By AuntMinnie.com staff writers
April 9, 2021 — A low-dose protocol of intravenous contrast-enhanced 2-mSv CT is comparable to conventional-dose CT for diagnosing right colonic diverticulitis, according to a study published April 8 in the American Journal of Roentgenology.
The results could help clinicians better distinguish right colonic diverticulitis from appendicitis, according to a team led by Dr. Hae Young Kim, PhD, of Seoul National University Bundang Hospital in South Korea.
“By mitigating concern of missed diagnosis of right colonic diverticulitis, our results further support the use of low-dose CT for suspected appendicitis,” the group wrote.
Kim and colleagues performed a study that included 3,074 patients between the ages of 15 and 44 seen at 20 hospitals. The patients were randomized into two groups, one that underwent contrast-enhanced 2-mSv CT (1,535) and another that underwent conventional CT (1,539) between December 2013 and August 2016. A team of 161 radiologists read the exams, recommending alternative diagnoses in 976 of the low-dose CT exams and in 924 of the conventional CT exams.
The researchers found that true positives, true negatives, sensitivity, and specificity results between the two groups were not statistically significant, demonstrating the efficacy of low-dose CT for this indication, they concluded.