systems using an edge test device." Med Phys 25, 102-113 (1998).
21. Samei E., Ranger N.T., Mackenzie A., Honey I.D., Dobbins J.T. III, Ravin C.E., "Detector or System? Extending the Concept of Detective Quantum Efficiency to Characterize the Performance of Digital Radiographic Imaging Systems." Radiology 249, 926-937 (2008).
22. Samei E., Ranger N.T., Mackenzie A., Honey I.D., Dobbins J.T. III, Ravin C.E., "Effective DQE (eDQE) and speed of digital radiographic systems: An experimental methodology." Medical Physics (submitted) (2008).
23. Ertan F., Mackenzie A., Urbanczyk H., Ranger N.T., Samei E., "Use of effective detective quantum efficiency to optimise radiographic exposures for chest imaging with computed radiography." SPIE (in press) (2009).