• Journal of the Korean Society of Radiology
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• v.18 no.5
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• pp.473-481
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• 2024

As a result of measuring and evaluating 24 units of 10 types of medical ultrasonic equipment in Gwangju using the multipurpose ultrasonic phantom (ATS-539), all 24 units were 100% passed in the non-inspection area, vertical distance measurement, horizontal distance measurement, axial/side resolution, gray tone and dynamic range items. As a result of analyzing the ultrasonic phantom pass rate according to the number of years of use of ultrasonic equipment in Gwangju, this study derived that the service life of ultrasonic equipment is related to the equipment performance. As the coverage for ultrasonic inspection is gradually expanded starting with the upper abdominal ultrasound, it is time to further manage the quality of ultrasonic inspection. Therefore, in addition to the standard guidelines for performance measurement for abdominal inspection, research on equipment phantom measurement methods and standards that can be used in various ultrasonic inspection areas such as the neck and chest, which have recently become increasingly important in clinical practice, should be conducted at the same time. In addition, quality control standards should be legally established to maintain the optimal performance of ultrasonic imaging devices and to secure the appropriateness of images. In addition, ultrasound imaging devices should be classified as special medical equipment, and it is considered that the level of equipment should be consistently maintained through continuous management so that images beneficial to treatment can be obtained.

• Journal of radiological science and technology
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• v.37 no.4
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• pp.295-305
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• 2014

This study is to provide accurate information as medical imaging equipment to check for the presence of body disease US equipment. We investigated the status of medical US equipment performance in Daegu and criteria US phantom (ATS-539) for US equipment performance measurements. The results in this study, 1. US phantom measurement results: The test passed rate were 88.6% and the failed rate were 11.4%. 2. The difference between the group of mean and the pass/failed groups were statistically significant. Focal zone and 4 mm functional resolution in the two items that are not present the passing standard. 3. The difference was statistically significant number of years and used equipment and pass the failed equipment (4.13 vs 7.25 years). We investigated the performance status of US equipment used in the clinical area in Daegu. The basis for the two items are not present this proposed passing standard. Equipment performance was associated with the number of years of using US equipment. It is necessary to maintain the best performance of the equipment phantom measurements for performance testing of US equipment.

• Journal of the Korean Society of Radiology
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• v.16 no.7
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• pp.975-984
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• 2022

Since a linear transducer has an area of interest equal to the length of the transducer, the area of interest can be expanded using the virtual convex function installed in the device.However, it was thought that the change in the direction of the ultrasonic sound velocity according to the change in the visual area of interest would affect the image quality, so this was objectively confirmed. For this study, image evaluation and SNR·CNR of the phantom for ultrasound quality control were measured. As a result, in the phantom image evaluation, both images were able to identify structures in functional resolution, grayscale, and dynamic range. However, it was confirmed that the standard image was excellent in the reproducibility of the size and shape of the structure. As a result of SNR·CNR evaluation, SNR·CNR of most trapezoidal images was low, except for structures at specific locations. In addition, through the statistical analysis graph, it was further confirmed that the SNR and CNR for each depth decreased as the size of the cystic structure decreased. Through this study, it was confirmed that the use of the function has the advantage of providing a wide visual area of interest, but it has an effect on the image quality. Therefore, when using the virtual convex function, it is judged that the examiner should use it in an appropriate situation and conduct various studies to acquire high-quality images and to improve the understanding and proficiency of the equipment.