When is the grid used?
Ⅹ線画像のコントラストを改善したいときに使ってください。
When X-rays pass through the subject, secondary X-rays known as scattered rays are generated. When these scattered rays
reach the image receptor, the image contrast decreases, resulting in a blurry, hazy image.
The grid acts as a filter to eliminate scattered rays.
By removing scattered rays, the contrast of the image is improved, resulting in images that are easier to diagnose.
In addition, scattered radiation has a greater impact on the image when the subject is 10 cm or thicker. Using a grid is effective not only
for imaging the torso—such as the chest and waist—but also when imaging the arms and legs.
