In medical imaging, radiation dose reduction has moved to the forefront of importance with new techniques being developed in an effort to bring doses down as low as possible.
What difference can these techniques make? Researchers at Indiana University School of Medicine aimed to find out.
"We conducted a study to quantify dose reduction, comparing two years' worth of data and 11,458 abdomen and pelvic CT exams," said Dr. Jonas Rydberg, lead author of the study. Data on 5,707 consecutive CT abdomen and pelvis exams without iterative reconstruction or longitudinal dose modulation was collected.
Iterative reconstruction is a mathematical process that is an integral part of the CT scanner that allows for good quality images with lower radiation doses, said Dr. Rydberg. Longitudinal dose modulation changes the radiation dose based on the density of the part of the body being imaged, he said.
Dr. Rydberg will present his study at the ARRS annual meeting on April 17 in Washington, DC.