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Re #2113: disable 2D MPR when datasets have multiple slices for the same ImagePositionPatient (#2160)

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fix: disable 2D MPR when datasets are 4D
This commit is contained in:
Davide Punzo 2020-12-03 17:08:38 +01:00 committed by GitHub
parent 5210c80369
commit b59187c74d
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1 changed files with 51 additions and 1 deletions
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52
extensions/vtk/src/toolbarComponents/VTKMPRToolbarButton.js
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@ -31,7 +31,57 @@ const _isDisplaySetReconstructable = (viewportSpecificData = {}, activeViewportI
if (!displaySet) {
return false;
};
}
// 2D MPR is not currently available for 4D datasets.
// Assuming that slices at different time have the same position, here we just check if
// there are multiple slices for the same ImagePositionPatient and disable MPR.
// A better heuristic would be checking 4D tags, e.g. the presence of multiple TemporalPositionIdentifier values.
// However, some studies (e.g. https://github.com/OHIF/Viewers/issues/2113) do not have such tags.
for (let ii = 0; ii < displaySet.numImageFrames; ++ii){
const imageIdControl = displaySet.images[ii].getImageId()
const instanceMetadataControl = cornerstone.metaData.get('instance', imageIdControl)
if (!instanceMetadataControl ||
instanceMetadataControl === undefined ||
!instanceMetadataControl.ImagePositionPatient ||
instanceMetadataControl.ImagePositionPatient === undefined ) {
// if ImagePositionPatient is missing, skip the 4D datasets check.
// do not return false, because it could be a 3D dataset.
continue;
}
let xImagePositionPatientControl = instanceMetadataControl.ImagePositionPatient[0];
let yImagePositionPatientControl = instanceMetadataControl.ImagePositionPatient[1];
let zImagePositionPatientControl = instanceMetadataControl.ImagePositionPatient[2];
for (let jj = ii + 1; jj < displaySet.numImageFrames; ++jj){
const imageId = displaySet.images[jj].getImageId()
const instanceMetadata = cornerstone.metaData.get('instance', imageId)
if (!instanceMetadata ||
instanceMetadata === undefined ||
!instanceMetadata.ImagePositionPatient ||
instanceMetadata.ImagePositionPatient === undefined) {
// if ImagePositionPatient is missing, skip the 4D datasets check.
// do not return false, because it could be a 3D dataset.
continue;
}
let xImagePositionPatient = instanceMetadata.ImagePositionPatient[0];
let yImagePositionPatient = instanceMetadata.ImagePositionPatient[1];
let zImagePositionPatient = instanceMetadata.ImagePositionPatient[2];
if (xImagePositionPatientControl === xImagePositionPatient &&
yImagePositionPatientControl === yImagePositionPatient &&
zImagePositionPatientControl === zImagePositionPatient){
return false;
}
}
}
return displaySet.isReconstructable;
};