With only 20 to 40 total number of X-ray projections and 0.1 mAs per projection, the team images achieved clear enough for image-guided radiotherapy. The reconstruction time ranged from 77 to 130 seconds in a Tesla C1060 GPU card, depending on the number of projections – an estimated 100 times faster than similar iterative reconstruction approaches, says Jia. – The currently widespread scanning protocol of about 360 projections with 0.4 mAs per projection comparison CT scans. Method resulted in 36 to 72 times less radiation exposure for the patient. – 40 in most cases – With our technique, we can reconstruct cone beam CT images with only a few projections and lower mAs levels, he says. This significantly reduce the radiation dose. .
Reducing the total number of x-ray projections and mAs level per projection with a CT scan can be used to minimize patient exposure, but the change is too loud, mathematically incomplete data, hour takes the processing using the current iterative reconstruction approaches. Compared is mainly used for treatment setup while patients are in the treatment quickly quickly reconstruct a requirement, explains lead author Xun Jia, a UCSD postdoctoral fellow.Schepens Eye Research Institute is an affiliate of Harvard Medical School in and the largest independent eye research institutions in the world.