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A-0206 Comparison of Contact and Non-contact Ultrasound Examination of the Hand
Rebecca Lim 1, Chin Shu Ting 2, Chan Kai Li 2, Abby Choke 1, Tay Shian Chao 1,2, Duncan Angus McGrouther 1,2, 1 Department of Hand Surgery, Singapore General Hospital, Singapore; 2 Biomechanics Laboratory, Singapore General Hospital, Singapore
Thursday, June 14, 2018 · 8:25 a.m. · 04m 14s
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well okay good morning everybody so today my uh topic is on the
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comparison of contact and non contact after sound examination of hand
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so that's i i'll just another fee has been widely used in many emergency evaluations
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and the fact is that uh when g. s. was in pediatrics factors
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however the rate of uptake in hand surgery outpatient clinical
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setting has been low despite its good fifty profile
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so so on a graphic evaluation of the hands and feet requires a high resolution ultrasound
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in addition the curve surface of hand results in some optimal contact between the transducer and the skin
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suppressing the pro on in an on inject tissue also causes significant discomfort on the
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patient and using an ample amount of gel has also not been satisfactory
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so what about techniques uh s. ultrasound waves are able to transmit through walls that
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uh what about i'll just sounds that eliminates the challenges of skin pro contact issues with ultrasound
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so this is how the setup of our study is so the containers still
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with three quarters of water which can mess about how awful on
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the volunteers hand is a message to the what the bar with the part of it had
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to be in age a few centimetres about forty five c. m. beneath the water service
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and it's getting this done using probes operating frequency contented top hat
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place that bring distance from schemes that this at a distance of wanted to see em was
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found to get a satisfactory non contact niche the study images but then record it
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for the staffing in h. identification we actually used twenty five hand surgeons and a photograph
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of the pro orientation accompany each image of the contact versus non contact method
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that surgeons were then asked to identify and outline the structures
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and the results were correlated for inter rater reliability
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this is an example of the first also into recite apart we do the ultrasound so the
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process place about wanted to see i'm from the best also interested in what the bar
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and er non contact ultrasound as you can see the uh the structure can be clearly
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did you need to but as for the job pro the structures visibly effect and
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results
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on statistical advice we use the inter class correlation coefficient i see three
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to correlate the rate of accurate identification of four different structures
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the high value show us that more people can accurately identified at the f. zero point eight six
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and a little value shows the opposite as zero point three two for the hypo tina and in and
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the p. s. that but to show us more before mobile this more difficult to recognise it with the contact group technique
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the high i think the values for will to bar versus job put technique
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shows that structure recognition is that uh with the what about it
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moving on to discussion
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uptake of diagnostic ultrasound in clinical hand surgery has been slow in a number
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of events can be identified base so the plot contacted transducers are conscious
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some of the reasons to restrict ultrasound evaluation about about technique overcomes these limitations
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and the reason that a static ultrasound images to knock to the bucket anatomical concept
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maybe partly due to the soft tissue distortion that accompanies the use of a handheld pro and joe
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this study illustrates the ability of the bar contact what about technique
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to produce high resolution images into the go to image can be a hand regions
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either identification of structured and i told him she was greatly facilitated by dynamic movement
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advantages of the what about technique of internal structures are not distorted by
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external pressure and it's dead for easier to understand anatomical relationships
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so what about let the conclusion is that he's of anatomical identification i can be
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useful to dynamic studies and they used to be considered in outpatient clinical setting
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the sunlight acknowledgements
Conference Program
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Rebecca Lim 1, Chin Shu Ting 2, Chan Kai Li 2, Abby Choke 1, Tay Shian Chao 1,2, Duncan Angus McGrouther 1,2, 1 Department of Hand Surgery, Singapore General Hospital, Singapore; 2 Biomechanics Laboratory, Singapore General Hospital, Singapore
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