X-RAY GRID, 35 x 43 cm
Valid Article
X-RAY GRID
Definition
A portable anti-scatter x-ray grid filters out randomly deflected radiation that can blur a radiograph. It is positioned between the patient and the x-ray cassette and allows only the primary radiation to pass to the cassette while absorbing secondary (or scattered) radiation which contains no useful information. It improves image quality and reduces patient dose.
Specifications
Material
An x-ray grid is a thin plate constructed of lead strips and an aluminium transparent interspacer (radiolucent) bound together in a flat structure which is covered for strength and durability.
Technical specifications
Please ensure that the following specifications are observed:
- parallel
- 40 lines/cm
- grid ratio 8:1
- 35 x 43 cm
- carbon fibre protective cover (or similar)
Dimensions
Outer dimension with cover: +/- 39 x 47 cm
Instructions for use
The x-ray grid is used as an accessory with a mobile x-ray unit when imaging large body parts such as the pelvis, abdomen and spine. It is placed on top of the x-ray cassette, underneath the patient. Ensure that the grid is placed flat and perpendicular to the x-ray beam.
Maintenance
Clean regularly with warm, soapy water.
MSF requirements
For further information please contact the Diagnostic Imaging Working Group (diagnostic-network@msf.org).