Colour Doppler image analysis for tissue vascularity and perfusion: A preliminary clinical evaluation
| Autor: | Jeffrey C. Bamber, S.G. Kale, D C Crawford, Wolfgang Hirsch, V. R. McCready, D S Bell |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
medicine.medical_specialty
Acoustics and Ultrasonics media_common.quotation_subject Physical Exertion Biophysics Contrast Media Sensitivity and Specificity Vascularity Image Processing Computer-Assisted medicine Quantitative assessment Humans Contrast (vision) Plethysmograph Radiology Nuclear Medicine and imaging Ultrasonography Doppler Color Muscle Skeletal media_common Radiological and Ultrasound Technology business.industry Ultrasound Arteries Plethysmography Regional Blood Flow Colour doppler Blood Vessels Radiology medicine.symptom business Perfusion Clinical evaluation Blood Flow Velocity Biomedical engineering |
| Zdroj: | Ultrasound in Medicine & Biology. 21:1107-1117 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/0301-5629(95)02002-0 |
| Popis: | An automated system for measuring features of colour Doppler (CD) images has been examined for its ability to measure tissue perfusion in vivo under conditions of diffuse vascularity. Seven statistical features were extracted from CD images of human calf muscle and compared with the arterial input measured by plethysmography. It was found that, when appropriate scanning procedures are employed, good correlation is achieved with arterial input (r = 0.96 to 0.99). Ultrasound beam angle was important, even for the assessment of "colour area." A sensitive velocity scale was ideal for "percentage colour" (r = 0.979). "Mean colour velocity" correlates well with arterial input (r = 0.979) when the volocity scale was optimised for each CD scan. "Integrated colour velocity per unit area" was more responsive when using a variable velocity scale (r = 0.99) than a fixed velocity scale (r = 0.98), but was less responsive to low flow. Automated CD analysis speeds up the process of quantitative assessment of tissue vasculature and perfusion. It is therefore essential for the analysis of dynamic studies of ultrasound contrast agents and serial examinations when monitoring response to therapy. |
| Databáze: | OpenAIRE |
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