1DCM2NIIX(1) dcm2niix DCM2NIIX(1)
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6 dcm2niix - DICOM to NifTI converter
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9 dcm2niix [options] <sourcedir>
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12 Most medical imaging devices save images in some variation of the popu‐
13 lar DICOM format. However, most scientific tools expect medical images
14 to be stored in the comparatively simpler NIfTI format. dcm2niix is de‐
15 signed to perform such conversion from DICOM to NIfTI with a simple
16 command-line interface.
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18 Please be advised that dcm2niix has been developed for research pur‐
19 poses only and should not be considered a clinical tool.
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22 -1..-9 gz compression level (1=fastest..9=smallest, default 6)
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24 -b <y/i/n>
25 Save additional BIDS metadata to a side-car .json file (default
26 y). The "i"nput-only option reads DICOMs but saves neither BIDS
27 nor NIfTI.
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29 -ba <y/n> anonymize BIDS (default y).
30 If "n"o, side-car may report patient name, age and weight.
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32 -f <format>
33 Format string for the output filename(s). The following speci‐
34 fiers are supported:
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36 • %a, antenna (coil) name
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38 • %b, basename (filename of 1st DICOM file)
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40 • %c, comments
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42 • %d, description
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44 • %e, echo number
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46 • %f, folder name
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48 • %i, patient ID
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50 • %j, series instance UID
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52 • %k, study instance UID
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54 • %m, manufacturer
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56 • %n, patient name
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58 • %o, media object instance UID
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60 • %p, protocol
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62 • %r, instance number (of 1st DICOM file)
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64 • %s, series number
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66 • %t, time
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68 • %u, acquisition number
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70 • %v, vendor
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72 • %x, study ID
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74 • %z, sequence name
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76 The default format string is "%p_%e_%4s".
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78 -g <y/n/o/i>
79 Generate defaults file (default n) If "y", create default file
80 on completion If "n", default will not be written If "o", only
81 reset and write defaults If "i", the values of the defaults file
82 are ignored : reset defaults], default n)
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84 -h Show help
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86 -i <y/n>
87 Ignore derived, localizer and 2D images (default n)
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89 -l <y/n/o>
90 Losslessly scale 16-bit integers to use maximal dynamic range
91 (default o). If "y", then intensity rescaled to use full 16-bit
92 range. If "n", data not scaled uint16 will be saved as int16.
93 If "o", original data and datatype preserved.
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95 -m <y/n/2>
96 Merge slices from the same series regardless of study time,
97 echo, coil, orientation, etc. (default 2). If "2", automatic
98 based on image modality.
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100 -n <number>
101 Only convert this series CRC number. Provide a negative number
102 for listing of series CRC numbers in input folder.
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104 -o <path>
105 Output directory where the converted files should be saved. If
106 unspecified, the files are saved within the specified source di‐
107 rectory.
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109 -p <y/n>
110 Use Philips precise float (rather than display) scaling.
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112 -r <y/n>
113 Rename instead of convert DICOMs. Useful for organizing images.
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115 -s <y/n>
116 Convert a single file only.
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118 -t <y/n>
119 Save patient details as text notes.
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121 -u Update check: attempts to see if newer version is available.
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123 -v <2/y/n>
124 Enable verbose output. "n" for succinct, "y" for verbose, "2"
125 for high verbosity
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127 -x <y/n/i>
128 Crop images. This will attempt to remove excess neck from 3D ac‐
129 quisitions. If "i", images are neither cropped nor rotated to
130 canonical space.
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132 -z <y/i/n>
133 Desired compression method. The "y"es option uses the external
134 program pigz if available. The "i" option compresses the image
135 using the slower built-in compression routines.
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137 --big-endian <y/n/o>
138 Byte order (default o). Optimal is machine native
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140 --progress
141 Slicer format progress information (y/n, default n)
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143 --ignore_trigger_times
144 Disregard values in 0018,1060 and 0020,9153
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146 --terse
147 Omit filename post-fixes (can cause overwrites)
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149 --version
150 Report version and terminate
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152 --xml Slicer format features
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155 Copying and distribution of this file, with or without modification,
156 are permitted in any medium without royalty provided the copyright no‐
157 tice and this notice are preserved. This file is offered as-is, without
158 any warranty. The dcm2niix project is distributed under the BSD
159 2-Clause License.
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162 This manual was developed by Ghislain Antony Vaillant and is maintained
163 by the community
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166 2023 The dcm2niix contributors
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1711.0 Jan 19, 2023 DCM2NIIX(1)