Table 2

Salomon score adapted to the third trimester fetal ultrasound

Biometric criteriaMorphological pictures
Head circumferenceAbdominal circumferenceFemoral lengthCranial box and its contents4-chamberRight outflow tractLeft outflow tractKidneysSpine
Symmetrical planningSymmetrical planningClear visualisation of both ends of the femurPlane showing the thalami4 chambers visiblePulmonary artery bifurcation visibleAortic valve visibleCircular view of the first kidneyDorsal spine visible
Plane showing the thalamiPlane showing the stomach bubbleAngle less than 45° from the horizontalPlane showing the cavum of the septum pellucidumApex of the heart visibleAscending aorta visibleAscending aorta visibleCircular view of the second kidneySacrum visible
Plane showing the cavum of the septum pellucidumPlane showing the sinus doorCerebellum not visibleHeart crux visibleRight ventricle visibleLeft ventricle visiblePosterior kidney clear from the spine acoustic shadowAlignment of the vertebrae visible from the dorsal level to the sacrum
Cerebellum not visibleKidney not visibleLateral ventricle visibleOne pulmonary vein visiblePulmonary artery curlicue up the aortaPulmonary artery curlicue up the aortaCorticomedullary differentiation or renal pelvic cavity visibleContinuity of the skin line
Callipers and ellipse points correctly placedCallipers and ellipse points correctly placedCallipers and ellipse points correctly placedSylvian fissure visibleDescending thoracic aorta visibleAmniotic fluid visible beyond the skin
Head occupying more than half of the total image sizeAbdomen occupying more than half of the total image sizeFemoral plane occupying more than half of the total image sizeHead occupying more than half of the total image sizeRegion of interest occupying more than half of the total image sizeRegion of interest occupying more than half of the total image sizeRegion of interest occupying more than half of the total image sizeRegion of interest occupying more than half of the total image sizeRegion of interest occupying more than half of the total image size