Texo Parameter Effects

From WikiSonix
Jump to: navigation, search

Introduction[edit]

In order to characterize the Sonix RP machine in terms of the relationship between its image and TEXO parameters, several experiments were conducted. To minimize variables, a default setting is applied to all parameters except for the variable in question. The default setting is as follows:


System SonixRP
Target Multipurpose ATS Phantom Model 539
Transducer L14-5/38
Imaging Depth 50 mm
Transmit Aperture 64 elements
Receive Aperture 32 elements
Transmit Frequency 9.5 MHz
Transmit Cycles 4 Cycles
Transmit Power 15
TGC 0.80 (80%)
Transmit Focus 25 mm (Depth/2)
Dynamic Focus ON
Mask 0xFFFFFFFF


In all the experiment, to avoid imaging artifacts, the first frame was ignored and the second frame was used in the study.

Transmit Frequency Effects[edit]

The first experiment will determine the effects of pulse frequency on the return echo pulse shape. In this experiment, the frequency was varied from 4 MHz ~ 10 MHz.


Results



Burst Cycle Effects[edit]

The second experiment will determine the effects of pulse length on the return echo pulse shape. In this experiment, the length of the transmitted burst was set at 2, 4, and 8 cycles.


Results


Varying Power Level[edit]

This experiment will determine the effects of varying power level on the return echo pulse shape. In this experiment, the power level was varied from 5 to 15.


Results


Varying TGC Setting[edit]

This experiment will determine the effects of varying TGC setting on the return echo pulse shape. In this experiment, the TGC was varied from 0% to 100% in 10% increments.


Results


Varying Transmit Aperture Size[edit]

A series of scans were taken at different transmit to receive aperture ratios: Tx/Rx: 64/32, 32/32, 16/32, 8/32


Results


Varying Receive Aperture Size[edit]

A series of scans were taken at different transmit to receive aperture ratios: Tx/Rx: 16/32, 16/16, 16/8, 16/4


Results


Masking Mechanism Characterization[edit]

In order to depict the masking mechanism, a series of scans were taken using different masks.


Results


Dynamic Focus[edit]

Finally, to display the effect of dynamic focus it is turned on and off for two scans.


Results