Essays about: "röntgen."

Showing result 11 - 15 of 96 essays containing the word röntgen..

  1. 11. A Comparative Study on the effect of different hyperparameters on the performance of VGGNet-16 for detection of Cardiomegaly in Chest X-ray Images

    University essay from KTH/Datavetenskap

    Author : Ouday Ahmed; Oliver Lindblad; [2022]
    Keywords : ;

    Abstract : Computer aided diagnostics (CAD) systems have been widely researched and used in the medical field since it was introduced in the 1960s. The system functions as a support for radiologists in medical examinations using imaging technology such as X-rays, MRI and CT scans to diagnose diseases and treat injuries. READ MORE

  3. 12. 2D & 3D phase retrieval for propagation-based X-ray phase-contrast tomography

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Philip Stjärneblad; [2021]
    Keywords : Propagation-based X-ray phase-contrast tomography; PB-PCT; Propagation-based X-ray phase-contrast Imaging; PB-PCI; 2d phase retrieval; 3d phase retrieval; TIE; sinogram consistency; reconstruction artefacts; Science General;

    Abstract : Propagation-based X-ray phase-contrast tomography is a 3d imaging technique that utilizes two-dimensional projections from different angular views $\theta =[0,\pi]$ to reconstruct the 3D object information. The phase-contrast allows for higher feature contrast than conventional transmission tomography, as the phase interference gives rise to a sharp edge contrast. READ MORE

  4. 13. Frontier materials at the air-liquid interface: Self-assembly of green ionic liquids

    University essay from KTH/Yt- och korrosionsvetenskap

    Author : Ulrika Karlson; Morgan Ölander; Fernando Zevallos; [2021]
    Keywords : Ionic liquids; Green chemistry; X-ray reflectivity; AIR-liquid interface; Self assembly; Jonvätskor; Grön kemi; Självorganisation;

    Abstract : The interfacial structuring of three non-halogenated ionic liquids was examined at the air-liquid interface for both dry and humid condition by analysis of X-ray reflectometry data using a slab model approach. The aim was to investigate the effect of humidity on the air-liquid interface. READ MORE

  5. 14. Bearbetning av digitala röntgenbilder : en enkätstudie i hur olika bearbetningar påverkar bedömningen av knäledsröntgen på hund och katt

    University essay from SLU/Dept. of Clinical Sciences

    Author : Mia Hedlund; [2021]
    Keywords : digitala röntgenbilder; bearbetning; kantförstärkning; knäled; hund; katt;

    Abstract : Röntgen används dagligen i den veterinärmedicinska kliniken och är ett mycket användbart diagnostiskt verktyg. I dagsläget existerar röntgensystem där användaren har stora möjligheter att bearbeta den digitala röntgenbilden på olika sätt och på det viset skapa röntgenbilder med olika utseenden. READ MORE

  6. 15. Characterization of Radiomics Features Extracted from Images Generated by the 0.35 T Scanner of an Integrated MRI-Linac

    University essay from Lunds universitet/Sjukhusfysikerutbildningen

    Author : Rebecka Ericsson Szecsenyi; [2020]
    Keywords : Medicine and Health Sciences;

    Abstract : Purpose: In an era of personalized oncology where the aim is to give every patient the right treatment at the right time an area of promising research is emerging called radiomics, or quantitative image analysis. The main underlying hypothesis is that pathophysiological information can be found in image texture not visible to the bare eye that can improve diagnosis, treatment adaption or be linked to a certain clinical outcome. READ MORE