Shades of Gray: A History of the Development of Diagnostic Ultrasound in a Large Multispecialty Clinic

Bistable sagittal scan demonstrating a popliteal artery aneurysm. Note the white image background (different from our present black backgrounds), which was the initial accepted image format.

Articulated arm bistable sagittal scan (A) indicating a pseudokidney sign consistent with carcinoma of the stomach confirmed on upper gastrointestinal series (B) and surgically confirmed as adenocarcinoma.

Transverse image (A) of the right lower quadrant demonstrating a pseudokidney sign corresponding to bowel wall thickening in the region of the terminal ileum. The follow-up small bowel series demonstrated findings consistent with regional enteritis (B).

Pancreatic transplant visualized with color-flow Doppler imaging, demonstrating the patent splenic artery and vein.