Dynamic measurement of pennation angle of gastrocnemius muscles during contractions based on ultrasound imaging
نویسندگان
چکیده
منابع مشابه
Dynamic measurement of pennation angle of gastrocnemius muscles during contractions based on ultrasound imaging
BACKGROUND Muscle fascicle pennation angle (PA) is an important parameter related to musculoskeletal functions, and ultrasound imaging has been widely used for measuring PA, but manually and frame by frame in most cases. We have earlier reported an automatic method to estimate aponeurosis orientation based on Gabor transform and Revoting Hough Transform (RVHT). METHODS In this paper, we propo...
متن کاملReliability of Ultrasound Measures of M. Gastrocnemius Pennation Angle
There are currently few studies in the literature concerning the reliability and validity of the quantification of parameters of muscle architecture using the technique of ultrasound. The aim of this study is to apply the technique of ultrasound imaging to quantify pennation angle of gastrocnemius muscle (medial and lateral) and to determine the reliability and reproducibility of these measures...
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The aim of the present study was to quantify changes in human skeletal muscle pennation angle (F theta) values during growth and adult life. The human gastrocnemius medialis muscle of 162 subjects (96 males and 66 females) in the age range 0-70 years was scanned with ultrasonography. The subjects were laying prone, at rest, with the ankle maintained at 90 degrees with all muscles relaxed. F the...
متن کاملEffect of Transducer Orientation on Errors in Ultrasound Image-Based Measurements of Human Medial Gastrocnemius Muscle Fascicle Length and Pennation
Ultrasound imaging is often used to measure muscle fascicle lengths and pennation angles in human muscles in vivo. Theoretically the most accurate measurements are made when the transducer is oriented so that the image plane aligns with muscle fascicles and, for measurements of pennation, when the image plane also intersects the aponeuroses perpendicularly. However this orientation is difficult...
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ژورنال
عنوان ژورنال: BioMedical Engineering OnLine
سال: 2012
ISSN: 1475-925X
DOI: 10.1186/1475-925x-11-63