Measured acoustic intensities for clinical diagnostic ultrasound transducers and correlation with thermal index

K Retz, S Kotopoulis, T Kiserud, K Matre… - … in Obstetrics & …, 2017 - Wiley Online Library
Objectives To investigate if the thermal index for bone (TIB) displayed on screen is an
adequate predictor for the derated spatial‐peak temporal‐average (ISPTA. 3) and spatial …

Acoustic output as measured by mechanical and thermal indices during routine obstetric ultrasound examinations

E Sheiner, J Freeman… - Journal of ultrasound in …, 2005 - Wiley Online Library
Objective The purpose of this study was to quantify the acoustic output of clinical ultrasound
instruments, as expressed by the thermal index (TI) and mechanical index (MI), during …

Evaluation of the scan duration and mechanical and thermal indices applied for the diagnostic ultrasound examinations

J Fatahi Asl, Z Farzanegan, M Tahmasbi… - … of Ultrasound in …, 2021 - Wiley Online Library
Objective Although epidemiological studies have failed to show the harmful effects of
ultrasound in humans, as a form of energy, ultrasound has the potential to cause bio‐effects …

[引用][C] How to interpret the ultrasound output display standard for higher acoustic output diagnostic ultrasound devices: version 2

AIUM Clinical Standards … - Journal of Ultrasound in …, 2004 - Wiley Online Library
The higher output devices are allowed to produce a maximum output of 720 mW/cm2 for all
applications, as long as the Thermal Index (TI) or the Mechanical Index (MI) is displayed for …

Biophysical aspects of diagnostic ultrasound

SB Barnett - Ultrasound in medicine & biology, 2000 - Elsevier
The use of diagnostic ultrasound (US) in medicine is generally considered to be safe,
although there are some limitations in the epidemiology data. The development of new …

Trends in diagnostic ultrasound acoustic output from data reported to the US Food and Drug Administration for device indications that include fetal applications

SL Cibull, GR Harris, DM Nell - Journal of Ultrasound in …, 2013 - Wiley Online Library
Objectives A survey was conducted of acoustic output data received by the US Food and
Drug Administration for diagnostic ultrasound devices whose indications for use include fetal …

Hydrophone spatial averaging correction for acoustic exposure measurements from arrays—Part I: Theory and impact on diagnostic safety indexes

KA Wear - IEEE transactions on ultrasonics, ferroelectrics, and …, 2020 - ieeexplore.ieee.org
This article reports underestimation of mechanical index (MI) and nonscanned thermal index
for bone near focus (TIB) due to hydrophone spatial averaging effects that occur during …

First‐trimester sonography: Is the fetus exposed to high levels of acoustic energy?

E Sheiner, I Shoham‐Vardi, MJ Hussey… - Journal of Clinical …, 2007 - Wiley Online Library
Purpose. As a form of energy, diagnostic ultrasound has bioeffects on living tissues. The
thermal index (TI), TIS (TI for soft tissue), TIB (TI for bone), TIC (TI for cranial bone) expresses …

A symposium on obstetrical ultrasound: is all this safe for the fetus?

E Sheiner, JS Abramowicz - Clinical Obstetrics and Gynecology, 2012 - journals.lww.com
Diagnostic ultrasound is a form of energy that has the potential for effects in tissues
(bioeffects). The 2 most likely mechanisms are heating and cavitation. The thermal index (TI) …

[引用][C] The output display standard: has it missed its target?

K Maršál - Ultrasound in Obstetrics and Gynecology: The …, 2005 - Wiley Online Library
BACKGROUND Diagnostic ultrasound is the safest medical imaging modality for the
exposed patient and this has contributed to it being established as the method of choice for …