Mechanism of synchronized change in ultrasonic integrated backscatter across human heart wall

Yumi Tobinai, Hirofumi Taki, Hiroshi Kanai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Ultrasonic integrated backscatter (IB) from the heart wall, which has been employed for quantitative tissue characterization of the myocardium, is known to have cyclic variation-a decrease in systole and an increase in diastole. In the present study, by tracking the measurement position of the myocardium and compensating for the movement due to the heartbeat, IB and its temporal variation were obtained from the same site with a high temporal resolution of 1.73 ms. In an in vivo study on a healthy subject, the temporal variation of IB values homogeneously changed across the heart wall, especially during the slow filling and the atrial systole phases. This new finding shows that the IB value reflects a small movement of the myocardium of about 5mm/s. Thus, the proposed measurement has a potential for quantitative and accurate evaluation of the contraction and relaxation of the myocardium.

Original languageEnglish
Article number07JF04
JournalJapanese journal of applied physics
Volume56
Issue number7
DOIs
Publication statusPublished - 2017 Jul

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Mechanism of synchronized change in ultrasonic integrated backscatter across human heart wall'. Together they form a unique fingerprint.

Cite this