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A blood-perfusion flowmeter
Includes bibliographical references.
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| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Electrical Engineering
2015
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| _version_ | 1867614504687239168 |
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| access_status_str | Open Access |
| author | Hughes, Timothy John |
| author_browse | Hughes, Timothy John |
| author_facet | Hughes, Timothy John |
| author_sort | Hughes, Timothy John |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/12437 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:53:06.068Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Department of Electrical Engineering |
| publisherStr | Department of Electrical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/12437 A blood-perfusion flowmeter Hughes, Timothy John Electrical Engineering Includes bibliographical references. A variety of methods have been used for measuring blood flow in large vessels. However, almost all of these methods are unsuitable for measuring perfusion flow in tissue. Basically all attempts at perfusion flow measurement have used either a tracer method (radio-active dyes, microspheres) or a thermal method where the rate of heat clearance from a heated probe is used as a measure of local flow. Tracer methods suffer from the fact that they give essentially a single measurement of flow and this only after tissue has been removed and analysed. Thermal methods on the other hand can give continuous measurement. What is actually being measured in the thermal method is the apparent thermal conductivity of the tissue in the immediate vicinity of the probe. The apparent thermal conductivity increases with flow as heat from the probe is not only conducted away by the surrounding tissue but is also carried away by the perfusing fluid. The way in which local perfusion is related to thermal conductivity and the methods used to measure thermal conductivity have led to criticisms of thermal methods. This work deals with instrumentation to eliminate some sources of error in thermal methods and automate the whole measurement procedure. It also includes a critical review of thermal methods in general and previous work in the field in particular. 2015-02-11T14:08:49Z 2015-02-11T14:08:49Z 1975 Master Thesis Masters MSc http://hdl.handle.net/11427/12437 eng application/pdf Department of Electrical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Electrical Engineering Hughes, Timothy John A blood-perfusion flowmeter |
| thesis_degree_str | Master's |
| title | A blood-perfusion flowmeter |
| title_full | A blood-perfusion flowmeter |
| title_fullStr | A blood-perfusion flowmeter |
| title_full_unstemmed | A blood-perfusion flowmeter |
| title_short | A blood-perfusion flowmeter |
| title_sort | blood perfusion flowmeter |
| topic | Electrical Engineering |
| url | http://hdl.handle.net/11427/12437 |
| work_keys_str_mv | AT hughestimothyjohn abloodperfusionflowmeter AT hughestimothyjohn bloodperfusionflowmeter |