What is an artifact in medicine. Medical encyclopedia

Artifact (from Lat. Artefactum - artificially made) - .. 1) The subject made by man ... 2) The process or education that is not characteristic of the object being studied is normal and usually arising during its study. Eg Large encyclopedic Dictionary

A large number of color artifacts There may be a negative impact on the interpretation of the results of the CSDE or distort it. Some of them are inevitable and can actually be used to increase the accuracy and sensitivity of the diagnosis.

Interference: One of the reasons may be too high the value of the color gain. Interference can represent a significant problem, but in some cases they are called intentionally and are used to detect slow blood flow.

Artifacts of motion: Motion artifacts (seasy outbreaks) also make it difficult to research. Them possible reasons There may be transmitted pulsations of the heart (for example, in the study of vascularized neoplasms in the left lobe of the liver) and the ripple of the aorta.

Overlay: This artifact represents the problem when the color scale of the device is set to a certain range of speed (PCP), which does not correspond to the blood flow rate in all vessels under study. This leads to the appearance of unwanted color inversion zones.

Artifact confetti: It has the form of numerous small color pixels, is an important feature of a post -tenotic turbulent flux.

Artifact flicker: It has a large diagnostic value. It occurs when the pixels of the artifact of confetti or color strips (red and blue pixels) are created by structures with very strong sound-refrigerant properties (stone, cholesterol polyp), located in acoustic shadow. Flicker arises due to the vibration of the reflective surface due to falling on it sound waves. This artifact may be useful in diagnosing stones in the kidneys and other formations.

Definition: In ultrasonic diagnostics, artifacts are acoustic images that are not correlated with anatomical structures. Their emergence is due to the fact that in the process of visualization, not all physical phenomena are taken into account.

Value: When interpreting ultrasound images, artifacts may have a different value. Some of them, such as the ultrasound of the ultrasonic beam, can interpret the ultrasonic picture interpretation, while others, in particular an acoustic shadow, are diagnostic.

The artifact side petals

Incorrect object display On the screen due to echo signals produced by side petals accompanying an ultrasonic beam.
The artifact side petals It has the form of a curved line in the anechogenic structure.

Value: These artifacts may be mistaken for echo signals, departing from the internal structures of cystic organs (partitions, precipitation).
Differentiation with a present object: Changing the angle of inclination of the sensor or the scan plane easily leads to the disappearance of the artifact.

Most modern people understand the meaning of the word "artifact" through the prism of the gaming world. That is, the value is perceived as an amazing and mystical find of humanity, which has an unprecedented force or some symbolism. And the older people can not really identify it at all. Only asked: artifact, what is it?

Artifact: Word meaning

For the first time, the word uttered on latin. Installed: This is a complex merge of two foundations "Art" and "Fact", and in the literal translation indicates "Artificially made". The place where the term first began to use is impossible to call. Due to the fact that in each ethnic group in ancient times there was its own designation that corresponded to the word under consideration. There are minor assumptions that in the Middle East first uttered the term remotely resembling the "artifact" sound. Definition, unfortunately, to bring unrealistic so to please all branches of civilization.

A little later, with the development of civilization, the word began to circumvent other values. Because of the ease of memorization and ease of statement, in almost every field of human activity, this word is used. This includes not only a computer sphere:

• Culture.
• Archeology.
• History.
• Medicine.
• Programming.

Path Word Through Time Cultural Artifact

The word sounds great, and easily gives epic offering. It is worth recognizing it. In modern culture, it is fairly easy to find all the values \u200b\u200bof the word artifact. Wikipedia offers small explanations regarding different turns of human development.

All cultureologists say that initially this word determines any material product created by a person. Why? It is known that the word "fact" in antiquity indicated accuracy in the intangible world. That is, the facts called said words with the mouth of a person who was confirmed and confessed true. Something similar happened and using the word chosen by us. It is believed that in culture there is a division of only two branches:

• Material world (all that can be seen to felt).
• The spiritual world (tangible only by reason or through the soul).

However, most cultural scientists stand out and a completely new branch - human relations. This is all underway that absolutely any information that is present in our world has no specifics, and leads to the creation of a phenomenon of symbolism. Such a process has occurred with the "artifact". The value went beyond the scope of its branch, and could absorb some other knowledge of yourself. Yes, it all looks naive enough. However, no one has not yet provided evidence of such a theory of such a theory.

The concept of artifact in other fields

Archaeological artifact called A certain material object that was found due to excavations and is provided as the heritage of mankind, and in a single instance.

