findscu(1) OFFIS DCMTK findscu(1)
NAME
findscu - DICOM query (C-FIND) SCU
SYNOPSIS
findscu [options] peer port [dcmfile-in...]
DESCRIPTION
The findscu application implements an SCU for the Query/Retrieve
Service Class and the Basic Worklist Management Service Class. findscu
only supports query functionality using the C-FIND message. It sends
query keys to an SCP and awaits responses. The application can be used
to test SCPs of the Query/Retrieve and Basic Worklist Management
Service Classes.
PARAMETERS
peer hostname of DICOM peer
port tcp/ip port number of peer
dcmfile-in DICOM query file(s)
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
network options
override matching keys:
-k --key [k]ey: gggg,eeee="str", path or dictionary name="str"
override matching key
query information model:
-W --worklist
use modality worklist information model (default)
-P --patient
use patient root information model
-S --study
use study root information model
-O --psonly
use patient/study only information model
application entity titles:
-aet --aetitle [a]etitle: string
set my calling AE title (default: FINDSCU)
-aec --call [a]etitle: string
set called AE title of peer (default: ANY-SCP)
post-1993 value representations:
+u --enable-new-vr
enable support for new VRs (UN/UT) (default)
-u --disable-new-vr
disable support for new VRs, convert to OB
proposed transmission transfer syntaxes:
-x= --propose-uncompr
propose all uncompressed TS, explicit VR
with local byte ordering first (default)
-xe --propose-little
propose all uncompressed TS, explicit VR
little endian first
-xb --propose-big
propose all uncompressed TS, explicit VR
big endian first
-xd --propose-deflated
propose deflated explicit VR little endian TS
and all uncompressed transfer syntaxes
-xi --propose-implicit
propose implicit VR little endian TS only
deflate compression level (only with --propose-deflated):
+cl --compression-level [l]evel: integer (default: 6)
0=uncompressed, 1=fastest, 9=best compression
other network options:
-to --timeout [s]econds: integer (default: unlimited)
timeout for connection requests
-ts --socket-timeout [s]econds: integer (default: 60)
timeout for network socket (0 for none)
-ta --acse-timeout [s]econds: integer (default: 30)
timeout for ACSE messages
-td --dimse-timeout [s]econds: integer (default: unlimited)
timeout for DIMSE messages
-pdu --max-pdu [n]umber of bytes: integer (4096..131072)
set max receive pdu to n bytes (default: 16384)
--repeat [n]umber: integer
repeat n times
--abort
abort association instead of releasing it
--cancel [n]umber: integer
cancel after n responses (default: never)
transport layer security (TLS) options
transport protocol stack:
-tls --disable-tls
use normal TCP/IP connection (default)
+tls --enable-tls [p]rivate key file, [c]ertificate file: string
use authenticated secure TLS connection
+tla --anonymous-tls
use secure TLS connection without certificate
private key password (only with --enable-tls):
+ps --std-passwd
prompt user to type password on stdin (default)
+pw --use-passwd [p]assword: string
use specified password
-pw --null-passwd
use empty string as password
key and certificate file format:
-pem --pem-keys
read keys and certificates as PEM file (default)
-der --der-keys
read keys and certificates as DER file
certification authority:
+cf --add-cert-file [f]ilename: string
add certificate file to list of certificates
+cd --add-cert-dir [d]irectory: string
add certificates in d to list of certificates
+crl --add-crl-file [f]ilename: string
add certificate revocation list file
(implies --enable-crl-vfy)
+crv --enable-crl-vfy
enable leaf CRL verification
+cra --enable-crl-all
enable full chain CRL verification
security profile:
+py --profile-bcp195-nd
Non-downgrading BCP 195 TLS Profile (default)
+px --profile-bcp195
BCP 195 TLS Profile
+pz --profile-bcp195-ex
Extended BCP 195 TLS Profile
+pb --profile-basic
Basic TLS Secure Transport Connection Profile (retired)
+pa --profile-aes
AES TLS Secure Transport Connection Profile (retired)
+pn --profile-null
Authenticated unencrypted communication
(retired, was used in IHE ATNA)
ciphersuite:
+cc --list-ciphers
show list of supported TLS ciphersuites and exit
+cs --cipher [c]iphersuite name: string
add ciphersuite to list of negotiated suites
pseudo random generator:
+rs --seed [f]ilename: string
seed random generator with contents of f
+ws --write-seed
write back modified seed (only with --seed)
+wf --write-seed-file [f]ilename: string (only with --seed)
write modified seed to file f
peer authentication:
-rc --require-peer-cert
verify peer certificate, fail if absent (default)
-ic --ignore-peer-cert
don't verify peer certificate
output options
general:
-od --output-directory [d]irectory: string (default: ".")
write output files to existing directory d
automatic data correction:
+dc --enable-correction
enable automatic data correction
-dc --disable-correction
disable automatic data correction (default)
C-FIND responses:
+sr --show-responses
always output responses to the logger
-sr --hide-responses
do not output responses to the logger
-X --extract
extract responses to DICOM file (rsp0001.dcm...)
