WO2009030934A3 - Imaging of local blood oxygenation - Google Patents

Imaging of local blood oxygenation Download PDF

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Publication number
WO2009030934A3
WO2009030934A3 PCT/GB2008/003042 GB2008003042W WO2009030934A3 WO 2009030934 A3 WO2009030934 A3 WO 2009030934A3 GB 2008003042 W GB2008003042 W GB 2008003042W WO 2009030934 A3 WO2009030934 A3 WO 2009030934A3
Authority
WO
WIPO (PCT)
Prior art keywords
images
imaging
order
wavelengths
pulsing
Prior art date
Application number
PCT/GB2008/003042
Other languages
French (fr)
Other versions
WO2009030934A2 (en
Inventor
Sijung Hu
Angelos Echiadis
Vassilios Chouliaras
Original Assignee
Univ Loughborough
Sijung Hu
Angelos Echiadis
Vassilios Chouliaras
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Loughborough, Sijung Hu, Angelos Echiadis, Vassilios Chouliaras filed Critical Univ Loughborough
Publication of WO2009030934A2 publication Critical patent/WO2009030934A2/en
Publication of WO2009030934A3 publication Critical patent/WO2009030934A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0073—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by tomography, i.e. reconstruction of 3D images from 2D projections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
    • A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
    • A61B5/445—Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A61B2562/0242—Special features of optical sensors or probes classified in A61B5/00 for varying or adjusting the optical path length in the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
    • A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
    • A61B5/444—Evaluating skin marks, e.g. mole, nevi, tumour, scar

Abstract

Use of photoplethysmographic processes in order to determine blood pulsing is known. By providing illumination over a range of excitation frequencies or wavelengths and using a multi time gating technique with regard to returned light, images are created which provide a spectral depth due to the varying scatter and absorption effects at the different excitation wavelengths. These images can be consolidated in order to provide a substantially real time view of pulsing action dependent upon blood oxygen saturation within the blood circulation system.
PCT/GB2008/003042 2007-09-07 2008-09-08 Imaging of local blood oxygenation WO2009030934A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0717365A GB0717365D0 (en) 2007-09-07 2007-09-07 Imaging
GB0717365.1 2007-09-07

Publications (2)

Publication Number Publication Date
WO2009030934A2 WO2009030934A2 (en) 2009-03-12
WO2009030934A3 true WO2009030934A3 (en) 2009-08-06

Family

ID=38640361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/003042 WO2009030934A2 (en) 2007-09-07 2008-09-08 Imaging of local blood oxygenation

Country Status (2)

Country Link
GB (1) GB0717365D0 (en)
WO (1) WO2009030934A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102834127B (en) * 2010-03-31 2016-08-03 泰尔茂株式会社 Integrated circuit and employ the medical apparatus and instruments of this integrated circuit
TWI504380B (en) * 2012-11-08 2015-10-21 Univ Nat Chiao Tung Portable 2-dimension oximeter image device
GB2519335A (en) 2013-10-17 2015-04-22 Univ Loughborough Opto-physiological sensor and method of design
EP3125745A1 (en) * 2014-03-31 2017-02-08 Koninklijke Philips N.V. Device, system and method for tumor detection and/or monitoring
EP3200694A1 (en) * 2014-10-02 2017-08-09 Koninklijke Philips N.V. Optical vital signs sensor.
WO2017025775A1 (en) 2015-08-11 2017-02-16 Latvijas Universitate Device for adaptive photoplethysmography imaging
TWI766774B (en) * 2021-07-26 2022-06-01 神煜電子股份有限公司 Heart rate and blood oxygen monitoring device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083944A2 (en) * 2003-03-18 2004-09-30 The General Hospital Corporation Polarized light devices and methods
WO2006100685A2 (en) * 2005-03-25 2006-09-28 Cnoga Holdings Ltd Optical sensor device and image processing unit for measuring chemical concentrations, chemical saturations and biophysical parameters
US20070016079A1 (en) * 2005-04-04 2007-01-18 Freeman Jenny E Hyperspectral imaging in diabetes and peripheral vascular disease

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004083944A2 (en) * 2003-03-18 2004-09-30 The General Hospital Corporation Polarized light devices and methods
WO2006100685A2 (en) * 2005-03-25 2006-09-28 Cnoga Holdings Ltd Optical sensor device and image processing unit for measuring chemical concentrations, chemical saturations and biophysical parameters
US20070016079A1 (en) * 2005-04-04 2007-01-18 Freeman Jenny E Hyperspectral imaging in diabetes and peripheral vascular disease

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
HU S.: "Proceedings of International Biomedical Engineering Workshop UK ? China Science Network Electro-Optical Sensors for Physiological Measurements and Applications", INTERNATIONAL BIOMEDICAL ENGINEERING WORKSHOP UK - CHINA SCIENCE NETWORK ELECTRO-OPTICAL SENSORS FOR PHYSIOLOGICAL MEASUREMENTS AND ELECTRO-OPTICAL SENSORS FOR PHYSIOLOGICAL MEASUREMENTS AND APPLICATIONS 8-9 JUNE 2006, 21 April 2007 (2007-04-21), XP002526641, Retrieved from the Internet <URL:http://web.archive.org/web/20070421115802/http://www.lboro.ac.uk/departments/el/research/photonics/presentations/proceedings+of+International+Biomedical+Engineering+Workshop8_9_06_2006.pdf> *
JIA ZHENG; SIJUNG HU; AZORIN-PERIS V; ECHIADIS A; CHOULIARAS V; SUMMERS R: "Remote simultaneous dual wavelength imaging photoplethysmography: a further step towards 3-D mapping of skin blood microcirculation", PROCEEDINGS OF THE SPIE - THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, vol. 6850, 19 January 2008 (2008-01-19), pages 68500S1 - 68500S8, XP002526642 *
SIJUNG HU: "Introduction of Photonics Engineering and Health Technology Research Group", INTERNATIONAL BIOMEDICAL ENGINEERING WORKSHOP UK - CHINA SCIENCE NETWORK ELECTRO-OPTICAL SENSORS FOR PHYSIOLOGICAL MEASUREMENTS AND ELECTRO-OPTICAL SENSORS FOR PHYSIOLOGICAL MEASUREMENTS AND APPLICATIONS 8-9 JUNE 2006, 22 July 2007 (2007-07-22), XP002526640, Retrieved from the Internet <URL:http://web.archive.org/web/20070722165932/www.lboro.ac.uk/departments/el/research/photonics/presentations/Dr+S+Hu_LU_OxiMap.pdf> *

Also Published As

Publication number Publication date
GB0717365D0 (en) 2007-10-17
WO2009030934A2 (en) 2009-03-12

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