Mayo Clinic reveals lower radiation on tomography

• April 25, 2024

Scientists of the Mayo Clinic They conducted several investigations to reduce the radiation dose used in the acquisition of images by computerized tomography (CT) that are used in the diagnosis for patients in whom a cerebrovascular accident .

In this regard, medical physics Cynthia McCollough of the Mayo Clinic, states: "We believe in the clinical value of CT and, although it has not been documented the risk of injury with current radiation levels, we know that with this type of tomography reduces the risk of patients "

McCollough's team experimented with a newly created algorithm for image processing that produces CT scans high quality with a quantity of radiation up to 20 times lower than the existing protocols.

Depending on the diagnostic application, the examination of Perfusion CT It takes 30 seconds to scan the tissue several times, after an injection of iodine. This technique detects changes in the volume and flow of blood, revealing injuries in blood vessels or the response of tumor to the treatment.

Then, digitally, explains McCollough, a cross-reference is made of the information obtained through each of the explorations, to improve the quality of the image and reduce distortions, with the aim of exposing patients to risks that are less risky. undergo this type of radiation.

Video Medicine: Radiation Dose with CT Scan-Mayo Clinic (April 2024).