An obstetric test for resolution by ultrasonic echoscopes.
Very small fetal intervertebral and intercostal distances can be measured in B-mode echograms. Such measurements provide a physiological test object which is freely available and devoid of artefact for assessing resolution by ultrasonic echoscopes. Intercostal distances of 2mm have been measured.
D005260:Female; D005333:Fetus / Q000033:anatomy & histology*; D006801:Humans; D008159:Lumbar Vertebrae / Q000033:anatomy & histology; D011247:Pregnancy; D012272:Ribs / Q000033:anatomy & histology; D014465:Ultrasonics / Q000295:instrumentation / Q000379:methods