What is the most effective method to reduce the production of scatter radiation?

The amount of scatter radiation can be reduced in some cases by any of the following methods. By limiting the incident beam of x-rays to as small an area as possible. By using a low rather than a high kilovoltage. By the use of clearing grids which are still referred to as ‘Potter-Bucky’ or ‘Bucky grids’.

Why is collimation important in radiography?

Proper collimation is one of the aspects of optimising the radiographic imaging technique. It prevents unnecessary exposure of anatomy outside the area of interest, and it also improves image quality by producing less scatter radiation from these areas.

Why do we use high KV technique in CXR?

A high kilovoltage technique enhances the visibility of the lungs by reducing the contrast of the bony thorax and also has the advantage of better penetration of the mediastinum (4,6). For proper visualization of the mediastinum an additional penetrated film is often required (Fig. 3.1).

What does increased collimation mean?

As stated previously, collimation means decreasing the size of the projected field, so increasing collimation means decreasing field size, and decreasing collimation means increasing field size.

What are the advantages and disadvantages of digital radiography?

Compared to conventional radiography and CR, DR systems are able to produce better quality images at lower X-ray exposures. With some DR systems, it is unnecessary to use a grid. Probably the biggest disadvantage of digital radiography is the cost of replacing existing radiographic equipment.

What are some advantages to digital radiography?

Digital Radiography Advantages: Reducing Cost and Space Reduced radiation. Reduced cost due to the elimination of chemical processors, processor maintenance, and filing and mailing jackets. Reduced space requirement — no dark room is required, and the need to dedicate space for cabinets of analog images is eliminated.

What are the advantages of using high kVp techniques?

The use of high kVp and low mAs techniques will reduce the dose to the patient. Higher kVp results in more free transmission, therefore the patient is absorbing less of the dose. Increasing the kVp by 15 percent will double the density in the radiograph and reduce patient dose in comparison to doubling the mAs.

How does kV affect image quality?

As milliampere seconds increase, perceptual image quality increases gradually from 0.4 mAs to 4 mAs, after which perceptual image quality begins to deteriorate. When kilovoltage increases to within the range of 40 kV to 55 kV, perceptual image quality increases; image quality remains stable after 55 kV.