Optimum design of echogenic needles for ultrasound guided nerve block

Yun Jing, Robert Bocala, Assad Oberai, Paul Bigeleisen

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


The goal of this study is to optimize a cylindrical needle with a grooved surface for maximum backscattering to the transceiver during medical ultrasound procedures. Evaluation of backscattering performance of multiple prototype geometries with 2D time-harmonic acoustic finite element analysis was performed. Groove patterns with repeat periods determined with the guidance of the grating equation to produce constructive interference showed very strong and sharp backscattering peaks, but only at specific isonification angles. Optimum depths for the groove patterns with groove periods defined by the grating equation were found. A search on possible geometries was performed, varying the design variables of groove period and groove depth, with an objective function designed to select geometries that performed well at multiple isonification angles.

Original languageEnglish (US)
Article number4803217
Pages (from-to)1334-1337
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
StatePublished - 2008
Event2008 IEEE International Ultrasonics Symposium, IUS 2008 - Beijing, China
Duration: Nov 2 2008Nov 5 2008

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics


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