Abstract
About this talk
Childhood is divided into several age groups such as infant, toddler, middle child, older child and adolescent. The selection of a probe to obtain a clear image depends on many factors, especially body size, which is in line with age. With all these different details and in actual practice, the choice of probe is still highly subjective, and depends on the familiarity of each examiner. Although there is a user guide, it only provides brief information, so there is no clear guideline or empirical data to recommend. This results in wasted time in testing and selecting the most suitable probe before testing, and affects the budget for purchasing a variety of probes to cover children of all ages. This research aimed to study the body size and age appropriateness for each frequency of the four probes. Retrospective studies in sample of 160 subjects. Age 7.2±7.6 years BSA 0.78±0.6 m2 weight 24.5±26.0 kg. The body size response that is most suitable for the 1-5 MHz probe is BSA 0.7–1.82 m2, 4-12 MHz probe is 0.10–0.18 m2, 3-8 MHz probe is 0.27–0.95 m2, and 2-9 MHz probe is 0.18–0.69 m2. Comparison between probes 3-8 vs. 2-9 showed no statistically significant difference in body size (BSA 0.61±0.21 vs 0.49±0.23 m2, P-value 0.354), although the age at which the two probes responded was statistically significantly different (Age 3.96 ± 2.56 vs 1.6 ± 0.48 years, P-value < 0.05). In terms of image quality, these two probes provide clear images with similar body sizes. Knowledge from this research can be used to inform the selection and procurement of probes.
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