Forum

William R. Hendee

doi:10.1117/12.7972128

1 October 1977 Forum

William R. Hendee

Author Affiliations +

Optical Engineering, Vol. 16, Issue 5, 165523 (October 1977). https://doi.org/10.1117/12.7972128

Abstract

The use of ultrasound for diagnosis of patient pathology is one of the most rapidly advancing fields of medical imaging. Prior to 1972, ultrasound images were black and white displays with essentially no gray scale variation depicting the amplitude of echoes from interfaces within the body. In 1972, Kossoff introduced the methodology for gray scale display, and improvements over the last four years have yielded ultrasound images with excellent gray scale characteristics and good rendition of anatomic detail. With these improvements, the ability to resolve fine detail is now limited primarily by the frequency and geometrical characteristics of the ultrasound beam, motion of the patient during the scanning interval, and refraction of the ultrasound beam as it travels through the body. Within the constraints imposed by reduced penetration of ultrasound energy with increasing, frequency, limitations introduced by the ultrasound beam can be reduced with the use of higher frequency ultrasound and with careful selection of transducer diameter and focusing characteristics.

Citation Download Citation

William R. Hendee "Forum," Optical Engineering 16(5), 165523 (1 October 1977). https://doi.org/10.1117/12.7972128

Published: 1 October 1977

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available