4D Integrated Treatment Console 7 - Varian

Privatization and Extensions
RT Treatment
Summary Record
Last Treated Fraction
(3265,1001)
The index of the last
fraction treated across
the current plan and all
its former plans. In
other words: This tag
will always contain the
fraction, which was last
treated (completely or
partially). So it will be
the same as in the
Fraction Status
Summary Sequence
(3008,0240) on the last
item of the sequence in
the tag Referenced
Fraction Number
(3008,0223), as soon
as the sequence is not
empty any more (so
after the 1st treatment
has got at least 1 MU).
In case of completing a partial
treatment, the plan’s current fraction
number is equal to Last Treated
Fraction (3265, 1001).
Table 9: RT Treatment Summary Record IOD privatization
4.2 Extensions
1C SL
This chapter describes the items not available through standard DICOM. The Extended
Interface for RT Plan is supported through an additional module that gets added to the RT
Plan IOD (see a4.1.1). The Extended Interface for RT Beams Record is supported through a
private attribute in the Treatment Session Beam (see 4.1.2).
It should be noted that 4DC was designed to work without the extended interface. Therefore
the following rules apply:
� 4DC shall not rely on the extended interface for the base functionality. It is possible
to operate without RT Plan Extended interface and Treatment Session Extended
Interface.
� Under no circumstances should data be presented in both Extended Interfaces and
the standard DICOM definition.
22 of 36 4DC v7, DICOM Conformance Statement, P/N 100016768-03