مشروع البحث: Ultrasoun imaging theoritical and evalution study
| dc.contributor.advisor | د.ايوب محمد الباروني | |
| dc.date.accessioned | 2026-06-10T10:33:12Z | |
| dc.date.available | 2026-06-10T10:33:12Z | |
| dc.description | An ultrasound image is formed by scanning an ultrasound beam over a body section. In each scan line or beam position a pulse is transmitted into the body. If there are structures within the beam that produce reflections, the echo pulses return to the transducer where they are converted into an electrical pulse and processed to form the image. The resulting image is essentially a map showing the echo producing sites. Two factors are used to determine the location of the echo producing structures. The depth or distance from the transducer to a site is measured by the time interval between the transmission of the pulse and the reception of the returning echo. The horizontal or lateral location of an echo site is determined by knowing the location of the beam that produced a specific echo[1-2]. Ultrasound includes all sound waves above the frequency of human hearing about 20 thousand Hertz, or cycles per second. Medical ultrasound generally uses frequencies between 1 of 10 million Hertz (1–10MHz). Higher frequency ultrasound waves produce more detailed images, but are also more readily absorbed and so cannot penetrate as deeply into the body. | |
| dc.description.abstract | An ultrasound image is formed by scanning an ultrasound beam over a body section. In each scan line or beam position a pulse is transmitted into the body. If there are structures within the beam that produce reflections, the echo pulses return to the transducer where they are converted into an electrical pulse and processed to form the image. The resulting is essentially a map showing the echo producing sites. In this work blood flow velocities in different types of blood vessels (normal and abnormal) where evaluated in terms of different transmitted frequencies, and different Doppler angles. Also the possible errors in different Doppler angles were evaluated. Evaluation of the Doppler shifted frequencies for different probes and different Doppler angles for each transmitted frequency were taken into consideration, using the Matlab program. The graphical representation of the velocity of the blood flow versus the Doppler angles for different frequencies in different types of blood vessels (normal and abnormal) were given in this work. The results and the graphical representation of the blood flow rates in different blood vessels (normal and abnormal)for different transmitted frequencies, and Doppler angels were given also. The obtained results are in the same order of magnitude of the published results. | |
| dc.identifier | 5935 | |
| dc.identifier.uri | https://dspace.academy.edu.ly/handle/123456789/2276 | |
| dc.subject | imaging theoritical and evalution study | |
| dc.title | Ultrasoun imaging theoritical and evalution study | |
| dspace.entity.type | Project | |
| project.endDate | 2015 | |
| project.funder.name | الهندسة الطبية | |
| project.investigator | جمعة محمد صالح | |
| project.startDate | 2014 |