An interventional study of Ultrasound-aided articulation therapy in Speech Sound Disorder, sponsored by The University of Hong Kong. Recruiting at 1 site in Hong Kong. Open to participants aged 5 Years to 12 Years. Per ClinicalTrials.gov, last updated 2026-03-10.
Sponsored by The University of Hong Kong · Not applicable, Interventional, and Treatment
This prospective randomized controlled trial investigates the effect of ultrasound visual biofeedback as an adjunct to articulation therapy in children with speech sound disorders involving lingual targets. The intervention aims to facilitate acquisition of misarticulated sounds by providing real-time visualization of tongue movements. Participants are randomized 1:1 to immediate treatment or wait-list control, with stratification by disorder type, age, and gender where feasible. The wait-list control group continues usual care for 4 weeks before crossing over to receive the same intervention (ethical crossover design).
46 studies on the registry are indexed under Speech Sound Disorder; 16 are open to participants now.
This study's planned enrollment of 60 is above the median of 40 across 39 interventional studies indexed under Speech Sound Disorder.
Browse Speech Sound Disorder studies →The University of Hong Kong is the lead sponsor of 1,292 studies on the registry; 348 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Ultrasound-aided articulation therapy
Behavioral: Ultrasound-aided articulation therapy
No treatment for 4 weeks, and later having the same ultrasound-aided articulation therapy as immediate treatment group
The intervention under investigation is a motor-phonetic approach to articulation therapy, enhanced with ultrasound visual biofeedback (UVBF). The treatment group will receive the intervention immediately, while the waitlist control group will receive treatment after the initial group completes the study. This design allows for comparative outcome assessments between both groups, ensuring that all participants ultimately receive treatment.
20-item probe list accuracy
Perceptual accuracy on an individualized 20-item target sound probe spanning varying linguistic levels (single words to narrative), reported in percentage.
Time frame: Week0, Week4, Week8, Week16
Intelligibility in Context Scale (ICS): Traditional Chinese
A 7-item parent-report measure of functional intelligibility across communication partners (parents, immediate family, extended family, friends, acquaintances, teachers, strangers), rated on a 5-point scale for each item (total averaged score 1-5); higher scores indicate better intelligibility.
Time frame: Week1, Week 8, Week 16
Percentage Consonants Correct (PCC)
Derived from standardized perceptual speech assessment (HKCAT), a standardized word-level articulation test. PCC was calculated as the number of consonants produced correctly divided by total consonants, expressed as a percentage.
Time frame: Week0, Week 16
PedsQL TM (Pediatric Quality of Life Inventory TM)
A 23-item child self-report and parent-proxy measure of health-related quality of life across physical, emotional, social, and school functioning domains (score range 0-100); higher scores indicate better health-related quality of life.
Time frame: Week 0, Week 8,Week 16
Strengths and Difficulties Questionnaire (SDQ)
A 25-item parent-report behavioral screening tool assessing emotional symptoms, conduct problems, hyperactivity, peer problems, and prosocial behavior (total difficulties score range 0-40); higher scores indicate more behavioral difficulties.
Time frame: Week 0, Week 8, Week16
Parental Stress Scale (PSS)
An 18-item parent self-report measure of stress associated with parenting (score range 18-90); higher scores indicate greater parenting stress.
Time frame: Week0, Week 8, Week 16
Plan to share: No — The dataset contains sensitive information from a small number of pediatric participants, including speech recordings, video-derived accuracy scores, and clinical details, which could risk re-identification even after de-identification. Sharing is restricted under our institutional ethics approval.
Started Nov 2023 (actual). Primary completion is estimated for Aug 2026, 33 months after the start.
Of 23 interventional studies with no phase under Speech Sound Disorder, half reached primary completion within 57 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 57. This study's planned 33 months is below that.
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