PD27-05 BENCHTOP BLADDER PHANTOM PRESSURE ESTIMATION USING ULTRASOUND CONTRAST AGENTS

You have accessJournal of UrologyUrodynamics/Lower Urinary Tract Dysfunction/Female Pelvic Medicine: Basic Research & Pathophysiology (PD27)1 Sep 2021PD27-05 BENCHTOP BLADDER PHANTOM PRESSURE ESTIMATION USING ULTRASOUND CONTRAST AGENTS Kourosh Kalayeh, J. Brian Fowlkes, Jake Claflin, Mario L. Fabiilli, William W. Schultz, and Bryan S. Sack KalayehKourosh Kalayeh More articles by this author , FowlkesJ. Fowlkes ClaflinJake Claflin FabiilliMario Fabiilli SchultzWilliam Schultz SackBryan View All Author Informationhttps://doi.org/10.1097/JU.0000000000002020.05AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Lack a catheter-free, physiological method for evaluating bladder pressure is considered be major challenge in urodynamic testing. We hypothesize that sensitive acoustic properties ultrasound contrast agents (UCAs)–a known as SubHarmonic Aided Pressure Estimation (SHAPE)–adequately estimates benchtop phantom pressures. METHODS: The designed simulates non-voiding contractions (NVCs) variable compliance. Laboratory made equivalent commercial UCA diluted 0.9 % normal saline (0.08 v/v) infused using equipment (30 ml/min). Simultaneous subharmonic signal scattered UCAs acquired with scanner (GE LOGIQ E10 C2-9 probe SHAPE mode) calibrated linear fit yield values. For the compliance model, measurements are obtained at 10 cmH2O increments while NVC model continuously. RESULTS: Examples tracings estimations two models shown. maximum absolute errors NVCs less than 8 (8 %) 16 (16 %), respectively. mean R−squared values both (n=4) R2=0.89±0.09. CONCLUSIONS: Subharmonic can strongly correlated This first step towards creating catheter-free voiding measurement SHAPE. Source Funding: Societies Pediatric Urology UofM Mcubed © 2021 American Urological Association Education Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e444-e445 Advertisement Copyright Permissions© Inc.MetricsAuthor Information Expand Loading ...