Programming, as science appeared relatively recently, has a rather narrow specialization, therefore oversaturated by terms. And among them, the word "artifact" could find echoes. They denote some of the created element of a programmed final product that can function from the effectiveness of this element. So to speak, the missing puzzle to touch the integrity of the whole picture.

In laboratory studies Also present the word artifact in generally Terms. Most often, artifacts are called a certain reaction, obtained due to intentional interference in the naturalness of running processes, or a random reaction, which turned out due to unplanned actions. Sometimes it accompanies synonyms "miracle" or "really". Most often, this is happening in biological and physical and mathematical scientific centers.

Let's refund a little to the beginning of the article and again plunge into the game and cinematographic world. In addition to what is already said, several offers should be doc.

In the world of games, the word "artifact" Always associated with a mysterious powerful object with an incredible force. Distinctive features There were complex obstacles and quests for its receipt, deep history and mandatory impact on the outside world and on a person who took advancing him. Easy to remember the famous game of the beginning of the third millennium, Warcraft. It can clearly consider any artifact. The essence of the Gamer's Artifact is that it is most often, is a material vessel for intangible force. So to speak, is the unifying link of the two main branches of culture.

However, all this "Gamersky" product of the artifacts had the beginning of the cinema. For the first time, people began to use the word artifact in active vocabulary thanks to the movie. It was how it gave the development of this term in the computer world. All features are voiced above, one way or another, and to cinema.

It is difficult to imagine a good fantastic book without an excellent prescribed world, a strong and memorable protagonist, no less charismatic villain and an important artifact, because of which, in general, there are further actions. Who decided to use this word for the first time as a term for a certain item value, possessing and power, Install is unlikely to succeed. Nowadays, thousands of different books are written in the world in the world, where it will be possible to meet this word several times. Strange what many writers yes and modern people Perfectly understand the meaning of the word, to explain it at the proper level is unable.

It is enough just to take one famous king of the last century "The Lord of the Rings" Tolkien. It would seem that in all the canons in the book there is only one mysterious subject - the ring is allocating, however, in the narration they come across other items - the staff of the Mages, the sword of King Gondora, Mifrill and so on. It would seem that they do not correspond to some criteria of "acirts", but still considered those. The term artifact whose definition is quite blurry, changes.

For the younger contingent of readers, we give an example on the books about Harry Potter. It has no main artifact. But are present many secondary artifactsthat are needed only for the disclosure of characters and temporary use to achieve the goal. Mantle invisible, magic wand, soul stone and so on. Again, it is almost impossible to specify this term without going beyond the verge of literature.

(Lat. Artefactum artificially made)
the phenomenon observed in the study of the object is unusual for this object and distorting research results.

Watch value Artifact in other dictionaries

Artifact - [TE], -a; m. [from lat. Arte - artificially and Faktus - Made]. Book.
1. A subject, made or processed by a person (especially as an object of archaeological research). Collection........
Explanatory dictionary of Kuznetsov

Artifact - - anyone
A system created by man to perform a function or achievement
Objectives: airplane, symphony,
Ministry and others.
Economic Dictionary

Artifact - (microbiol.) - A phenomenon that is unuschated by the observed object leading to distortion of the results of the study. With a microscope, the study method A occurs as a result ........
Dictionary of microbiology

Artifact - (Lat. Artefactum Artificially made) The phenomenon observed in the study of the object, unusual for this object and distorting research results.
Great Medical Dictionary

Hospital artifact in psychiatry - degradation of the personality and regression of the patient's behavior in a psychiatric hospital caused by the environment and independent of the disease itself.
Great Medical Dictionary

Artifact irritation in electrophysiology - deviation of the curve of the recorded process at the time of the application of irritation due to the immediate physical action of the irritant on the fabric and the perceive device.
Great Medical Dictionary

X-ray artifact - artifact with a x-ray study in the form of shadows on an x-ray screen, film or a plate that are not related to the features of the object under study.
Great Medical Dictionary

Artifact - (from lat. Artefactum - artificially done) - .. 1) The subject, made by man ... 2) Process or Education, Uncharacteristic to the object being studied normally and arising ........
Big Encyclopedic Dictionary

Artifact - (from Lat. Artefactum - artificially made), a process or formed, not characteristic of the body normally, but caused by the method itself. A. Usually due to the methodology .........
Biological Encyclopedic Dictionary

Artifact - (Eng. Artifact, ArteFact) .1 In cultural and historical psychology A. - an artificial means of activity: guns and signs (including word, symbol, etc.). Syn. (but not always) the mediator .........
Psychological Encyclopedia

