Diagnostic Microscopes: Functions and Uses in a Variety of Medical and Biological Fields
Diagnostic microscopes are often used to complement other medical or surgical work. They are designed specifically to provide the appropriate image of the specimen to be observed and evaluated. Diagnostic microscopes are equipped with high resolution optical lenses for optimum image quality and user-controlled lighting for the regulation of the intensity of illumination. This type of microscopy is often used for scientific and medical research and study.
What is diagnostic microscopy?
Diagnostic microscopy is a highly technical form of optical microscopy. It uses high resolution optics to produce clear, sharp images of the sample specimen. As its name implies, this type of microscopy is used for the examination, observation and evaluation of the specimen in order to arrive at an accurate diagnosis. This is the type of microscopy that is extremely useful for the evaluation of health problems and the examination of certain diseases, whether they are human or animal related.
Uses of diagnostic microscopes
Diagnostic microscopes are used in a variety of important applications, one of which is surgery. The diagnostic microscope does not have all the sophisticated features of a surgical microscope, but it does offer enhanced viewing power, enough to produce details not readily viewed or available with more conventional forms of microscopes.
Diagnostic microscopes are often used in practical applications such as pathology, histology and cytology and very often, in ear, nose and throat examinations and surgery. They are also commonly used in dermatology, biophysics, physics and biomedicine.
Characteristics of diagnostic microscopes
The magnification power of the diagnostic microscope offers an excellent view of the specimen’s image. This allows the operator to evaluate minute contrasts and abnormalities or irregularities in the sample. In examination of live patients, they also offer enough flexibility and viewing power to ensure that areas to be examined are viewed effectively. Some brands also use an automatic refocusing stage, which virtually eliminates the need for the operator to refocus after loading a fresh slide. This allows specimens to be handled safely, minimizing any risk of damage or contamination.
Another area where diagnostic microscopes excel is in their depth of field. Conventional microscopes often feature narrower depth of field, which usually requires frequent manipulation of the focusing mechanism in order to produce an appropriate image. With diagnostic microscopes, the depth of field is wider, allowing distant and near objects to be viewed in sharp, clear focus. This makes them ideal for use during ENT examinations, where narrow passages may be viewed efficiently.
Since they are used over long hours, the optical system in diagnostic microscopes is designed to relieve eye strain, whether or not viewing conditions are ideal. Furthermore, the instruments themselves are ergonomically designed and are probably are the type of optical microscopy that with the highest standards in manufacturing.
In terms of illumination, most diagnostic microscopes use transmitted lights that can withstand from 3,000 to 4,000 hours of use. Lamps can also be substituted using built-in LED light sources.
Some of the most common diagnostic microscopes employ phase contrast microscopy, polarizing microscopy and confocal scanning microscopy techniques, among other things.
Phase contrast microscopy is a vital tool in medical and biological research and as such, is very helpful as a diagnostic instrument. This type of diagnostic microscopy technique allows examination of live cells and tissues. Phase contrast microscopes are often used in diagnostics if living specimens are being observed and studied. Cellular components, for example, are difficult to view using conventional microscopy such as bright field because it requires staining the specimen. With phase contrast microscopes, diagnostics can be performed on the specimen in its natural condition.
Polarizing diagnostic microscopes are often used in biological research, particularly for the examination and evaluation of DNA and other biological molecules using a technique called birefringement.
Although polarizing microscopes are often used in geological applications, they are also extremely useful in biomedical research and biochemistry, which makes them an invaluable tool in diagnostics.
Confocal microscopy is considered as one of the most important advances made in the field of optical microscopy, particularly for diagnostic microscopes. For one, it allows in-focus visuals from specimens that are thicker than usual, particularly because this type of microscope allows the slicing of the optical image and the use of digital processing techniques. Confocal diagnostic microscopes also allow 3D representations of the specimen being evaluated.
For diagnostics and other related biomedical applications, confocal diagnostic microscopes are often used for viewing fluorescent specimens such as live cells. They are extremely helpful in viewing and analyzing cell structures, proteins, genes, cell membranes and gradients and even subcellular components.
Medical imaging and diagnostic microscopes
Medical imaging is an important component or sometimes, supplement to diagnostic microscopes. These are processes and techniques used by doctors and scientists to produce images of live organic matter and biological specimen. The human body, for example, is a common subject of medical imaging to produce images for the study of bodily functions, anatomy, abnormalities and diseases. Used in conjunction with diagnostic microscopes, medical imaging provides a valuable tool for the proper observation and evaluation of the image.
