NDLI: Basic study of charring detection at the laser catheter-tip using back scattering light measurement during therapeutic laser irradiation in blood

Content Provider	IEEE Xplore Digital Library
Author	Takahashi, M. Ito, A. Kajihara, T. Matsuo, H. Arai, T.
Copyright Year	2010
Description	Author affiliation: School of Fundamental Science and Technology, Graduate School of Science and Technology, KEIO University (Japan) (Takahashi, M.; Ito, A.; Kajihara, T.; Matsuo, H.; Arai, T.)
Abstract	The purpose of this study is to investigate transient process of the charring at the laser catheter-tip in blood during therapeutic laser irradiation by the back scattering light measurement to detect precursor state of the charring. We took account of using photodynamic therapy for arrhythmia in blood through the laser catheter. We observed the influence of the red laser irradiation (λ=663 nm) upon the shape of red blood cells (RBCs). The RBCs aggregation, round formation, and hemolysis were took place sequentially before charring. With a model blood sandwiched between glass plates simulated as a catheter-tip boundary, we measured diffuse-reflected-light power and transmitted-light power simultaneously and continuously by a microscopic optics during the laser irradiation. We found that measured light power changes were originated with RBCs shape change induced by temperature rise due to the laser irradiation. A gentle peak following a slow descending was observed in the diffuse-reflected-light power history. This history might indicate the precursor state of the charring, in which the hemolysis might be considered to advance rapidly. We think that the measurement of diffuse-reflected-light power history might be able to detect precursor state of charring at the catheter-tip in blood.
Starting Page	2759
Ending Page	2761
File Size	436918
Page Count	3
File Format	PDF
ISBN	9781424441235
ISSN	1557170X
DOI	10.1109/IEMBS.2010.5626585
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-31
Publisher Place	Argentina
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Blood Measurement by laser beam Radiation effects Laser modes Temperature measurement History Laser ablation
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Quantification of Local Convectional Cooling During Cardiac Radiofrequency Catheter Ablation

Temperature elevation inside neural tissue illuminated by NIR laser

Supervisory system for robot assisted laser phonomicrosurgery

Laser Interstitial Thermotherapy for pancreatic tumor ablation: Theoretical model and experimental validation

Fluence of Thulium laser system in skin ablation

Combined Thermal and Laser Doppler Imaging in the Assessment of Cutaneous Tissue Perfusion

Ultrasound monitoring of temperature change in liver tissue during laser thermotherapy: 10°C intervals

Goniometric measurement for the estimation of anisotropy coefficient of human and animal pancreas

Investigation of photoplethysmography, laser doppler flowmetry and near infrared spectroscopy during induced thermal stress

Basic study of charring detection at the laser catheter-tip using back scattering light measurement during therapeutic laser irradiation in blood

Similar Documents

Quantification of Local Convectional Cooling During Cardiac Radiofrequency Catheter Ablation

Temperature elevation inside neural tissue illuminated by NIR laser

Supervisory system for robot assisted laser phonomicrosurgery

Laser Interstitial Thermotherapy for pancreatic tumor ablation: Theoretical model and experimental validation

Fluence of Thulium laser system in skin ablation

Combined Thermal and Laser Doppler Imaging in the Assessment of Cutaneous Tissue Perfusion

Ultrasound monitoring of temperature change in liver tissue during laser thermotherapy: 10°C intervals

Goniometric measurement for the estimation of anisotropy coefficient of human and animal pancreas

Investigation of photoplethysmography, laser doppler flowmetry and near infrared spectroscopy during induced thermal stress

Basic study of charring detection at the laser catheter-tip using back scattering light measurement during therapeutic laser irradiation in blood