Diagnostic performance of 320 cardiac MDCT angiography in assessment of PDA either isolated or associated with duct dependent congenital heart disease

Egyptian Journal of Radiology and Nuclear Medicine

Table 9 Descriptive analysis of the studied cases according to DLP and effective dose reduction in each age group

Age (months)	No	DLP	Effective dose reduction
Age (months)	No	Mean ± SD	Mean ± SD
< 4 months	18	77.83 ± 21.89	3.02 ± 0.85
≥ 4 to < 12 months	8	65.99 ± 11.76	1.80 ± 0.27
≥ 12 months to < 6 years	2	87.90 ± 20.87	1.58 ± 0.38
≥ 6 years	2	238.9 ± 282.3	3.33 ± 3.92
Total	30	91.79 ± 88.45	2.61 ± 1.38