Blar i ODA Open Digital Archive på forfatter "Hogg, Peter"

Viser treff 1-10 av 10

    • An analysis of the validity and reliability of handheld ultrasound device for measuring rectus femoris muscle size 

      Nijholt, Willemke; Bakker, Astrid; Bennett, Alicia; Borgen, Morten Højsgård; Ellermann, Anne; Hogg, Peter; Gamboa, Patrícia; Thorskog, Martine; Vorster, Liesl; Aandahl, Ingrid-Jannicke (Peer reviewed; Chapter, 2016)
      Background: Previous studies show that ultrasound is valid and reliable when measuring muscle size. A Philips handheld ultrasound device was released in April 2015. The aim of this study was to investigate the validity ...

    • Are physical measures good indicators of image quality at low dose levels? A pilot study 

      Lança, Luis; Andersen, Erik Normann; Carvalho, G.; von Gerwen, M.; Jorge, Jose; Kleiker, M.; Markali, Benedicte; Nightingale, P.; Hogg, Peter (Chapter; Peer reviewed, 2016)
      Purpose: To evaluate if physical measures of noise predict image quality at high and low noise levels. Method: Twenty-four images were acquired on a DR system using a Pehamed DIGRAD phantom ...

    • Breast compression across consecutive examinations among females participating in BreastScreen Norway 

      Wåde, Gunvor Gipling; Sebuødegård, Sofie; Hogg, Peter; Hofvind, Solveig (British Journal of Radiology;Volume 91, Issue 1090, Journal article; Peer reviewed, 2018-07-13)
      Objective: Breast compression is used in mammography to improve image quality and reduce radiation dose. However, optimal values for compression force are not known, and studies have found large variation in use of compression ...

    • Compression forces used in the Norwegian Breast Cancer Screening Program 

      Wåde, Gunvor Gipling; Moshina, Nataliia; Sebuødegård, Sofie; Hogg, Peter; Hofvind, Solveig (Journal article; Peer reviewed, 2017)
      Objective: Compression is used in mammography to reduce breast thickness, which is claimed to improve image quality and reduce radiation dose. In the Norwegian Breast Cancer Screening Program (NBCSP), the recommended ...

    • Construction and validation of a low cost paediatric pelvis phantom 

      Johansen, Safora; Hogg, Peter; Mohammad Ali, Ali; England, Andrew (European Journal of Radiology;Volume 108, November 2018, Journal article; Peer reviewed, 2018-09-14)
      PURPOSE: Imaging phantoms can be cost prohibitive, therefore a need exists to produce low cost alternatives which are fit for purpose. This paper describes the development and validation of a low cost paediatric pelvis ...

    • The impact of pitch values on image quality and radiation dose in an abdominal adult phantom using CT 

      Lança, Luis; Barros, Pietro; Løvlien, Ine M.; Derech, Rodrigo D’Agostini; Higgins, Daniel; Kleiker, Marjolein; McNally, Kevin; Thevenaz, Manon; Hogg, Peter; Liardet, Sebastien (Chapter; Peer reviewed, 2017)
      Purpose: To identify the impact of different pitch values on image quality and effective radiation dose for axial and coronal plane in abdominal adult CT. Methods and materials: Three scans were conducted on an abdominal ...

    • Impact of the anode heel effect on image quality and effective dose for AP pelvis: a pilot study 

      Buissink, Carst; Bowdler, Matt; Abdullah, A; Al-Murshedi, S; Custódio, S; Huhn, Andrea; Jorge, Jose; Ali, Mohammed; Peters, Annastagia Lily; Robin, Rey Yohan; Urdahl, Therese Kristin; Hogg, Peter (Chapter; Peer reviewed, 2017)
      Purpose: Using phantoms, this pilot study aims to outline a method and generate initial data to determine whether the anode heel effect has an impact on image quality and the effective dose. Methods and Materials: A ...

    • Lesion detection performance : comparative analysis of low-dose CT data of the chest on two hybrid imaging systems 

      Jessop, Maryam; Thompson, John D.; Sil, Joanne; Sanderud, Audun; Jorge, Jose; De groot, Martin; Lança, Luis; Hogg, Peter (Journal of Nuclear Medicine Technology;(Under utgivelse), Journal article; Peer reviewed, 2015)
      Purpose: Incidental findings, discovered in low-dose CT images obtained during hybrid imaging, are an increasing phenomenon with advancing CT technology. Understanding their diagnostic value along with technical limitations ...

    • The readout thickness versus the measured thickness for a range of screen film mammography and full-field digital mammography units 

      Hauge, Ingrid Helen Ryste; Hogg, Peter; Szczepura, Katy; Connolly, Paul; McGill, George; Mercer, Claire (Medical physics (Lancaster);39 (1), Journal article; Peer reviewed, 2011-12-20)
      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 ...

    • The Influence of CT Reconstruction Methods on the Accuracy of Monitoring Lung Nodule Diameters at Different Dose Levels 

      Plasman, Paul; Baxter, H.; Coleman, L.; Hogg, Peter; Hustveit, Hanne; Rizvi, A.; van der Sluis, L.G.; Telle, Christina; Zigterman, J. (Chapter; Peer reviewed; Chapter, 2016)
      Purpose: This study aims to investigate the effect of filtered back projection (FBP) and sinogram-affirmed iterative reconstruction (SAFIRE) on the accuracy of lung nodule diameter measurements at different dose ...