The multi-functional digital dynamic flat-panel DR is widely used in clinical practice due to its multiple functions such as digital photography, digital fluoroscopy, digital imaging, visualisation of high-definition spot films and real-time video preservation and playback.

During dynamic DR filming, scatter rays are generated during X-ray irradiation, which affects the picture quality. A common component in dynamic DR work, the filter grid, can help filter scatter rays, reduce grey haze and improve contrast, thus improving the imaging quality.

How does the filter grid work?

Scattered rays are filtered through multiple bars of fixed radius, which filter out this part of the scattered rays and try to retain only the rays coming straight in, thus improving the clarity of the image.

Is it necessary to use wire grids in all positions?

The answer is no. Since the grid absorbs some of the primary radiation while filtering out the scattered rays, the amount of exposure has to be increased accordingly. Therefore, after balancing the dose and the image quality, when the illuminated body is thin, the grid is not necessary because there are fewer scattered rays.

Perlove Multifunctional Dynamic Flat Panel DR has been designed from the ground up to meet the practical needs of clinical practice. The Perlove Multifunctional Dynamic Flat Panel DR is designed with a removable filter grid to meet the low dose requirements of thin locations such as extremities and specific populations such as gynaecology and paediatrics.

How to choose the focal length of the filter grid?

Generally, the focal length of the filter grid is different for different positions when it is installed on the frame and the film bed. Usually, when mounted on a frame, the focal length should be 1.8m, and when mounted on a bed, the focal length should be 1m. If the focal length of the filter grid is wrongly selected, it will lead to uneven images and poor image capture, which will affect the doctor's diagnosis.

In addition, a 1.8m dedicated filter grid can be used for pneumoconiosis screening applications, providing great value for immediate assessment and prevention of pneumoconiosis. Perlove's multi-functional dynamic flat panel DR comes standard with two filters, 1m and 1.8m, for the standard body position, which can further improve the image quality.

What are the advantages of high density wire grids?

The internal structure of a wire grid is made of many thin lead strips intersecting each other, and the density of the grid refers to the number of lead strips per unit distance. Therefore, high density grids are more effective than normal grids. Perlove's multi-functional dynamic flat panel DR is equipped with dual high-density grids, which can filter out scattered rays efficiently while being dedicated to a specific distance.

Although the grids can effectively filter out scattered rays, but also pay attention to the correct use and placement, such as: not to reverse the grids; X-ray center should be aligned with the center of the grids; when tilting the X-ray tube, the tilt direction can only be parallel to the direction of the lead arrangement, so as to give full play to the role of the grids, to obtain a clear and sharp image!

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