| dc.contributor | JULIO CESAR RAMIREZ SAN JUAN | |
| dc.creator | NOEMI JASMIN SALAZAR HERMENEGILDO | |
| dc.date | 2015-11-19 | |
| dc.date.accessioned | 2018-11-19T14:25:03Z | |
| dc.date.available | 2018-11-19T14:25:03Z | |
| dc.identifier | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/51 | |
| dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/2258200 | |
| dc.description | Laser Speckle Imaging (LSI) is an optical technique used to generate blood flow maps
with high spatial and temporal resolution. A modified laser speckle imaging (mLSI) enables
computation of blood flow maps with relatively high spatial resolution. Although
it is known that the sensitivity and noise in LSI measurements depend on image exposure
time, a fundamental disadvantage of mLSI is that it does not take into account this
parameter. In this thesis, the exposure time into the mLSI method was integrated and
provides experimental support for this approach with measurements from an in vitro
flow phantom. In the other hand it is well known that in LSI, the speckle size must
exceed the Nyquist criterion to maximize the speckle’s pattern contrast. The effect of
speckle-pixel size ratio not only in dynamic speckle contrast, but also on the calculation
of the relative flow speed for temporal and spatial analysis was studied as well.
Data suggest that the temporal LSCI algorithm is more accurate at assessing the relative
changes in flow speed than the spatial algorithm. Quantify the probabilities for women
to develop breast cancer in the future or harbour breast cancer, via their bulk optical
tissue properties is the objective of the clinical research in the Ontario Cancer Institute,
Canada. As a part of this research, based on measurements of trans-illumination
spectroscopy breast tissue from participants of the clinical research, hemoglobin, oxygenated
hemoglobin, collagen, lipids and water concentration and the scattering value
were obtained by using the equation diffusion in this thesis work. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Instituto Nacional de Astrofísica, Óptica y Electrónica | |
| dc.relation | citation:Salazar-Hermenegildo N.J. | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0 | |
| dc.subject | info:eu-repo/classification/Patrones/Speckle pattern | |
| dc.subject | info:eu-repo/classification/Suma vectorial aleatoria/Random phasor sum | |
| dc.subject | info:eu-repo/classification/Patrones multiples/Multiple Speckle Patterns | |
| dc.subject | info:eu-repo/classification/Velocidad/Velocity of the scatters | |
| dc.subject | info:eu-repo/classification/cti/7 | |
| dc.subject | info:eu-repo/classification/cti/33 | |
| dc.subject | info:eu-repo/classification/cti/3314 | |
| dc.title | Measurement of blood flow and assessment of breast health by using non-invasive optical techniques | |
| dc.type | Tesis | |
| dc.audience | generalPublic | |
