Constant soft tissue distance model in pregnancy.
Carson
P L
PL
Division of Radiological Physics, University of Michigan Hospitals, Ann Arbor 48109-0553.
Rubin
J M
JM
Chiang
E H
EH
D000649:Amniocentesis; D001835:Body Weight; D005260:Female; D006801:Humans; D008954:Models, Biological; D011247:Pregnancy; D011296:Prenatal Diagnosis; D014159:Transducers; D014463:Ultrasonography