Blar i HV - Institutt for naturvitenskapelige helsefag på dokumenttype "Chapter"

Viser treff 1-20 av 20

    • 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 ...

    • Analysis of image quality and effective dose in adult chest phantom radiography with high BMI. 

      Sanderud, Audun; Aymon, Emmanuel; Burke, Andrea M.; Dijkstra, Susanne; Fosskaug, Julie; Silva, Andreia; Soares, Flavio Augusto (OPTIMAX 2017: Radiation dose, image quality optimisation, the use of new technology in medical imaging;, Chapter; Peer reviewed, 2018)
      Aim: To investigate the impact of different kVp and mAs values on effective dose and image quality using a chest phantom that simulates a normal sized and an obese patient. Methods and materials: A chest phantom with ...

    • 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 ...

    • Automatic Unsupervised Clustering of Videos of the Intracytoplasmic Sperm Injection (ICSI) Procedure 

      Storås, Andrea; Riegler, Michael Alexander; Haugen, Trine B.; Thambawita, Vajira L B; Hicks, Steven Alexander; Hammer, Hugo Lewi; Kakulavarapu, Radhika; Halvorsen, Pål; Stensen, Mette Haug (Chapter; Conference object, 2023)
      The in vitro fertilization procedure called intracytoplasmic sperm injection can be used to help fertilize an egg by injecting a single sperm cell directly into the cytoplasm of the egg. In order to evaluate, refine and ...

    • Disiplinfagenes plass i profesjonsutdanningene 

      Haugen, Trine B. (Peer reviewed; Chapter, 2011)

    • Electrical pulse stimulation of primary human skeletal muscle cells 

      Nikolic, Natasa; Aas, Vigdis (Methods in molecular biology;MIMB, volume 1889, Chapter; Journal article; Peer reviewed, 2018-10-27)
      Electrical pulse stimulation (EPS) is an in vitro method of inducing contractions in cultured skeletal muscle cells of human and animal origin. Motor neuron activation of muscle fibres can be replaced by applying EPS on ...

    • Epigenetics of Migraine 

      Gazerani, Parisa (Chapter; Peer reviewed, 2023)
      Genetics and the environment have both been demonstrated to take part in the pathogenesis of migraine. Studying the epigenetic mechanisms underlying migraine can facilitate the understanding of the disorder, its chronification, ...

    • Experimental article Maintaining image quality for paediatric chest CTs while lowering dose: FBP versus SAFIRE 

      Borge, Synnøve Devik; Campbell, Nina; Gomes, Ana; Raszkowski, Aysha Malgorzata; Rook, Jan Willem; Sanderud, Audun; Vallinga, Anique; Vouillamoz, Audrey; Buissink, Carst (Peer reviewed; Chapter, 2015)
      Objectives: Children have a greater risk from radiation, per unit dose, due to increased radiosensitivity and longer life expectancies. It is of paramount importance to reduce the radiation dose received by children. This ...

    • The impact of operator training on the accuracy of DXA lumbar spine analysis 

      McDermott, Eilish; Dutruit, Y.; Jeanneret-Grosjean, C; Koen, K; McPhilomy, C; Snelders, F; Stensrud, Kristin; Tcacenco, A; Aandahl, Ingrid-Jannicke (OPTIMAX 2018 - a focus on education in radiology;, Chapter; Peer reviewed, 2019)
      Introduction: This study involving Dual-energy X-ray Absorptiometry (DXA) spine images investigated the effectiveness of an additional training session compared to basic instruction provided by the scanner manufacturer ...

    • 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 ...

    • Mapping University Skills labs in Radiography: Students’ Perspectives 

      Cronin, Kevin; Fitzgerald, Jack; Gillard, Morgane; Ghotra, Switinder Singh; Kieft, Iris; Reynolds, Orna; Sanderud, Audun; Sekkelsten, Henrik; Hårsaker, Vanja (OPTIMAX 2018 - a focus on education in radiology;, Chapter; Peer reviewed, 2019)
      Background: Establishing an effective theory and practice relationship is necessary for every radiography student. The effectiveness of a Skills Lab is paramount to ensure that student radiographers are prepared for ...

