Mercurial > hg > orthanc

annotate Core/DicomNetworking/DicomFindAnswers.cpp @ 4007:884b55ce01f6

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Private tags returned by C-FIND SCP
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 06 Jun 2020 14:50:21 +0200
parents 2a170a8f1faf
children cc6ed76bba27
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU General Public License as
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9 * published by the Free Software Foundation, either version 3 of the
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10 * License, or (at your option) any later version.
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11 *
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12 * In addition, as a special exception, the copyright holders of this
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13 * program give permission to link the code of its release with the
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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15 * that use the same license as the "OpenSSL" library), and distribute
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16 * the linked executables. You must obey the GNU General Public License
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17 * in all respects for all of the code used other than "OpenSSL". If you
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18 * modify file(s) with this exception, you may extend this exception to
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19 * your version of the file(s), but you are not obligated to do so. If
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20 * you do not wish to do so, delete this exception statement from your
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21 * version. If you delete this exception statement from all source files
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22 * in the program, then also delete it here.
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23 *
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24 * This program is distributed in the hope that it will be useful, but
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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27 * General Public License for more details.
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28 *
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29 * You should have received a copy of the GNU General Public License
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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31 **/
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33
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34 #include "../PrecompiledHeaders.h"
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35 #include "DicomFindAnswers.h"
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37 #include "../DicomParsing/FromDcmtkBridge.h"
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38 #include "../OrthancException.h"
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40 #include <memory>
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41 #include <dcmtk/dcmdata/dcfilefo.h>
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42 #include <boost/noncopyable.hpp>
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43
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44
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45 namespace Orthanc
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46 {
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47 void DicomFindAnswers::AddAnswerInternal(ParsedDicomFile* answer)
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48 {
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49 std::unique_ptr<ParsedDicomFile> protection(answer);
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50
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51 if (isWorklist_)
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52 {
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53 // These lines are necessary when serving worklists, otherwise
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54 // Orthanc does not behave as "wlmscpfs"
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55 protection->Remove(DICOM_TAG_MEDIA_STORAGE_SOP_INSTANCE_UID);
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56 protection->Remove(DICOM_TAG_SOP_INSTANCE_UID);
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57 }
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58
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59 protection->ChangeEncoding(encoding_);
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61 answers_.push_back(protection.release());
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62 }
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65 DicomFindAnswers::DicomFindAnswers(bool isWorklist) :
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66 encoding_(GetDefaultDicomEncoding()),
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67 isWorklist_(isWorklist),
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68 complete_(true)
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69 {
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70 }
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73 void DicomFindAnswers::SetEncoding(Encoding encoding)
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74 {
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75 for (size_t i = 0; i < answers_.size(); i++)
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76 {
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77 assert(answers_[i] != NULL);
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78 answers_[i]->ChangeEncoding(encoding);
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79 }
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80
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81 encoding_ = encoding;
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82 }
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83
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84
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85 void DicomFindAnswers::SetWorklist(bool isWorklist)
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86 {
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87 if (answers_.empty())
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88 {
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89 isWorklist_ = isWorklist;
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90 }
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91 else
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92 {
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93 // This set of answers is not empty anymore, cannot change its type
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94 throw OrthancException(ErrorCode_BadSequenceOfCalls);
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95 }
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96 }
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98
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99 void DicomFindAnswers::Clear()
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100 {
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101 for (size_t i = 0; i < answers_.size(); i++)
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102 {
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103 assert(answers_[i] != NULL);
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104 delete answers_[i];
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105 }
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106
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107 answers_.clear();
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108 }
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109
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110
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111 void DicomFindAnswers::Reserve(size_t size)
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112 {
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113 if (size > answers_.size())
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114 {
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115 answers_.reserve(size);
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116 }
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117 }
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118
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119
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120 void DicomFindAnswers::Add(const DicomMap& map)
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121 {
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122 // We use the permissive mode to be tolerant wrt. invalid DICOM
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123 // files that contain some tags with out-of-range values (such
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124 // tags are removed from the answers)
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125 AddAnswerInternal(new ParsedDicomFile(map, encoding_, true /* permissive */,
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126 "" /* no private creator */));
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127 }
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128
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129
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130 void DicomFindAnswers::Add(ParsedDicomFile& dicom)
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131 {
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132 AddAnswerInternal(dicom.Clone(true));
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133 }
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134
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135 void DicomFindAnswers::Add(const void* dicom,
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136 size_t size)
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137 {
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138 AddAnswerInternal(new ParsedDicomFile(dicom, size));
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139 }
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140
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141
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142 ParsedDicomFile& DicomFindAnswers::GetAnswer(size_t index) const
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143 {
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144 if (index < answers_.size())
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145 {
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146 return *answers_[index];
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147 }
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148 else
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149 {
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150 throw OrthancException(ErrorCode_ParameterOutOfRange);
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151 }
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152 }
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153
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154
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155 DcmDataset* DicomFindAnswers::ExtractDcmDataset(size_t index) const
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156 {
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157 // As "DicomFindAnswers" stores its content using class
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158 // "ParsedDicomFile" (that internally uses "DcmFileFormat" from
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159 // DCMTK), the dataset can contain tags that are reserved if
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160 // storing the media on the disk, notably tag
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161 // "MediaStorageSOPClassUID" (0002,0002). In this function, we
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162 // remove all those tags whose group is below 0x0008. The
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163 // resulting data set is clean for emission in the C-FIND SCP.
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164
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165 // http://dicom.nema.org/medical/dicom/current/output/chtml/part04/sect_C.4.html#sect_C.4.1.1.3
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166 // https://groups.google.com/d/msg/orthanc-users/D3kpPuX8yV0/_zgHOzkMEQAJ
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167
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168 DcmDataset& source = *GetAnswer(index).GetDcmtkObject().getDataset();
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169
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170 std::unique_ptr<DcmDataset> target(new DcmDataset);
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171
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172 for (unsigned long i = 0; i < source.card(); i++)
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173 {
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174 const DcmElement* element = source.getElement(i);
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175 assert(element != NULL);
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176
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177 if (element != NULL &&
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178 element->getTag().getGroup() >= 0x0008 &&
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179 element->getTag().getElement() != 0x0000)
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180 {
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181 target->insert(dynamic_cast<DcmElement*>(element->clone()));
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182 }
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183 }
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184
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185 return target.release();
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186 }
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187
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188
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189 void DicomFindAnswers::ToJson(Json::Value& target,
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190 size_t index,
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191 bool simplify) const
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192 {
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193 DicomToJsonFormat format = (simplify ? DicomToJsonFormat_Human : DicomToJsonFormat_Full);
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194 GetAnswer(index).DatasetToJson(target, format, DicomToJsonFlags_None, 0);
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195 }
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196
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197
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198 void DicomFindAnswers::ToJson(Json::Value& target,
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199 bool simplify) const
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200 {
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201 target = Json::arrayValue;
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202
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203 for (size_t i = 0; i < GetSize(); i++)
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204 {
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205 Json::Value answer;
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206 ToJson(answer, i, simplify);
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207 target.append(answer);
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208 }
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209 }
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210 }