Table 1

Salomon score adapted to the CNEOF recommendations for the second trimester fetal ultrasound

Biometric criteriaMorphological pictures
Head circumferenceAbdominal circumferenceFemoral lengthCranial box and its contentsPosterior cranial fossaFace4-chamberRight outflow tractLeft outflow tractStomach/ diaphragmKidneysSpinePlacental insertion
Symmetrical planningSymmetrical planningClear visualisation of both ends of the femurPlane showing the thalamiSymmetrical cerebellar hemispheresUpper lib visible4 chambers visiblePulmonary artery bifurcation visibleAortic valve visibleHeart visibleCircular view of the first kidneyDorsal spine visibleMaternal bladder visible
Plane showing the thalamiPlane showing the stomach bubbleAngle less than 45° from the horizontalPlane showing the cavum of the septum pellucidumVisible cerebellar vermisTwo nostrils visibleApex of the heart visibleAscending aorta visibleAscending aorta visibleStomach visibleCircular view of the second kidneySacrum visibleInternal os of the uterine cervix visible
Plane showing the cavum of the septum pellucidumPlane showing the sinus doorCerebellum not visibleCisterna magna visibleTwo lip angles visibleHeart crux visibleRight ventricle visibleLeft ventricle visibleSpine non-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 aortaDiaphragmatic interface visible from back to frontCorticomedullary differentiation or pyelic 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 visibleThigh and neck 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 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
  • CNEOF, French National Conference of Obstetric and Fetal Ultrasound.