Returns the first item in the IOD Structure.
iod
An item in the IOD Structure.
tree
true to evaluate the IOD Structure as a tree, false to evaluate the IOD Structure as a list.
a DicomIod class that contains the first item in the IOD Structure.
If the IOD Structure is evaluated as a tree structure, this method returns the first item on the same level as iod with the same parent as iod. Please note that the numbering of the items in this first illustration is arbitrary and does not imply order.
If the passed class is : | The method returns: |
Item 1 | Item 2 |
Item 3 | Item 4 |
Item 5 | Item 5 |
Item 6 | Item 7 |
null | item 2 |
If the IOD Structure is evaluated as a list, the first item in the list is returned. Please note that the numbering of the items in this illustration does indicate the order of the items when the IOD Structure is evaluated as a list.
If the passed class is : | The method returns: |
null | Item 1 |
Item 12 | Item 1 |
Item 14 | Item 1 |
Item 22 | Item 1 |
Item 25 | item 1 |
The following methods will also help you navigate the IOD Structure as either a tree or a list:
If you evaluate the IOD Structure as a tree, you can also use the following method to navigate the tree:
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