Description
Specifications
| Product Type | Anti-scatter X-ray grid |
| Sizes | Several, from about 11 x 13 to 18 x 18 inches |
| Grid Ratios | 4:1, 6:1, 8:1, 10:1, 12:1 |
| Lines Per Inch | 85, 103, 150, 178 |
| Focal Range | 34 to 44 in and 40 to 72 in (by option) |
| Grid Type | Linear and criss-cross |
| Made In | South Korea |
How to Choose an X-Ray Grid
The right grid depends on three choices. Grid ratio sets how aggressively the grid cleans up scatter: a higher ratio, like 10:1 or 12:1, traps more scatter and sharpens contrast, but it needs tighter alignment and a bit more dose, while a lower ratio, like 6:1 or 8:1, is more forgiving to position. Lines per inch, or grid frequency, runs from about 85 to 178; a finer line count hides the grid lines better, which matters for digital work.
Focal distance has to match your tube to image distance, so a grid rated 34 to 44 inches suits table work, and one rated 40 to 72 inches suits a chest or a longer distance. As a rough guide, a skull or a general study runs well at 103 lines and a 10:1 ratio at 36 to 40 inches, a chest moves to a 10:1 or 12:1 at 60 to 72 inches, and a CR or DR chest often uses a parallel grid at 150 or 178 lines.
Features
- Traps scatter radiation, so the radiograph comes back sharper and higher in contrast.
- Grid ratios from 4:1 to 12:1, so you can match cleanup to the exam and the dose.
- Line counts from 85 to 178 per inch, including fine counts that hide grid lines on digital work.
- Focal ranges for table work and for longer chest distances.
- Sizes from about 11 by 13 to 18 by 18 inches to fit common cassettes and DR panels.
- Drops into a cassette, a DR panel protector, or a grid encasement.
Frequently Asked Questions
What does an X-ray grid do?
It traps the scattered radiation that fogs a radiograph, so the image comes back sharper and higher in contrast. The grid sits between the patient and the image receptor.
Which grid ratio should I use?
A higher ratio, like 10:1 or 12:1, cleans up more scatter and sharpens contrast, but it needs tighter alignment. A lower ratio, like 6:1 or 8:1, is more forgiving of position. Match the ratio to the exam and the dose.
How do I pick the focal distance?
Match it to your tube to image distance. A grid rated 34 to 44 inches suits table work, and one rated 40 to 72 inches suits a chest or a longer distance.
Does it work with a DR panel?
Yes. The grid drops into a cassette, a DR panel protector, or a grid encasement. For weight-bearing and equine work, the weight-bearing tunnel protects the panel underneath.
