HBO Kennisbank

21 Resultaten

Sorteer op:

ECG-getriggerd scannen bij CT pulmonaire angiografie

Renee Hulst (Student); Aukje Knijff (Student); R. P. J. van der Wee (Begeleider)

Longembolieën zijn veelvoorkomend in Nederland. De gouden standaard voor het diagnosticeren is computertomografie pulmonaire angiografie (CTPA). Het streven is hoge beeldkwaliteit te behalen met zo laag mogelijke stralingsdosis en contrastdosis. Bij CTPA kan de beeldkwaliteit negatief worden beïnvloed …

2019-05-31GezondheidBachelor

CT determined psoas muscle area predicts mortality in women undergoing transcatheter aortic valve implantation

van Mourik, Martijn S.; Janmaat, Yvonne C.; van Kesteren, Floortje; Vendrik, Jeroen; Planken, R. Nils; Henstra, Marieke J.; Velu, Juliëtte F.; Vlastra, Wieneke; Zwinderman, Aeilko H.; Koch, Karel T.; de Winter, Robbert J.; Wykrzykowska, Joanna J.; Piek, Jan J.; Henriques, José P.S.; Lanting, Vincent R.; Baan, Jan; Latour, Corine (Urban Vitality); Lindeboom, Robert; Vis, M. Marije

Objectives: The aim of this study was to assess the predictive value of PMA measurement for mortality. Background: Current surgical risk stratification have limited predictive value in the transcatheter aortic valve implantation (TAVI) population. In TAVI workup, a CT scan is routinely performed but …

2019-03-01AlgemeenAndersoortig materiaal

Radiation protection in pediatric radiology

Harmen Bijwaard (Lector); Doreth Valk; Ischa de Waard-Schalkx

Abstract—A survey about radiation protection in pediatric radiology was conducted among 22 general and seven children’s hospitals in the Netherlands. Questions concerned, for example, child protocols used for CT, fluoroscopy and x-ray imaging, number of images and scans made, radiation doses and measures …

2016-10-01GezondheidArtikel

Substantial CT radiation dose reduction does not affect the preference for CT over direct digital radiography to diagnose isolated zygomatic fractures

Meijer, Annemieke; Rozema, R.; Hartman, R.; van der Duim, S.; van Minnen, B.; Krijnen, Wim (Statistical Techniques For Applied Research); de Groot, Martijn

Introduction: Zygomatic fractures can be diagnosed with either computed tomography (CT) or direct digital radiography (DR). The aim of the present study was to assess the effect of CT dose reduction on the preference for facial CT versus DR for accurate diagnosis of isolated zygomatic fractures. Materials …

2016-09-28Gezondheid; …Artikel

Skeletal muscle quality as assessed by CT-derived skeletal muscle density is associated with 6-month mortality in mechanically ventilated critically ill patients

Looijaard, Wilhelmus G.P.M.; Dekker, Ingeborg M.; Stapel, Sandra N.; Girbes, Armand R.J.; Twisk, Jos W.R.; Oudemans-van Straaten, Heleen M.; Weijs, Peter J.M. (Lectoraat Voeding En Beweging)

BACKGROUND: Muscle quantity at intensive care unit (ICU) admission has been independently associated with mortality. In addition to quantity, muscle quality may be important for survival. Muscle quality is influenced by fatty infiltration or myosteatosis, which can be assessed on computed tomography …

2016AlgemeenArtikel

Evaluation of bioelectrical impedance analysis in critically Ill patients

Kuchnia, Adam; Earthman, Carrie; Teigen, Levi; Cole, Abigail; Mourtzakis, Marina; Paris, Michael; Looijaard, Willem; Weijs, Peter (Lectoraat Voeding En Beweging); Oudemans-van Straaten, Heleen; Beilman, Gregory; Day, Andrew; Leung, Roger; Compher, Charlene; Dhaliwal, Rupinder; Peterson, Sarah; Roosevelt, Hannah; Heyland, Daren K

BACKGROUND: In critically ill patients, muscle loss is associated with adverse outcomes. Raw bioelectrical impedance analysis (BIA) parameters (eg, phase angle [PA] and impedance ratio [IR]) have received attention as potential markers of muscularity, nutrition status, and clinical outcomes. Our objective …

2016AlgemeenArtikel

Automated Generation of Pelvic CT-based DRR’s

Alexander H.I.P.R. Hustinx (Student); Esther van der Stappen (Begeleider)

In this thesis the research on the automatic constructing of intelligible digitally reconstructed radiographs (DRR’s) of the hips is described. This project was initialized when the Department of Orthopedic surgery, within UMC Utrecht, decided to research the relation between spinopelvic parameters and …

2015-10-18ICT & MediaBachelor

Research article – A comparison of Sinogram Affirmed Iterative Reconstruction and filtered back projection on image quality and dose reduction in paediatric head CT: a phantom study

Bakker, Astrid; de Lange, René; Ahmed, Abdulfatah; Garcia, André; Tomkinson, David; Salamin, Julie; Buyvidovich, Sergey A.; Sohrabi, Tina; Dominguez, Alexandre; Campeanu, Cosmin

Background: Computed tomography (CT) is one of the most used modalities for diagnostics in paediatric populations, which is a concern as it also delivers a high patient dose. Research has focused on developing computer algorithms that provide better image quality at lower dose. The iterative reconstruction …

2015AlgemeenConferentiebijdrage

Review article – The impact of Sinogram-Affirmed Iterative Reconstruction on patient dose and image quality compared to filtered back projection: a narrative review

Plasman, Paul; Bakker, Astrid; de Lange, René; Ahmed, Abdulfatah; Garcia, André; Tomkinson, David; Salamin, Julie; Buyvidovich, Sergey A.; Dominguez, Alexandre; Campeanu, Cosmin; Sohrabi, Tina

Objective: Summarize all relevant findings in published literature regarding the potential dose reduction related to image quality using Sinogram-Affirmed Iterative Reconstruction (SAFIRE) compared to Filtered Back Projection (FBP). Background: Computed Tomography (CT) is one of the most used radiographic …

2015AlgemeenConferentiebijdrage

Review article – X Radiation dose implications in screening patients with ferromagnetic IOFBs prior to MRI: a literary review

Abbas, Samara; Jessop, Sarah; Hart, Gabrielle; Santiago, Ana Rita; Markali, Benedicte; Cottier, Yann; Guerreiro, Joana; Andersen, Erik Normann; Momoniat, H.; Jorge, José; England, Andrew

Patients scheduled for a magnetic resonance imaging (MRI) scan sometimes require screening for ferromagnetic Intra Orbital Foreign Bodies (IOFBs). To assess this, they are required to fill out a screening protocol questionnaire before their scan. If it is established that a patient is at high risk, radiographic …

2015AlgemeenConferentiebijdrage

1 2 3

Over HBO Kennisbank