-Xx --extract-xml
extract responses to XML file (rsp0001.xml...)
-Xs --extract-xml-single [f]ilename: string
extract all responses to given XML file f
-Xlo --limit-output [n]umber: integer
limit number of responses extracted to file to n
(default: unlimited)
NOTES
Each file supplied on the command line will be sent to the SCP as part
of a C-FIND request. The query file must be a valid DICOM data set
containing the dataset part of a C-FIND-RQ message. The query file
could, for instance, be created with the dump2dcm utility from a script
like the following example:
# query patient names and IDs
(0008,0052) CS [PATIENT] # QueryRetrieveLevel
(0010,0010) PN [] # PatientName
(0010,0020) LO [] # PatientID
Individual attributes of each file sent can be modified or supplemented
using the -k option. For example the command:
findscu -P -k "(0010,0010)=HEWETT*" caesar 5678 patqry.dcm
will, when sent to the SCP caesar at TCP/IP port 5678, cause any
PatientName attribute in patqry.dcm to have the value 'HEWETT*'. If
such an attribute is present it will be replaced, if absent it will be
inserted. The -k option can be present more than once. The value part
(after the '=') may be absent causing the attribute to be sent with
zero length.
In earlier versions of findscu, the tag keys were specified without
braces around group and element number, e. g. '0010,0010' instead of
'(0010,0010)'. It is recommended switching to the new syntax; however,
the old syntax is still working.
Also -k accepts dictionary names instead of element tags for specifying
DICOM elements. For example, the findscu call above then reads like
this:
findscu -P -k PatientName="HEWETT*" caesar 5678 patqry.dcm
It is also possible to specify sequences, items and nested attributes
using the -k option. In these cases, a special 'path' notation has to
be used, e. g.
findscu -W -k "(0040,0100)[0].Modality=CT" caesar 5678
This call queries a worklist server at host caesar for any planned
procedures for CT modalities by specifying tag (0040,0100) 'Scheduled
Procedure Step Sequence' and an attribute 'Modality' in the first item
of this sequence with value 'CT'. Details on this path notation can be
found in the documentation of dcmodify.
If no file is specified on the command line, the query must be
specified completely with one or more -k options. If multiple query
files are provided, findscu will send multiple C-FIND requests to the
SCP.
Each set of response identifiers received will be output to the logger
unless option --hide-responses, any of the below --extract variants,
--quiet or an appropriate logger configuration is used. In such cases,
the output to the logger can be enforced with option --show-responses.
In addition, the response datasets can also be extracted as individual
DICOM files (using option --extract) or XML files (using option
--extract-xml). The output format of the latter is described by the
file dcm2xml.dtd (starting with top-level element 'data-set'). For XML
files, the Specific Character Set is mapped automatically to an
appropriate XML encoding. If this is not possible, e.g. in case of ISO
2022 character sets, non-ASCII characters and those below #32 are
stored as '&#nnn;' where 'nnn' refers to the numeric character code.
Please note that this might lead to invalid character entity references
(such as '' for ESC) and will cause most XML parsers to reject the
document.
Alternatively, all response datasets of an association can be extracted
to a single XML file using option --extract-xml-single. The top-level
element of the XML document is 'responses' (with a 'type' attribute of
'C-FIND'). The individual datasets are stored as described above. If
support for character set conversion is enabled, UTF-8 encoding is
used, i.e. all datasets are converted to UTF-8 encoding (which is
strongly recommended in order to avoid issues with non-ASCII characters
when different character sets are used).
DICOM Conformance
The findscu application supports the following SOP Classes as an SCU:
FINDPatientRootQueryRetrieveInformationModel 1.2.840.10008.5.1.4.1.2.1.1
FINDStudyRootQueryRetrieveInformationModel 1.2.840.10008.5.1.4.1.2.2.1
FINDPatientStudyOnlyQueryRetrieveInformationModel 1.2.840.10008.5.1.4.1.2.3.1
FINDModalityWorklistInformationModel 1.2.840.10008.5.1.4.31
The findscu application will propose presentation contexts for one of
the abovementioned supported SOP Classes depending on command line
options (-P, -S, -O or -W). Basically, the following transfer syntaxes
are supported:
LittleEndianImplicitTransferSyntax 1.2.840.10008.1.2
LittleEndianExplicitTransferSyntax 1.2.840.10008.1.2.1
DeflatedExplicitVRLittleEndianTransferSyntax 1.2.840.10008.1.2.1.99 (*)
BigEndianExplicitTransferSyntax 1.2.840.10008.1.2.2
(*) if compiled with zlib support enabled (see --version output)
Which transfer syntaxes are actually proposed in what order, can be
specified with the --propose options.
The findscu application does not support extended negotiation.
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 findscu 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.
FILES
<datadir>/dcm2xml.dtd - Document Type Definition (DTD) file
SEE ALSO
movescu(1), dump2dcm(1), dcmodify(1)
COPYRIGHT
Copyright (C) 1994-2022 by OFFIS e.V., Escherweg 2, 26121 Oldenburg,
Germany.
Version 3.6.7 Fri Apr 22 2022 findscu(1)