MEASURING SPHERE-LIKE STRUCTURES USING TRANSRECTAL ULTRASONOGRAPHY

Sphere–like structures are commonly measured for clinical or research purposes. We measured two diameters, the circumference (perimeter) and cross sectional area of 113 equine ovarian follicles in a water bath then determined the relationships between those measurements and the actual volume of flui...

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Bibliographic Details
Published in:Veterinary radiology & ultrasound 2000-03, Vol.41 (2), p.178-180
Main Authors: Löfstedt, Robert M., Ireland, William P.
Format: Article
Language:English
Subjects:
Analysis of Variance
Animals
Female
follicles
Horses - anatomy & histology
measurement
Ovarian Follicle - anatomy & histology
Ovarian Follicle - diagnostic imaging
Rectum
Regression Analysis
sphere-like
table
trans-rectal
Ultrasonography
volume
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Summary:Sphere–like structures are commonly measured for clinical or research purposes. We measured two diameters, the circumference (perimeter) and cross sectional area of 113 equine ovarian follicles in a water bath then determined the relationships between those measurements and the actual volume of fluid in the follicles. Cross–sectional area, diameter3 and area2/3 were all highly correlated with the volume of the structures and superior (p0.05) between cross‐sectional area, diameter3, and area2/3. Because of the ease of measuring diameter, we suggest that diameter3 be used to estimate the actual size of sphere‐like structures by ultrasonographic measurement. A table was generated for clinical use to show how much the largest diameter of a fluid‐filled structure (follicle, cyst, hematoma, etc.) would have to increase or decrease to indicate a significant change in the volume of the structure.
ISSN:1058-8183
1740-8261
DOI:10.1111/j.1740-8261.2000.tb01474.x