What's meaning of dicom-dict.txt file 4th column "1-n"?

We'd like to add some tags in the matlab dicom-dict.txt file, which doesn't contain any (0019, tags for example.

It seems quite straight forward. However, what does the 4th column mean, such as 1, 1-n, 2-n, 1-8, etc...?

Thanks.

= = =

#
# DICOM Data Dictionary
#
# Copyright 2000-2007 The MathWorks, Inc.
# 
#
# ------------------------------------------------------------------------
# Attributes can appear multiple times.  The last duplicate entry is the
# one which is used.
#
# Comment lines begin with "#".
#
# Items are tab-delimited.
# ------------------------------------------------------------------------
(0000,0000)	UL	GroupLength	1
... ...
(0000,0900)	US	Status	1
(0000,0901)	AT	OffendingElement	1-n
(0000,0902)	LO	ErrorComment	1
(0000,0903)	US	ErrorID	1
(0000,1000)	UI	AffectedSOPInstanceUID	1
(0000,1001)	UI	RequestedSOPInstanceUID	1
(0000,1002)	US	EventTypeID	1
(0000,1005)	AT	AttributeIdentifierList	1-n
(0000,1008)	US	ActionTypeID	1
... ...
(0000,51A0)	LT	Print	1
(0000,51B0)	US	Overlays	1-n
... ...
(0004,1130)	CS	FileSetID	1
(0004,1141)	CS	FileSetDescriptorFileID	1-8
(0004,1142)	CS	FileSetCharacterSet	1
... ...
(0004,1432)	UI	PrivateRecordUID	1
(0004,1500)	CS	ReferencedFileID	1-8
(0004,1504)	UL	MRDRDirectoryRecordOffset	1
(0004,1510)	UI	ReferencedSOPClassUIDInFile	1
(0004,1511)	UI	ReferencedSOPInstanceUIDInFile	1
(0004,1512)	UI	ReferencedTransferSyntaxUIDInFile	1
(0004,151A)	UI	ReferencedRelatedGeneralSOPClassUIDInFile	1-n
(0004,1600)	UL	NumberOfReferences	1
(0008,0000)	UL	IdentifyingGroupLength	1
(0008,0001)	UL	LengthToEnd	1
(0008,0005)	CS	SpecificCharacterSet	1-n
... ...
= = =

Answer 1

[Asvin Kumar]

The fourth column represents Value Multiplicity. Check the following link for more details about Value Multiplicity: http://dicom.nema.org/dicom/2013/output/chtml/part05/sect_6.4.html

You can find the exact VMs for different attributes under Chapter 6 in PS3.6: http://dicom.nema.org/dicom/2013/output/chtml/part06/chapter_6.html

Note: These links point to the 2013 version of these documents. The 2007 version of the dictionary, which MathWorks ships, isn’t all that different. You can find the same information on Page 33 at http://dicom.nema.org/dicom/2007/07_05pu.pdf