Conference paper
Simulation and Efficient Measurements of Intensities for Complex Imaging Sequences
It is investigated how linear simulation can be used to predict both the magnitude of the intensities as well as the placement of the peak values. An ultrasound sequence is defined through the normal setup routines for the experimental SARUS scanner, and Field II is then used automatically on the sequence to simulate both intensity and mechanical index (MI) according to FDA rules.
A 3 MHz BK Medical 8820e convex array transducer is used with the SARUS scanner. An Onda HFL-0400 hydrophone and the Onda AIMS III system measures the pressure field for three imaging schemes: a fixed focus, single emission scheme, a duplex vector flow scheme, and finally a vector flow imaging scheme.
The hydrophone is connected to a receive channel in SARUS, which automatically measures the emitted pressure for the complete imaging sequence. MI can be predicted with an accuracy of 16.4 to 38 %. The accuracy for the intensity is from -17.6 to 9.7 %, although the measured fields are highly non-linear (several MPa) and linear simulation is used.
Linear simulation can, thus, be used to accurately predict intensity levels for any advanced imaging sequence and is an efficient tool in predicting the energy distribution.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2014 |
| Pages: | 1164-1167 |
| Proceedings: | 2014 IEEE International Ultrasonics Symposium |
| ISBN: | 1479970484 , 1479970492 , 1479970506 , 9781479970483 , 9781479970490 and 9781479970506 |
| Types: | Conference paper |
| DOI: | 10.1109/ULTSYM.2014.0286 |
| ORCIDs: | Jensen, Jørgen Arendt , Stuart, Matthias Bo and Tomov, Borislav Gueorguiev |
Accuracy BK Medical 8820e convex array transducer FDA rules Field II Imaging Onda AIMS III system Onda HFL-0400 hydrophone Pressure measurement Probes Time measurement Transducers Ultrasonic variables measurement advanced imaging sequence biomedical ultrasonics complex imaging sequences duplex vector flow scheme efficient measurements energy distribution experimental SARUS scanner fixed focus hydrophones image sequences imaging schemes intensities intensity linear simulation mechanical index medical image processing normal setup routines peak values pressure field receive channel single emission scheme ultrasonic transducers ultrasound sequence vector flow imaging scheme
