Measurement of blood flow and assessment of breast health by using non-invasive optical techniques
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...
| Autor: | |
|---|---|
| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | México |
| Institución: | Instituto Nacional de Astrofísica, Óptica y Electrónica |
| Repositorio: | Repositorio Institucional del INAOE |
| Idioma: | inglés |
| OAI Identifier: | oai:inaoe.repositorioinstitucional.mx:1009/51 |
| Acceso en línea: | http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/51 |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/Patrones/Speckle pattern info:eu-repo/classification/Suma vectorial aleatoria/Random phasor sum info:eu-repo/classification/Patrones multiples/Multiple Speckle Patterns info:eu-repo/classification/Velocidad/Velocity of the scatters info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3314 |
| id |
MX_f2d446cadbbade58abe277b38ecc8e65 |
|---|---|
| oai_identifier_str |
oai:inaoe.repositorioinstitucional.mx:1009/51 |
| network_acronym_str |
MX |
| network_name_str |
México |
| repository_id_str |
|
| spelling |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniquesNOEMI JASMIN SALAZAR HERMENEGILDOinfo:eu-repo/classification/Patrones/Speckle patterninfo:eu-repo/classification/Suma vectorial aleatoria/Random phasor suminfo:eu-repo/classification/Patrones multiples/Multiple Speckle Patternsinfo:eu-repo/classification/Velocidad/Velocity of the scattersinfo:eu-repo/classification/cti/7info:eu-repo/classification/cti/33info:eu-repo/classification/cti/3314info:eu-repo/classification/cti/3314Laser 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.Instituto Nacional de Astrofísica, Óptica y ElectrónicaJULIO CESAR RAMIREZ SAN JUAN2015-11-19info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://inaoe.repositorioinstitucional.mx/jspui/handle/1009/51reponame:Repositorio Institucional del INAOEinstname:Instituto Nacional de Astrofísica, Óptica y Electrónicainstacron:INAOEengcitation:Salazar-Hermenegildo N.J.info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0oai:inaoe.repositorioinstitucional.mx:1009/512024-08-28T03:22:40Z |
| dc.title.none.fl_str_mv |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| title |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| spellingShingle |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques NOEMI JASMIN SALAZAR HERMENEGILDO info:eu-repo/classification/Patrones/Speckle pattern info:eu-repo/classification/Suma vectorial aleatoria/Random phasor sum info:eu-repo/classification/Patrones multiples/Multiple Speckle Patterns info:eu-repo/classification/Velocidad/Velocity of the scatters info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3314 info:eu-repo/classification/cti/3314 |
| title_short |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| title_full |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| title_fullStr |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| title_full_unstemmed |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| title_sort |
Measurement of blood flow and assessment of breast health by using non-invasive optical techniques |
| dc.creator.none.fl_str_mv |
NOEMI JASMIN SALAZAR HERMENEGILDO |
| author |
NOEMI JASMIN SALAZAR HERMENEGILDO |
| author_facet |
NOEMI JASMIN SALAZAR HERMENEGILDO |
| author_role |
author |
| dc.contributor.none.fl_str_mv |
JULIO CESAR RAMIREZ SAN JUAN |
| dc.subject.none.fl_str_mv |
info:eu-repo/classification/Patrones/Speckle pattern info:eu-repo/classification/Suma vectorial aleatoria/Random phasor sum info:eu-repo/classification/Patrones multiples/Multiple Speckle Patterns info:eu-repo/classification/Velocidad/Velocity of the scatters info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3314 info:eu-repo/classification/cti/3314 |
| topic |
info:eu-repo/classification/Patrones/Speckle pattern info:eu-repo/classification/Suma vectorial aleatoria/Random phasor sum info:eu-repo/classification/Patrones multiples/Multiple Speckle Patterns info:eu-repo/classification/Velocidad/Velocity of the scatters info:eu-repo/classification/cti/7 info:eu-repo/classification/cti/33 info:eu-repo/classification/cti/3314 info:eu-repo/classification/cti/3314 |
| 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. |
| publishDate |
2015 |
| dc.date.none.fl_str_mv |
2015-11-19 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/doctoralThesis info:eu-repo/semantics/publishedVersion |
| format |
doctoralThesis |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/51 |
| url |
http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/51 |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
citation:Salazar-Hermenegildo N.J. |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/4.0 |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Instituto Nacional de Astrofísica, Óptica y Electrónica |
| publisher.none.fl_str_mv |
Instituto Nacional de Astrofísica, Óptica y Electrónica |
| dc.source.none.fl_str_mv |
reponame:Repositorio Institucional del INAOE instname:Instituto Nacional de Astrofísica, Óptica y Electrónica instacron:INAOE |
| instname_str |
Instituto Nacional de Astrofísica, Óptica y Electrónica |
| instacron_str |
INAOE |
| institution |
INAOE |
| reponame_str |
Repositorio Institucional del INAOE |
| collection |
Repositorio Institucional del INAOE |
| repository.name.fl_str_mv |
|
| repository.mail.fl_str_mv |
|
| _version_ |
1858177645856948224 |
| score |
14.965156 |