This study was conducted in the Department of Radiodiagnosis, Mahatma Gandhi Medical College and hospital, Jaipur on cases referred from departments of Urology, General Surgery, Endocrinology, Internal Medicine and Psychiatry for Penile Color Doppler Ultrasonography between January 2020 and January 2022. In this study, a total of 12 patients were examined. Maximum number of patients were in the 21-25 years age group (5 patients; 41.66%), followed by equal numbers in 26-30 years age group (2 patients; 16.66%) and 31-35 years age group (2 patients; 16.66%). The age groups of 16-20 years, 46-50 years and 61-65 years had one patient each. Erectile Dysfunction in younger age groups is generally due to performance anxiety, hesitancy or some other unrelated factor indicating that the penile erection mechanism and the penile doppler study are normal and that there is no organic cause. However, this study also indicated that the problem of arterial insufficiency is being found more commonly in the younger age groups than what was found in the past and this rising trend might be due to irregular and stressful lifestyle. Patients belonging to the middle and higher age groups who have complaints of erectile dysfunction are more likely to have an abnormal penile doppler study outcome indicating that Erectile Dysfunction in them is most likely to be due to some pathological cause. Key words: Erectile Dysfunction; Penile Colour Doppler Ultrasonography.