Blood Velocities Estimation using Ultrasound
(2013) MASM01 20132Mathematical Statistics
- Abstract (Swedish)
- This thesis consists of two parts. In the rst part, the iterative data-adaptive BIAA
spectral estimation technique was extended to estimate lateral blood velocities using
ultrasound scanners. The BIAA method makes no assumption on samples depth
or sampling pattern, and therefore allows for transmission in duplex mode imaging.
The technique was examined on a realistic Field II simulation data set, and showed
fewer spectral artifacts in comparison with other techniques. In the second part of
the thesis, another common problem in blood velocity estimation has been investigated,
namely strong backscattered signals from stationary echoes. Two methods
have been tested to examine the possibility of overcoming this problem. However,
... (More) - This thesis consists of two parts. In the rst part, the iterative data-adaptive BIAA
spectral estimation technique was extended to estimate lateral blood velocities using
ultrasound scanners. The BIAA method makes no assumption on samples depth
or sampling pattern, and therefore allows for transmission in duplex mode imaging.
The technique was examined on a realistic Field II simulation data set, and showed
fewer spectral artifacts in comparison with other techniques. In the second part of
the thesis, another common problem in blood velocity estimation has been investigated,
namely strong backscattered signals from stationary echoes. Two methods
have been tested to examine the possibility of overcoming this problem. However,
neither of these methods resulted in a better estimation of the blood velocities, most
likely as the clutter characteristics in color
ow images vary too rapidly to allow for
this form of models. This might be a result of the non-stationary tissue motions
which could be caused by a variety of factors, such as cardiac activities, respiration,
transducer/patient movement, or a combination of them. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/4175205
- author
- Pirnia, Elham
- supervisor
- organization
- course
- MASM01 20132
- year
- 2013
- type
- H2 - Master's Degree (Two Years)
- subject
- language
- English
- id
- 4175205
- date added to LUP
- 2013-11-26 11:01:39
- date last changed
- 2013-11-26 11:01:39
@misc{4175205, abstract = {{This thesis consists of two parts. In the rst part, the iterative data-adaptive BIAA spectral estimation technique was extended to estimate lateral blood velocities using ultrasound scanners. The BIAA method makes no assumption on samples depth or sampling pattern, and therefore allows for transmission in duplex mode imaging. The technique was examined on a realistic Field II simulation data set, and showed fewer spectral artifacts in comparison with other techniques. In the second part of the thesis, another common problem in blood velocity estimation has been investigated, namely strong backscattered signals from stationary echoes. Two methods have been tested to examine the possibility of overcoming this problem. However, neither of these methods resulted in a better estimation of the blood velocities, most likely as the clutter characteristics in color ow images vary too rapidly to allow for this form of models. This might be a result of the non-stationary tissue motions which could be caused by a variety of factors, such as cardiac activities, respiration, transducer/patient movement, or a combination of them.}}, author = {{Pirnia, Elham}}, language = {{eng}}, note = {{Student Paper}}, title = {{Blood Velocities Estimation using Ultrasound}}, year = {{2013}}, }