TY - JOUR
T1 - Safety Assessment of Advanced Imaging Sequences I: Measurements
AU - Jensen, Jørgen Arendt
AU - Rasmussen, Morten Fischer
AU - Pihl, Michael Johannes
AU - Holbek, Simon
AU - Villagómez Hoyos, Carlos Armando
AU - Bradway, David
AU - Stuart, Matthias Bo
AU - Tomov, Borislav Gueorguiev
N1 - (c) 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
PY - 2016
Y1 - 2016
N2 - A method for rapid measurement of intensities
(Ispta), mechanical index (MI), and probe surface temperature
for any ultrasound scanning sequence is presented. It uses
the scanner’s sampling capability to give an accurate measurement
of the whole imaging sequence for all emissions to
yield the true distributions. The method is several orders of
magnitude faster than approaches using an oscilloscope, and
it also facilitates validating the emitted pressure field and the
scanner’s emission sequence software. It has been implemented
using the experimental SARUS scanner and the Onda AIMS III
intensity measurement system (Onda Corporation, Sunnyvale,
CA, USA). Four different sequences have been measured: a fixed
focus emission, a duplex sequence containing B-mode and flow
emissions, a vector flow sequence with B-mode and flow emissions
in 17 directions, and finally a synthetic aperture (SA) duplex flow
sequence. A BK8820e (BK Medical, Herlev, Denmark) convex
array probe is used for the first three sequences and a BK8670
linear array probe for the SA sequence. The method is shown
to give the same intensity values within 0.24% of the AIMS III
Soniq 5.0 (Onda Corporation, Sunnyvale, CA, USA) commercial
intensity measurement program. The approach can measure and
store data for a full imaging sequence in 3.8 to 8.2 s per spatial
position. Based on Ispta, MI, and probe surface temperature,
the method gives the ability to determine whether a sequence is
within US FDA limits, or alternatively indicate how to scale it to
be within limits.
AB - A method for rapid measurement of intensities
(Ispta), mechanical index (MI), and probe surface temperature
for any ultrasound scanning sequence is presented. It uses
the scanner’s sampling capability to give an accurate measurement
of the whole imaging sequence for all emissions to
yield the true distributions. The method is several orders of
magnitude faster than approaches using an oscilloscope, and
it also facilitates validating the emitted pressure field and the
scanner’s emission sequence software. It has been implemented
using the experimental SARUS scanner and the Onda AIMS III
intensity measurement system (Onda Corporation, Sunnyvale,
CA, USA). Four different sequences have been measured: a fixed
focus emission, a duplex sequence containing B-mode and flow
emissions, a vector flow sequence with B-mode and flow emissions
in 17 directions, and finally a synthetic aperture (SA) duplex flow
sequence. A BK8820e (BK Medical, Herlev, Denmark) convex
array probe is used for the first three sequences and a BK8670
linear array probe for the SA sequence. The method is shown
to give the same intensity values within 0.24% of the AIMS III
Soniq 5.0 (Onda Corporation, Sunnyvale, CA, USA) commercial
intensity measurement program. The approach can measure and
store data for a full imaging sequence in 3.8 to 8.2 s per spatial
position. Based on Ispta, MI, and probe surface temperature,
the method gives the ability to determine whether a sequence is
within US FDA limits, or alternatively indicate how to scale it to
be within limits.
U2 - 10.1109/TUFFC.2015.2502987
DO - 10.1109/TUFFC.2015.2502987
M3 - Journal article
C2 - 26625411
SN - 0885-3010
VL - 63
SP - 110
EP - 119
JO - I E E E Transactions on Ultrasonics, Ferroelectrics and Frequency Control
JF - I E E E Transactions on Ultrasonics, Ferroelectrics and Frequency Control
IS - 1
ER -