Effects of position and operator on high-frequency ultrasound scan quality
| Autor: | Ruth S. Burk, Angela Parker, Christine M. Schubert, Mary Jo Grap, Lisa Sievers, Melissa Bucalan Rooney, Anathea Pepperl |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Image quality Posture Critical Care Nursing Article Young Adult Operator (computer programming) Quality (physics) Position (vector) mental disorders Prone Position Humans Medicine Nursing Assessment Ultrasonography Pressure Ulcer Sacrococcygeal Region business.industry Ultrasound Middle Aged Random effects model Surgery Prone position Female Clinical Competence Nuclear medicine business psychological phenomena and processes High frequency ultrasound |
| Zdroj: | Intensive and Critical Care Nursing. 31:148-154 |
| ISSN: | 0964-3397 |
| DOI: | 10.1016/j.iccn.2014.11.001 |
| Popis: | Summary Objectives High-frequency ultrasound may evaluate those at risk for pressure ulcers. Images may be obtained by clinicians with limited training. The prone position is recommended for obtaining sacral scans but may not be feasible in the critically ill. This study investigated image quality using multiple operators and a variety of patient positions. Research methodology Sacral scans were performed in three randomised positions in 50 volunteers by three different investigators using a 20 MHz ultrasound system. General linear models and ANOVA random effects models were used to examine the effects of operator and position on image quality rating, and measures of dermal thickness and dermal density. Results The best scan for each position and operator was used for analysis ( n = 447 images). Image rating varied by operator ( p = 0.0004), although mean ratings were 3.5 or above for all operators. Dermal thickness was less for the prone position than in 90° or 60° side-lying positions ( p = 0.0137, p = 0.0003). Dermal density was lower for the prone position than for the 90° or 60° positions ( p Conclusions These data show that overall scan quality was acceptable in all positions with all operators. However, differences were found between side-lying positions and the prone for dermal thickness and dermal density measures. |
| Databáze: | OpenAIRE |
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