message: FIX: wrong index for cylindrical detectors
diff: @@ -324,7 +324,7 @@ BackProjectionImageFilter<TInputImage,TOutputImage>
  // Interpolate if in projection
  if( interpolator->IsInsideBuffer(pointProjIdx) )
  {
  - typename TOutputImage::PixelType v = interpolator->EvaluateAtContinuousIndex(pointProj);
  + typename TOutputImage::PixelType v = interpolator->EvaluateAtContinuousIndex(pointProjIdx);
  itOut.Set(itOut.Get() + v);
  }
  