Quality Assessment of Ultrasonographic Equipment Using an ATS-539 Multipurpose Phantom
Journal of the Korean Radiological Society
;
: 533-541, 2008.
Artigo
em Coreano
| WPRIM
| ID: wpr-172782
ABSTRACT
PURPOSE:
To determine the rate of congruence and to standardize assessment of US (ultrasound) phantom images with the use of an ATS-539 multipurpose phantom for US equipment currently utilized in Korea MATERIALS ANDMETHODS:
US phantom images were scanned with a 3.0-5.0 MHz convex transducer and were digitized by use of an analogue-digital converter. Members of a committee with consent evaluated the US phantom images from 108 types of ultrasound equipment. The dead zone, vertical and horizontal measurement, axial/lateral resolution, focal zone, sensitivity, functional resolution and gray scale/dynamic range were evaluated. Congruence or incongruence of ultrasound equipment was determined based on the results of dead zone, axial/lateral resolution and gray scale/dynamic range measurements. Other factors were evaluated for the possibility as criteria with the use of the Mann-Whitney U test and receiver operator characteristic (ROC) curve analysis.RESULTS:
The dead zone, axial/lateral resolution and gray scale/dynamic range were 91.7%, 94.4% and 76.9%, respectively, for suitable US equipment. Considering all three factors, 78 types of ultrasound equipment were passed. The congruence rate of focal zone and functional resolution were 62.4% and 69.3% of the US equipment, respectively.CONCLUSION:
Of the US equipment, 72.2% of the equipment was acceptable based on the dead zone, axial/lateral resolution, and gray scale/dynamic range measurements as determined with the use of an ATS-539 phantom. Focal zone and 8 mm-functional resolution can be useful as a standard in the assessment of a US phantom image.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Controle de Qualidade
/
Transdutores
/
Coreia (Geográfico)
Tipo de estudo:
Estudo prognóstico
País/Região como assunto:
Ásia
Idioma:
Coreano
Revista:
Journal of the Korean Radiological Society
Ano de publicação:
2008
Tipo de documento:
Artigo
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