Mercurial > hg > orthanc-stone
annotate Framework/Loaders/OrthancSeriesVolumeProgressiveLoader.cpp @ 817:68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 29 May 2019 08:36:13 +0200 |
| parents | aead999345e0 |
| children | a68cd7ae8838 |
| rev | line source |
|---|---|
| 814 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * Copyright (C) 2017-2019 Osimis S.A., Belgium | |
| 6 * | |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "OrthancSeriesVolumeProgressiveLoader.h" | |
| 23 | |
| 24 #include "../Toolbox/GeometryToolbox.h" | |
| 25 #include "../Volumes/DicomVolumeImageMPRSlicer.h" | |
| 26 #include "BasicFetchingItemsSorter.h" | |
| 27 #include "BasicFetchingStrategy.h" | |
| 28 | |
| 29 #include <Core/Images/ImageProcessing.h> | |
| 30 #include <Core/OrthancException.h> | |
| 31 | |
| 32 namespace OrthancStone | |
| 33 { | |
| 34 class OrthancSeriesVolumeProgressiveLoader::ExtractedSlice : public DicomVolumeImageMPRSlicer::Slice | |
| 35 { | |
| 36 private: | |
| 37 const OrthancSeriesVolumeProgressiveLoader& that_; | |
| 38 | |
| 39 public: | |
| 40 ExtractedSlice(const OrthancSeriesVolumeProgressiveLoader& that, | |
| 41 const CoordinateSystem3D& plane) : | |
| 42 DicomVolumeImageMPRSlicer::Slice(*that.volume_, plane), | |
| 43 that_(that) | |
| 44 { | |
|
817
68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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45 if (GetProjection() == VolumeProjection_Axial) |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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46 { |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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47 // For coronal and sagittal projections, we take the global |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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48 // revision of the volume because even if a single slice changes, |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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49 // this means the projection will yield a different result --> |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
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50 // we must increase the revision as soon as any slice changes |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
|
51 SetRevision(that_.seriesGeometry_.GetSliceRevision(GetSliceIndex())); |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
|
52 } |
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68f888812af4
simplification of DicomVolumeImageMPRSlicer::ExtractedSlice
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
814
diff
changeset
|
53 |
| 814 | 54 if (that_.strategy_.get() != NULL && |
| 55 IsValid() && | |
| 56 GetProjection() == VolumeProjection_Axial) | |
| 57 { | |
| 58 that_.strategy_->SetCurrent(GetSliceIndex()); | |
| 59 } | |
| 60 } | |
| 61 }; | |
| 62 | |
| 63 | |
| 64 | |
| 65 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::CheckSlice(size_t index, | |
| 66 const DicomInstanceParameters& reference) const | |
| 67 { | |
| 68 const DicomInstanceParameters& slice = *slices_[index]; | |
| 69 | |
| 70 if (!GeometryToolbox::IsParallel( | |
| 71 reference.GetGeometry().GetNormal(), | |
| 72 slice.GetGeometry().GetNormal())) | |
| 73 { | |
| 74 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadGeometry, | |
| 75 "A slice in the volume image is not parallel to the others"); | |
| 76 } | |
| 77 | |
| 78 if (reference.GetExpectedPixelFormat() != slice.GetExpectedPixelFormat()) | |
| 79 { | |
