Sökning: "Ray Ben"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden Ray Ben.

  1. 1. Material decomposition using a photon counting X-ray detector in low energy range

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Rasmus Solem; [2021]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Material decomposition in X-ray imaging is used to separate different materials or elements in an image and to quantify their respective concentration. The material decomposition and quantification are made possible by the dependency of attenuation on the attenuating material and photon energy. LÄS MER

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

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Philip Stjärneblad; [2021]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  4. 3. Armbågsledsdysplasi hos växande hundar : fyra komplexa tillstånd

    Kandidat-uppsats, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Elsa Alkelin; [2018]
    Nyckelord :armbågsledsdysplasi; AD; hund; inkongruens; UPA; FCP; OCD; osteoartrit; index;

    Sammanfattning : Armbågsledsdysplasi, ED, är ett samlingsbegrepp för fyra polygena och multifaktoriella patologanatomiska tillstånd. De ledsjukdomar som ingår i begreppet är inkongruens, ununited processus anconeus (UPA), fragmented medial coronoid process (FMCP) och osteochondrosis dissecans (OCD). LÄS MER

  5. 4. Jakten på benen : Experimentell undersökning av geokemiska förändringar i gravar med brända ben med pXRF

    Master-uppsats, Stockholms universitet/Arkeologiska forskningslaboratoriet

    Författare :Peter Nelson; [2018]
    Nyckelord :pXRF; Experimental archaeology; Graves without any bones; Cenotaph; pXRF; Experimentell arkeologi; Gravar utan ben; Kenotaf;

    Sammanfattning : This study deals with the phenomenon of graves without any bone material combined with an application test of a portable X-Ray fluorescence detector (pXRF) instrument on simulated burial soils to see if we could get any closer understanding of this phenomenon. To test the instruments applicability on these types of conditions, an experiment was conducted with three different soil types. LÄS MER

  7. 5. Evolution of the Vascular Pattern in Mammals : Using Synchrotron Imaging to Visualise Hidden 3D Structures

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Jasper Ponstein; [2017]
    Nyckelord :Secondary ossification centres; Mammalia; vascularity; limb-bone evolution; Sekundära ossifieringscentra; däggdjur; vaskuläritet; lembensutveckling;

    Sammanfattning : The morphology and histology of long bones are important tools for understanding tetrapod locomotion and growth. In mammals, the epiphyses of long bones ossify from a secondary centre of ossification. The consensus is that vascular canals are closely tied to the formation of these centres. LÄS MER