| Home | E-Submission | Sitemap | Contact Us |  
Clin Ultrasound > Accepted Articles
Right Ventricular Segmental Rotation and Torsion in Normal Subjects Evaluated by 2D Speckle Tracking Echocardiography
Hyun Suk Yang1 , Farouk Mookadam2, Bijoy K. Khandheria2, Krishnaswamy Chandrasekaran2
1Konkuk University Medical Center, Seoul, Korea
2Division of Cardiovascular Diseases, Mayo Clinic, Scottsdale, AZ, United States
Address for Correspondence:  Hyun Suk Yang ,Tel: 82-10-7523-0864, Fax: 82-2-2030-7748, Email: yang.hyun@gmail.com
Received: 4 October 2022;  Accepted: 12 October 2022.  Published online: 12 October 2022.
Background: Right ventricular (RV) torsion is not well-defined due to its complex anatomy. The present study was designed to assess RV's global and segmental torsional motion in subjects without cardiac pathologies.
We used the Vivid 7 ultrasound system (GE Healthcare, Chicago, IL USA) for acquiring parasternal short-axis views of the RV at the basal and apical levels and analyzed global and segmental torsion using the 2D speckle-tracking algorithm in EchoPAC workstation software.
Forty-eight individuals (44±17 years, male 54%) were included, with either normal LV diastolic function (group I, n=40) or grade I diastolic dysfunction (group II, n=8). Group I showed systolic counterclockwise rotation at the apex (7.7±6.2 degrees) and clockwise rotation at the base (-1.2±2.8 degrees) of the RV, resulting in global peak systolic torsion of 9.0±6.6 degrees with higher segmental torsion in the mid-interventricular septum (IVS) than anterior walls (P=0.001). Global RV torsion showed a very strong positive correlation with apical rotation (r=0.91, P=0.001). Group I revealed higher segmental torsion in the anterior-IVS and mid-IVS walls than group II (9.8±7.1 vs. 3.5±9.6 degrees, P=0.036; 10.4±9.1 vs. 2.4±12.3 degrees, P=0.038, respectively).
Analysis of RV segmental torsion was feasible using a 2D-speckle tracking algorithm. Apical rotation can be used as a simplified index of global RV torsion. Further studies are needed to evaluate its clinical impact in various disease states.
Keywords: two-dimensional speckle tracking; echocardiography; right ventricle; torsion
PDF Links  PDF Links
Full text via DOI  Full text via DOI
Download Citation  Download Citation
Related article
Right Ventricular Segmental Rotation and Torsion in Normal Subjects on 2D Speckle Tracking Echocardiography  2022 November;7(2)
Editorial Office
The Korean Association of Clinical Ultrasound
#1711, Hanshin Building, 12, Mapo-daero, Mapo-gu, Seoul, South Korea 04175
TEL: +82-2-702-4001, Fax: +82-2-373-1106, E-mail: journal@kacu.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Association of Clinical Ultrasound.                 Developed in M2PI