Sökning: "Non-invasive techniques"

Visar resultat 21 - 25 av 135 avhandlingar innehållade orden Non-invasive techniques.

1. 21. Development of visible spectroscopic techniques for applications in plasma diagnostics

   Författare :Katarzyna Jakubowska; Elisabeth Rachlew-Källne; Per Brusell; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

   Sammanfattning : In this thesis visible spectroscopy is developed and used for two applications. Studies of motional Stark effect spectra for diagnosing the current distribution in the fusion plasmas with two different spectroscopic diagnostic systems: ratiometry and interferometry. LÄS MER

3. 22. Cross-modal Imaging in Lung Research: From µCT dosimetry to synchrotron phase contrast microtomography biomechanical insights in preclinical lung injury models

   Författare :Richard Deyhle Jr; Malmö Medicinsk strålningsfysik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Thermoluminescent Dosimetry; Optically stimulated luminescence OSL ; Computed tomography CT ; 4DCT; Phantoms; Imaging; X-rays; pre-clinical models; Pre-clinical; dosimetry: physical basis; biomedical strain; lung injury; mechanical ventilation; inflammation; lung function; synchrotron; histology; acute respiratory distress syndrome ARDS ; Ventilator Inudced Lung Injury VILI ; Histology; Forced Oscillation Technique FOT ; Divergence Theorem; Registration techniques;

   Sammanfattning : Lung diseases continue to present a large burden to public health, especially in industrialized countries. For abetter understanding of the underlying patho-mechanisms in lung related diseases as well as for testing theefficacy of novel therapies, preclinical studies in animal models are indispensable. LÄS MER

4. 23. Aspects on in vivo imaging techniques for diagnostics of pigmented skin lesions

   Författare :Karin Terstappen; Göteborgs universitet; []
   Nyckelord :Melanoma; pigmented nevi; basal cell carcinoma; differential diagnosis; dermoscopy; spectrophotometric intracutaneous analysis; pathology;

   Sammanfattning : Abstract Problem: Non-invasive diagnostic techniques to facilitate diagnosis of pigmented skin lesions (PSL) are being developed. Dermoscopy and SIAscopy are two such techniques, and they are evaluated in this thesis. LÄS MER

5. 24. Urodynamic modelling and measurement techniques for assessment of urethral function during micturition

   Författare :Heikki Teriö; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : According to Griffiths' theory of flow through elastic tubes the urinary flow is controlled by an elastic constriction. The mechanical properties of this flow-controlling zone are described by the intrinsic urethral pressure as a function of cross-sectional area given by the pressure/area relation p(A)=pmo + KnAn, where pmo is the minimal urethral opening pressure, A the cross-sectional area and Kn and n are parameters describing the distensibility of this zone. LÄS MER

7. 25. Optical Analysis of biological media - continuous wave diffuse spectroscopy

   Författare :Jan Sørensen Dam; Atomfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; spatially resolved diffuse reflectance; in vitro diffuse spectroscopy; continuous wave techniques; Nuclear physics; multivariate data analysis.; Kärnfysik; Fysik; Physics; Medicin människa och djur ; Medicine human and vertebrates ; Monte Carlo simulations; light propagation models; multiple scattering; Tissue optics; tissue optical properties; Fysicumarkivet A:2000:Sörensen Dam;

   Sammanfattning : The main topic of this thesis is real-time quantification of relevant chromophores and light scattering elements in biological media. The presented methods and instrumentation are based on continuous wave (steady-state) optical measurements of (a) spatially-resolved diffuse reflectance from bulk media and (b) combined spatially-resolved and goniometric measurements of re-emitted light from thin samples. LÄS MER