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A phantom-based JAFROC observer study of two CT reconstruction methods : the search for optimisation of lesion detection and effective dose (2015)
Journal Article
Mello-Thoms, C., Kupinski, M., Thompson, J., Chakraborty, D., Szczepura, K., Vamvakas, I., …Hogg, P. (2015). A phantom-based JAFROC observer study of two CT reconstruction methods : the search for optimisation of lesion detection and effective dose. Proceedings of SPIE, 9416, 94160B. https://doi.org/10.1117/12.2081632

Purpose: To investigate the dose saving potential of iterative reconstruction (IR) in a computed tomography (CT) examination of the thorax. Materials and Methods: An anthropomorphic chest phantom containing various configurations of simulated lesi... Read More about A phantom-based JAFROC observer study of two CT reconstruction methods : the search for optimisation of lesion detection and effective dose.

Comparison of effective dose and lifetime risk of cancer Incidence of CT attenuation correction acquisitions and radiopharmaceutical administration for myocardial perfusion imaging (2014)
Journal Article
Tootell, A., Szczepura, K., & Hogg, P. (2014). Comparison of effective dose and lifetime risk of cancer Incidence of CT attenuation correction acquisitions and radiopharmaceutical administration for myocardial perfusion imaging. British Journal of Radiology, 87(1041), 20140110. https://doi.org/10.1259/bjr.20140110

Objective: To measure the organ dose and calculate effective dose from CT attenuation correction (CTAC) acquisitions from four commonly used gamma camera single photon emission CT/CT systems. Methods: CTAC dosimetry data was collected using therm... Read More about Comparison of effective dose and lifetime risk of cancer Incidence of CT attenuation correction acquisitions and radiopharmaceutical administration for myocardial perfusion imaging.

A 6 year study of mammographic compression force : practitioner variability within and between screening sites (2014)
Journal Article
Mercer, C., Szczepura, K., Kelly, J., Millington, S., Denton, D., Borgen, R., …Hogg, P. (2015). A 6 year study of mammographic compression force : practitioner variability within and between screening sites. Radiography, 21(1), 68-73. https://doi.org/10.1016/j.radi.2014.07.004

Background The application of compression force in mammography is more heavily influenced by the practitioner rather than the client. This can affect client experience, radiation dose and image quality. This research investigates practitioner comp... Read More about A 6 year study of mammographic compression force : practitioner variability within and between screening sites.

An overview of measuring and modelling dose and risk from ionising radiation for medical exposures (2014)
Journal Article
risk from ionising radiation for medical exposures. Radiography, 20(4), 323-332. https://doi.org/10.1016/j.radi.2014.05.002

PURPOSE: This paper gives an overview of the methods that are used to calculate dose and risk from exposure to ionizing radiation as a support to other papers in this special issue. BACKGROUND: The optimization of radiation dose is a legal requir... Read More about An overview of measuring and modelling dose and risk from ionising radiation for medical exposures.

An audit to investigate the impact of false positive breast screening results and diagnostic work-up on re-engagement with subsequent routine screening (2014)
Journal Article
Nightingale, J., Borgen, R., Porter-Bennett, L., & Szczepura, K. (2014). An audit to investigate the impact of false positive breast screening results and diagnostic work-up on re-engagement with subsequent routine screening. Radiography, 21(1), 7-10. https://doi.org/10.1016/j.radi.2014.05.005

Introduction: Women attending breast screening may have suspicious mammographic findings that are subsequently found at assessment clinic to be normal (false positive, FP). A false positive diagnosis is not harmless, with short and long term negativ... Read More about An audit to investigate the impact of false positive breast screening results and diagnostic work-up on re-engagement with subsequent routine screening.

Breast tissue bulge and lesion visibility during stereotactic biopsy – a phantom study (2014)
Journal Article
Williams, S., Hackney, L., Hogg, P., & Szczepura, K. (2014). Breast tissue bulge and lesion visibility during stereotactic biopsy – a phantom study. Radiography, 20(3), 271-276. https://doi.org/10.1016/j.radi.2014.04.006

Background During mammography guided stereotactic breast biopsy a bulge of tissue can form in the paddle needle biopsy aperture. This bulge has been estimated to have a height of up to 30% of the breast itself. During clinical biopsy we have noti... Read More about Breast tissue bulge and lesion visibility during stereotactic biopsy – a phantom study.

