ISO Certified
Lead collimators
Lead is the most commonly used material for collimators, because of it's high density. Besides this, lead is the least expensive material for collimator purposes.
The holes of the collimator can be squarehole, roundhole or hexagonalhole. Nuclear Shields can provice Microcast and Microlinear collimators for low, medium or high energy imaging.
Nuclear Shields can offer different types of collimators such as, slanthole collimators, parallelhole collimators, fanbeam collimators, pinhole collimators and converging & diverging collimators.
Clinical collimator design:
We can help you develop a collimator for your gamma camera, gamma detector, solid state detector, PET camera, CT camera or X-ray machine to your specific requirements.
We have experience with the collimator in the construction of an MRI-compatible SPECT collimator for MRI / SPECT hybrid imaging devices.
Preclinical collimator design:
For animal studies with gamma-ray or x-ray equipment, please contact us for your custom collimator
resolution
- Better resolution is achieved by reducing the diameter of the hole or increasing the hole length.
Sensitivity:
- The sensitivity can be increased by larger holes and shorter bore length.
Resolution VS Sensitivity:
There is always a trade-off between sensitivity and resolution of the designed collimator.
- High resolution leads to lower sensitivity, lower sensitivity to higher resolution.
Septa Diameter:
- Reducing the septum diameter improves the sensitivity but increases the penetration of the septum.
Increasing the septum diameter reduces the sensitivity, but reduces the septum penetration.
Hole length:
Increasing the bore length improves the resolution of the collimator.
Thickness of the septa:
- The thickness of the septum must increase when working with higher energy imaging. Otherwise, septum penetration will occur, resulting in a star effect.
Septumpenetration:
- The degree of septum segregation (%) depends on the parameters of the collimator and the radioisotope used.