INTRODUCTION Infrared thermal imaging is based on perfusion changes reflected by skin temperature variations. It is an established non-invasive diagnostic method within vascular surgery, with applications such as peripheral arterial disease assessment and prevention of diabetic foot complications. However, owing to hardware limitations or lack of resources, it is not yet widely used in clinical...

Near infrared quantum dots have been receiving great attention as fluorescent optical probes for in vivo imaging applications. In this contribution, we report the synthesis and surface functionalization of cadmium free ternary AgInS2 nanocrystals emitting in the near infrared range for successful in vitro and in vivo bioimaging applications. The FDA approved triblock copolymer Pluronic F127 was...

Thermal infrared imaging has been proposed as a potential system for the computational assessment of human autonomic nervous activity and psychophysiological states in a contactless and noninvasive way. Through bioheat modeling of facial thermal imagery, several vital signs can be extracted, including localized blood perfusion, cardiac pulse, breath rate, and sudomotor response, since all these...

FTIR spectroscopic imaging allows the visualization of the distribution of chemical components in cells. However, obtaining images of living cells is difficult because of the strong absorption of water in the mid-infrared region. The use of attenuated total reflection (ATR) FTIR spectroscopic imaging provides a possibility to study tissues or live cells in an aqueous environment.[1] This approa...

Fourier transform infrared (FTIR) microscopic imaging uses a combination of an FTIR spectrometer with a microscope and Focal Plane Array (FPA) detector. The method has been recognized as a powerful and versatile imaging tool in many disciplines, ranging from biomedical research through to materials science, art conservation and forensics. The Field Of View (FOV) depends on both the magnifi cati...

The current paper describes rather new and straightforward non-invasive mid infrared spectroscopic techniques for the position sensitive identification of sample components. These techniques include mid infrared (MIR) microspectroscopy, mapping as well as imaging approaches e.g. in transmission, reflection-absorption, or attenuated total reflection mode. The basic principles of the different in...

Background: Near infrared spectroscopy imaging is one of the new techniques used for investigating structural and functionality of different body tissues. This is done by injecting light into the medium and measuring the photon intensity at the surface of the tissue.Method: In this paper the different medical applications, various imaging and simulation techniques of NIRS imaging is described. ...

The principle, configuration, and the special features of an infrared imaging system are presented in this paper. The work has been done in two parts. First, the nonuniformity of IRFPA is detected using a processing system based on FPGA & microcontroller. The FPGA generates system timing and performs data acquisition, while the microcontroller reads the IRFPA data from FPGA and sends them to th...

Zinc phthalocyanine labelled polyethylene glycol was prepared to track and monitor the in vivo fate of polyethylene glycol. The chemical structures were characterized by nuclear magnetic resonance and infrared spectroscopy. Their light stability and fluorescence quantum yield were evaluated by UV-Visible and fluorescence spectroscopy methods. The interaction of zinc phthalocyanine labelled poly...

Brain activity is associated with changes in optical properties of brain tissue. Optical measurements during brain activation can assess haemoglobin oxygenation, cytochrome-c-oxidase redox state, and two types of changes in light scattering reflecting either membrane potential (fast signal) or cell swelling (slow signal), respectively. In previous studies of exposed brain tissue, optical imagin...