5. Πλεονεκτήματα και Περιορισμοί της Διαγνωστικής με Λέιζερ

Despite their many advantages, laser-based diagnostic systems also come with technical, biological, and practical limitations.

A key limitation is the penetration depth into tissue, which is fundamentally restricted by light scattering and absorption. While near-infrared lasers can penetrate several millimeters into soft tissues, they are less effective for imaging deep organs or dense structures such as bones. This makes them less suitable for comprehensive internal imaging compared to methods such as magnetic resonance imaging (MRI) or computed tomography (CT) (Barsom et al., 2016).

Furthermore, tissue heterogeneity can complicate interpretation. Different tissue types, hydration levels, or pigmentation may alter scattering and absorption properties, requiring careful calibration and sometimes leading to inconsistent results. In fluorescence-based diagnostics, issues such as photobleaching or autofluorescence can degrade signal quality or cause confusion in results (Zafar et al., 2021).

Cost and complexity also represent significant barriers to widespread adoption. High-quality lasers, optical detectors, and cooling systems can be expensive, while maintaining precise alignment and calibration requires technical expertise. Although miniaturization is advancing, many systems still require controlled environments or trained personnel, limiting their use in rural or underfunded healthcare settings (Ibrahim et al., 2022).

Additionally, safety concerns must be carefully managed. Exposure to high-intensity laser beams, especially in the visible or near-infrared spectrum, can pose risks to the eyes and skin. Regulatory standards from the IEC (International Electrotechnical Commission) and ANSI (American National Standards Institute) classify lasers by risk and define safety measures for clinical use, such as protective eyewear, signage, and beam containment (Albrecht et al., 2013).