Keywords:
Dosimetric comparison, Radiation safety, Equipment, Comparative studies, Digital radiography, Paediatric
Authors:
L. Bowden, A. Moran, C. Saidlear, A. Mooney, Y. Sheikh, E. L. Twomey, S. Ryan; Dublin/IE
DOI:
10.26044/ecr2019/C-2816
Methods and materials
A consecutive sample of DR images of babies,
4 to 12 months old,
who underwent hip X-rays for evaluation of DDH,
was identified over a period of six months,
were compared to a similar sample of CR images.
The Dose-Area Product (DAP) was recorded using the integrated DAP meters.
However,
for a minority of images,
estimation of the radiation dose to these babies was retrospectively calculated using the recorded exposure factors
To assess image quality,
a sample of both CR and DR images were reviewed independently by two consultant paediatric radiologists.
The identity of the system used to acquire the images were withheld from the Radiologists.
Criteria were chosen that were considered relevant to the diagnostic asessement of the hips in DDH e.g identification of points used to measure the acetabular angle.
Table 1 lists the criteria used to examine each image.
Answers were recorded in the format of (Y/N),
(Y/N),
(Y/N),
(Y/N),
(Y/N),
(S/D/N),
e.g.
Y,Y,Y,Y,Y,S.
Figure 1 shows a sample of an image reviewed and highlights the areas of interest.