Prof. David J. Manning Profile

Prof. David J. Manning

Professor

SPIE Involvement:

Senior status | Symposium Chair | Conference Program Committee | Conference Chair | Author

Publications (29)

Proceedings Article | 28 April 2017

Hounsfield Unit inaccuracy in computed tomography lesion size and density, diagnostic quality vs attenuation correction

Katy Szczepura, John Thompson, David Manning

Proc. SPIE. 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: X-ray computed tomography, Calibration, Scanners, Calcium, Diagnostics, Bone, Image quality, Computed tomography, Nuclear medicine, Positron emission tomography, Chest imaging, Lymphatic system

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Proceedings Article | 24 April 2017

Impact of tube current modulation on lesion conspicuity index in hi-resolution chest computed tomography

Katy Szczepura, David Tomkinson, David Manning

Proc. SPIE. 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Signal to noise ratio, Chest, Modulation, Tissues, Signal attenuation, Reflectivity, Diagnostics, Lung, Image quality, Software development, Computed tomography, Radiology

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Proceedings Article | 24 April 2017

Effects of increased compression with an ultrasound transducer on the conspicuity of breast lesions in a phantom

Katy Szczepura, Tahreem Faqir, David Manning

Proc. SPIE. 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Breast, Image compression, Visualization, Ultrasonography, Image quality, Transducers, Mammography, Visibility, Breast imaging

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Ultrasound imaging of the breast is highly operator dependent. The amount of pressure applied with the transducer has a direct impact on the lesion visibility in breast ultrasound. The conspicuity index is a quantitative measure of lesion visibility, taking into account more parameters than standard measures that impact on lesion detection. This study assessed the conspicuity of lesions within a breast phantom using increased transducer compression in breast ultrasound. Methods A phantom was constructed of gelatine to represent adipose tissue, steel wool for glandular/blood vessels and silicone spheres to represent lesions, this meant that the lesions were also compressible, but less than the surrounding tissue. The phantom was imaged under increasing transducer compression. The conspicuity index was measured using the Conspicuity Index Software. The distance between the transducer surface and lesion surface was measured as an indication of increased compression. Results When moderate compression (17mm) was applied, the conspicuity index increased resulting in better visualisation of the silicone lesions. However, with increased compression the conspicuity index decreased. New work to be presented The conspicuity index has never been demonstrated in ultrasound imaging before. This is preliminary phantom work to demonstrate the impact of increased transducer compression on quantitative lesion visibility assessment. Conclusion The compression applied should be considered for optimum visualisation, as excessive pressure decreases conspicuity. However, further work needs to be conducted in order to consider other factors, such as density of the breast and lesion location, for a better understanding of the effect of compression on the visualisation of the lesion. A human study is planned.

Proceedings Article | 24 March 2016

Validated novel software to measure the conspicuity index of lesions in DICOM images

K. Szczepura, D. Manning

Proc. SPIE. 9787, Medical Imaging 2016: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Signal to noise ratio, Visualization, Error analysis, Reliability, Diagnostics, Medical imaging, Image quality, Software development, Modulation transfer functions, Spatial resolution, Image display, Excel, Visibility

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Proceedings Article | 17 March 2015

A phantom-based JAFROC observer study of two CT reconstruction methods: the search for optimisation of lesion detection and effective dose

John Thompson, Dev Chakraborty, Katy Szczepura, Ioannis Vamvakas, Andrew Tootell, David Manning, Peter Hogg

Proc. SPIE. 9416, Medical Imaging 2015: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Infrared imaging, Statistical analysis, Chest, CT reconstruction, Chemical species, Image restoration, Diagnostics, Medical imaging, Image filtering, Computed tomography

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Proceedings Article | 3 March 2011

Classification of radiological errors in chest radiographs, using support vector machine on the spatial frequency features of false- negative and false-positive regions

Mariusz Pietrzyk, Tim Donovan, Patrick Brennan, Alan Dix, David Manning

Proc. SPIE. 7966, Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Eye, Detection and tracking algorithms, Visualization, Spatial frequencies, Wavelets, Feature extraction, Lung, Medical imaging, Algorithm development, Chest imaging

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SPIE Conference Volume | 2 March 2011

Medical Imaging 2011: Image Perception, Observer Performance, and Technology Assessment

Proceedings Article | 27 February 2010

Implication of the first decision on visual information-sampling in the spatial frequency domain in pulmonary nodule recognition

Mariusz Pietrzyk, David Manning, Tim Donovan, Alan Dix

Proc. SPIE. 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Eye, Visual analytics, Visualization, Spatial frequencies, Wavelets, Error analysis, Medical imaging, Mammography, Chest imaging, Information visualization

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Proceedings Article | 24 February 2010

Nuisance levels of noise effects radiologists' performance

Mark McEntee, Amina Coffey, John Ryan, Aaron O'Beirne, Rachel Toomey, Micheal Evanoff, David Manning, Patrick Brennan

Proc. SPIE. 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Chest, Visualization, Calibration, Ultrasonography, X-rays, Heart, Radiology, Acoustics, Chest imaging, Picture Archiving and Communication System

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SPIE Conference Volume | 23 February 2010

Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment

Proceedings Article | 13 March 2009

Spatial frequency characteristics at image decision-point locations for observers with different radiological backgrounds in lung nodule detection

Mariusz Pietrzyk, David Manning, Alan Dix, Tim Donovan

Proc. SPIE. 7263, Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Eye, Statistical analysis, Visual analytics, Visualization, Spatial frequencies, Wavelets, Lung, Medical imaging, Chest imaging, Information visualization

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Proceedings Article | 13 March 2009

Reverse hierarchy theory and medical image perception

T. Donovan, D. Manning

Proc. SPIE. 7263, Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment

KEYWORDS: Signal to noise ratio, Eye, Chest, Visualization, Pathology, Feature extraction, Lung, Medical imaging, Chest imaging, Perceptual learning

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SPIE Conference Volume | 27 February 2009

Medical Imaging 2009: Image Perception, Observer Performance, and Technology Assessment

SPIE Conference Volume | 3 April 2008

Medical Imaging 2008: Image Perception, Observer Performance, and Technology Assessment

Proceedings Article | 6 March 2008

Relations between physical properties of local and global image-based elements and the performance of human observers in lung nodule detection

Mariusz Pietrzyk, David Manning, Alan Dix, Tim Donovan