Sökning: "digital image reconstruction"

Visar resultat 16 - 20 av 61 avhandlingar innehållade orden digital image reconstruction.

  1. 16. Signal Reconstruction Algorithms for Time-Interleaved ADCs

    Författare :Anu Kalidas Muralidharan Pillai; Håkan Johansson; Christian Vogel; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : An analog-to-digital converter (ADC) is a key component in many electronic systems. It is used to convert analog signals to the equivalent digital form. LÄS MER

  3. 17. Separation of Water and Fat Signal in Magnetic Resonance Imaging : Advances in Methods Based on Chemical Shift

    Författare :Johan Berglund; Joel Kullberg; Lars Johansson; Håkan Ahlström; Zhi-Pei Liang; Uppsala universitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Magnetic resonance imaging; digital image reconstruction; chemical shift imaging; water and fat separation; Dixon method; fat suppression; quantitative MRI; whole-body MRI; fatty acid composition; fat unsaturation; triglycerides; adipose tissue; liver fat; T2* mapping; Radiology; Radiologi; Radiology; Radiologi;

    Sammanfattning : Magnetic resonance imaging (MRI) is one of the most important diagnostic tools of modern healthcare. The signal in medical MRI predominantly originates from water and fat molecules. LÄS MER

  4. 18. Radiological methods in rheumatoid arthritis and osteoarthritis

    Författare :Tomas Söderman; Adel Shalabi; Anders Sundin; Suzanne Werner; Marie-Louise Wretling; Seppo Koskinen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rheumatoid arthritis; Cervical spine; Radiography; Computed tomography; Magnetic resonance imaging; ACL reconstruction; Knee laxity; Long-term evaluation; Osteoarthritis; KOOS; SF-36; Tegners Activity Scale; IKDC; Quality of life; Radiology; Radiologi;

    Sammanfattning : The dissertation's theme is the critical role of radiology when evaluating two different groups of patients. Firstly, patients with rheumatoid arthritis (RA) of the cervical spine were studied to evaluate upper spine instability with dynamic computed tomography (CT). LÄS MER

  5. 19. Sequelae after Facial Palsy : Clinical, Anatomical and Electrophysiological Studies

    Författare :David Jensson; Andres Rodriguez-Lorenzo; Lars Jonsson; Göran Laurell; Sinikka Suominen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Facial palsy; Marginal mandibular paralysis; Smile reconstruction; Synkinesis; Surgery; Kirurgi;

    Sammanfattning : Background: Sequelae after peripheral facial palsy, which among others include synkinesis, non-functional smile and/or lower lip asymmetry, may be devastating for the patient. Bell’s palsy is the most common form of peripheral facial palsy. LÄS MER

  7. 20. Imaging Living Cells with an X-ray Laser

    Författare :Gijs van der Schot; Tomas Ekeberg; Janos Hajdu; Filipe Maia; Pierre Thibault; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Coherent diffractive X-ray imaging; flash X-ray imaging; lensless imaging; single particle imaging; cyanobacteria; phasing; image classification; substrate-free sample delivery; X-ray free-electron laser; XFEL; FEL; CDXI; CDI; CXI; FXI; Chemistry with specialization in Biophysics; Kemi med inriktning mot biofysik;

    Sammanfattning : Imaging living cells at a resolution higher than the resolution of optical microscopy is a significant challenge. Fluorescence microscopy can achieve a degree of super-resolution via labeling cellular components with a fluorescent dye. LÄS MER