Artifact clinic - word formation. Comes from Lat. Artefactum - artificially made and Greek. Kline - bed, bed. Category. Clinical disorders. Specificity. It occurs in patients ........
Psychological Encyclopedia

Cultural artifact - artifact, which has a culturally determined form and function.
Psychological Encyclopedia

Starist artifact - Invalid or misleading logic output obtained as a result of the bias of the experimenter when collecting or analyzing data or interpretation of these results.
Psychological Encyclopedia

Cultural artifact - cm artifact, cultural.
Psychological Encyclopedia

Statistical artifact - See artifact, statistical.
Psychological Encyclopedia

Artifact (Artifact, ArteFact) - (in microscopy) the structure observed in the tissues under the microscope, whereas it is absent in the living fabric. Artifacts arising due to insufficient fixation or ........
Medical Dictionary

Artifact - (from Lat. ArteFactum - artificially made) - English. artefact / artifact; it. Artefact. 1. Man created by a person. 2. Processed by prehistoric man tools of labor.
Sociological Dictionary

Artifact research - - - English. artifact, research; it. Forschungsartefakt. The process, phenomenon, education that are not peculiar to the object being studied as such and arising during its study as a result ........
Sociological Dictionary

Starist artifact - - - English. artifact, statistical; it. Artefakt, Statistischer. Rod artifact research when collecting and processing statistical. data.
Sociological Dictionary

Artifact (from Lat. - Artificially Made) - - In the usual understanding, any artificially created object; In culturalology, this concept came from archeology, where it was used to distinguish nature. and arts. objects .........
Philosophical Dictionary

Cultural artifact - Interpretative embodiment K.L. Forms of cultural in the CONKR. material product, behavioral act, social structure, inform. Message or evaluation judgment .........
Philosophical Dictionary

What is "artifacts" in the pictures of MRI?

Artifacts (from lat. Artefactum) are the errors made by a person in the process of research. Artifacts significantly worsen image quality. There is an extensive group of physiological (in other words related to human behavior) artifacts: motor, respiratory, artifacts from swallowing, blinking, random unmanaged movements (tremor, hypertonus). All artifacts associated with the human factor are easily overcome if a person in the process of research is completely relaxed, breathing smoothly and freely, without deep swallowing movements and frequent blinks. However, in medical practice, cases of use of light anesthesia.

How old can I do MRI to children?

Magnetic resonance tomography has no age limit, so it can be held for children from birth. But in view of the fact that during the MRI procedure, immobility must be observed, the surveys of small children are carried out under anesthesiological manual (surface anesthesia). In our center, research under anesthesia is not carried out, so we will examine children exclusively from the age of seven.

What are there contraindications to MRI?

All contraindications to the conduct of MRI can be divided into absolute and relative.
The following patient features are absolute contraindications: the presence of a pacemaker (driver's rhythm driver) and other implants electronic devices, the presence of ferrimagnetic (iron-containing) and electric prostheses Split (after reconstructive operations on the middle ear), hemostatic clips after operations on brain vessels, abdominal cavity or lightweight, metal fragments in the field of the eyeball, large fragments, fractions or bullets near vascular-nerve beams and vital bodies, as well as pregnancy up to three months.
Relative contraindications include: claustrophobia (fear of a closed space), the presence of massive non-ferrimagnetic metal structures and prostheses in the patient's body, the presence of Navy (intrauterine spiral). In addition, all patients with magnetosuppite (non-ferrimagnetic) metal structures can be examined only after a month after the operational intervention.

Does it be necessary to have directions from the doctor to pass MRI?

Direction of a doctor - an optional condition for visiting the center of MRI. We are important to your health care, consent to the survey, as well as the absence of contraindications for MRI.

I get headaches often. MRI of what area needs to be done?

Anyone is familiar with a headache, but if she repeats suspiciously often, of course, it cannot be ignored. We recommend the patient with strong headaches to pass MRI brain and its vessels. In some cases, this may not be enough, because not always the cause of headaches is related to the pathology of the brain. Headaches may be a consequence of the cervical osteochondrosis, so our specialists are additionally advised to pass the MRI of the cervical spine and neck vessels.

How long does research on MRI last?

The average duration of one study in our center ranges from 10 to 20 minutes, however, it all depends on the identified changes: sometimes to clarify the disease, the radiologist can expand the research protocol and resort to the use of contrast gain. In such cases, the study time increases.