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Gray scale of ultrasound instruments: evaluation using a test object.

Authors
  • Kimme-Smith, C
  • Winter, J
  • Norman, A
  • King, W 3rd
  • Chu, R Y
  • Pincu, M
  • Rimkus, D
Type
Published Article
Journal
Radiology
Publication Date
Nov 01, 1983
Volume
149
Issue
2
Pages
545–548
Identifiers
PMID: 6622703
Source
Medline
License
Unknown

Abstract

B-mode scans of castor oil in a wedge-shaped container provide gray level maps. The relation between the gray levels and the amounts of absorbing medium can be used to measure the effects of electronic gain, transducer characteristics, and the overall gray level performance of different ultrasound systems. We report results from four units and ten transducers for varying scanning depths.

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