| 80 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat, | |
| 81 "The pixel format changes across the slices of the volume image"); | |
| 82 } | |
| 83 | |
| 84 if (reference.GetImageInformation().GetWidth() != slice.GetImageInformation().GetWidth() || | |
| 85 reference.GetImageInformation().GetHeight() != slice.GetImageInformation().GetHeight()) | |
| 86 { | |
| 87 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageSize, | |
| 88 "The width/height of slices are not constant in the volume image"); | |
| 89 } | |
| 90 | |
| 91 if (!LinearAlgebra::IsNear(reference.GetPixelSpacingX(), slice.GetPixelSpacingX()) || | |
| 92 !LinearAlgebra::IsNear(reference.GetPixelSpacingY(), slice.GetPixelSpacingY())) | |
| 93 { | |
| 94 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadGeometry, | |
| 95 "The pixel spacing of the slices change across the volume image"); | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 | |
| 100 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::CheckVolume() const | |
| 101 { | |
| 102 for (size_t i = 0; i < slices_.size(); i++) | |
| 103 { | |
| 104 assert(slices_[i] != NULL); | |
| 105 if (slices_[i]->GetImageInformation().GetNumberOfFrames() != 1) | |
| 106 { | |
| 107 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadGeometry, | |
| 108 "This class does not support multi-frame images"); | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 if (slices_.size() != 0) | |
| 113 { | |
| 114 const DicomInstanceParameters& reference = *slices_[0]; | |
| 115 | |
| 116 for (size_t i = 1; i < slices_.size(); i++) | |
| 117 { | |
| 118 CheckSlice(i, reference); | |
| 119 } | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 | |
| 124 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::Clear() | |
| 125 { | |
| 126 for (size_t i = 0; i < slices_.size(); i++) | |
| 127 { | |
| 128 assert(slices_[i] != NULL); | |
| 129 delete slices_[i]; | |
| 130 } | |
| 131 | |
| 132 slices_.clear(); | |
| 133 slicesRevision_.clear(); | |
| 134 } | |
| 135 | |
| 136 | |
| 137 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::CheckSliceIndex(size_t index) const | |
| 138 { | |
| 139 if (!HasGeometry()) | |
| 140 { | |
| 141 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 142 } | |
| 143 else if (index >= slices_.size()) | |
| 144 { | |
| 145 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 146 } | |
| 147 else | |
| 148 { | |
| 149 assert(slices_.size() == GetImageGeometry().GetDepth() && | |
| 150 slices_.size() == slicesRevision_.size()); | |
| 151 } | |
| 152 } | |
| 153 | |
| 154 | |
| 155 // WARNING: The payload of "slices" must be of class "DicomInstanceParameters" | |
| 156 // (called with the slices created in LoadGeometry) | |
| 157 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::ComputeGeometry(SlicesSorter& slices) | |
| 158 { | |
| 159 Clear(); | |
| 160 | |
| 161 if (!slices.Sort()) | |
| 162 { | |
| 163 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange, | |
| 164 "Cannot sort the 3D slices of a DICOM series"); | |
| 165 } | |
| 166 | |
| 167 if (slices.GetSlicesCount() == 0) | |
| 168 { | |
| 169 geometry_.reset(new VolumeImageGeometry); | |
| 170 } | |
| 171 else | |
| 172 { | |
| 173 slices_.reserve(slices.GetSlicesCount()); | |
| 174 slicesRevision_.resize(slices.GetSlicesCount(), 0); | |
| 175 | |
| 176 for (size_t i = 0; i < slices.GetSlicesCount(); i++) | |
| 177 { | |
| 178 const DicomInstanceParameters& slice = | |
| 179 dynamic_cast<const DicomInstanceParameters&>(slices.GetSlicePayload(i)); | |
| 180 slices_.push_back(new DicomInstanceParameters(slice)); | |
