Nikhil Jha1,
2, Chun Schiros3, Nouha Salibi4, Himanshu Gupta3,
Steven Lloyd3, Louis J. Dell'Italia5, Thomas Stewart
Denney1, 2
1AU
MRI Research Center, Auburn University, Auburn, AL, United States; 2Electrical
and Computer Engineering, Auburn University, Auburn, AL, United States; 3Division
of Cardiology, University of Alabama Birmingham, Birmingham, AL, United
States; 4MR R&D, Siemens Healthcare, Malvern, PA, United
States; 5Division of Cardiology, University of Alabama at
Birmingham, Birmingham, AL, United States
Quantification of left atrial (LA) volumes throughout the cardiac cycle is important to assess atrio-ventricular coupling. The area-length method is based on areas and lengths of the atrium in four chamber and two chamber views, but does not account for differences in LA shape. The serial short-axis method is more accurate, but requires acquisition of additional short-axis slices. We present and validate a new method for computing LA volumes from standard four and two chamber views, which computes virtual short-axis LA contours based on four and two chamber contours and sums the virtual slice volumes to compute a total volume.