ApplicAtions news
For the latest applications news from the photonics industry go to
www.electrooptics.com/applications
oct enables non-invasive treatment of skin cancer
A case study documenting the successful use of Michaelson Diagnostics’ VivoSight OCT scanner for in vivo mapping of non-melanoma skin cancer has been published in the March 2011 edition of Photodiagnosis and Photodynamic Therapy. During the case study, clinicians used the company’s OCT scanner to assess the extent of tumours accurately, to be able to use non-invasive photodynamic therapy (PDT) to treat the tumour. Ordinarily, PDT is not used to treat non- melanoma skin cancer due to the difficulty in ascertaining whether or not the tumour has been removed in its entirety, but the company’s laser OCT scanner allows clinicians to be sure that the procedure has been successful. The key benefit of PDT is that it is non-invasive. The case study was
performed by Zaid Hamdoon and a team led by Colin Hopper at the Unit of Oral & Maxillofacial Surgery, University College Hospital London, and was supported by Killing Cancer, a charity dedicated to treating cancer patients with PDT. The VivoSight scanner
uses OCT to obtain images of sub-surface tissue similar to ultrasound at a sub-micron resolution, enabling the clinician to see critical details of the skin epidermis and dermis in real time.
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infrared imaging used as environmental policy enforcement tool
The DCMR Environmental Protection Agency, operating in Rijnmond, Netherlands, has bought a thermal imager for use in regulation of industries, and monitoring and assisting authorities on developing environmental policy. The DCMR issues permits to virtually all of the
22,000 enterprises in the area and carries out more than 9,000 inspections to monitor compliance with the permit conditions. It will use a GF320 optical gas imaging camera from Flir Advanced Thermal Solutions for inspections and law enforcement tasks. The DCMR recently performed field studies to
measure and quantify the total emissions of volatile organic compounds (VOCs) from industrial sources in the Rotterdam port area. The measurements indicate that the fugitive VOC emissions were about three to four times higher than the emissions that are annually reported to the DCMR. The initial focus for using the camera will be on inspecting storage tanks, vapour recovery units, and VOC handling activities of refineries and storage and handling facilities. The camera will be used to develop a standard and solid working method that can be used as a law enforcement tool. Effort will also made for a NTA (Dutch Technical Agreement)
together with other stakeholders to make the Flir GF320 camera an even more acceptable method. The final goal of the DCMR will be to reduce many kilotons of VOC’s emissions using infrared imaging. The camera is a real-time infrared camera for use
in harsh industrial environments. It takes advantage of state-of-the-art focal plane array detector and optical systems that are tuned to very narrow spectral infrared ranges. This enables the camera to image infrared energy absorbed by certain polluting gases. Images are processed and enhanced by the Flir High Sensitivity Mode feature to show clearly the presence of gases against stationary backgrounds.
lED fluorescence microscopy used for tB diagnosis The microscope’s optimal
German microscopy specialist Carl Zeiss is promoting its Primo Star iLED model LED- fluorescence microscope, developed with FIND (Foundation for Innovative New Diagnostics), for use in detecting tuberculosis bacteria and rapidly diagnosing the disease. The World Health Organisation has recommended the use of LED-fluorescence microscopy for this purpose.
ElEctro optics l MAY 2011
image contrast and ease of use allow a reliable and rapid diagnosis, while the economical and robust LED illumination can be switched to battery power in field laboratories and hospitals. This microscope is available in 22 countries with a particularly high rates of tuberculosis infections at a preferential price. The company is a member of
the Stop TB Initiative, set-up by the World Health Organisation in 2006 to combat tuberculosis and to defeat it completely by 2050.
www.electrooptics.com
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