The gray scale appearance of the normal pregnancy from 4 to 16 weeks of gestation.

Since the advent of gray scale, more detail is available on sonograms and the products of conception are more readily seen. The gestational sac can be seen at about the fifth week of gestation and the fetal parts can be recognized around the seventh week of gestation. The gestational sac, fetal parts, and the placenta can be followed all the way through pregnancy without any "blind periods.

Gray scale sonographic anatomy of the pancreas.

With the development of gray scale, the appearance of pancreatic anatomy and its relationship to surrounding structures can be demonstrated more effectively. Gray scale has made it possible to identify such vessels as the portal vein, superior mesenteric vein, superior mesenteric artery, splenic vein, etc. This makes it possible to identify the pancreas more precisely.

Recognition of the hydropic fetus by gray scale ultrasound.

The use of gray scale B mode provides more effective visualization for sonographic evaluation of fetal ascities. Two cases of severely Rh isoimmunized fetuses with hydrops and one fetus with hydrops secondary to chylous ascites are presented to show the ultrasonic features of diagnosis of fetal edema and ascities. Thus, ultrasonic evaluation in known cases of Rh isoimmunization or diabetes provides additional information on the status of the fetus in utero and rapid recognition of fetal hydrops.

Gray scale sonographic appearance of an adrenal mass: a case report.

This is a case report of a 57 year old white male who had had a right upper lobectomy for adenocarcinoma of the lung six months previously. During clinical workup, he was found to have a right adrenal mass. The intravenous pyelogram demonstrated a large mass in the adrenal region which pushed the kidney down and laterally but did not distort the calyces.