Nobuyuki Yamamoto1, Randall R Kinnick2, Mostafa Fatemi2, Takayuki Muraki1, John W Sperling3, Scott P Steinmann3, Robert H Cofield3, Eiji Itoi4, Kai-Nan An5. 1. Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN, USA. 2. Department of Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA. 3. Department of Orthopedic Surgery, Mayo Clinic College of Medicine, Rochester, MN, USA. 4. Department of Orthopaedic Surgery, Tohoku University School of Medicine, Sendai, Japan. 5. Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic, Rochester, MN, USA. an@mayo.edu.
Abstract
PURPOSE: Vibro-acoustography is a new imaging technique based on the dynamic radiation force of ultrasound. The purpose of this study was to apply this new imaging technique to the diagnosis of small partial-thickness rotator cuff tears and to determine how small of tears could be detected with this imaging technique. METHODS: Seven supraspinatus tendons excised from embalmed cadavers were used. Three different sizes of partial-thickness bursal-sided tears (1, 3, and 5 mm(3)) were created in each specimen. The intersection of two co-focused ultrasound beams of slightly different frequency was swept across the intended imaging area. The acoustic emission data were collected and used to form and display a vibro-acoustography image of the tendon. Vibro-acoustography images were read by two orthopedic surgeons. RESULTS: The rotator cuff tear could be detected by vibro-acoustography in all specimens. The diagnostic concordance rate was 90.5 % and the kappa coefficient value was 0.88, which resulted in a high concordance. The diagnostic concordance rate for the 1 mm tear was 71.3 %, which was low concordance (κ = 0.481), whereas that for the 3 and 5 mm tears was 100 %. CONCLUSIONS: We were able to detect a 3-mm tear by using vibro-acoustography. There is a possibility that this new imaging technique could become a useful imaging tool for the diagnosis of small partial-thickness rotator cuff tears.
PURPOSE: Vibro-acoustography is a new imaging technique based on the dynamic radiation force of ultrasound. The purpose of this study was to apply this new imaging technique to the diagnosis of small partial-thickness rotator cuff tears and to determine how small of tears could be detected with this imaging technique. METHODS: Seven supraspinatus tendons excised from embalmed cadavers were used. Three different sizes of partial-thickness bursal-sided tears (1, 3, and 5 mm(3)) were created in each specimen. The intersection of two co-focused ultrasound beams of slightly different frequency was swept across the intended imaging area. The acoustic emission data were collected and used to form and display a vibro-acoustography image of the tendon. Vibro-acoustography images were read by two orthopedic surgeons. RESULTS: The rotator cuff tear could be detected by vibro-acoustography in all specimens. The diagnostic concordance rate was 90.5 % and the kappa coefficient value was 0.88, which resulted in a high concordance. The diagnostic concordance rate for the 1 mm tear was 71.3 %, which was low concordance (κ = 0.481), whereas that for the 3 and 5 mm tears was 100 %. CONCLUSIONS: We were able to detect a 3-mm tear by using vibro-acoustography. There is a possibility that this new imaging technique could become a useful imaging tool for the diagnosis of small partial-thickness rotator cuff tears.
Keywords:
Diagnosis; Rotator cuff tear; Small tear; Vibro-acoustography
Authors: Glauber T Silva; Shigao Chen; Alejandro C Frery; James F Greenleaf; Mostafa Fatemi Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2005-11 Impact factor: 2.725
Authors: Matthew W Urban; Carl Chalek; Randall R Kinnick; Thomas M Kinter; Bruno Haider; James F Greenleaf; Kai E Thomenius; Mostafa Fatemi Journal: IEEE Trans Ultrason Ferroelectr Freq Control Date: 2011-06 Impact factor: 2.725
Authors: H Graichen; J Jakob; R von Eisenhart-Rothe; K-H Englmeier; M Reiser; F Eckstein Journal: Osteoarthritis Cartilage Date: 2003-07 Impact factor: 6.576
Authors: Azra Alizad; Dana H Whaley; Matthew W Urban; Rickey E Carter; Randall R Kinnick; James F Greenleaf; Mostafa Fatemi Journal: Breast Cancer Res Date: 2012-09-29 Impact factor: 6.466
Authors: Peter A Pellionisz; Nikan K Namiri; Gregory Suematsu; Yong Hu; Ameet Braganza; Khuzaima Rangwalla; Daniel J Denson; Karam Badran; Nathan C Francis; Ashkan Maccabi; George Saddik; Zachary Taylor; Maie A St John; Warren S Grundfest Journal: Yale J Biol Med Date: 2018-09-21