Cardiac chamber volume computation from contours and base plane in cardiac MR Cine images

A system to calculate a volume of a cardiac chamber from a plurality of slices of image data, comprising:

• a memory enabled to store instructions and data;
• a processor enabled to execute instructions to perform the steps:
• receiving a plurality of short axis images and a plurality of long axis images of the cardiac chamber;
• determining a base plane from a landmark in a long axis image of the cardiac chamber;
• determining an intersection between the base plane and the short axis images;
• determining a contour in a first slice of the cardiac chamber in a short axis image determined by a segmentation of the cardiac chamber and the intersection;
• calculating a volume related to the contour in the first slice, wherein the volume related to the contour in the first slice is a first partial contribution to the volume of the cardiac chamber;
• and
• calculating a volume related to a contour in a second slice of the cardiac chamber in a short axis image determined by a segmentation of the cardiac chamber which does not intersect with the base plane.

A system to calculate a volume of a cardiac chamber from a plurality of slices of image data, comprising:

• a memory enabled to store instructions and data;
• a processor enabled to execute instructions to perform the steps:
• receiving a plurality of short axis images and a plurality of long axis images of the cardiac chamber;
• determining a base plane from a landmark in a long axis image of the cardiac chamber;
• determining an intersection between the base plane and the short axis images;
• determining a contour in a first slice of the cardiac chamber in a short axis image determined by a segmentation of the cardiac chamber and the intersection;
• and
• calculating a volume related to the contour in the first slice;
• wherein the volume is determined by an expression
• V
• act
• =
• I
• base
• ⁡
• (
• T
• base
• 2
• +
• 
• P
• base
• +
• 1
• -
• P
• base
• 
• 2
• )
• +
• I
• apex
• ⁡
• (
• T
• apex
• 2
• +
• 
• P
• apex
• -
• P
• apex
• -
• 1
• 
• 2
• )
• +
• ∑
• i
• =
• base
• i
• =
• apex
• ⁢
• I
• i
• 1
• ⁢
• -
• 1
• ⁢
• +
• ⁡
• (
• 
• P
• i
• +
• 1
• -
• P
• i
• 
• 2
• +
• 
• P
• i
• -
• P
• i
• -
• 1
• 
• 2
• )
• -
• UP
• bp
• ,
• wherein:
• Vact is the volume of the cardiac chamber;
• I is an area of a contour in a slice;
• P is a 3D position of a slice;
• T is a thickness of a slice;
• base is an index for a basal slice of the cardiac chamber;
• apex is an index of an apical slice of the cardiac chamber;
• and
• UPbp is a cut-off volume that is cut-off from a segmentation of the cardiac chamber by the base plane.