|
KMID : 1151820170110040221
|
|
Journal of the Korean Society of Radiology
2017 Volume.11 No. 4 p.221 ~ p.225
|
|
|
The Effect of Acoustic Velocity of Ultrasonographic Equipment Using an N-365 Multipurpose Phantom
|
|
Kim Yon-Min
Shim Jae-Goo
Kim Sang-Hyun
|
|
|
Abstract
|
|
|
|
To evaluate the performance of ultrasound imaging system, we investigated the change of spatial resolution according to changing sonic velocity change parameter provided by ultrasound equipment. Ultrasound phantom images were obtained using a 3.0 ~ 5.0 MHz convex transducer in an ultrasound diagnostic device used at a medical institution located at Iksan. N-365 multi-purpose ultrasound phantom was used to measure longitudinal distance measurement accuracy and longitudinal and transverse resolution. In the same manner, the sonic velocity of the ultrasound equipment was changed from 1580 m/sec to 1400 m/sec in six steps, and the full width at half maximum(FWHM) was measured using the image J program to determine whether the measured values were different. As a result, lateral resolution was measured from 1.91 mm to 5.3 mm according to the speed change, and the smallest FWHM was 1.91 mm at 1420 m/sec. The axial resolution was measured from 1.03 mm to 1.14 mm according to the speed change, and the smallest FWHM was 1.03 mm at 1400 m/sec. The slower the sound velocity of the ultrasound equipment, the shorter the length of longitudinal measurement.
|
|
|
KEYWORD
|
|
|
Ultrasound equipment, Quality control, Full width at half maximum, Ultrasound phantom
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|