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Lasers in medicine: blood and blood flow in the tissues Dr Tony Fisher

Lasers in medicine: blood and blood flow in the tissues Dr Tony Fisher Consultant Medical Physicist Dept of Clinical Engineering Royal Liverpool Univ. Hospital. Lasers in medicine: blood and blood flow in the tissues Where do we use lasers? (some examples) destruction ...

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Lasers in medicine: blood and blood flow in the tissues Dr Tony Fisher

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  1. Lasers in medicine: blood and blood flow in the tissues Dr Tony Fisher Consultant Medical Physicist Dept of Clinical Engineering Royal Liverpool Univ. Hospital

  2. Lasers in medicine: blood and blood flow in the tissues • Where do we use lasers? (some examples) • destruction ... • treatment (eg. photodynamic therapy in cancer) • surgery - the CO2 laser scalpel • - removal of lens in cataract surgery of the eye • - caurtery of blood vessels in the retina • - welding of detached retina • imaging ... • skin blood flow (Laser Doppler Flow-mapping) • curvature of the front of the eye (corneal topography) • blood vessels and nerves of the retina • - OCT (optical coherence tomography) • - SLO (scanning laser ophthalmoscope) • laboratory diagnostics ... • blood sample analysis • microscopy of tissue samples

  3. Lasers in medicine: blood and blood flow in the tissues • Where do we use lasers? (some examples) • destruction ... • treatment (eg. photodynamic therapy in cancer) • surgery - the CO2 laser scalpel • - removal of lens in cataract surgery of the eye • - cautery of blood vessels in the retina • - welding of detached retina • imaging ... • skin blood flow (Laser Doppler Flow-mapping) • curvature of the front of the eye (corneal topography) • blood vessels and nerves of the retina • - OCT (optical coherence tomography) • - SLO (scanning laser ophthalmoscope) • laboratory diagnostics ... • blood sample analysis • microscopy of tissue samples

  4. Lasers in medicine: blood and blood flow in the tissues • Where do we use lasers? (some examples) • destruction ... • treatment (eg. phoodynamic therapy in cancer) • surgery - the CO2 laser scalpel • - removal of lens in cataract surgery of the eye • - cautery of blood vessels in the retina • - welding of detached retina • imaging ... • skin blood flow (Laser Doppler Flow-mapping) • curvature of the front of the eye (corneal topography) • blood vessels and nerves of the retina • - OCT (optical coherence tomography) • - SLO (scanning laser ophthalmoscope) • laboratory diagnostics ... • blood sample analysis • microscopy of tissue samples

  5. Lasers in medicine: blood and blood flow in the tissues • Where do we use lasers? (some examples) • destruction ... • treatment (eg. photodynamic therapy in cancer) • surgery - the CO2 laser scalpel • - removal of lens in cataract surgery of the eye • - cautery of blood vessels in the retina • - welding of detached retina • imaging ... • skin blood flow (Laser Doppler Flow-mapping) • curvature of the front of the eye (corneal topography) • blood vessels and nerves of the retina • - OCT (optical coherence tomography) • - SLO (scanning laser ophthalmoscope) • laboratory diagnostics ... • blood sample analysis • microscopy of tissue samples

  6. Lasers in medicine: blood and blood flow in the tissues • Today’s talk ... • Introduction to blood and blood flow • Laser Flow-Cytometry (LFC) of blood ... diagnostics • Laser Doppler blood Flow measurement (LDF) ... imaging & clinical measurement

  7. The blood circulation: blood flows twice through the heart to go around the body once

  8. The composition of blood

  9. The red cells

  10. The white cells

  11. The white cells continued

  12. The platelets

  13. Some physical properties of red cells

  14. Blood cells must deform to flow through small vessels

  15. Next PPnt

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