Dr. Ian A. Cunningham
Scientist at Robarts Research Institute
SPIE Involvement:
Author | Instructor
Publications (46)

PROCEEDINGS ARTICLE | March 31, 2016
Proc. SPIE. 9783, Medical Imaging 2016: Physics of Medical Imaging
KEYWORDS: Signal to noise ratio, Spatial frequencies, Sensors, X-rays, Quantum efficiency, Radiography, Sensor performance, Image quality, Image quality, Modulation transfer functions, X-ray imaging, X-ray detectors, X-ray detectors, Image quality standards

PROCEEDINGS ARTICLE | March 29, 2016
Proc. SPIE. 9783, Medical Imaging 2016: Physics of Medical Imaging
KEYWORDS: Tissues, Imaging systems, Sensors, Photons, X-rays, Scintillators, Radiography, Diagnostics, Medical imaging, Monte Carlo methods, Image quality, X-ray imaging, X-ray detectors, Signal detection, Dual energy imaging

PROCEEDINGS ARTICLE | March 22, 2016
Proc. SPIE. 9783, Medical Imaging 2016: Physics of Medical Imaging
KEYWORDS: Signal to noise ratio, Sensors, Photons, Quantum efficiency, Interference (communication), Image quality, X-ray imaging, Selenium, X-ray detectors

PROCEEDINGS ARTICLE | March 18, 2015
Proc. SPIE. 9412, Medical Imaging 2015: Physics of Medical Imaging
KEYWORDS: CMOS sensors, Spatial frequencies, Sensors, X-rays, Interference (communication), Modulation transfer functions, X-ray imaging, Selenium, X-ray detectors, Signal detection

PROCEEDINGS ARTICLE | March 18, 2015
Proc. SPIE. 9412, Medical Imaging 2015: Physics of Medical Imaging
KEYWORDS: Electronics, Sensors, Photons, X-rays, Interference (communication), Photodiodes, Modulation transfer functions, X-ray imaging, X-ray detectors, Signal detection

PROCEEDINGS ARTICLE | March 18, 2015
Proc. SPIE. 9412, Medical Imaging 2015: Physics of Medical Imaging
KEYWORDS: Signal to noise ratio, Quantum wells, Sensors, X-rays, Interference (communication), Iodine, Angiography, Image enhancement, X-ray imaging, X-ray detectors

Showing 5 of 46 publications
Course Instructor
SC358: X-Ray Detector Performance and DQE: Principles and Measurements using a Linear-Systems Approach
Medical x-ray imaging systems must be designed to ensure that maximum image quality is obtained for a specified radiation dose to the patient, and quality assurance programs are used to ensure these standards are maintained. This course is designed for anyone who wants to extend their understanding of how image quality is related to detector design and what that implies: how to talk about it, how to think about it, how to measure it and how to compare it. Performance metrics including the MTF, NPS, NEQ and DQE in digital radiography and mammography will be discussed. A cascaded-systems analysis will be used to help interpret the DQE of some real systems. The DQE of photon-counting systems, and the impact of detector limitations, will be discussed. Both non-mathematical intuitive descriptions and more rigorous mathematical descriptions will be presented.
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