Improved Images in Cone Beam Computed Tomography (CBCT)


Cone beam computed tomography (CBCT) is a compact 3D imaging technology utilized in imaging within dentistry, orthopedics, and interventional radiology, among others.  While CBCT provides cost efficient volumetric imaging capability, it provides relatively poor image quality due to a large volume of x-ray illumination and scattered radiation. To reduce the scatter intensity and lower radiation dose to the patient, Dr. Cem Altunbas introduces a novel design of a two-dimensional antiscatter grid, 2D ASG that can reduce scatter intensity by a factor of 3 to 6 times and transmits 20% more primary (or useful) xrays to the image receptor. CBCT image quality is drastically improved due to superior scatter rejection and primary x-ray transmission capability.  Additionally, 2d ASD provides improved low contrast object visualization and CT number accuracy, may be retrofitted with existing flat panel detector based CBCT systems, and may be customized for different imaging tasks.


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Medical Devices
For Information, Contact:
Doreen Molk
University of Colorado
Cem Altunbas
Disease Areas:
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