    • Optimisation of chest Computed Tomography using a phantom: impact of mAs and reconstruction techniques on Image Quality 

      Reis, Cláudia; Hårsaker, Vanja; Faqir, T; Kristoffersen, Linn; van Rein, I.; Stancombe, K; Warmerdam, N.C.; Wergeland, Christine (Chapter; Peer reviewed; Chapter, 2016)
      Objectives: To verify if the mAs and reconstruction techniques affect the visualisation of relevant structures in lung Computed Tomography (CT) using a phantom. Methods: Images were acquired using various mAs and ...

    • Review Article An evaluation of SAFIRE s potential to reduce the dose received by paediatric patients undergoing CT: a narrative review 

      Borge, Synnøve Devik; Campbell, Nina; Gomes, Ana; Raszkowski, Aysha Malgorzata; Rook, Jan willem; Sanderud, Audun; Vallinga, Anique; Vouillamoz, Audrey; Buissink, Carst (Peer reviewed; Chapter, 2015-04-24)
      Introduction: The purpose of this review is to gather and analyse current research publications to evaluate Sinogram-Affirmed Iterative Reconstruction (SAFIRE). The aim of this review is to investigate whether this ...

    • A Salutogenic Approach for Collaboration in Health and Technology 

      Berg, Arild Skarsfjord; Johansen, Safora; Lund, Anne; Riegler, Michael; Andersen, Jorunn Marie (Chapter, 2023)
      Through collaboration, health services and health-promoting environments can be influenced by patients, health professionals, and stakeholders. Antonovsky’s concept of salutogenesis includes the promotion of a sense of ...

    • 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 ...

    • The Influence of Source-to-Image Distance on Effective Dose and Image Quality for Mobile Chest X-ray Imaging 

      Hauge, Ingrid Helen Ryste; Beecher, Donal; Ellermann, Anne; Hughan, Sophi; Nguyen, Thi; Parrone, Luca; Selboe, Silje; Soares, Flavio augusto; Van Wijngaarden, Stephan; Sanderud, Audun (Chapter; Peer reviewed, 2017)
      Aim: To investigate the effect of source-to-image distance (SID) on effective dose and image quality at a fixed mAs. Furthermore, to determine whether effective dose varies as SID is varied after compensating mAs for ...

    • The reliability and validity of detecting low dose radiation when using radiation detection applications and devices for smartphones. 

      Erenstein, Hendrik G.; Chamberlain, Libby D.; Forsten, Aniek; Lamprecht, Anna E.D.; Sohrabi, Tina; Thomassen, Emilie; van der Wala, Suzanne C.M..; Werner, Maria; Sanderud, Audun (Chapter; Peer reviewed; Chapter, 2016)
      Introduction: Recent studies have stated that the use of real time dosimeters decreases occupational dose. Since 2015, 54.9% of the European population carries a smartphone and new technology gives us the opportunity to ...

    • Ultrasound assessment of muscle thickness and muscle crosssectional area: a reliability study 

      Nijholt, W.; Aandahl, Ingrid Jannicke; Adajar, G.; Borgen, Morten Højsgård; Carreiras, I.; Rab, A.; Totland, Heidi; Warmerdam, N.C.; van der Wal, S.C.M.; Crofts, G. (Chapter; Peer reviewed, 2017)
      Purpose: Previous studies showed that ultrasound imaging is reliable when measuring the cross-sectional area (CSA) of a muscle. However, measurements of muscles could be affected by the level of experience of the observer. ...

    • VISEM: A Multimodal Video Dataset of Human Spermatozoa 

      Haugen, Trine B.; Hicks, Steven; Andersen, Jorunn Marie; Witczak, Oliwia; Hammer, Hugo Lewi; Borgli, Rune Johan; Halvorsen, Pål; Riegler, Michael (ACM MMSys conference series;, Chapter; Peer reviewed, 2019)
      Real multimedia datasets that contain more than just images or text are rare. Even more so are open multimedia datasets in medicine. Often, clinically related datasets only consist of image or videos. In this paper, we ...