7.5 MHz pediatric phased array transesophageal endoscope

J. E. Piel, R. S. Lewandowski, P. W. Lorraine, L. S. Smith, T. Shiota, D. J. Sahn

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


This work extends the clinical benefits of phased array transesophageal echocardiography (TEE) with high detail and contrast resolution to include neonatal patients. We have built several prototype 64 element, 7.5 MHz phased array transducers housed in 6.2 mm endoscope shafts for use with commercially available imaging systems. The acoustic design is standard, but the miniaturized packaging of the electrical connections was quite challenging. The endoscopes demonstrate very good structural resolution and excellent sensitivity for color flow imaging and CW Doppler. They have been used on patients as small as 1.9 kg, frequently as an anatomical guide during catheter based interventions and during congenital heart surgery. Array test data and representative clinical studies are shown.

Original languageEnglish (US)
Pages (from-to)1527-1530
Number of pages4
JournalProceedings of the IEEE Ultrasonics Symposium
StatePublished - 1994
Externally publishedYes
EventProceedings of the 1994 IEEE Ultrasonics Symposium. Part 1 (of 3) - Cannes, Fr
Duration: Nov 1 1994Nov 4 1994

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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