SlicerLabkeyExtension/labkeySlicerPythonExtension/loadDicom.py

import slicer
import os
import subprocess
import re
import dicom

dicomModify=os.getenv("HOME")
if not dicomModify==None:
    dicomModify+="/software/install/"
    dicomModify+="dicomModify/bin/dicomModify"

class loadDicom(slicer.ScriptedLoadableModule.ScriptedLoadableModule):
    def __init__(self,parent):
        slicer.ScriptedLoadableModule.ScriptedLoadableModule.__init__(self, parent)
        self.className="loadDicom"
        self.parent.title="loadDicom"
        self.parent.categories = ["LabKey"]
        self.parent.dependencies = []
        self.parent.contributors = ["Andrej Studen (UL/FMF)"] # replace with "Firstname Lastname (Organization)"
        self.parent.helpText = """
            utilities for parsing dicom entries
            """
        self.parent.acknowledgementText = """
            Developed within the medical physics research programme of the Slovenian research agency.
            """ # replace with organization, grant and thanks.

class loadDicomWidget(slicer.ScriptedLoadableModule.ScriptedLoadableModuleWidget):
  """Uses ScriptedLoadableModuleWidget base class, available at:
  https://github.com/Slicer/Slicer/blob/master/Base/Python/slicer/ScriptedLoadableModule.py
  """

  def setup(self):
    slicer.ScriptedLoadableModule.ScriptedLoadableModuleWidget.setup(self)


class loadDicomLogic(slicer.ScriptedLoadableModule.ScriptedLoadableModuleLogic):
    def __init__(self,parent):
      slicer.ScriptedLoadableModule.ScriptedLoadableModuleLogic.__init__(self, parent)

      self.tag={
              'studyDate': {'tag':"0008,0020",'VR':'DA'},
              'studyTime': {'tag':"0008,0030",'VR':'TM'},
              'seriesTime': {'tag':"0008,0031",'VR':'TM'},
              'modality': {'tag':"0008,0060",'VR':'CS'},
              'presentationIntentType': {'tag':"0008,0068",'VR':'CS'},
              'manufacturer': {'tag':"0008,0070",'VR':'LO'},
              'institutionName': {'tag':"0008,0080",'VR':'LO'},
              'studyDescription': {'tag':"0008,1030",'VR':'LO'},
              'seriesDescription': {'tag':"0008,103e",'VR':'LO'},
              'manufacturerModelName': {'tag':"0008,1090",'VR':'LO'},
              'patientName': {'tag':"0010,0010",'VR':'PN'},
              'patientId': {'tag':"0010,0020",'VR':'LO'},
              'patientBirthDate': {'tag':"0010,0030",'VR':'DA'},
              'patientSex': {'tag':"0010,0040",'VR':'CS'},
              'patientAge': {'tag':"0010,1010",'VR':'AS'},
              'patientComments': {'tag':"0010,4000",'VR':'LT'},
              'sequenceName': {'tag':"0018,0024",'VR':'SH'},
              'kVP': {'tag':"0018,0060",'VR':'DS'},
              'percentPhaseFieldOfView': {'tag':"0018,0094",'VR':'DS'},
              'xRayTubeCurrent': {'tag':"0018,1151",'VR':'IS'},
              'exposure': {'tag':"0018,1152",'VR':'IS'},
              'imagerPixelSpacing': {'tag':"0018,1164",'VR':'DS'},
              'bodyPartThickness': {'tag':"0018,11a0",'VR':'DS'},
              'compressionForce': {'tag':"0018,11a2",'VR':'DS'},
              'viewPosition': {'tag':"0018,5101",'VR':'CS'},
              'fieldOfViewHorizontalFlip': {'tag':"0018,7034",'VR':'CS'},
              'studyInstanceUid': {'tag':"0020,000d",'VR':'UI'},
              'seriesInstanceUid': {'tag':"0020,000e",'VR':'UI'},
              'studyId': {'tag':"0020,0010",'VR':'SH'},
              'seriesNumber': {'tag':"0020,0011",'VR':'IS'},
              'instanceNumber': {'tag':"0020,0013",'VR':'IS'},
              'frameOfReferenceInstanceUid': {'tag':"0020,0052",'VR':'UI'},
              'imageLaterality': {'tag':"0020,0062",'VR':'CS'},
              'imagesInAcquisition': {'tag':"0020,1002",'VR':'IS'},
              'photometricInterpretation': {'tag':"0028,0004",'VR':'CS'},
              'reconstructionMethod': {'tag':"0054,1103",'VR':'LO'}
      }
      self.tagPyDicom={
              'studyDate': 0x00080020,
              'studyTime': 0x00080030,
              'modality': 0x00080060,
              'presentationIntentType': 0x00080068,
              'manufacturer': 0x00080070,
              'studyDescription': 0x00081030,
              'seriesDescription': 0x0008103e,
              'patientName': 0x00100010,
              'patientId': 0x00100020,
              'patientBirthDate': 0x00100030,
              'patientSex': 0x00100040,
              'patientComments': 0x00104000,
              'sequenceName': 0x00180024,
              'kVP': 0x00180060,
              'percentPhaseFieldOfView': 0x00180094,
              'xRayTubeCurrent': 0x00181151,
              'exposure': 0x00181152,
              'imagerPixelSpacing': 0x00181164,
              'bodyPartThickness': 0x001811a0,
              'compressionForce': 0x001811a2,
              'viewPosition': 0x00185101,
              'studyInstanceUid': 0x0020000d,
              'seriesInstanceUid': 0x0020000e,
              'studyId': 0x00200010,
              'seriesNumber': 0x00200011,
              'instanceNumber': 0x00200013,
              'frameOfReferenceInstanceUid': 0x00200052
              }
      #new_dict_items={
      #        0x001811a0: ('DS','BodyPartThickness','Body Part Thickness')
      #}
      #dicom.datadict.add_dict_entries(new_dict_items)


