dicom_viewer's Introduction

DICOM_viewer

A Unity hololens viewer for DICOM images

Setup

Create a zip file containing your DICOM media directories
Deploy the application to the device once
Connect the device via usb, and navigate to http://localhost:10080/FileExplorer.htm - USB will give better/more reliable data transfer
Navigate to LocalAppData\DICOM_viewer\LocalState
Click the Choose File button, and select your zip file. Do not click Upload - at the time of writing, there is a bug in the file explorer (see https://stackoverflow.com/questions/46409655/transfer-file-to-hololens-via-post-httprequest-error-429/47086736#47086736) - instead, enter this code in the javascript console (F12) -

(function(jQuery) {
var pathLinkData = jQuery(".pathLink:last-child").data(),
    path = pathLinkData.path,
    packagename = pathLinkData.packagename,
    knownfolderid = pathLinkData.knownfolderid,
    url = '/api/filesystem/apps/file?knownfolderid=' + knownfolderid + '&packagefullname=' + packagename + '&path=%5C%5C' + path,
    file_data = jQuery('#fileToUpload')[0].files[0],
    form_data = new FormData();

  form_data.append('file', file_data, file_data.name);

  jQuery.ajax({
    url: url,
    dataType: 'text',
    cache: false,
    contentType: false,
    processData: false,
    data: form_data,
    type: 'POST',
    error: function(xhr, textStatus, error) { console.error(error) },

  xhr: function() {
    var xhr = new window.XMLHttpRequest();

    xhr.upload.addEventListener("progress", function(evt) {
      if (evt.lengthComputable) {
        var percentComplete = evt.loaded / evt.total;
        percentComplete = parseInt(percentComplete * 100);
        console.log(percentComplete + "% done");
      }
    }, false);

    return xhr;
  },
    success: function(res){
      alert('uploaded');
      console.log(res);
    }
  });
})(jQuery);

this is mostly based on doublerebel's stack overflow snippet, I just added a progress indicator

Also upload a pin.txt containing your desired PIN via the same method
Run the application and it will unzip your zip file

Troubleshooting

If you have issues building to the device (dll version conflicts) - in the built VS project, open Tools->NuGet Package Manager->Manage NuGet Packages For Solution and update Microsoft.NETCore.UniversalWindowsPlatform

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dicom_viewer's Issues

attempting to load 3d in hololens crashes app due to non-async loading

focus break to pin doubles inputs, making pin unenterable

annotations system

secure file storage

browse datasets based on position / time in the body

app crashes due to memory limit if you open too many volumes

DynamicHeapAllocator allocation probe 1 failed - Could not get memory for large allocation 67108864.
DynamicHeapAllocator allocation probe 2 failed - Could not get memory for large allocation 67108864.
DynamicHeapAllocator allocation probe 3 failed - Could not get memory for large allocation 67108864.
DynamicHeapAllocator allocation probe 4 failed - Could not get memory for large allocation 67108864.
DynamicHeapAllocator out of memory - Could not get memory for large allocation 67108864!
Could not allocate memory: System out of memory!
Trying to allocate: 67108864B with 16 alignment. MemoryLabel: DynamicArray
Allocation happend at: Line:559 in C:\buildslave\unity\build\Runtime/Utilities/dynamic_array.h
Memory overview

[ ALLOC_DEFAULT ] used: 26685748B | peak: 0B | reserved: 38797312B
[ ALLOC_TEMP_JOB ] used: 0B | peak: 0B | reserved: 2097152B
[ ALLOC_TEMP_BACKGROUND_JOB ] used: 0B | peak: 0B | reserved: 1048576B
[ ALLOC_GFX ] used: 204244956B | peak: 0B | reserved: 206569580B
[ ALLOC_CACHEOBJECTS ] used: 2144368B | peak: 0B | reserved: 10485760B
[ ALLOC_TYPETREE ] used: 0B | peak: 0B | reserved: 0B
[ ALLOC_PROFILER ] used: 2026880B | peak: 0B | reserved: 8388608B
[ ALLOC_TEMP_THREAD ] used: 32768B | peak: 0B | reserved: 2883584B
Could not allocate memory: System out of memory!
Trying to allocate: 67108864B with 16 alignment. MemoryLabel: DynamicArray
Allocation happend at: Line:559 in C:\buildslave\unity\build\Runtime/Utilities/dynamic_array.h
Memory overview