| 181 } | |
| 182 | |
| 183 CheckVolume(); | |
| 184 | |
| 185 const double spacingZ = slices.ComputeSpacingBetweenSlices(); | |
| 186 LOG(INFO) << "Computed spacing between slices: " << spacingZ << "mm"; | |
| 187 | |
| 188 const DicomInstanceParameters& parameters = *slices_[0]; | |
| 189 | |
| 190 geometry_.reset(new VolumeImageGeometry); | |
| 191 geometry_->SetSize(parameters.GetImageInformation().GetWidth(), | |
| 192 parameters.GetImageInformation().GetHeight(), | |
| 193 static_cast<unsigned int>(slices.GetSlicesCount())); | |
| 194 geometry_->SetAxialGeometry(slices.GetSliceGeometry(0)); | |
| 195 geometry_->SetVoxelDimensions(parameters.GetPixelSpacingX(), | |
| 196 parameters.GetPixelSpacingY(), spacingZ); | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 | |
| 201 const VolumeImageGeometry& OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::GetImageGeometry() const | |
| 202 { | |
| 203 if (!HasGeometry()) | |
| 204 { | |
| 205 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 206 } | |
| 207 else | |
| 208 { | |
| 209 assert(slices_.size() == geometry_->GetDepth()); | |
| 210 return *geometry_; | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 | |
| 215 const DicomInstanceParameters& OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::GetSliceParameters(size_t index) const | |
| 216 { | |
| 217 CheckSliceIndex(index); | |
| 218 return *slices_[index]; | |
| 219 } | |
| 220 | |
| 221 | |
| 222 uint64_t OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::GetSliceRevision(size_t index) const | |
| 223 { | |
| 224 CheckSliceIndex(index); | |
| 225 return slicesRevision_[index]; | |
| 226 } | |
| 227 | |
| 228 | |
| 229 void OrthancSeriesVolumeProgressiveLoader::SeriesGeometry::IncrementSliceRevision(size_t index) | |
| 230 { | |
| 231 CheckSliceIndex(index); | |
| 232 slicesRevision_[index] ++; | |
| 233 } | |
| 234 | |
| 235 | |
| 236 static unsigned int GetSliceIndexPayload(const OracleCommandWithPayload& command) | |
| 237 { | |
| 238 return dynamic_cast< const Orthanc::SingleValueObject<unsigned int>& >(command.GetPayload()).GetValue(); | |
| 239 } | |
| 240 | |
| 241 | |
| 242 void OrthancSeriesVolumeProgressiveLoader::ScheduleNextSliceDownload() | |
| 243 { | |
| 244 assert(strategy_.get() != NULL); | |
| 245 | |
| 246 unsigned int sliceIndex, quality; | |
| 247 | |
| 248 if (strategy_->GetNext(sliceIndex, quality)) | |
| 249 { | |
| 250 assert(quality <= BEST_QUALITY); | |
| 251 | |
| 252 const DicomInstanceParameters& slice = seriesGeometry_.GetSliceParameters(sliceIndex); | |
| 253 | |
| 254 const std::string& instance = slice.GetOrthancInstanceIdentifier(); | |
| 255 if (instance.empty()) | |
| 256 { | |
| 257 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 258 } | |
| 259 | |
| 260 std::auto_ptr<OracleCommandWithPayload> command; | |
| 261 | |
| 262 if (quality == BEST_QUALITY) | |
| 263 { | |
| 264 std::auto_ptr<GetOrthancImageCommand> tmp(new GetOrthancImageCommand); | |
| 265 tmp->SetHttpHeader("Accept-Encoding", "gzip"); | |
| 266 tmp->SetHttpHeader("Accept", std::string(Orthanc::EnumerationToString(Orthanc::MimeType_Pam))); | |
| 267 tmp->SetInstanceUri(instance, slice.GetExpectedPixelFormat()); | |
| 268 tmp->SetExpectedPixelFormat(slice.GetExpectedPixelFormat()); | |
| 269 command.reset(tmp.release()); | |
| 270 } | |
| 271 else | |
| 272 { | |
| 273 std::auto_ptr<GetOrthancWebViewerJpegCommand> tmp(new GetOrthancWebViewerJpegCommand); | |
| 274 tmp->SetHttpHeader("Accept-Encoding", "gzip"); | |
| 275 tmp->SetInstance(instance); | |
