Search for dissertations about: "Perfusion"

Showing result 1 - 5 of 512 swedish dissertations containing the word Perfusion.

2. 1. On perfusion estimation using ultrasound

   Author : Tomas Jansson; Avdelningen för Biomedicinsk teknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Instrumentation technology; Speckle; Artifacts; Perfusion; Ultrasound; Doppler; Mät- och instrumenteringsteknik;

   Abstract : This thesis has the main focus on ways to improve the blood perfusion estimate, as obtained from a continuous wave Doppler system. Earlier studies have shown large temporal variations in the detected perfusion estimate, due to speckle. READ MORE

4. 2. Quantitative Tracer Based MRI Perfusion : Potentials and Limitations

   Author : Arvid Morell; Atle Bjørnerud; Håkan Ahlström; Linda Knutsson; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MRI; Perfusion; Contrast agent; Relaxivity; Radiology; Radiologi;

   Abstract : Tracer based MRI perfusion measurements is a clinically useful tool to assess regional distributions of tissue blood flow and volume. The method may be based on any of the three relaxation mechanisms T1, T1 and T2*, the latter denoted DSC-MRI being the most common. READ MORE

5. 3. The effect of mechanical ventilation on abdominal organs : Analysing the role of PEEP and perfusion

   Author : Silvia Marchesi; Miklós Lipcsey; Anders Larsson; Göran Hedenstierna; Torbjörn Karlsson; Anders Oldner; Ragnvi Hagman; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; ARDS; sepsis; abdominal inflammation; edema; perfusion; Anestesiologi och intensivvård; Anaesthesiology and Intensive Care;

   Abstract : Background: The effect of mechanical ventilation on abdominal organs is not well understood and investigated yet. Previous studies, using an animal sepsis-like model, found an association between mechanical ventilation (MV) and abdominal edema and inflammation. READ MORE

6. 4. Movement artifact reduction in laser Doppler blood flowmetry : myocardial perfusion applications

   Author : MG Daniel Karlsson; Karin Wårdell; Knut Kvernebo; Linköpings universitet; []
   Keywords : MEDICINE; MEDICIN;

   Abstract : Laser Doppler perfusion monitoring (LDPM) and imaging (LDPI) enable assessment of tissue microvascular perfusion. The techniques are based on the Doppler broadening of the optical spectrum occurring when coherent laser light is scattered by moving red blood cells (RBC). READ MORE

7. 5. Tools for the development of intensified perfusion processes for mammalian cell culture

   Author : Hubert Schwarz; Véronique Chotteau; Mark Smales; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Recombinant protein biomanufacturing; Perfusion process; Integrated continuous bioprocessing; Monoclonal antibody; Erythropoietin; Chinese Hamster Ovary cells; Human Embryonic Kidney cells; Perfusion medium optimization; Cell specific perfusion rate; Raman spectroscopy; N-glycosylation; Microbioreactors; Design of Experiments; Biotechnology; Bioteknologi;

   Abstract : Recombinant protein therapeutics have become an indispensable part of modern medicine to treat a wide variety of diseases. Their manufacture is mostly based on mammalian cells with fed-batch production bioreactors and downstream batch purification unit operations. READ MORE