{"id":{"repo_id":"njit","oai_identifier":"oai:digitalcommons.njit.edu:theses-1113"},"canonical_url":"https://search.dev.ndltd.org/etd/njit/oai:digitalcommons.njit.edu:theses-1113","repository":{"repo_id":"njit","name":"NJIT","base_url":"https://digitalcommons.njit.edu/do/oai/"},"display":{"title":"Temperature elevations due to NIR exposure in the brain tissue","abstract":"Near infrared (NIR) lasers have been used in medical applications both for diagnostic and therapeutic purposes. Temperature elevation profile inside the tissue is a critical factor that needs to be better understood in these applications. The purpose of this study is to determine the temperature distribution due to a low power N I R laser irradiation in living neural tissue. Temperature measurements were made directly using a thermocouple probe inside the rat brain cortex within the sagittal plane. The spatial map indicates that N I R light penetrates more readily in the vertical directions than the spreading in the horizontal axis. The decrease in the vertical direction can be approximated with a single order exponentially decaying function. The results also suggest that the temperature elevation can be kept below 0.5 C anywhere in the tissue if the incident laser beam power density is less than 27 mW/cm^2. These experiments should be repeated in other types of neural tissue such as the white matter of the brain and the spinal cord to obtain more complete results.","abstract_html":"Near infrared (NIR) lasers have been used in medical applications both for diagnostic and therapeutic purposes. Temperature elevation profile inside the tissue is a critical factor that needs to be better understood in these applications. The purpose of this study is to determine the temperature distribution due to a low power N I R laser irradiation in living neural tissue. Temperature measurements were made directly using a thermocouple probe inside the rat brain cortex within the sagittal plane. The spatial map indicates that N I R light penetrates more readily in the vertical directions than the spreading in the horizontal axis. The decrease in the vertical direction can be approximated with a single order exponentially decaying function. The results also suggest that the temperature elevation can be kept below 0.5 C anywhere in the tissue if the incident laser beam power density is less than 27 mW/cm^2. These experiments should be repeated in other types of neural tissue such as the white matter of the brain and the spinal cord to obtain more complete results.","abstract_has_math":false,"creators":["Ersen, Ali"],"institution":null,"degree_name":"Master of Science in Biomedical Engineering - (M.S.)","degree_level":null,"degree_discipline":"Biomedical Engineering","degree_department":null,"school":null,"contributors":["Mesut Sahin","Bryan J. Pfister","Yahia M. Al-Smadi"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-01-31T08:00:00Z","date_published":"2012-01-31T08:00:00Z","updated_at":"2026-07-24T03:22:19Z","subjects":["Near infrared lasers","Low power NIR laser irradiation","Temperature distribution","Biomedical Engineering and Bioengineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.njit.edu/theses/114","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Mesut Sahin","Bryan J. Pfister","Yahia M. Al-Smadi"]},{"key":"dc:creator","label":"Author","values":["Ersen, Ali"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biomedical Engineering"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Biomedical Engineering - (M.S.)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Near infrared lasers","Low power NIR laser irradiation","Temperature distribution","Biomedical Engineering and Bioengineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://digitalcommons.njit.edu/theses/114"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Near infrared (NIR) lasers have been used in medical applications both for diagnostic and therapeutic purposes. Temperature elevation profile inside the tissue is a critical factor that needs to be better understood in these applications. The purpose of this study is to determine the temperature distribution due to a low power N I R laser irradiation in living neural tissue. Temperature measurements were made directly using a thermocouple probe inside the rat brain cortex within the sagittal plane. The spatial map indicates that N I R light penetrates more readily in the vertical directions than the spreading in the horizontal axis. The decrease in the vertical direction can be approximated with a single order exponentially decaying function. The results also suggest that the temperature elevation can be kept below 0.5 C anywhere in the tissue if the incident laser beam power density is less than 27 mW/cm^2. These experiments should be repeated in other types of neural tissue such as the white matter of the brain and the spinal cord to obtain more complete results."]},{"key":"dc:title","label":"Title","values":["Temperature elevations due to NIR exposure in the brain tissue"]}]}],"canonical_facts":{"dc:contributor":["Mesut Sahin","Bryan J. Pfister","Yahia M. Al-Smadi"],"dc:creator":["Ersen, Ali"],"dc:description.abstract":["Near infrared (NIR) lasers have been used in medical applications both for diagnostic and therapeutic purposes. Temperature elevation profile inside the tissue is a critical factor that needs to be better understood in these applications. The purpose of this study is to determine the temperature distribution due to a low power N I R laser irradiation in living neural tissue. Temperature measurements were made directly using a thermocouple probe inside the rat brain cortex within the sagittal plane. The spatial map indicates that N I R light penetrates more readily in the vertical directions than the spreading in the horizontal axis. The decrease in the vertical direction can be approximated with a single order exponentially decaying function. The results also suggest that the temperature elevation can be kept below 0.5 C anywhere in the tissue if the incident laser beam power density is less than 27 mW/cm^2. These experiments should be repeated in other types of neural tissue such as the white matter of the brain and the spinal cord to obtain more complete results."],"dc:identifier":["https://digitalcommons.njit.edu/theses/114"],"dc:subject":["Near infrared lasers","Low power NIR laser irradiation","Temperature distribution","Biomedical Engineering and Bioengineering"],"dc:title":["Temperature elevations due to NIR exposure in the brain tissue"],"dc:type":["Thesis"],"thesis:degree_discipline":["Biomedical Engineering"],"thesis:degree_name":["Master of Science in Biomedical Engineering - (M.S.)"]},"updated_at":"2026-07-24T03:22:19Z"}