A comparison of the abilities of ultrasound and scintigraphy to detect
gastro-oesophageal reflux was made in 110 children (mean age 24.5 mon
ths) who were divided into groups A (n = 49) and B (n = 61). The forme
r had scintigraphy first followed by ultrasound within about 30 min. F
or group B scintigraphy was also performed first, but the delay before
ultrasound ranged between 1 and 30 days. In most patients (91/110) co
ncordant results were obtained by the two modalities. The 19/110 disco
rdant results can be explained by several plausible mechanisms. It is
concluded that ultrasound should be employed much more frequently as a
n initial investigation when pathological reflux is suspected in child
ren.