PMID: 9437562Jan 23, 1998Paper

Ultrasound characteristics of subdermally implanted Implanon contraceptive rods

Contraception
A LantzR L Siegel

Abstract

This study was designed to define sonographic characteristics and the optimal sonographic technique for localization of the single rod Implanon system. Diagnostic ultrasonography was performed in eight women who had the Implanon rod implanted in the medial aspect of the upper arm. All implants were scanned in the longitudinal and transverse direction using 3.5 MHz, 5 MHz, and 7.5 MHz linear array transducers. Scanning was performed both directly against the skin and with 2 and 4 cm Kiteco ultrasound stand-off pads. Each image obtained was evaluated for detectability of the Implanon rod and the grade of acoustic shadowing produced by the Implanon rod by two independent observers. Discrepancies in evaluation were adjudicated by a third observer. The Implanon rod implant was not directly identified using the transducer and standoff pad combinations. Implanon rods were indirectly identified as a result of the posterior acoustic shadow cast by the Implanon. Best demonstration was achieved with the 5 or 7.5 MHz transducer and a 2 cm stand-off pad in the transverse direction. Appropriate ultrasonographic technique and familiarity with posterior acoustic shadowing patterns generated by the implant provide a noninvasive method for local...Continue Reading

Citations

May 21, 2008·European Radiology·T PersaudW C Torreggiani
Mar 30, 1999·Contraception·L Mascarenhas
Nov 6, 2007·Clinical Obstetrics and Gynecology·Heather Hohmann, Mitchell D Creinin
Mar 12, 2005·The Australian & New Zealand Journal of Obstetrics & Gynaecology·Sofie G PiessensAmanda J Sampson
May 18, 2006·The Australian & New Zealand Journal of Obstetrics & Gynaecology·Phillip James, John Trenery
Mar 15, 2006·Contraception·Lee P Shulman, Helena Gabriel
Jun 26, 2007·Contraception·Eric VidinKarima Bettahar-Lebugle
Jan 19, 2008·The Journal of Family Planning and Reproductive Health Care·Diana MansourJosef Herbst
Jun 1, 2005·The Journal of Family Planning and Reproductive Health Care·Manju Navani, Christine Robinson
Jul 22, 2006·The Journal of Family Planning and Reproductive Health Care·Ian S Fraser
Jul 22, 2006·The Journal of Family Planning and Reproductive Health Care·Madan SinghDavid Richardson
Sep 11, 2019·Obstetrics and Gynecology·Melissa C MatulichMitchell D Creinin
Aug 7, 2003·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·Pauline AmannStefano Bianchi

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