In order to be able to understand perfectly the meaning of the term "imaging", it is necessary to establish its etymological origin in advance. In this sense, we have to expose that it originates from Latin and Greek. Since it is composed of these two elements: the Latin noun "imago", which can be translated as "portrait", and the Greek word "lodge", which is equivalent to "study of".
The idea is used to name the set of methods and procedures. That allow images of the human body for clinical or scientific purposes. Imaging or medical imaging, therefore, is used to reveal, diagnose and examine diseases or to study the anatomy and functions of the body. Radiology, medical thermography, endoscopy, microscopy, medical photography and ophthalmic photography are part of these techniques. Other procedures that allow obtaining data that can be represented as maps or schematics (such as electroencephalography) can also be included within the imaging.
The great advantage of imaging is that it allows you to obtain internal images of the body without having to open it. Tomography, for example, is a single-plane imaging method that is performed by moving an X-ray tube over the patient.
So important is the imaging technology and all the techniques that integrate it that currently exist in the world from university to degree programs, with the clear objective that those who wish to specialize and form in this area in order to be qualified professionals and highly competent .
In this sense, people who are encouraged to carry out any of these educational proposals should study on some issues. Such as anatomy, cell biology, radio logical techniques, neurology, and scientific work, image processing system, scientific methodology, public health or radio logical physics, among other.
The magnetic resonance image, on the other hand, appeals to the use of magnets to polarize the hydrogen nuclei in the water molecules of the tissues. That excitation generated by magnets in hydrogen nuclei can be captured and encoded spatially to generate images of the body.
Each of the images that are taken by magnetic resonance are called cuts and have the peculiarity that they can either be stored and viewed on a computer or can be printed. The skull, abdomen, spine or heart are the parts of the body that usually undergo this type of test that is usually characterized by these signs of identity:
- It is completely painless.
- It is necessary that the patient is relaxed and does not move, as doing so will cause the images to be blurred.
- No recovery time required.
Fluoroscopy is an imaging technique that produces real-time images from a constant X-ray input. Thanks to contrast media (such as iodine), it is possible to visualize how the internal organs work.
Projection radiography, nuclear medicine and ultrasound are other imaging techniques.
What is the Medical Imaging?
Medical imaging means the set of techniques and processes used to create images of the human body, or parts of it, for clinical purposes (medical procedures that seek to reveal, diagnose or examine diseases) or for medical science (including the study of Normal anatomy and function).
As a discipline in its broadest sense, it is part of the biological image and incorporates radiology (in a broader sense), radiological sciences, endoscopy, medical thermography, medical photography and microscopy (e.g. for human pathological investigations). Measurement and recording techniques that are not primarily designed to produce images, such as electroencephalography (EEG) and magnetoencephalography (MEG) and others, but produce data that can be represented as maps (i.e. contain positional information), can be viewed As forms of medical imaging.
In the clinical context, the medical image is generally equated with radiology or clinical imaging and the medical professional responsible for interpreting (and sometimes acquiring) images, which is the radiologist. Diagnostic radiography (see X-ray) designates the technical features of medical imaging and medical images. The Radiology Technician (also known as Ray Technician) is responsible for acquiring medical images with diagnostic quality, although some radiological interventions are developed by radiologists.
As a field of scientific research, medical imaging constitutes a sub discipline of biomedical engineering, medical physics or medicine, subject on the context. Research and development in the area of instrumentation, image acquisition (e.g. radiography), modeling and quantification are normally reserved for medical physics, biomedical engineering and computer science. Research into the application and interpretation of medical images is normally kept for radiology and relevant medical sub disciplines in medical illness or area of medical science (neuroscience, cardiology, psychiatry, psychology, etc.) under investigation. Many of the techniques developed for medical imaging are also scientific and industrial applications.
Medical imaging is often used to designate a set of techniques that produce images of internal aspects of the body (without having to open it). In this restricted sense, medical images can be seen as the solution of the mathematical inverse problem. This means that the cause (the properties of the living tissue) is deduced from the effect (the observed signal). In the case of ultrasonography the probe is the set of ultrasonic pressure waves that are reflected in the tissue, and which show its inner structure. In the case of radiography, the probe is X-ray radiation, which is absorbed in different proportions by different types of tissue, such as bones, muscles or fat.
3 tips for taking good clinical pictures
Lighting (natural and artificial light)
In the photograph we work with two types of lighting: natural light and artificial light. Natural light is that which comes from the Sun, can be directly outside, or through a window. In the case of clinical photography, artificial lighting must be used, by means of flashes (which give an intense light in a very short moment of fractions of a second) or by means of continuous light lamps, which are easier to but they are large and produce heat.
There are rules that dictate how certain types of photographs should be taken. For medical photography, closed frames are necessary to show the pathology completely, and details of it. It is a good idea to include in the photograph some element (it may be a rule) of a known size, to have the correct scale of the object photographed at the moment of being visualized.
Camera settings should be optimal for the lighting condition, framing, and shooting situation. Most modern cameras work very well with automatic adjustments, but there are lighting or framing conditions that require controlling the aperture (the size of the light input) and the shutter speed (exposure time of the picture). Another very important factor in the settings is the color temperature or white balance; Adjusting this parameter well, we must see any type of light we use (flash, continuous, fluorescent, candle) as white light; this will make the objects appear with a natural color.