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dcmdump - Online in the Cloud

Run dcmdump in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command dcmdump that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


dcmdump - Dump DICOM file and data set

SYNOPSIS


dcmdump [options] dcmfile-in...

DESCRIPTION


The dcmdump utility dumps the contents of a DICOM file (file format or raw data set) to
stdout in textual form. Attributes with very large value fields (e.g. pixel data) can be
described as '(not loaded)'. String value fields will be delimited with square brackets
([]). Known UIDs will be displayed by their names prefixed by an equals sign (e.g.
'=MRImageStorage') unless this mapping would be explicitly switched off. Empty value
fields are described as '(no value available)'.

If dcmdump reads a raw data set (DICOM data without a file format meta-header) it will
attempt to guess the transfer syntax by examining the first few bytes of the file. It is
not always possible to correctly guess the transfer syntax and it is better to convert a
data set to a file format whenever possible (using the dcmconv utility). It is also
possible to use the -f and -t[ieb] options to force dcmdump to read a dataset with a
particular transfer syntax.

PARAMETERS


dcmfile-in DICOM input file or directory to be dumped

OPTIONS


general options
-h --help
print this help text and exit

--version
print version information and exit

--arguments
print expanded command line arguments

-q --quiet
quiet mode, print no warnings and errors

-v --verbose
verbose mode, print processing details

-d --debug
debug mode, print debug information

-ll --log-level [l]evel: string constant
(fatal, error, warn, info, debug, trace)
use level l for the logger

-lc --log-config [f]ilename: string
use config file f for the logger

input options
input file format:

+f --read-file
read file format or data set (default)

+fo --read-file-only
read file format only

-f --read-dataset
read data set without file meta information

input transfer syntax:

-t= --read-xfer-auto
use TS recognition (default)

-td --read-xfer-detect
ignore TS specified in the file meta header

-te --read-xfer-little
read with explicit VR little endian TS

-tb --read-xfer-big
read with explicit VR big endian TS

-ti --read-xfer-implicit
read with implicit VR little endian TS

input files:

+sd --scan-directories
scan directories for input files (dcmfile-in)

+sp --scan-pattern [p]attern: string (only with --scan-directories)
pattern for filename matching (wildcards)

# possibly not available on all systems

-r --no-recurse
do not recurse within directories (default)

+r --recurse
recurse within specified directories

long tag values:

+M --load-all
load very long tag values (default)

-M --load-short
do not load very long values (e.g. pixel data)

+R --max-read-length [k]bytes: integer (4..4194302, default: 4)
set threshold for long values to k kbytes

parsing of file meta information:

+ml --use-meta-length
use file meta information group length (default)

-ml --ignore-meta-length
ignore file meta information group length

parsing of odd-length attributes:

+ao --accept-odd-length
accept odd length attributes (default)

+ae --assume-even-length
assume real length is one byte larger

handling of explicit VR:

+ev --use-explicit-vr
use explicit VR from dataset (default)

-ev --ignore-explicit-vr
ignore explicit VR (prefer data dictionary)

handling of non-standard VR:

+vr --treat-as-unknown
treat non-standard VR as unknown (default)

-vr --assume-implicit
try to read with implicit VR little endian TS

handling of undefined length UN elements:

+ui --enable-cp246
read undefined len UN as implicit VR (default)

-ui --disable-cp246
read undefined len UN as explicit VR

handling of defined length UN elements:

-uc --retain-un
retain elements as UN (default)

+uc --convert-un
convert to real VR if known

handling of private max-length elements (implicit VR):

-sq --maxlength-dict
read as defined in dictionary (default)

+sq --maxlength-seq
read as sequence with undefined length

handling of wrong delimitation items:

-rd --use-delim-items
use delimitation items from dataset (default)

+rd --replace-wrong-delim
replace wrong sequence/item delimitation items

general handling of parser errors:

+Ep --ignore-parse-errors
try to recover from parse errors

-Ep --handle-parse-errors
handle parse errors and stop parsing (default)

other parsing options:

+st --stop-after-elem [t]ag: "gggg,eeee" or dictionary name
stop parsing after element specified by t

automatic data correction:

+dc --enable-correction
enable automatic data correction (default)

-dc --disable-correction
disable automatic data correction

bitstream format of deflated input:

+bd --bitstream-deflated
expect deflated bitstream (default)

+bz --bitstream-zlib
expect deflated zlib bitstream

processing options
specific character set:

+U8 --convert-to-utf8
convert all element values that are affected
by Specific Character Set (0008,0005) to UTF-8

