Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves
We present a method for skill characterisation of sonographer gaze patterns while performing routine second trimester fetal anatomy ultrasound scans. The position and scale of fetal anatomical planes during each scan differ because of fetal position, movements and sonographer skill. A standardised r...
| Main Authors: | , , , , , |
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| Format: | Conference item |
| Language: | English |
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Association for Computing Machinery
2022
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| _version_ | 1826313598643732480 |
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| author | Teng, C Lee, LH Lander, J Drukker, L Papageorghiou, AT Noble, JA |
| author_facet | Teng, C Lee, LH Lander, J Drukker, L Papageorghiou, AT Noble, JA |
| author_sort | Teng, C |
| collection | OXFORD |
| description | We present a method for skill characterisation of sonographer gaze patterns while performing routine second trimester fetal anatomy ultrasound scans. The position and scale of fetal anatomical planes during each scan differ because of fetal position, movements and sonographer skill. A standardised reference is required to compare recorded eye-tracking data for skill characterisation. We propose using an affine transformer network to localise the anatomy circumference in video frames, for normalisation of eye-tracking data. We use an event-based data visualisation, time curves, to characterise sonographer scanning patterns. We chose brain and heart anatomical planes because they vary in levels of gaze complexity. Our results show that when sonographers search for the same anatomical plane, even though the landmarks visited are similar, their time curves display different visual patterns. Brain planes also, on average, have more events or landmarks occurring than the heart, which highlights anatomy-specific differences in searching approaches. |
| first_indexed | 2024-03-07T07:33:37Z |
| format | Conference item |
| id | oxford-uuid:96f9642f-acf2-4042-bed9-a89f22988d22 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:17:28Z |
| publishDate | 2022 |
| publisher | Association for Computing Machinery |
| record_format | dspace |
| spelling | oxford-uuid:96f9642f-acf2-4042-bed9-a89f22988d222024-07-20T15:34:26ZSkill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curvesConference itemhttp://purl.org/coar/resource_type/c_5794uuid:96f9642f-acf2-4042-bed9-a89f22988d22EnglishSymplectic ElementsAssociation for Computing Machinery2022Teng, CLee, LHLander, JDrukker, LPapageorghiou, ATNoble, JAWe present a method for skill characterisation of sonographer gaze patterns while performing routine second trimester fetal anatomy ultrasound scans. The position and scale of fetal anatomical planes during each scan differ because of fetal position, movements and sonographer skill. A standardised reference is required to compare recorded eye-tracking data for skill characterisation. We propose using an affine transformer network to localise the anatomy circumference in video frames, for normalisation of eye-tracking data. We use an event-based data visualisation, time curves, to characterise sonographer scanning patterns. We chose brain and heart anatomical planes because they vary in levels of gaze complexity. Our results show that when sonographers search for the same anatomical plane, even though the landmarks visited are similar, their time curves display different visual patterns. Brain planes also, on average, have more events or landmarks occurring than the heart, which highlights anatomy-specific differences in searching approaches. |
| spellingShingle | Teng, C Lee, LH Lander, J Drukker, L Papageorghiou, AT Noble, JA Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title | Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title_full | Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title_fullStr | Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title_full_unstemmed | Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title_short | Skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| title_sort | skill characterisation of sonographer gaze patterns during second trimester clinical fetal ultrasounds using time curves |
| work_keys_str_mv | AT tengc skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves AT leelh skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves AT landerj skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves AT drukkerl skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves AT papageorghiouat skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves AT nobleja skillcharacterisationofsonographergazepatternsduringsecondtrimesterclinicalfetalultrasoundsusingtimecurves |