Ultrasound grey scale display on storage oscilloscope system.

A grey-scale display system for ultrasound contact B-scanning has been developed that produces six shades of grey on a high resolution storage oscilloscope. The grey shades are displayed by varying the density distribution of dots of a constant intensity. The system design and clinical results are presented. Advantages of our system are: 1. the non-degraded image is immediately displayed as the scan is performed. 2. the writing speed is faster than most scan converter tube systems son that many closely spaced scans can be rapidly performed in order to improve visualization of small anatomic structures, and 3. images comparable to those of scan converter display systems are produced at a significantly lower equipment cost.