OBJECTIVE: To analyze and to describe the shape and contraction of the normal right ventricle (RV) as visualized by magnetic resonance imaging (MRI). METHODS: Thirty normal volunteers were imaged using cine MRI in axial, short-axis, and long-axis planes. The shape and contraction of the RV were qualitatively evaluated. Quantitative evaluation of RV shape was performed by calculating the angle subtended between the planes of horizontal long-axis view (HLA) and axial view and the RV base-to-apex distance. Multiplanar reformation was used to visualize changes between corresponding views. RESULTS: The spectrum of major RV shape (wedge, box, and round) was more variable on axial images (17%, 43%, and 23%, respectively) than on HLA images (63%, 20%, and 0%, respectively). Focal outpouching of the RV free wall was more frequent on the axial view than on the HLA view. The subtended plane angle and base-to-apex distance showed statistically significant dependence indicative of an artificially foreshortened RV in the axial view with a direct influence on RV variations. CONCLUSIONS: With increasing subtended angles, variation of the normal RV appearance is substantially higher on axial views compared with HLA views.
OBJECTIVE: To analyze and to describe the shape and contraction of the normal right ventricle (RV) as visualized by magnetic resonance imaging (MRI). METHODS: Thirty normal volunteers were imaged using cine MRI in axial, short-axis, and long-axis planes. The shape and contraction of the RV were qualitatively evaluated. Quantitative evaluation of RV shape was performed by calculating the angle subtended between the planes of horizontal long-axis view (HLA) and axial view and the RV base-to-apex distance. Multiplanar reformation was used to visualize changes between corresponding views. RESULTS: The spectrum of major RV shape (wedge, box, and round) was more variable on axial images (17%, 43%, and 23%, respectively) than on HLA images (63%, 20%, and 0%, respectively). Focal outpouching of the RV free wall was more frequent on the axial view than on the HLA view. The subtended plane angle and base-to-apex distance showed statistically significant dependence indicative of an artificially foreshortened RV in the axial view with a direct influence on RV variations. CONCLUSIONS: With increasing subtended angles, variation of the normal RV appearance is substantially higher on axial views compared with HLA views.
Authors: Anderson H Kuo; Cun Li; Hillary F Huber; Matthias Schwab; Peter W Nathanielsz; Geoffrey D Clarke Journal: J Physiol Date: 2017-05-18 Impact factor: 5.182
Authors: Neda Rastegar; Jeremy R Burt; Celia P Corona-Villalobos; Anneline S Te Riele; Cynthia A James; Brittney Murray; Hugh Calkins; Harikrishna Tandri; David A Bluemke; Stefan L Zimmerman; Ihab R Kamel Journal: Radiographics Date: 2014-10 Impact factor: 5.333
Authors: Davis M Vigneault; Anneline S J M te Riele; Cynthia A James; Stefan L Zimmerman; Mariana Selwaness; Brittney Murray; Crystal Tichnell; Michael Tee; J Alison Noble; Hugh Calkins; Harikrishna Tandri; David A Bluemke Journal: J Magn Reson Imaging Date: 2015-10-26 Impact factor: 4.813