| 276 tmp->SetQuality((quality == 0 ? 50 : 90)); | |
| 277 tmp->SetExpectedPixelFormat(slice.GetExpectedPixelFormat()); | |
| 278 command.reset(tmp.release()); | |
| 279 } | |
| 280 | |
| 281 command->SetPayload(new Orthanc::SingleValueObject<unsigned int>(sliceIndex)); | |
| 282 oracle_.Schedule(*this, command.release()); | |
| 283 } | |
| 284 } | |
| 285 | |
| 286 /** | |
| 287 This is called in response to GET "/series/XXXXXXXXXXXXX/instances-tags" | |
| 288 */ | |
| 289 void OrthancSeriesVolumeProgressiveLoader::LoadGeometry(const OrthancRestApiCommand::SuccessMessage& message) | |
| 290 { | |
| 291 Json::Value body; | |
| 292 message.ParseJsonBody(body); | |
| 293 | |
| 294 if (body.type() != Json::objectValue) | |
| 295 { | |
| 296 throw Orthanc::OrthancException(Orthanc::ErrorCode_NetworkProtocol); | |
| 297 } | |
| 298 | |
| 299 { | |
| 300 Json::Value::Members instances = body.getMemberNames(); | |
| 301 | |
| 302 SlicesSorter slices; | |
| 303 | |
| 304 for (size_t i = 0; i < instances.size(); i++) | |
| 305 { | |
| 306 Orthanc::DicomMap dicom; | |
| 307 dicom.FromDicomAsJson(body[instances[i]]); | |
| 308 | |
| 309 std::auto_ptr<DicomInstanceParameters> instance(new DicomInstanceParameters(dicom)); | |
| 310 instance->SetOrthancInstanceIdentifier(instances[i]); | |
| 311 | |
| 312 // the 3D plane corresponding to the slice | |
| 313 CoordinateSystem3D geometry = instance->GetGeometry(); | |
| 314 slices.AddSlice(geometry, instance.release()); | |
| 315 } | |
| 316 | |
| 317 seriesGeometry_.ComputeGeometry(slices); | |
| 318 } | |
| 319 | |
| 320 size_t slicesCount = seriesGeometry_.GetImageGeometry().GetDepth(); | |
| 321 | |
| 322 if (slicesCount == 0) | |
| 323 { | |
| 324 volume_->Initialize(seriesGeometry_.GetImageGeometry(), Orthanc::PixelFormat_Grayscale8); | |
| 325 } | |
| 326 else | |
| 327 { | |
| 328 const DicomInstanceParameters& parameters = seriesGeometry_.GetSliceParameters(0); | |
| 329 | |
| 330 volume_->Initialize(seriesGeometry_.GetImageGeometry(), parameters.GetExpectedPixelFormat()); | |
| 331 volume_->SetDicomParameters(parameters); | |
| 332 volume_->GetPixelData().Clear(); | |
| 333 | |
| 334 strategy_.reset(new BasicFetchingStrategy(sorter_->CreateSorter(static_cast<unsigned int>(slicesCount)), BEST_QUALITY)); | |
| 335 | |
| 336 assert(simultaneousDownloads_ != 0); | |
| 337 for (unsigned int i = 0; i < simultaneousDownloads_; i++) | |
| 338 { | |
| 339 ScheduleNextSliceDownload(); | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 slicesQuality_.resize(slicesCount, 0); | |
| 344 | |
| 345 BroadcastMessage(DicomVolumeImage::GeometryReadyMessage(*volume_)); | |
| 346 } | |
| 347 | |
| 348 | |
| 349 void OrthancSeriesVolumeProgressiveLoader::SetSliceContent(unsigned int sliceIndex, | |
| 350 const Orthanc::ImageAccessor& image, | |
| 351 unsigned int quality) | |
| 352 { | |
| 353 assert(sliceIndex < slicesQuality_.size() && | |
| 354 slicesQuality_.size() == volume_->GetPixelData().GetDepth()); | |
| 355 | |
| 356 if (quality >= slicesQuality_[sliceIndex]) | |
| 357 { | |
| 358 { | |
| 359 ImageBuffer3D::SliceWriter writer(volume_->GetPixelData(), VolumeProjection_Axial, sliceIndex); | |
| 360 Orthanc::ImageProcessing::Copy(writer.GetAccessor(), image); | |
| 361 } | |
| 362 | |
| 363 volume_->IncrementRevision(); | |
| 364 seriesGeometry_.IncrementSliceRevision(sliceIndex); | |
| 365 slicesQuality_[sliceIndex] = quality; | |
| 366 | |
| 367 BroadcastMessage(DicomVolumeImage::ContentUpdatedMessage(*volume_)); | |
| 368 } | |
| 369 | |
| 370 ScheduleNextSliceDownload(); | |
| 371 } | |
