All Outputs (149)

A mammography image set for research purposes using BI-RADS density classification (2014)
Journal Article
Mercer, C., Hogg, P., Kelly, J., Borgan, R., Millington, S., Hilton, B., …Wheelan, P. (2014). A mammography image set for research purposes using BI-RADS density classification. Radiologic technology, 85(6), 609-613

Purpose Breast density categorization consistency is important when performing research, and minimization of interoperator and intraoperator variability is essential. This research aimed to validate a set of mammography images for visual breast den... Read More about A mammography image set for research purposes using BI-RADS density classification.

A method to investigate image blurring due to mammography machine compression paddle movement (2014)
Journal Article
Wang, M., Hogg, P., Kelly, J., & Millington, S. (2015). A method to investigate image blurring due to mammography machine compression paddle movement. Radiography, 21(1), 36-41. https://doi.org/10.1016/j.radi.2014.06.004

Background Compression paddles can move during mammography exposures. Speculation suggests that this movement can cause image blurring. No research has been published to demonstrate whether such movement could cause image blurring. Aim Devel... Read More about A method to investigate image blurring due to mammography machine compression paddle movement.

Increasing source to image distance for AP pelvis imaging – impact on radiation dose and image quality (2014)
Journal Article
Tugwell, E., Everton, C., Kingma, A., & Hogg, P. (2014). Increasing source to image distance for AP pelvis imaging – impact on radiation dose and image quality. Radiography, 20(4), 351-355. https://doi.org/10.1016/j.radi.2014.05.012

Aim: A quantative primary study to determine whether increasing source to image distance (SID), with and without the use of automatic exposure control (AEC) for antero-posterior (AP) pelvis imaging, reduces dose whilst still producing an image of d... Read More about Increasing source to image distance for AP pelvis imaging – impact on radiation dose and image quality.

Image quality and dose analysis for a PA chest X-ray: Comparison between AEC mode acquisition and manual mode using the 10 kVp ‘rule’ (2014)
Journal Article
Reis, C., Gonçalves, J., Klompmaker, C., Bárbara, A., Bloor, C., Hegarty, R., …Hogg, P. (2014). Image quality and dose analysis for a PA chest X-ray: Comparison between AEC mode acquisition and manual mode using the 10 kVp ‘rule’. Radiography, 20(4), 339-345. https://doi.org/10.1016/j.radi.2014.06.001

Purpose To compare the image quality and effective dose applying the 10 kVp rule with manual mode acquisition and AEC mode in PA chest X-ray. Method 68 images (with and without lesions) were acquired using an anthropomorphic chest phantom us... Read More about Image quality and dose analysis for a PA chest X-ray: Comparison between AEC mode acquisition and manual mode using the 10 kVp ‘rule’.

Compression force behaviours : an exploration of the beliefs and values influencing the application of breast compression during screening mammography (2014)
Journal Article
Murphy, F., Nightingale, J., Hogg, P., Robinson, L., Seddon, D., & Mackay, S. (2015). Compression force behaviours : an exploration of the beliefs and values influencing the application of breast compression during screening mammography. Radiography, 21(1), 30-35. https://doi.org/10.1016/j.radi.2014.05.009

This research project investigated the compression behaviours of practitioners during screening mammography. The study sought to provide a qualitative understanding of ‘how’ and ‘why’ practitioners apply compression force. With a clear conflict in t... Read More about Compression force behaviours : an exploration of the beliefs and values influencing the application of breast compression during screening mammography.

Analysing data from observer studies in medical imaging research : An introductory guide to free-response techniques (2014)
Journal Article
Thompson, J., Manning, D., & Hogg, P. (2014). Analysing data from observer studies in medical imaging research : An introductory guide to free-response techniques. Radiography, 20(4), 295-299. https://doi.org/10.1016/j.radi.2014.04.005

Observer performance methods maintain their place in radiology research, particularly in the assessment of the diagnostic accuracy of new and existing techniques, despite not being fully embraced by the wider audience in medical imaging. The receiv... Read More about Analysing data from observer studies in medical imaging research : An introductory guide to free-response techniques.

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.

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.

10 kVp rule - an anthropomorphic pelvis phantom imaging study using a CR system : impact on image quality and effective dose using AEC and manual mode (2014)
Journal Article
Lanca, L., Franco, L., Ahmed, A., & Hogg, P. (2014). 10 kVp rule - an anthropomorphic pelvis phantom imaging study using a CR system : impact on image quality and effective dose using AEC and manual mode. Radiography, 20(4), 333-338. https://doi.org/10.1016/j.radi.2014.04.007

Purpose: This study aims to investigate the influence of tube potential (kVp) variation in relation to perceptual image quality and effective dose for pelvis using automatic exposure control (AEC) and non-AEC in a Computed Radiography (CR) system. M... Read More about 10 kVp rule - an anthropomorphic pelvis phantom imaging study using a CR system : impact on image quality and effective dose using AEC and manual mode.

