Resources

total internal reflectance with red laser

Description: shining a red laser into a curved piece of transparent plastic shows how light can go around a bend (total internal reflectance) as experienced in a fiberoptic cable. total internal reflectance, fiberoptic

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Type: video/quicktime

Tags: total internal reflectance fiberoptic

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Uploaded over 2 years ago by marcom

Pharynx_Phase

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Attribution: Marco Molinaro

Type: image/jpeg

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Uploaded about 2 years ago by chris.sumerlin

Sunscreen and Sunglasses: Do they really protect you from the sun?

Description: UV Beads Demonstration

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Type: application/msword

Tags: teacher resource

Uploaded over 2 years ago by andrewlague

RGB color patches

Description: this file has pure red, green, and blue color patches as well as combinations. It can be used for reflectance measurements. Results will vary based on your printer. You can also use them directly from your computer screen to show how each color is composed of varying amounts of red, green and blue light.

Attribution: Marco Molinaro

Type: application/pdf

Tags: color rgb reflectance

Uploaded over 2 years ago by marcom

Image of brain tumor 2

Description: Image of brain human brain tumor (U87) transfected with gene for Green Fluorescent Protein (GFP), grown in rat brain

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Type: image/jpeg

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Uploaded about 2 years ago by chris.sumerlin

Lecture 2-Tissue optics, light propagation in tissue

Description: The wide variety of diagnostic and therapeutic applications of optical, thermal, and radiation biophysics in today's medical practice are discussed in this course. The physical and biophysical interaction mechanisms between the energy sources and tissue are emphasized. Fundamentals of optical, thermal, and radiation dosimetry are covered, with reference to the relevant tissue properties, the models of energy propagation within tissues, experimental techniques for dosimetry measurements, and the resulting biological effects. This sets the stage for discussing selected clinical and investigational uses of light, heat, x-rays, microwaves, and ultrasound. Examples include radiation therapy, x-ray and optical mammography, fluorescence imaging and spectroscopy, optical coherence tomography, photodynamic therapy, biological confocal microscopy, laser-, microwave-, and ultrasound-induced thermal therapies, and Raman spectroscopy.

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Type: application/pdf

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Uploaded about 2 years ago by chris.sumerlin

Interstitial Doppler Optical Coherence Tomography (via a fiber optic needle probe)

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Type: application/pdf

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Uploaded about 2 years ago by chris.sumerlin

Utility of Optical Monitoring During Laser Thermal Therapy

Description: Interstitial laser photo coagulation (ILP), alternatively referred to as laser thermal therapy (LTT) is a promising treatment modality that utilizes an optically-induced temperature rise to thermally destroy tumors. One of the challenges of this therapy is its dynamic nature, as tissue properties (optical, thermal, blood flow, etc) change during therapy, hence making pre-treatment planning very challenging. This added complexity necessitates the use of real-time, on-line feedback. Here, we propose the use of interstitial optical fiber sensors for this purpose, and describe different changes in their detected optical signals as a function of various important events that occur in the course of LTT. The advantages of such optical monitoring approach, as well as the challenges, are described in the context of LTT optimization.

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Type: application/pdf

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Uploaded about 2 years ago by chris.sumerlin

Fluorescent Embryo

Description: -reconstructed 3D image of a mouse embryo showing the expression of specific genes at this stage of development. -images generated by the technique of Optical Projection Tomography Reference: http://genex.hgu.mrc.ac.uk/OPT_Microscopy/optwebsite/frontpage/index.htm

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Type: video/quicktime

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Uploaded about 2 years ago by chris.sumerlin

Biophotonics and Infrared Radiation

Description: Here is a demonstration of infrared light; the light our eyes cannot see. In this demonstration you will see how an infrared camera measures temperatures of objects.

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Type: video/quicktime

Tags: infrared infrared radiation biophotonics

Uploaded about 2 years ago by chris.sumerlin

Doppler Optical Coherence Tomography of Tadpole Heart

Description: Doppler optical coherence tomography (8 frames per second) of the heart of a Xenopus tadpole, showing the flow of blood through the developing chambers at each heart beat

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Type: video/quicktime

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Uploaded about 2 years ago by chris.sumerlin

Parameciumpol Coleps6

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Attribution: Marco Molinaro

Type: image/jpeg

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Uploaded about 2 years ago by chris.sumerlin

Laser wrinkle removal

Description: using near infrared lasers that pulse quickly, collagen fibers are heated and when they cool the skin surface wrinkles are reduced. The flashes are normally invisible to the naked eye but are made visible because videocameras are sensitive to near infrared light.

Attribution: Marco Molinaro

Type: video/quicktime

Tags: wrinkle removal laser infrared teacher resource

Uploaded over 2 years ago by marcom

Mystery Reflections: Fluorescence and Biophotonics

Description: There are things that you cannot see because your eyes only detect the light that comes from objects in the specific range of colors that are part of visible light. However there are some materials in our world are fluorescent. When you shine a black light upon them then they will glow back a bright color that was not there before.

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Type: video/quicktime

Tags: fluorescence biophotonics cells money teacher resource

Uploaded about 2 years ago by chris.sumerlin

Parameciumpol4 SELECT

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Attribution: Marco Molinaro

Type: image/jpeg

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Uploaded about 2 years ago by chris.sumerlin

Diatom BF

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Attribution: Ana Corbacho

Type: image/jpeg

Tags: diatom

Uploaded about 2 years ago by chris.sumerlin

Paramecium-Composed

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Attribution: Marco Molinaro

Type: image/jpeg

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Uploaded about 2 years ago by chris.sumerlin

TRA Level One 2008: Biophotonics 101

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Type: application/pdf

Tags: biophotonics education teacher resource

Uploaded about 2 years ago by chris.sumerlin

TRA Level Two 2008: Spectroscopy 101

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Type: application/pdf

Tags: teacher resource

Uploaded about 2 years ago by chris.sumerlin

inside of a portable fiberoptic spectrophotometer

Description: This is an Ocean Optics USB2000 spectrophotometer with the cover removed to show the mirror (left) and detector (right).

Attribution: Marco Molinaro

Type: image/jpeg

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Uploaded over 2 years ago by marcom

Schematic of the principle of optical coherence tomography (OCT)

Description: The cartoon is showing the principle of optical coherence tomography (OCT). Light from a short coherence-length source is passed through a beam splitter: 50% goes to the tissue (shown in cross-section) and 50% to a movable reference mirror. The reflected signals are combined to form the signal. As the reference mirror scans, the tissue is probed to corresponding depths (A-scan). A 2-D (B-scan)is then generated by moving the beam across the tissue surface.

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Type: image/gif

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Uploaded about 2 years ago by chris.sumerlin