Title :
Use of contrast agents in ultrasound
Author :
Shahnazi, Kambiz ; Fox, Martin D.
Author_Institution :
Dept. of Electr. & Syst. Eng., Connecticut Univ., Storrs, CT, USA
Abstract :
By using Albunex, a recently developed ultrasound contrast agent, a clear Doppler ultrasound signal, and a B-mode image of the flow stream has been obtained. For the Doppler signal, a Hokanson Doppler unit with 5 MHz transducer was used, and for the image of the flow stream, a GE imager with 7.5 Mhz transducer was used. In this experiment, a straight 1:1000 dilution for Albunex (Molecular Biosystems Inc., San Diego, CA) was prepared. For the flow stream, a 1 mm groove in a plexiglass phantom was prepared. The Doppler signal, and the image obtained show a clear distinction between contrast agents and water. Therefore, by using an ultrasound contrast agent, flow and flow direction can be visualized using a conventional B-mode imager
Keywords :
Doppler effect; biomedical ultrasonics; 1 mm; 5 MHz; 7.5 MHz; B-mode image; Hokanson Doppler unit; clear Doppler ultrasound signal; flow direction visualization; flow stream; medical diagnostic imaging; plexiglass phantom; ultrasound contrast agents; Blood; Imaging phantoms; Laboratories; Myocardium; Resonance; Resonant frequency; Streaming media; Ultrasonic imaging; Ultrasonic transducers; Visualization;
Conference_Titel :
Bioengineering Conference, 1994., Proceedings of the 1994 20th Annual Northeast
Conference_Location :
Springfield, MA
Print_ISBN :
0-7803-1930-3
DOI :
10.1109/NEBC.1994.305167
