Research shows 3D image quality decreases only slightly with reduction in radiation dose
In light of increasing CT colonography use, recent study results show the high quality of 3D CT colonography diagnostic images can be maintained while decreasing the radiation dose.
“Radiation dose is a concern for many in health care – from the clinicians and patients to the government agencies that regulate the industry,” said lead researcher Kevin J. Chang, MD, of Rhode Island Hospital’s department of diagnostic imaging. “The theoretical risks of radiation exposure as a cancer causing agent must be weighed realistically against the substantial benefits of colon cancer screening.”
Chang studied CT colonography results in 63 patients to determine the effect of reducing the radiography voltage on 3D image quality. Study results revealed, among patients of all sizes, a statistically significant reduction in radiation dose with only a slight decrease in 3D image quality.
Chang said, “By lowering the radiation dose, we can lower patients’ concerns and their exposure, while maintaining the diagnostic quality of the exam and providing early detection and treatment.”
The research is published in the current issue of the journal Radiology.
Source: Rhode Island Hospital.