What are the components of an X-ray camera?

What are the main components of the X-ray machine?

I don't know if you are asking about three X-ray machines: F (only for fluoroscopy), R (for photography) and R/F (both for fluoroscopy and photography).

Roughly: X-ray tube-beam limiter-bed (supporting patients to lie/lean) -X-ray receiver (film, imaging board and image intensifier)-high voltage generator-electronic control system-image display module (without pure film photography)-doctor's console. X-rays are excited by electrons in the inner layer of atoms. The following X-ray machine from Baidu is a device used to generate X-rays. It can be divided into industrial X-ray machines and medical X-ray machines. Industrial X-ray machines can be divided into hard X-ray machines and soft X-ray machines according to the intensity of rays produced. Diffraction analyzers used for physical and chemical detection belong to soft rays, while hard rays are used to detect large and thick materials. The radiation can be generated by high-voltage electricity, such as 100Kv or 300Kv applied to the X-ray tube, and the generated radiation can penetrate the 5-50 mm steel plate. The electron accelerator method can produce rays that penetrate the steel plate above 100 mm, and the machines using high voltage electricity can be divided into portable machines and mobile machines (fixed machines). The principle and structure of X-ray machine, the discovery of X-ray 1895 German physicist W. C.R _ NTGEN used a sealed glass tube with two metal electrodes (one called anode and the other called cathode) embedded in it, and applied tens of thousands of volts at both ends of the electrodes, and pumped the air out of the glass tube with an air extractor.

What is the main part of the camera?

The camera consists of optical system, circuit system and mechanical system.

Any camera, from a large landline in the studio to a small treasure in the palm of your hand, or even a simple "electronic eye" in the street, regardless of the size and price, the camera equipment is composed of these three basic systems. Moreover, the failure of any one of these three systems will affect the normal work of the camera and even completely paralyze the equipment. For the master in charge of maintenance, they often look for problems from these three basic angles. And for us ordinary users? Mainly to remind us that we must do our best to protect the camera. For example, pay attention to the cleanliness of the camera and avoid using it in places with high dust, otherwise the optical system will be seriously damaged; At the same time, places with high humidity are also very dangerous, such as rainy days and seaside, and the water mist is very thick, which has a great influence on the circuit system; In the process of placement and transportation, we must pay special attention to shock prevention, which is the requirement of the camera precision mechanical system.

If the three-system theory of camera composition is too abstract, then these five points are much more specific. The camera consists of lens, photoelectric conversion system, video recording system and monitoring recording system.

X-ray detection equipment and equipment (1)

1. Briefly describe the basic structure of the X-ray machine and the functions of each part.

_ Answer: The X-ray machine consists of four parts: X-ray generator, X-ray tube, high-voltage generator, cooling system and control system.

_ X-ray generator: The core component is the X-ray tube.

_ High-voltage generator: The core component is high-voltage transformer.

_ Cooling system: The core components are circulating pump and cooling medium.

_ Control system: responsible for the coordination of the whole system, including the adjustment of components, display devices and protection systems.

Please describe the basic structure of X-ray tube and the process of X-ray generation.

_ Answer: The X-ray tube consists of cathode, filament and emitted electrons; Cathode head: filament support, focusing electrons. Anode: target, containing electrons, emitting X-rays; Anode body: supporting the target and transferring the heat of the target; Anode cover: absorb secondary electrons, reduce the charge on the tube wall and improve the working stability; Shell and tube: connect the two poles to keep the vacuum degree.

_ _ I'm not afraid of it _ Ray.

_ _ _ _ _ _ _ Furfural Payment Threshold

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

3. Main characteristics of γ -ray sources commonly used in industrial flaw detection.

A: The main characteristics of γ -ray sources are energy, specific activity, half-life and source size.

Please describe the main working parameters of the X-ray machine.

Answer: exposure time, tube voltage and tube current.

5. Draw the limit working curve and workload characteristic curve of the X-ray machine and briefly explain them.

____X-ray machine working limit curve

___X-ray machine workload characteristic curve

The working load characteristic curve of X-ray machine gives the working characteristics of X-ray machine, so it also gives the applicable materials, thickness range and working application characteristics.

_ From the workload characteristic curve of the X-ray machine, it can also be seen that the tube current that can be used is related to the tube voltage that can be used, and is also limited by the focus size.

6. Briefly describe the basic structure of γ -ray machine and the main requirements for its performance.

Answer: Gamma rays are mainly composed of five parts: source assembly (sealed gamma ray source), source container (main body), source conveying (guiding) pipe, driving mechanism and accessories.

7. Briefly describe the main performance of commonly used gamma ray sources.

Answer: (1) High energy and large penetration thickness.

_ _ (2) Lightweight and compact, suitable for outdoor and in-use equipment.

_ _ (3) High efficiency and circumferential panoramic exposure

_ _ (4) continuous movement, not affected by external conditions.

_ _ (5) Low failure rate.

_ _ [6] Equal penetration, low price.

8. Briefly describe the main items that should be paid attention to when using X-ray machine and γ -ray machine.

Answer: (1) Precautions for operating and using Y-ray machine:

_ _ _ _ (1) Preparation, and check whether the _ _ _ points of relevant departments of Y-ray machine are in good condition.

_ _ _ ② Host installation

_ (2) Matters needing attention in using X-ray machine

_ _ _ (1) Train the machine carefully.

_ _ _ ② Reliable grounding

_ _ _ (3) Check the fluctuation value of power supply (≤ 10 rated power _ _ _ _ _ _ _)

_ _ _ (4) Preheat in advance (the filament should be preheated for 2 minutes before sending high voltage).

(5) whole process cooling

_ _ _ ⑥ Rest time (1: 1)

9. Briefly describe the main types and characteristics of accelerators commonly used in radiographic testing.

A: The commonly used accelerator is the traveling wave electron linear accelerator, which can be made very light and easy to operate in the range of 1 ~ 15 MeV. Compared with the electron induction accelerator, it has a larger volume, but the electron beam intensity is high, and the X-ray intensity generated is about 10 ~ 100 times that of the electron induction accelerator.

10. Draw the characteristic curve of the film and briefly explain it.

(1) toe: the AC part of the curve, also known as the underexposed area. In this part, the increase of blackness is very slow relative to the increase of exposure.

(2) The normal exposure part is the CD part of the curve, which is approximately a straight line. In this part, the blackness is approximately proportional to the logarithm of the exposure. The radiogram blackness specified in industrial radiographic inspection is within this range.

(3) Shoulder: that is, the DE part of the curve, also known as overexposure area, where the blackness increases slowly with the increase of exposure.

(4) The inversion part is the part after E in the curve, which was previously called negative induction area. With the increase of exposure, the blackness of this part not only does not increase, but decreases after adding T.

What parts does the high-frequency digital X-ray machine consist of?

The general X-ray machine consists of X-ray emitter (X-ray tube), controller (control panel), high-voltage connecting cable and cooling system (air-cooled fan, water-cooled or oil-cooled circulating pump).

An X-ray machine is not digital. Digitization generally refers to the use of detectors (such as IP boards, such as amorphous silicon array detectors) to receive rays, so that the collected rays are displayed by computers after conversion. I.e. displaying a digitized image.