PMID- 12578136
OWN - NLM
STAT- MEDLINE
DCOM- 20030318
LR  - 20190916
IS  - 0885-3010 (Print)
IS  - 0885-3010 (Linking)
VI  - 50
IP  - 1
DP  - 2003 Jan
TI  - A simulation study of sample volume sensitivity for oblique pulsed finite beam 
      insonation of Doppler ultrasound flow phantom cylindrical vessels.
PG  - 58-67
AB  - Our previous analysis of the lumen pressure in Doppler ultrasound flow phantoms 
      subject to continuous wave, infinite beam excitation is extended here to consider 
      the pressure and Doppler sample volume complex sensitivity within a range of 
      solid absorbent tubes typical of those used in Doppler ultrasound flow phantoms 
      insonated with a focussed pulsed ultrasound beam. The beam may be incident on the 
      cylindrical shell from any angle and with any offset from the shell axis. The 
      examples considered are of a 5 MHz beam with a 6 dB lateral fullwidth of 1 mm at 
      the focus and a transducer surface acceleration pulse with standard deviation of 
      1 micros propagating through 10 mm outer diameter, 8 mm inner diameter, Cflex, 
      low-density polyethylene (LDPE), high-density polyethylene (HDPE), and 
      polymethylmethacrylate (PMMA) shells surrounded by water at various beam-vessel 
      angles. Our results confirm earlier analyses suggesting that PMMA, being less 
      well matched to the surrounding media, causes much greater distortion of the 
      sample volume sensitivity than Cflex.
FAU - Steel, Robin
AU  - Steel R
AD  - School of Informatics, University of North Wales, Bangor, LL57 1UT, UK. 
      robin@informatics.bangor.ac.uk
FAU - Fish, Peter J
AU  - Fish PJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - IEEE Trans Ultrason Ferroelectr Freq Control
JT  - IEEE transactions on ultrasonics, ferroelectrics, and frequency control
JID - 9882735
RN  - 0 (Plastics)
RN  - 059QF0KO0R (Water)
RN  - 9002-88-4 (Polyethylene)
RN  - 9011-14-7 (Polymethyl Methacrylate)
SB  - IM
MH  - Blood Flow Velocity
MH  - Blood Pressure
MH  - Blood Vessels/*diagnostic imaging
MH  - Computer Simulation
MH  - Elasticity
MH  - Fourier Analysis
MH  - Hemodynamics
MH  - Models, Cardiovascular
MH  - *Phantoms, Imaging
MH  - *Plastics
MH  - Polyethylene
MH  - Polymethyl Methacrylate
MH  - Sensitivity and Specificity
MH  - Ultrasonography, Doppler, Pulsed/*instrumentation/*methods
MH  - Water
EDAT- 2003/02/13 04:00
MHDA- 2003/03/19 04:00
CRDT- 2003/02/13 04:00
PHST- 2003/02/13 04:00 [pubmed]
PHST- 2003/03/19 04:00 [medline]
PHST- 2003/02/13 04:00 [entrez]
AID - 10.1109/tuffc.2003.1176525 [doi]
PST - ppublish
SO  - IEEE Trans Ultrason Ferroelectr Freq Control. 2003 Jan;50(1):58-67. doi: 
      10.1109/tuffc.2003.1176525.