Murugan N, Kandasamy D, Sharma R, et al. - In this ethically approved observational diagnostic study, researchers sought to assess and compare the accuracy of 4DCT and 4DMRI in the localization of parathyroid lesions. One hundred thirty-five patients (age range: 10-75 years, male: female ratio - 1:2.1) with clinically and biochemically suspected primary hyperparathyroidism were selected. In total, 50 patients with 61 proven parathyroid lesions were involved for analysis. Data reported that the sensitivity of both 4DCT and 4DMRI was 96.7%; specificity was 66.6% and accuracy was 95.2%. For the detection of parathyroid lesions, 4DMRI and 4DCT had similar accuracy. However, 4DMRI has the advantage of a lack of ionizing radiation exposure that may be beneficial in younger patients.