# requires support from the libiconv toolkit

output options
printing:

+L --print-all
print long tag values completely

-L --print-short
print long tag values shortened (default)

+T --print-tree
print hierarchical structure as a simple tree

-T --print-indented
print hierarchical structure indented (default)

+F --print-filename
print header with filename for each input file

+Fs --print-file-search
print header with filename only for those input files
that contain one of the searched tags

mapping:

+Un --map-uid-names
map well-known UID numbers to names (default)

-Un --no-uid-names
do not map well-known UID numbers to names

quoting:

+Qn --quote-nonascii
quote non-ASCII and control chars as XML markup

+Qo --quote-as-octal
quote non-ASCII and control chars as octal numbers

-Qn --print-nonascii
print non-ASCII and control chars (default)

color:

+C --print-color
use ANSI escape codes for colored output

# not available on Windows systems

-C --no-color
do not use any ANSI escape codes (default)

# not available on Windows systems

error handling:

-E --stop-on-error
do not print if file is damaged (default)

+E --ignore-errors
attempt to print even if file is damaged

searching:

+P --search [t]ag: "gggg,eeee" or dictionary name
print the textual dump of tag t
this option can be specified multiple times
(default: the complete file is printed)

+s --search-all
print all instances of searched tags (default)

-s --search-first
only print first instance of searched tags

+p --prepend
prepend sequence hierarchy to printed tag,
denoted by: (gggg,eeee).(gggg,eeee).*
(only when used with --search)

-p --no-prepend
do not prepend hierarchy to tag (default)

writing:

+W --write-pixel [d]irectory: string
write pixel data to a .raw file stored in d
(little endian, filename created automatically)

NOTES


Adding directories as a parameter to the command line only makes sense if option --scan-
directories is also given. If the files in the provided directories should be selected
according to a specific name pattern (e.g. using wildcard matching), option --scan-pattern
has to be used. Please note that this file pattern only applies to the files within the
scanned directories, and, if any other patterns are specified on the command line outside
the --scan-pattern option (e.g. in order to select further files), these do not apply to
the specified directories.

LOGGING


The level of logging output of the various command line tools and underlying libraries can
be specified by the user. By default, only errors and warnings are written to the standard
error stream. Using option --verbose also informational messages like processing details
are reported. Option --debug can be used to get more details on the internal activity,
e.g. for debugging purposes. Other logging levels can be selected using option --log-
level. In --quiet mode only fatal errors are reported. In such very severe error events,
the application will usually terminate. For more details on the different logging levels,
see documentation of module 'oflog'.

In case the logging output should be written to file (optionally with logfile rotation),
to syslog (Unix) or the event log (Windows) option --log-config can be used. This
configuration file also allows for directing only certain messages to a particular output
stream and for filtering certain messages based on the module or application where they
are generated. An example configuration file is provided in <etcdir>/logger.cfg.

COMMAND LINE


All command line tools use the following notation for parameters: square brackets enclose
optional values (0-1), three trailing dots indicate that multiple values are allowed
(1-n), a combination of both means 0 to n values.

Command line options are distinguished from parameters by a leading '+' or '-' sign,
respectively. Usually, order and position of command line options are arbitrary (i.e. they
can appear anywhere). However, if options are mutually exclusive the rightmost appearance
is used. This behavior conforms to the standard evaluation rules of common Unix shells.

In addition, one or more command files can be specified using an '@' sign as a prefix to
the filename (e.g. @command.txt). Such a command argument is replaced by the content of
the corresponding text file (multiple whitespaces are treated as a single separator unless
they appear between two quotation marks) prior to any further evaluation. Please note that
a command file cannot contain another command file. This simple but effective approach
allows one to summarize common combinations of options/parameters and avoids longish and
confusing command lines (an example is provided in file <datadir>/dumppat.txt).

ENVIRONMENT


The dcmdump utility will attempt to load DICOM data dictionaries specified in the
DCMDICTPATH environment variable. By default, i.e. if the DCMDICTPATH environment variable
is not set, the file <datadir>/dicom.dic will be loaded unless the dictionary is built
into the application (default for Windows).

The default behavior should be preferred and the DCMDICTPATH environment variable only
used when alternative data dictionaries are required. The DCMDICTPATH environment variable
has the same format as the Unix shell PATH variable in that a colon (':') separates
entries. On Windows systems, a semicolon (';') is used as a separator. The data dictionary
code will attempt to load each file specified in the DCMDICTPATH environment variable. It
is an error if no data dictionary can be loaded.

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