TY - JOUR
T1 - Post-beamforming Volterra filters for contrast-assisted ultrasonic imaging
T2 - 2003 IEEE Ultrasonics Symposium - Proceedings
AU - Phukpattaranont, Pornchai
AU - Al-Mistarihi, Mamoun F.
AU - Ebbini, Emad S
PY - 2003
Y1 - 2003
N2 - We present the first verification of the contrast enhancement achieved by the post-beamforming second-order Volterra filter in vivo. Images of the kidney of a juvenile pig were obtained before and after infusion of contrast agent (SonoVue, Bracco, Geneva, Switzerland) at various concentrations. For example, at a concentration of 0.01 mL/kg, B-mode images (3 cycles at 1.56 MHz transmit frequency) show no quantificable change due to the presence of the contrast agent. Pulse inversion (PI) images without second harmonic (SH) filtering showed 10 dB enhancement and evidence of residual tissue components due to motion. SH imaging on PI data produced 14 dB enhancement with some loss in resolution. On the other hand, quadratic filtering produced 23 dB enhancement at twice the frame rate. This performance was achieved with quadratic filters derived using a new algorithm leading to a computationally efficient separable implementation of the quadratic kernel. This implementation should allow for real-time implementation of quadratic filtering on commercial ultrasound scanners.
AB - We present the first verification of the contrast enhancement achieved by the post-beamforming second-order Volterra filter in vivo. Images of the kidney of a juvenile pig were obtained before and after infusion of contrast agent (SonoVue, Bracco, Geneva, Switzerland) at various concentrations. For example, at a concentration of 0.01 mL/kg, B-mode images (3 cycles at 1.56 MHz transmit frequency) show no quantificable change due to the presence of the contrast agent. Pulse inversion (PI) images without second harmonic (SH) filtering showed 10 dB enhancement and evidence of residual tissue components due to motion. SH imaging on PI data produced 14 dB enhancement with some loss in resolution. On the other hand, quadratic filtering produced 23 dB enhancement at twice the frame rate. This performance was achieved with quadratic filters derived using a new algorithm leading to a computationally efficient separable implementation of the quadratic kernel. This implementation should allow for real-time implementation of quadratic filtering on commercial ultrasound scanners.
UR - http://www.scopus.com/inward/record.url?scp=4143081242&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4143081242&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:4143081242
SN - 1051-0117
VL - 2
SP - 1191
EP - 1194
JO - Proceedings of the IEEE Ultrasonics Symposium
JF - Proceedings of the IEEE Ultrasonics Symposium
Y2 - 5 October 2003 through 8 October 2003
ER -