(0018,1600) 
Shutter Shape 
1

Shape(s) of the shutter defined for display. Enumerated Values: RECTANGULAR CIRCULAR POLYGONAL This multivalued Attribute shall contain at most one of each Enumerated Value. 
(0018,1602) 
Shutter Left Vertical Edge 
1C

Required if Shutter Shape (0018,1600) is RECTANGULAR. Location of the left edge of the rectangular shutter with respect to pixels in the image given as column. 
(0018,1604) 
Shutter Right Vertical Edge 
1C

Required if Shutter Shape (0018,1600) is RECTANGULAR. Location of the right edge of the rectangular shutter with respect to pixels in the image given as column. 
(0018,1606) 
Shutter Upper Horizontal Edge 
1C

Required if Shutter Shape (0018,1600) is RECTANGULAR. Location of the upper edge of the rectangular shutter with respect to pixels in the image given as row. 
(0018,1608) 
Shutter Lower Horizontal Edge 
1C

Required if Shutter Shape (0018,1600) is RECTANGULAR. Location of the lower edge of the rectangular shutter with respect to pixels in the image given as row. 
(0018,1610) 
Center of Circular Shutter 
1C

Required if Shutter Shape (0018,1600) is CIRCULAR. Location of the center of the circular shutter with respect to pixels in the image given as row and column. 
(0018,1612) 
Radius of Circular Shutter 
1C

Required if Shutter Shape (0018,1600) is CIRCULAR. Radius of the circular shutter with respect to pixels in the image given as a number of pixels along the row direction. 
(0018,1620) 
Vertices of the Polygonal Shutter 
1C

Required if Shutter Shape (0018,1600) is POLYGONAL. Multiple Values where the first set of two values are: row of the origin vertex column of the origin vertex Two or more pairs of values follow and are the row and column coordinates of the other vertices of the polygon shutter. Polygon shutters are implicitly closed from the last vertex to the origin vertex and all edges shall be nonintersecting except at the vertices. 
(0018,1622) 
Shutter Presentation Value 
3

The value used to replace those parts of the image occluded by the shutter, in PValues, from a minimum of 0000H (black) up to a maximum of FFFFH (white). Note: The maximum PValue for this Attribute may be different from the maximum PValue from the output of the Presentation LUT, which may be less than 16 bits in depth. 