Three-dimensional reconstruction of magnetic resonance images of the anal sphincter and correlation between sphincter volume and pressure

2003 ◽  
Vol 189 (1) ◽  
pp. 130-135 ◽  
Author(s):  
Jeffrey L. Cornella ◽  
Michael Hibner ◽  
Dee E. Fenner ◽  
J.Scott Kriegshauser ◽  
Joseph Hentz ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Anal Sphincter ◽  
Three Dimensional ◽  
Magnetic Resonance Images ◽  
Three Dimensional Reconstruction ◽  
Dimensional Reconstruction

New method of studying joint kinematics from three-dimensional reconstructions of MRI data

1996 ◽  
Vol 86 (1) ◽  
pp. 4-15 ◽  
Author(s):  
BE Hirsch ◽  
JK Udupa ◽  
S Samarasekera
Keyword(s):  
Magnetic Resonance ◽  
Range Of Motion ◽  
Three Dimensional ◽  
Magnetic Resonance Images ◽  
Joint Kinematics ◽  
New Method ◽  
Three Dimensional Reconstruction ◽  
Kinematic Parameters ◽  
Dimensional Reconstruction ◽  
Kinematic Information

A new method of measuring the kinematic parameters of joints has been developed. This article describes the procedure, using tarsal joints as examples. The method uses the technique of computerized three-dimensional reconstruction from magnetic resonance images, taken at regular intervals throughout a foot's range of motion. From these reconstructions, various kinematic information, such as orientation of instantaneous axes, amounts of rotation, amounts and direction of translation, and bony contact areas, is derived. The method is noninvasive and can be applied to individual subjects or patients.

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