A comparison of three-dimensional ultrasound, two-dimensional ultrasound and dissections for determination of lesion volume in tendons
| Autor: | Marta Ferrari, Alan M. Wilson, R. C. Payne, Renate Weller, Thilo Pfau |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Accuracy and precision
medicine.medical_specialty Acoustics and Ultrasonics Lesion Identification Coefficient of variation Biophysics Imaging phantom Imaging Three-Dimensional Tendon Injuries medicine Animals Radiology Nuclear Medicine and imaging Collagenases Horses Ultrasonography Radiological and Ultrasound Technology Phantoms Imaging business.industry Dissection Ultrasound Reproducibility of Results Repeatability Gold standard (test) Tendon medicine.anatomical_structure Radiology business Biomedical engineering |
| Zdroj: | Ultrasound in Medicine & Biology. 32:797-804 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2006.02.1418 |
| Popis: | The purpose of this work was to evaluate the accuracy and precision of a freehand three-dimensional (3-D) ultrasonography system in the determination of lesion volume in tendons. The accuracy and precision of a 3-D ultrasonography system was assessed by performing repeated measurements on a phantom of known volume. Volume measurements of tendon lesions performed with 3-D ultrasonography were compared with measurements based on a series of two-dimensional (2-D) ultrasound (US) scans and to direct measurements from dissections. A novel method for the creation of tendon lesions in vitro was developed. 3-D US showed excellent precision and accuracy in measurements of the phantom (mean measured volume = 3.76 mL, calculated volume = 3.77 mL, coefficient of variation (CoV) = 0.54%) and good repeatability in the determination of tendon lesions (repeatability coefficient = 0.00047). All three methods examined were repeatable (repeatability coefficient for 2-D US = 0.00032, repeatability coefficient for dissections = 0.00076). However, each of the methods produced different results and no constant relationship could be found between any of the measurement methods. Both 3-D and 2-D US proved to be repeatable techniques for the measurement of the volume of a tendon lesion. Even if they produced different results, each of them can be repeatedly used individually. It was not possible to define which one provided the most accurate value as a result of difficulties encountered in lesion identification on histology, and therefore the lack of a gold standard. |
| Databáze: | OpenAIRE |
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