Traditional Culture Encyclopedia - Photography major - What does the film inspection DX mean?
What does the film inspection DX mean?
Among them, DX corresponds to the image of DR, and the image in DX mode includes not only the gray level of the image, the name and age of the patient, but also the position information (such as whether the patient stands forward or left when taking pictures). The image mode taken by CR is CR, which does not contain body position information. Of course, if the image taken by DR does not need body position information, it can also be simplified as CR mode transmission.
Extended data:
Physical examination type:
1. Angiography: or arteriography and angiography, it is to irradiate the inside of the human body with X-rays to observe the distribution of blood vessels, including arteries, veins or atria.
2. Cardiography: The contrast agent is quickly injected into the heart cavity or blood vessel through the cardiac catheter, so that the heart and blood vessel cavity are developed under X-ray irradiation. At the same time, the development process of heart and vascular cavity is photographed by rapid photography, television photography or tape recording.
From the development results, we can see the blood flow sequence containing contrast agent and the filling situation of cardiac blood vessels, so as to understand the physiological and anatomical changes of the heart and blood vessels. This is a valuable method to diagnose cardiovascular diseases. ? [2]?
3. Computed tomography (CT), or computed tomography, can be divided into X-ray CT(X-CT), ultrasonic CT(UCT) and γ-ray CT(γ-CT) according to the different rays used.
4. Mammography: It uses low-dose (about 0.7 millisieverts) X-rays to examine human (mainly female) breasts. It can detect various breast tumors, cysts and other lesions, which is helpful for early detection of breast cancer.
5. Positron emission tomography (PET): It is a nuclear medical imaging technology that provides three-dimensional and functional images for the whole body. At present, it is the only technique for imaging function, metabolism and receptor through anatomy and morphology, which has the characteristics of non-trauma and is one of the best means for clinical diagnosis and treatment of tumors.
6. Nuclear Magnetic Resonance Imaging (NMRI): The emitted electromagnetic wave is detected by the external gradient magnetic field, and the internal structure of the human body can be drawn accordingly.
7. Medical ultrasonic imaging: Using the physical characteristics of ultrasonic waves, the transmission, reception and conversion of ultrasonic waves and the rapid analysis, processing and imaging of electronic computers are realized through electronic engineering technology.
So as to judge the physical characteristics, morphological structure and functional state of human soft tissues, and visualize muscles and internal organs, including their size, structure and pathological changes.
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