Transverse Strains in Muscle Fascicles during Voluntary Contraction: A 2D Frequency Decomposition of B-Mode Ultrasound Images
المؤلفون المشاركون
Wakeling, James M.
Randhawa, Avleen
المصدر
International Journal of Biomedical Imaging
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-09-25
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
الملخص EN
When skeletal muscle fibres shorten, they must increase in their transverse dimensions in order to maintain a constant volume.
In pennate muscle, this transverse expansion results in the fibres rotating to greater pennation angle, with a consequent reduction in their contractile velocity in a process known as gearing.
Understanding the nature and extent of this transverse expansion is necessary to understand the mechanisms driving the changes in internal geometry of whole muscles during contraction.
Current methodologies allow the fascicle lengths, orientations, and curvatures to be quantified, but not the transverse expansion.
The purpose of this study was to develop and validate techniques for quantifying transverse strain in skeletal muscle fascicles during contraction from B-mode ultrasound images.
Images were acquired from the medial and lateral gastrocnemii during cyclic contractions, enhanced using multiscale vessel enhancement filtering and the spatial frequencies resolved using 2D discrete Fourier transforms.
The frequency information was resolved into the fascicle orientations that were validated against manually digitized values.
The transverse fascicle strains were calculated from their wavelengths within the images.
These methods showed that the transverse strain increases while the longitudinal fascicle length decreases; however, the extent of these strains was smaller than expected.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Wakeling, James M.& Randhawa, Avleen. 2014. Transverse Strains in Muscle Fascicles during Voluntary Contraction: A 2D Frequency Decomposition of B-Mode Ultrasound Images. International Journal of Biomedical Imaging،Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036315
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Wakeling, James M.& Randhawa, Avleen. Transverse Strains in Muscle Fascicles during Voluntary Contraction: A 2D Frequency Decomposition of B-Mode Ultrasound Images. International Journal of Biomedical Imaging No. 2014 (2014), pp.1-9.
https://search.emarefa.net/detail/BIM-1036315
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Wakeling, James M.& Randhawa, Avleen. Transverse Strains in Muscle Fascicles during Voluntary Contraction: A 2D Frequency Decomposition of B-Mode Ultrasound Images. International Journal of Biomedical Imaging. 2014. Vol. 2014, no. 2014, pp.1-9.
https://search.emarefa.net/detail/BIM-1036315
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1036315
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر