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Interpretation and reporting
Some obstetric abnormalities and gynaecology
Appendix A The physics of scanning
Appendix B Future developments
A-scan echoes abdomen abnormality amniocentesis amniotic fluid anencephaly aneurysm aorta aortic Aortic aneurysm artefact ascites attenuation axial resolution axis B-scan display bistable Brit calyces cervix compound scanning crown-rump length crystal cystic cysts Plate depth Diagram showing diameter ectopic pregnancy electron equipment exit echo fetal body fetal head fetus fibroid focussed frequency gain settings gallbladder gantry gestational sac give grey scale Gynaec high gain hydatidiform mole hydramnios hydronephrosis insonated interfaces internal echoes irregular kidney Kossoff lesion liver longitudinal scans longitudinal sections machine measurement midline movement normal Obstet oligohydramnios operator oscilloscope outline patient pelvis placenta praevia position possible posterior placenta probe pulse range record reflected region renal right angles scan converter scanning section screen seen Sketched skin sonographer spine structures swept gain techniques tissue transverse scans transverse sections tumour ultra ultrasonic beam ultrasonic diagnosis ultrasound usually uterus velocity visualisation waterbath weeks