A free-response evaluation determining value in the computed tomography attenuation correction image for revealing pulmonary incidental findings : a phantom study (2014)
Journal Article
Thompson, J., Hogg, P., Manning, D., Szczepura, K., & Chakraborty, D. (2014). A free-response evaluation determining value in the computed tomography attenuation correction image for revealing pulmonary incidental findings : a phantom study. Academic radiology, 21(4), 538-545. https://doi.org/10.1016/j.acra.2014.01.003

RATIONALE AND OBJECTIVES: The purpose of this study was to compare lesion-detection performance when interpreting computed tomography (CT) images that are acquired for attenuation correction when performing single photon emission computed tomography/... Read More about A free-response evaluation determining value in the computed tomography attenuation correction image for revealing pulmonary incidental findings : a phantom study.

Radionuclide Metabolic Therapy (2013)
Book
S. Mantel, E., Williams, J., Szczepura, K., Sjögreen Gleisner, K., Strigari, L., Flux, G., …S. Cutler, C. (2013). C. Peştean, V. Veloso Jerónimo, & P. Hogg (Eds.), Radionuclide Metabolic Therapy. European Association of Nuclear Medicine. https://doi.org/10.52717/YFWJ5262

Fact or fiction : an analysis of the 10 kVp ‘rule’ in computed radiography (2013)
Journal Article
radiography. Radiography, 19(3), 223-227. https://doi.org/10.1016/j.radi.2013.05.003

Purpose: To determine whether increasing the tube voltage by 10 kVp whilst reducing the tube current by 50% (10 kVp ‘rule’) produces similar perceptual image quality. Method: 391 matched pairs of anthropomorphic chest phantom X-ray images were pro... Read More about Fact or fiction : an analysis of the 10 kVp ‘rule’ in computed radiography.

Tissue bulge during stereotactic core biopsy (2013)
Journal Article
Hackney, L., Williams, S., Hogg, P., & Szczepura, K. (2013). Tissue bulge during stereotactic core biopsy. Radiography, 19(4), 366-368. https://doi.org/10.1016/j.radi.2013.06.007

In full field digital mammography (FFDM) the whole breast is subjected to compression with a perspex compression paddle in order to reduce breast thickness and improve image quality. Once a mammographic abnormality has been detected using FFDM and a... Read More about Tissue bulge during stereotactic core biopsy.

Practitioner compression force variation in mammography : a 6 year study (2013)
Journal Article
Mercer, C., Hogg, P., Szczepura, K., & Denton, E. (2013). Practitioner compression force variation in mammography : a 6 year study. Radiography, 19(3), 200-206. https://doi.org/10.1016/j.radi.2013.06.001

The application of breast compression in mammography may be more heavily influenced by the practitioner rather than the client. This could affect image quality and will affect client experience. This study builds on previous research to establish i... Read More about Practitioner compression force variation in mammography : a 6 year study.

A method to measure paddle and detector pressures and footprints in mammography (2013)
Journal Article
Hogg, P., Szczepura, K., Darlington, A., & Maxwell, A. (2013). A method to measure paddle and detector pressures and footprints in mammography. Medical Physics, 40(4), 041907. https://doi.org/10.1118/1.4792720

Purpose: Compression is necessary in mammography to improve image quality and reduce radiation burden. Maximizing the amount of breast in contact with the image receptor (IR) is important. To achieve this, for the craniocaudal projection, there is n... Read More about A method to measure paddle and detector pressures and footprints in mammography.

