findscu [options] peer port [dcmfile-in...]
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.
peer hostname of DICOM peer port tcp/ip port number of peer dcmfile-in DICOM query file(s)
-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
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
-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 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 [c]ertificate filename: string
add certificate file to list of certificates
+cd --add-cert-dir [c]ertificate directory: string
add certificates in d to list of certificates
security profile:
+px --profile-bcp195
BCP 195 TLS Profile (default)
+py --profile-bcp195-nd
Non-downgrading 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
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
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').
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).
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.
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.
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).
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.
<datadir>/dcm2xml.dtd - Document Type Definition (DTD) file
movescu(1), dump2dcm(1), dcmodify(1)
Copyright (C) 1994-2018 by OFFIS e.V., Escherweg 2, 26121 Oldenburg, Germany.