$dcmtk: dcmconv v3.7.1 2026-10-15 $ dcmconv: Convert DICOM file encoding usage: dcmconv [options] dcmfile-in dcmfile-out parameters: dcmfile-in DICOM input filename to be converted ("-" for stdin) dcmfile-out DICOM output filename ("-" for stdout) 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 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 handling of illegal undefined length OB/OW elements: -oi --illegal-obow-rej reject dataset with illegal element (default) +oi --illegal-obow-conv convert undefined length OB/OW element to SQ handling of VOI LUT Sequence with OW VR and explicit length: -vi --illegal-voi-rej reject dataset with illegal VOI LUT (default) +vi --illegal-voi-conv convert illegal VOI LUT to SQ handling of explicit length pixel data for encaps. transfer syntaxes: -pe --abort-expl-pixdata abort on explicit length pixel data (default) +pe --use-expl-pixdata use explicit length pixel data 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 +L1 --convert-to-latin1 convert affected element values to ISO 8859-1 +A7 --convert-to-ascii convert affected element values to 7-bit ASCII +C --convert-to-charset [c]harset: string convert affected element values to the character set specified by the DICOM defined term c -Ct --transliterate try to approximate characters that cannot be represented through similar looking characters -Cd --discard-illegal discard characters that cannot be represented in destination character set other processing options: -ig --no-invalid-groups remove elements with invalid group number output options: output file format: +Fm --write-new-meta-info write file format with new meta information (default) +F --write-file write file format -F --write-dataset write data set without file meta information output transfer syntax: +t= --write-xfer-same write with same TS as input (default) +te --write-xfer-little write with explicit VR little endian TS +tb --write-xfer-big write with explicit VR big endian TS +ti --write-xfer-implicit write with implicit VR little endian TS +td --write-xfer-deflated write with deflated explicit VR little endian TS +tg --write-xfer-ge write private GE LEI with big endian pixel TS (non-standard) 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 group length encoding: +g= --group-length-recalc recalculate group lengths if present (default) +g --group-length-create always write with group length elements -g --group-length-remove always write without group length elements length encoding in sequences and items: +e --length-explicit write with explicit lengths (default) -e --length-undefined write with undefined lengths +eo --write-oversized write oversized explicit length sequences and items with undefined length (default) -eo --abort-oversized abort on oversized explicit sequences/items data set trailing padding (not with --write-dataset): -p= --padding-retain do not change padding (default if not --write-dataset) -p --padding-off no padding (implicit if --write-dataset) +p --padding-create [f]ile-pad [i]tem-pad: integer align file on multiple of f bytes and items on multiple of i bytes deflate compression level (only with --write-xfer-deflated): +cl --compression-level [l]evel: integer (default: 6) 0=uncompressed, 1=fastest, 9=best compression