Diagnostic Ultrasound, Exanimation, Palpation
Conditions
Keywords
Exanimation, Diagnostic Ultrasound, Palpation
Brief summary
This validation study compares clinical palpation and ultrasonographic measurements of tissue compressibility using standardized phantom models. Operators with different levels of clinical and ultrasound experience perform repeated, blinded assessments across multiple sessions. The study evaluates accuracy, reliability, agreement between modalities, and learning effects over time, aiming to support standardized and more objective assessment of tissue compressibility in clinical practice.
Interventions
BEHAVIORALUltrasonographic Compression Measurment and Palpation of Standardized Phantom Models
Repeated ultrasonographic compression measurements and palpation of standardized phantom models
Sponsors
Insel Gruppe AG, University Hospital Bern
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Medical professionals and medical students
Exclusion criteria
* Age \<18 years
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Accuracy and reliability of palpation and ultrasonographic compression measurements | Over 3 sessions, seperated by at least 1 day and at most 1 week (study duration: 3 days to 2 weeks) | Intraoperator and interoperator accuracy and reliability of palpation and ultrasonographic compression measurements on two phantom models as intraclass correlation coefficient and linear mixed-effects model |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Effect of operator characteristics on the measurement accuracy and reliability. | Over 3 sessions, seperated by at least 1 day and at most 1 week (study duration: 3 days to 2 weeks) | Operator characteristics (age, gender, level of experience) will be introduced as fixed effects in a linear mixed-effects model with a random effect for participants to account for repeated measurements |
| Assess the learning curve in palpation and ultrasound measurements | Over 3 sessions, seperated by at least 1 day and at most 1 week (study duration: 3 days to 2 weeks) | Changes in accuracy of both modalities using linear mixed-effects model with a random effect for participants to account for repeated measurements. To test possible confounding factors, they will be introduced as fixed effects. |
| Correlate the compression measurements with palpatory assessment | Over 3 sessions, seperated by at least 1 day and at most 1 week (study duration: 3 days to 2 weeks) | Correlation of both modalities using linear mixed-effects model with a random effect for participants to account for repeated measurements. To test possible confounding factors, they will be introduced as fixed effects. |
Countries
Switzerland
Outcome results
None listed