    def getHex(self,key):
        #convert string to hex key;
        fv=key.split(",")
        return int(fv[0],16)*0x10000+int(fv[1],16)

    def load(self,sNet,dir,doRemove=True):
        print("Loading dir {}").format(dir)
        dicomFiles=sNet.listRelativeDir(dir)
        #filelist=[os.path.join(dir,f) for f in os.listdir(dir)]
        filelist=[]
        for f in dicomFiles:
                localPath=sNet.DownloadFileToCache(f)
                f0=localPath
                f1=f0+"1"
                if not dicomModify==None:
                    subprocess.call(dicomModify+" "+f0+" "+f1+" && mv "+f1+" "+f0+";", shell=True)
                filelist.append(localPath)

        try:
            loadables=self.volumePlugin.examineForImport([filelist])
        except AttributeError:
            self.volumePlugin=slicer.modules.dicomPlugins['DICOMScalarVolumePlugin']()
            loadables=self.volumePlugin.examineForImport([filelist])


        for loadable in loadables:
            #TODO check if it makes sense to load a particular loadable
            fileBuffer = open(loadable.files[0])
            plan=dicom.read_file(fileBuffer)
            if loadable.name.find('imageOrientationPatient')>-1:
                continue
            volumeNode=self.volumePlugin.load(loadable)
            if volumeNode != None:
                vName='Series'+plan[0x00200011].value
                volumeNode.SetName(vName)

        try:
            loadableRTs=self.RTPlugin.examineForImport([filelist])
        except:
            self.RTPlugin=plugin=slicer.modules.dicomPlugins['DicomRtImportExportPlugin']()
            loadableRTs=self.RTPlugin.examineForImport([filelist])

        for loadable in loadableRTs:
            segmentationNode=self.RTPlugin.load(loadable)
            #if segmentationNode!= None:
            #    segmentationNode.SetName('SegmentationBR')

        if not doRemove:
            return

        for f in filelist:
            os.remove(f)

    def applyFilter(self,loadable,filter,nodeMetadata):

        filterOK=True
        print("Opening {}").format(loadable.files[0]);
        fileBuffer = open(loadable.files[0])
        try:
            plan = dicom.read_file(fileBuffer)
        except:
            return False

        for key in filter:
            #try:
            #    fileValue=plan[self.tag[key]].value
            #except KeyError:
            #        fileValue=None
            fileValue=dicomValue(loadable.files[0],self.tag[key]['tag'])


            if filter[key]=="SeriesLabel":
                nodeMetadata['seriesLabel']=fileValue
                continue

            if not filter[key]==None:
                if not fileValue==filter[key]:
                    print("File {} failed for tag {}: {}/{}").format(
                        loadable.files[0],key,fileValue,filter[key])
                    filterOK=False
                    break

            nodeMetadata[key]=fileValue


        return filterOK


    def loadVolumes(self,sNet,dir,filter,doRemove=True):
    #returns all series from the directory, each as a separate node in a node list
    #filter is a dictionary of speciifed dicom values, if filter(key)=None, that values
    #get set, if it isn't, the file gets checked for a match

