High power and therapeutic ultrasound

Miniature HIFU circular array transducer

Note : all presented transducers are custom products designed according to the needs of a particular application. They are not catalogue products available on request

Features

• Maximum intensity at surface: up to 20 W/cm²
• Efficiency : 50%
• 64 elements on 360°
• Cross coupling : -40 dB
• Active diameter : 10 mm
• Frequency : 5 MHz
• Integrated cooling
• MRI compatible. More >>

Courtesy INSERM - Unit 556

Application

Treatment of oesophageal tumors

Focus on directivity of the elements

The figure below illustrate the good correlation between theoretical and experimental results for elementary directivity.

Papers

"The feasibility of developing a 64 elements cylindrical array for intraductal thermal surgery", D. Melodelima, C. Lafon, A. Birer1, Y. Theillère and D. Cathignol - Inserm - Unit 556, F. Prat - Dept of hepatogastroenterology, Bicêtre Hospital, 2002 IEEE ultrasonic symposuim