Abstract：
:The main component of every device used for investigating internal object structure by Ultrasound Transmission Tomography (UTT) is a special ultrasonic probe. This paper presents the structure of model multielement ring probe for examining objects using this method in divergent ray projection geometry. The probe is made up of 1024 rectangular separate piezoelectric transducers working at frequency f=1.7 MHz, placed inside a ring with diameter D=30 cm and height h=9 cm. Each element of the probe is equipped with a quarter-wave matching layer. All the transducers function as transmitters and receivers, and can be joined in groups both during transmitting and during receiving. Some examples of admittance characteristics of a single piezoelectric transducer and examples of shapes of pulses generated and received by particular transducers were presented. Important factors affecting the measurement resolution are the sizes of the active surface of the transducers.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Gudra T,Opielinski KJdoi
10.1016/j.ultras.2006.05.126subject
Has Abstractpub_date
2006-12-22 00:00:00pages
e679-83eissn
0041-624Xissn
1874-9968pii
S0041-624X(06)00163-6journal_volume
44 Suppl 1pub_type
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