A5075336696- Optical Imaging and Spectroscopy Techniques
- Photoacoustic and Ultrasonic Imaging
- Photodynamic Therapy Research Studies
- Laser-induced spectroscopy and plasma
- Spectroscopy Techniques in Biomedical and Chemical Research
- Ocular and Laser Science Research
- Cultural Heritage Materials Analysis
- Laser Material Processing Techniques
- Optical Coherence Tomography Applications
- Nanoplatforms for cancer theranostics
- Conservation Techniques and Studies
- Dental Erosion and Treatment
- Laser Applications in Dentistry and Medicine
- Skin Protection and Aging
- Experimental and Theoretical Physics Studies
- Laser Design and Applications
- Cutaneous Melanoma Detection and Management
- melanin and skin pigmentation
- Thermoregulation and physiological responses
- Microfluidic and Capillary Electrophoresis Applications
- Dental Radiography and Imaging
- Acne and Rosacea Treatments and Effects
- Glutathione Transferases and Polymorphisms
- Radiation Dose and Imaging
- Flow Measurement and Analysis
University of West Attica
2022-2024
National and Kapodistrian University of Athens
2012-2023
National Technical University of Athens
2005-2020
Technological Educational Institute of Athens
2014-2017
Andreas Sygros Hospital
2014-2016
Noninvasive treatments are increasingly being used for the management of basal cell carcinoma (BCC), predominant type nonmelanoma skin cancer, making development noninvasive diagnostic technologies highly relevant clinical practice. Laser-induced fluorescence (LIF) spectroscopy emerges as an attractive technique diagnosis and demarcation BCC due to its noninvasiveness, high sensitivity, real-time measurements, user-friendly methodology. LIF relies on principle differential emission between...
The object of this study was to investigate whether laser-induced skin autofluorescence (LIF) and/or light reflectance spectra could provide a useful contrast between basal cell carcinoma (BCC) tissues and the surrounding healthy skin. Unstained human samples, excised from humans undergoing biopsy examination, were irradiated with nitrogen laser (λ = 337 nm) for excitation tungsten halogen lamp measurements. ex vivo spectroscopic results correlated histopathology images distinguish areas BCC...
Background/purpose: Laser‐induced autofluorescence spectroscopy provides excellent possibilities for medical diagnostics of different tissue pathologies including cancer. However, to create the whole picture pathological changes, investigators collect spectral information from patients in vivo or they study tumor models obtain objective fluorescent properties every kind healthy and diseased tissue. Therefore, it is very important find most appropriate, close human skin, animal samples...
It is common to modify valuable, sophisticated equipment, originally acquired for other purposes, adapt it the needs of educational experiments, with great didactic effectiveness. The present project concerns a setup developed from components portable system energy dispersive x-ray fluorescence spectroscopy (EDXRF). Two modules have been on basis this setup. Module 1 comprises series laboratory exercises investigating basic principles, such as verification Moseley's law, Compton's law and...
The continuous growth of computer and sensor technology allows many researchers to develop simple modifications and/or refinements standard educational experiments, making them more attractive comprehensible students thus increasing their impact. In the framework this approach, present study proposes an alternative experimental setup, which confirmation Hagen–Poiseuille's law, governing flow real fluids through tubes, a law with numerous important applications in both medicine. proposed...
The aim of this work was to evaluate the temperature fields and dynamics heat conduction into skin tissue under several laser irradiation conditions with both a pulsed ultraviolet (UV) (λ=337 nm ) continuous-wave (cw) visible beam (λ=632.8 using Monte Carlo modeling. Finite-element methodology used for transfer simulation. analysis results showed that is not localized on surface, but collected inside in lower layers. simulation made UV (used as excitation source laser-induced fluorescence)...
Abstract Laser cleaning tests were performed on ancient coins, which belong to the collection of Numismatic Museum Athens, Greece. Silver and copper alloy coins with various types surface corrosion ground deposits studied, using Q‐switched (QS), long pulse (LP) free‐running (FR) Nd:YAG lasers a range laser‐pulsing parameters wet surfaces. A comparison among different laser was made, an optical fibre delivery system focusing subassembly, or help x ‐ y microadjustable stage. It discovered that...
Biophotonics techniques are applied to several fields in medicine and biology. The laser based techniques, such as the induced fluorescence (LIF) spectroscopy optical coherence tomography (OCT), of particular importance dermatology, where radiation could be directly tissue target (e.g. skin). In addition, OCT resolves architectural properties that might useful tumour discrimination parameters for skin well ocular non-invasive visualization. Skin tissues complex multilayered inhomogeneous...
The political problems in Late Roman Empire caused significant changes the coin technology. silver content dropped severely and a new technology, all mints operating around Empire, was introduced. For production of these coins, copper based quaternary alloys were used their surface covered by amalgam plating layer. Hoards coins have been recovered thousands from across however, treatment has problematic. Both mechanical chemical cleaning results damage or complete destruction thin use laser...
Laser induced fluorescence spectroscopy and photodynamic therapy (PDT) are techniques currently introduced in clinical applications for visualization local destruction of malignant tumours as well premalignant lesions. During the laser irradiation tissues diagnostic therapeutic purposes, absorbed optical energy generates heat, although power density treatment light surface illumination is normally low enough not to cause any significantly increased tissue temperature. In this work we tried...
This work investigates the influence of pulse duration and wavelength on laser cleaning thin silver plating layers found in late Roman coins. Comparative tests were performed using Nd:YAG (1064 nm 532 - 6 ns), GaAlAs diode (780 90 ps) Ti-Sapphire regenerative amplifier (800 100 fs) systems. The results plated areas characterised by high resolution optical microscopy, SEM-EDX, XRF micro-profilometry.
The number of non-melanoma skin cancers is increasing worldwide and has become an important health economic issue. Early detection treatment cancer can significantly improve patient outcome. Therefore there increase in the demand for proper management effective non-invasive diagnostic modalities order to avoid relapses or unnecessary treatments. Although gold standard diagnosis biopsy followed by histopathology evaluation, optical tools have obtained increased attention. Emerging minimal...
Laser cleaning tests were performed on ancient (Roman and Byzantine) coins, which belong to the collection of Numismatic Museum Athens, Greece. Coins with various types surface corrosion studied, using Q-switched Nd:YAG, CO<sub>2</sub> Er:YAG lasers a range laser pulsing parameters dry wet surfaces. A section each object was cleaned mechanically, by conservators museum in order show results this method. It discovered that influenced type coins. X-ray fluorescence applied as analytical...
In dermatology, biophotonic methods offer high sensitivity and non-invasive measurements of skin tissue optical properties, in various physiological pathological conditions. There are numerous processes, which can be examined characterized using diagnostic spectroscopy, as the monitoring aging, diagnosis benign malignant cutaneous lesions, dosimetry photodynamic therapy (PDT), etc. Several mathematical models have been used to calculate properties from experimental predict light propagation...