Tag Archives: fluorescence

Fluorescence endoscopy

June 23, 2023 by Modulight
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Fluorescence endoscopyFluorescence endoscopy is the latest advancement in endoscopy technology, which uses specialized dyes to highlight specific areas of interest and provide better visibility and image quality during procedures. This technology has revolutionized the way we view the inside of the body, enabling doctors to obtain more detailed images of the gastrointestinal tract, lungs, bladder, and reproductive organs.Endoscopy Endoscopy is a powerful tool in diagnosing and treating a wide range of medical conditions. With its minimally invasive approach and high accuracy, it has become a Continue reading →

Fluorescence imaging & endoscopy for tumor visualization and diagnostics

July 6, 2022 by Modulight Content
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Several fluorescent agents have been approved for fluorescence based diagnosis & intraoperative imaging: Dye generic name Countries Excitation Detection Indications Indocyanine Green (ICG) Worldwide 800 nm Near-infrared (820 nm) Multiple uses: lymphatic mapping, tissue perfusion, visualization of biliary ducts and blood veins, retinal angiography Fluorescein Worldwide 490 nm Green fluorescence (525 nm) Fluorescein angiography or angioscopy (ophthalmology) Methylene Blue Worldwide 665 nm 688 nm Endoscopic polypectomy, chromoendoscopy, lymphatic drainage 5-ALA Hydrochloride (converted to Pp-IX) Worldwide 400 – 410 nm Red fluorescence (620 – 710 nm) Continue reading →Introduction to fluorescence imaging Fluorescence is a phenomenon where substance that has absorbed certain wavelength of light emits it back at another wavelength. These substances are called fluorophores or fluorescent dyes. The emitted light has a longer wavelength than the absorbed one since some energy of the photon is lost in the process. The difference in wavelengths between absorbed and emitted light, called Stokes shift, allows very low background for fluorescence detection by separating it from the excitation light. The process of fluorescence generation is Continue reading →

Flow cytometry

March 28, 2022 by Modulight Content
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Introduction Flow cytometry is a widely used method in biomedical research and increasingly also in clinical diagnostics. It is a powerful and rapid technique to analyze physical and chemical properties of single cells or particles as they are suspended in liquid and pass in a narrow line across laser beams. Fluorescence together with scattered laser light is then filtered, detected, and analyzed on the other side of the sample. In addition to analysis, many flow cytometers can also sort and purify cell populations of interest Continue reading →Introduction Flow cytometry is a widely used method in biomedical research and increasingly also in clinical diagnostics. It is a powerful and rapid technique to analyze physical and chemical properties of single cells or particles as they are suspended in liquid and pass in a narrow line across laser beams. Fluorescence together with scattered laser light is then filtered, detected, and analyzed on the other side of the sample. In addition to analysis, many flow cytometers can also sort and purify cell populations of interest Continue reading →

Detection of colorectal polyps in humans using an intravenously administered fluorescent peptide targeted against c-Met

July 13, 2015 by Modulight
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Published in: Nature Medicine Authors: Jacobus Burggraaf, Ingrid M C Kamerling, Paul B Gordon, Lenneke Schrier, Marieke L de Kam, Andrea J Kales, Ragnar Bendiksen, Bård Indrevoll, Roger M Bjerke, Siver A Moestue, Siavash Yazdanfar, Alexandra M J Langers, Marit Swaerd-Nordmo, Geir Torheim, Madhuri V Warren, Hans Morreau, Philip W Voorneveld, Tessa Buckle, Fijs W B van Leeuwen, Liv-Ingrid Ødegårdstuen, Grethe T Dalsgaard, Andrew Healey, James C H Hardwick    Published in: Nature Medicine Authors: Jacobus Burggraaf, Ingrid M C Kamerling, Paul B Gordon, Lenneke Schrier, Marieke L de Kam, Andrea J Kales, Ragnar Bendiksen, Bård Indrevoll, Roger M Bjerke, Siver A Moestue, Siavash Yazdanfar, Alexandra M J Langers, Marit Swaerd-Nordmo, Geir Torheim, Madhuri V Warren, Hans Morreau, Philip W Voorneveld, Tessa Buckle, Fijs W B van Leeuwen, Liv-Ingrid Ødegårdstuen, Grethe T Dalsgaard, Andrew Healey, James C H Hardwick   Laser was used in collaboration with GE Healthcare as a light source for NIR fluorescence Continue reading →