| 372 | |
| 373 | |
| 374 void OrthancSeriesVolumeProgressiveLoader::LoadBestQualitySliceContent(const GetOrthancImageCommand::SuccessMessage& message) | |
| 375 { | |
| 376 SetSliceContent(GetSliceIndexPayload(message.GetOrigin()), message.GetImage(), BEST_QUALITY); | |
| 377 } | |
| 378 | |
| 379 | |
| 380 void OrthancSeriesVolumeProgressiveLoader::LoadJpegSliceContent(const GetOrthancWebViewerJpegCommand::SuccessMessage& message) | |
| 381 { | |
| 382 unsigned int quality; | |
| 383 | |
| 384 switch (message.GetOrigin().GetQuality()) | |
| 385 { | |
| 386 case 50: | |
| 387 quality = LOW_QUALITY; | |
| 388 break; | |
| 389 | |
| 390 case 90: | |
| 391 quality = MIDDLE_QUALITY; | |
| 392 break; | |
| 393 | |
| 394 default: | |
| 395 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 396 } | |
| 397 | |
| 398 SetSliceContent(GetSliceIndexPayload(message.GetOrigin()), message.GetImage(), quality); | |
| 399 } | |
| 400 | |
| 401 | |
| 402 OrthancSeriesVolumeProgressiveLoader::OrthancSeriesVolumeProgressiveLoader(const boost::shared_ptr<DicomVolumeImage>& volume, | |
| 403 IOracle& oracle, | |
| 404 IObservable& oracleObservable) : | |
| 405 IObserver(oracleObservable.GetBroker()), | |
| 406 IObservable(oracleObservable.GetBroker()), | |
| 407 oracle_(oracle), | |
| 408 active_(false), | |
| 409 simultaneousDownloads_(4), | |
| 410 volume_(volume), | |
| 411 sorter_(new BasicFetchingItemsSorter::Factory) | |
| 412 { | |
| 413 oracleObservable.RegisterObserverCallback( | |
| 414 new Callable<OrthancSeriesVolumeProgressiveLoader, OrthancRestApiCommand::SuccessMessage> | |
| 415 (*this, &OrthancSeriesVolumeProgressiveLoader::LoadGeometry)); | |
| 416 | |
| 417 oracleObservable.RegisterObserverCallback( | |
| 418 new Callable<OrthancSeriesVolumeProgressiveLoader, GetOrthancImageCommand::SuccessMessage> | |
| 419 (*this, &OrthancSeriesVolumeProgressiveLoader::LoadBestQualitySliceContent)); | |
| 420 | |
| 421 oracleObservable.RegisterObserverCallback( | |
| 422 new Callable<OrthancSeriesVolumeProgressiveLoader, GetOrthancWebViewerJpegCommand::SuccessMessage> | |
| 423 (*this, &OrthancSeriesVolumeProgressiveLoader::LoadJpegSliceContent)); | |
| 424 } | |
| 425 | |
| 426 | |
| 427 void OrthancSeriesVolumeProgressiveLoader::SetSimultaneousDownloads(unsigned int count) | |
| 428 { | |
| 429 if (active_) | |
| 430 { | |
| 431 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 432 } | |
| 433 else if (count == 0) | |
| 434 { | |
| 435 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 436 } | |
| 437 else | |
| 438 { | |
| 439 simultaneousDownloads_ = count; | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 | |
| 444 void OrthancSeriesVolumeProgressiveLoader::LoadSeries(const std::string& seriesId) | |
| 445 { | |
| 446 if (active_) | |
| 447 { | |
| 448 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 449 } | |
| 450 else | |
| 451 { | |
| 452 active_ = true; | |
| 453 | |
| 454 std::auto_ptr<OrthancRestApiCommand> command(new OrthancRestApiCommand); | |
| 455 command->SetUri("/series/" + seriesId + "/instances-tags"); | |
| 456 | |
| 457 oracle_.Schedule(*this, command.release()); | |
| 458 } | |
| 459 } | |
| 460 | |
| 461 | |
| 462 IVolumeSlicer::IExtractedSlice* | |
| 463 OrthancSeriesVolumeProgressiveLoader::ExtractSlice(const CoordinateSystem3D& cuttingPlane) | |
| 464 { | |
| 465 if (volume_->HasGeometry()) | |
| 466 { | |
| 467 return new ExtractedSlice(*this, cuttingPlane); | |
| 468 } | |
| 469 else | |
| 470 { | |
| 471 return new IVolumeSlicer::InvalidSlice; | |
| 472 } | |
| 473 } | |
| 474 } |