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R8218/CT/private/dicomlookup_actions.m
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dicomlookup_actions.m
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function [value1, value2] = dicomlookup_actions(varargin)
%DICOMLOOKUP_ACTIONS Call dictionary lookup functions without checking.
%
% This function requires correct inputs. Use the public function
% DICOMLOOKUP for error checking.
% Copyright 2006-2010 The MathWorks, Inc.
if (nargin == 2)
% Look up the tag for a given attribute name.
tag = dicom_tag_lookup(varargin{1}, varargin{2});
if (~isempty(tag))
value1 = tag(1);
value2 = tag(2);
else
value1 = [];
value2 = [];
end
else
% Look up the name when given a group and an attribute.
group = varargin{1};
element = varargin{2};
dictionary = varargin{3};
% Look up the attribute.
attr = dicomlookup_helper(group, element, dictionary);
if (~isempty(attr))
% The attribute was in the dictionary; use its name.
name = attr.Name;
else
% Construct Private names if the group is odd.
if (rem(group, 2) == 1)
if (element == 0)
% (gggg,0000) is Private Group Length.
name = sprintf('Private_%04x_GroupLength', group);
elseif (element < 16)
% (gggg,0001-000f) are not allowed.
name = '';
elseif ((element >= 16) && (element <= 255))
% (gggg,0010-00ff) are Private Creator Data Elements.
% Private attributes are assigned in blocks of 256. The
% Private Creator Data Elements (gggg,0010-00ff) reserve a
% block. For example, (gggg,0030) reserves elements
% (gggg,3000-30ff).
name = sprintf('Private_%04x_%02xxx_Creator', group, element);
else
% The rest are normal private metadata.
name = sprintf('Private_%04x_%04x', group, element);
end
else
% The public attribute was not found.
name = '';
end
end
% Assign the output.
value1 = name;
value2 = [];
end
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