Image-based cardiac phase retrieval in intravascular ultrasound sequences

Aura Hernàndez-Sabaté, Debora Gil, Jaume Garcia-Barnés, Enric Martí

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

Longitudinal motion during in vivo pullbacks acquisition of intravascular ultrasound (IVUS) sequences is a major artifact for 3-D exploring of coronary arteries. Most current techniques are based on the electrocardiogram (ECG) signal to obtain a gated pullback without longitudinal motion by using specific hardware or the ECG signal itself. We present an image-based approach for cardiac phase retrieval from coronary IVUS sequences without an ECG signal. A signal reflecting cardiac motion is computed by exploring the image intensity local mean evolution. The signal is filtered by a band-pass filter centered at the main cardiac frequency. Phase is retrieved by computing signal extrema. The average frame processing time using our setup is 36 ms. Comparison to manually sampled sequences encourages a deeper study comparing them to ECG signals. © 2011 IEEE.
Original languageEnglish
Article number5688401
Pages (from-to)60-72
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume58
Issue number1
DOIs
Publication statusPublished - 1 Jan 2011

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