Optimising the number of thermoluminescent dosimeters required for the measurement of effective dose for computed tomography attenuation correction data in SPECT/CT myocardial perfusion imaging (2013)
Journal Article
Tootell, A., Szczepura, K., & Hogg, P. (2013). Optimising the number of thermoluminescent dosimeters required for the measurement of effective dose for computed tomography attenuation correction data in SPECT/CT myocardial perfusion imaging. Radiography, 19(1), 42-47. https://doi.org/10.1016/j.radi.2012.11.001

Background The use of thermoluminescent dosimeters (TLDs) is regarded as time consuming and laborious. As part of our dosimetry research it was necessary to optimise the use of our resources, both physical and time. Experimental work was carried... Read More about Optimising the number of thermoluminescent dosimeters required for the measurement of effective dose for computed tomography attenuation correction data in SPECT/CT myocardial perfusion imaging.

Pressure and breast thickness in mammography : an exploratory calibration study (2013)
Journal Article
Hogg, P., Taylor, M., Szczepura, K., Mercer, C., & Denton, E. (2013). Pressure and breast thickness in mammography : an exploratory calibration study. British Journal of Radiology, 86(1021), 1-7. https://doi.org/10.1259/bjr.20120222

Objective To perform a calibration study to provide data to help improve consistency in the pressure that is applied during mammography. Methods Automatic readouts of breast thickness accuracy vary between mammography machines; therefore, one m... Read More about Pressure and breast thickness in mammography : an exploratory calibration study.

Analysis of CT acquisition parameters suitable for use in SPECT/CT : a free-response receiver operating characteristic study (2012)
Journal Article
Thompson, J., Hogg, P., Szczepura, K., & Manning, D. (2012). Analysis of CT acquisition parameters suitable for use in SPECT/CT : a free-response receiver operating characteristic study. Radiography, 18(4), 238-243. https://doi.org/10.1016/j.radi.2012.05.004

Purpose This dose optimisation free-response receiver operating characteristic (FROC) study compares the diagnostic performance of 8 CT acquisition parameter settings suitable for use with diagnostic quality SPECT/CT systems. Observers were requi... Read More about Analysis of CT acquisition parameters suitable for use in SPECT/CT : a free-response receiver operating characteristic study.

ROCView : prototype software for data collection in jackknife alternative free-response receiver operating characteristic analysis (2012)
Journal Article
Thompson, J., Hogg, P., Thompson, S., Manning, D., & Szczepura, K. (2012). ROCView : prototype software for data collection in jackknife alternative free-response receiver operating characteristic analysis. British Journal of Radiology, 85, 1320-1326. https://doi.org/10.1259/bjr/99497945

ROCView has been developed as an image display and response capture (IDRC) solution to image display and consistent recording of reader responses in relation to the free-response receiver operating characteristic paradigm. A web-based solution to IDR... Read More about ROCView : prototype software for data collection in jackknife alternative free-response receiver operating characteristic analysis.

The readout thickness versus the measured thickness for a range of screen film mammography (SFM) and full-field digital mammography (FFDM) units (2011)
Journal Article
Hauge, I., Hogg, P., Szczepura, K., Connolly, P., McGill, G., & Mercer, C. (2011). The readout thickness versus the measured thickness for a range of screen film mammography (SFM) and full-field digital mammography (FFDM) units. Medical Physics, 39(1), 263-271. https://doi.org/10.1118/1.3663579

PURPOSE: To establish a simple method to determine breast readout accuracy on mammography units. METHODS: A thickness measuring device (TMD) was used in conjunction with a breast phantom. This phantom had compression characteristics similar to human... Read More about The readout thickness versus the measured thickness for a range of screen film mammography (SFM) and full-field digital mammography (FFDM) units.

Analysis of plain X-ray and low resolution CT gonad dose arising from supplementary imaging after bone scanning (2011)
Journal Article
Kelly, J., Szczepura, K., Hogg, P., & Tootell, A. (2011). Analysis of plain X-ray and low resolution CT gonad dose arising from supplementary imaging after bone scanning. European Journal of Nuclear Medicine and Molecular Imaging, 38(Sup. 2), S445. https://doi.org/10.1007/s00259-011-1913-y

Introduction:Bone scintigraphy has long been the first stop for patients undergoing investigation of bone metastases. The procedure is recognised as being highly sensitive to the disease however this corresponds to a low specificity. As a result s... Read More about Analysis of plain X-ray and low resolution CT gonad dose arising from supplementary imaging after bone scanning.