Developing and validating a psychometric scale for image quality assessment (2014)
Journal Article
Mraity, H., England, A., & Hogg, P. (2014). Developing and validating a psychometric scale for image quality assessment. Radiography, 20(4), 306-311. https://doi.org/10.1016/j.radi.2014.04.002

Purpose Using AP pelvis as a catalyst, this paper explains how a psychometric scale for image quality assessment can be created using Bandura's theory for self-efficacy. Background Establishing an accurate diagnosis is highly dependent upon... Read More about Developing and validating a psychometric scale for image quality assessment.

Effects of kilovoltage, milliampere seconds, and focal spot size on image quality (2014)
Journal Article
Ma, W., Norton, S., & Hogg, P. (2014). Effects of kilovoltage, milliampere seconds, and focal spot size on image quality. Radiologic technology, 85(5), 479-485

Purpose To determine how kilovoltage (kV), milliampere seconds (mAs), and focal spot size affect perceptual image quality using a hand phantom. Methods Using computed radiography, 70 images of a posteroanterior (PA) oblique hand phantom were acquir... Read More about Effects of kilovoltage, milliampere seconds, and focal spot size on image quality.

Development and validation of a psychometric scale for assessing PA chest image quality : A pilot study (2014)
Journal Article
Mriaty, H., England, A., Akhtar, I., Aslam, A., De Lange, R., Momoniat, H., …Hogg, P. (2014). Development and validation of a psychometric scale for assessing PA chest image quality : A pilot study. Radiography, 20(4), 312-317. https://doi.org/10.1016/j.radi.2014.03.007

Purpose: To develop and validate a psychometric scale for assessing image quality perception for chest X-ray images. Methods: Bandura's theory was used to guide scale development. A review of the literature was undertaken to identify items/factors... Read More about Development and validation of a psychometric scale for assessing PA chest image quality : A pilot 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.

Integrating research-informed teaching within an undergraduate diagnostic radiography curriculum : Results from a level 4 (year 1) student cohort (2014)
Journal Article
Higgins, R., Robinson, L., & Hogg, P. (2014). Integrating research-informed teaching within an undergraduate diagnostic radiography curriculum : Results from a level 4 (year 1) student cohort. Radiography, 20(2), 100-106. https://doi.org/10.1016/j.radi.2014.02.002

Aim Previously we reported on focus group research which explored the level 4 (year 1) student experience of the Research-informed Teaching experience (RiTe). This article discusses follow up research with a new student cohort. Method An online... Read More about Integrating research-informed teaching within an undergraduate diagnostic radiography curriculum : Results from a level 4 (year 1) student cohort.

A systematic procedure to optimise dose and image quality for the measurement of inter-vertebral angles from lateral spinal projections using Cobb and superimposition methods (2014)
Journal Article
Al Qaroot, B., Hogg, P., Twiste, M., & Howard, D. (2014). A systematic procedure to optimise dose and image quality for the measurement of inter-vertebral angles from lateral spinal projections using Cobb and superimposition methods. Journal of X-Ray Science and Technology, 22(5), 613-625. https://doi.org/10.3233/XST-140449

BACKGROUND: Patients with vertebral column deformations are exposed to high risks associated with ionising radiation exposure. Risks are further increased due to the serial X-ray images that are needed to measure and asses their spinal deformation us... Read More about A systematic procedure to optimise dose and image quality for the measurement of inter-vertebral angles from lateral spinal projections using Cobb and superimposition methods.

Anthropomorphic chest phantom imaging the potential for dose creep in computed radiography (2013)
Journal Article
creep in computed radiography. Radiography, 19(3), 207-211. https://doi.org/10.1016/j.radi.2013.04.002

For film-based radiography the operator had to be exact in the selection of acquisition parameters or the image could easily become under- or over-exposed. By contrast, digital technology allows for a much greater tolerance of acquisition factor se... Read More about Anthropomorphic chest phantom imaging the potential for dose creep in computed radiography.

The power and the pain : mammographic compression research from the service-users’ perspective (2013)
Journal Article
Robinson, L., Hogg, P., & Newton-Hughes, A. (2013). The power and the pain : mammographic compression research from the service-users’ perspective. Radiography, 19(3), 190-195. https://doi.org/10.1016/j.radi.2013.04.005

Purpose: to explore the value service-users can add to our understanding of inter-practitioner compression variability in mammography. Imaging of the breast for the screening and detection of breast carcinoma is generally carried out by mammographi... Read More about The power and the pain : mammographic compression research from the service-users’ perspective.

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.

Does an increase in compression force really improve visual image quality in mammography? An initial investigation (2013)
Journal Article
Mercer, C., Hogg, P., Cassidy, S., & Denton, E. (2013). Does an increase in compression force really improve visual image quality in mammography? An initial investigation. Radiography, 19(4), 363-365. https://doi.org/10.1016/j.radi.2013.07.002

Objective: Literature speculates that visual image quality (IQ) and compression force levels may be directly related. This small study investigates whether a relationship exists between compression force levels and visual IQ. Method: To investiga... Read More about Does an increase in compression force really improve visual image quality in mammography? An initial investigation.