The American College of Radiology (ACR) announced that it has launched a CT dose index registry that allows imaging facilities to track and compare radiation dose from imaging exams.
Medical imaging facilities can now submit anonymous dose information for all CT exams performed to the Dose Index Registry (DIR), which will allow them to compare their dose indices to other facilities of similar size or geographic area and to national benchmarks. Participating facilities will also receive periodic feedback comparing their dose levels to these benchmarks, giving them information they can use to lower radiation dose received from scans.
The DIR is a new component of the ACR National Radiology Data Registry (NRDR). To participate in the new registry, a facility enrolls through the NRDR portal; software is installed at the facility to receive dose information from a CT scanner or PACS for every CT exam performed, then data are anonymized and transmitted to the registry. Periodic reports are provided to the facility through the NRDR portal, the ACR said.


















![Images show the pectoralis muscles of a healthy male individual who never smoked (age, 66 years; height, 178 cm; body mass index [BMI, calculated as weight in kilograms divided by height in meters squared], 28.4; number of cigarette pack-years, 0; forced expiratory volume in 1 second [FEV1], 97.6% predicted; FEV1: forced vital capacity [FVC] ratio, 0.71; pectoralis muscle area [PMA], 59.4 cm2; pectoralis muscle volume [PMV], 764 cm3) and a male individual with a smoking history and chronic obstructive pulmonary disorder (COPD) (age, 66 years; height, 178 cm; BMI, 27.5; number of cigarette pack-years, 43.2, FEV1, 48% predicted; FEV1:FVC, 0.56; PMA, 35 cm2; PMV, 480.8 cm3) from the Canadian Cohort Obstructive Lung Disease (i.e., CanCOLD) study. The CT image is shown in the axial plane. The PMV is automatically extracted using the developed deep learning model and overlayed onto the lungs for visual clarity.](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/03/genkin.25LqljVF0y.jpg?auto=format%2Ccompress&crop=focalpoint&fit=crop&h=112&q=70&w=112)