        print("Loading dir {}").format(dir)
        dicomFiles=sNet.listRelativeDir(dir)
        #filelist=[os.path.join(dir,f) for f in os.listdir(dir)]
        filelist=[]
        for f in dicomFiles:
            localPath=sNet.DownloadFileToCache(f)
            f0=localPath
            f1=f0+"1"
            if not dicomModify==None:
                subprocess.call(dicomModify+" "+f0+" "+f1+" && mv "+f1+" "+f0+";", shell=True)
            filelist.append(localPath)

        try:
            loadables=self.volumePlugin.examineForImport([filelist])
        except AttributeError:
            self.volumePlugin=slicer.modules.dicomPlugins['DICOMScalarVolumePlugin']()
            loadables=self.volumePlugin.examineForImport([filelist])


        volumeNodes=[]
        print("Number of loadables:{}").format(len(loadables))
        for loadable in loadables:
            #TODO check if it makes sense to load a particular loadable

            print "Loading {} number of files: {}".format(loadable.name,len(loadable.files))
            for f in loadable.files:
                print "\t {}".format(f)
            #perform checks
            nodeMetadata={}
            filterOK=self.applyFilter(loadable,filter,nodeMetadata)

            if not filterOK:
                #skip this loadable
                continue

            volumeNode=self.volumePlugin.load(loadable,"DCMTK")
            if volumeNode != None:
                vName='Series'+nodeMetadata['seriesLabel']
                volumeNode.SetName(vName)
                volume={'node':volumeNode,'metadata':nodeMetadata}
                volumeNodes.append(volume)

        if doRemove:
            for f in filelist:
                os.remove(f)

        return volumeNodes

    def loadSegmentations(self,net,dir,filter,doRemove=True):

        print("Loading dir {}").format(dir)
        dicomFiles=net.listRelativeDir(dir)
        filelist=[net.DownloadFileToCache(f) for f in dicomFiles]
        segmentationNodes=[]

        try:
            loadableRTs=self.RTPlugin.examineForImport([filelist])
        except:
            self.RTPlugin=plugin=slicer.modules.dicomPlugins['DicomRtImportExportPlugin']()
            loadableRTs=self.RTPlugin.examineForImport([filelist])

        for loadable in loadableRTs:

            nodeMetadata={}
            filterOK=self.applyFilter(loadable,filter,nodeMetadata)

            if not filterOK:
                continue

            success=self.RTPlugin.load(loadable)

            if not success:
                print("Could not load RT structure set")
                return

            segNodes=slicer.util.getNodesByClass("vtkMRMLSegmentationNode")
            segmentationNode=segNodes[0]
            #assume we loaded the first node in list

            if segmentationNode != None:
                sName='Segmentation'+nodeMetadata['seriesLabel']
                segmentationNode.SetName(sName)
                segmentation={'node':segmentationNode,'metadata':nodeMetadata}
                segmentationNodes.append(segmentation)

        if not doRemove:
            return segmentationNodes

        for f in filelist:
            os.remove(f)

        return segmentationNodes

def isDicom(file):
    try:
        f=open(file,'rb')
    except IOError:
        return False

    f.read(128)
    dt=f.read(4)
    f.close()
    return dt=='DICM'


def dicomValue(file,tag):
    dcmdump=os.path.join(os.environ['SLICER_HOME'],"bin")
    dcmdump=os.path.join(dcmdump,"dcmdump")
    try:
        out=subprocess.check_output([dcmdump,'+p','+P',tag,file])
        print("Tag {} Line '{}'").format(tag,out)
        if len(out)==0:
            return out
        tag1="^\({}\)".format(tag)
        lst=out.split('\n')
        rpl=[re.sub(r'^.*\[(.*)\].*$',r'\1',f) for f in lst]
        mtch=[re.match(tag1,f) for f in lst]
        out=[x for y,x in zip(mtch,rpl) if not y==None]
        out=out[0]
        #out=re.sub(r'^.*\[(.*)\].*\n$',r'\1',out)
        #separate out series
        print("Tag {} Parsed value {}").format(tag,out)
        if out.find('\\')>-1:
            out=out.split('\\')

        return out
    except subprocess.CalledProcessError as e:
        return None

def clearNodes():
    nodes=[]
    nodes.extend(slicer.util.getNodesByClass("vtkMRMLScalarVolumeNode"))
    nodes.extend(slicer.util.getNodesByClass("vtkMRMLScalarVolumeDisplayNode"))
    nodes.extend(slicer.util.getNodesByClass("vtkMRMLSegmentationNode"))
    nodes.extend(slicer.util.getNodesByClass("vtkMRMLSegmentationDisplayNode"))
    for node in nodes:
        slicer.mrmlScene.RemoveNode(node)