Skip to main content

MriSlicer

Namespace: MRILIB  ·  Library: MRI Library

#include <mri/mri_slicer.h>

class MRILIB::MriSlicer

Orthogonal-plane resampler (axial / coronal / sagittal) from MriVolData to MriSliceImage.

Pure static methods no instance state is owned. For a given orientation and slice index, samples the source volume at the matching row/column/depth plane, normalises voxel intensities into 8-bit grayscale via the volume's percentile-clipped window, and emits the result with the slice→RAS transform the viewer needs to draw rulers and crosshairs in millimetres.

Static Methods​

extractSlice(volData, dims, vox2ras, orientation, sliceIndex)​

Extract a 2D slice from a 3D volume stored as a flat array.

Parameters:

  • volData : const QVector< float > & Flat array of voxel intensities (dimX x dimY x dimZ, x-fastest).

  • dims : const QVector< int > & Volume dimensions {dimX, dimY, dimZ}.

  • vox2ras : const Eigen::Matrix4f & 4x4 voxel-to-RAS transform.

  • orientation : SliceOrientation Slice orientation (Axial, Coronal, or Sagittal).

  • sliceIndex : int Index along the slicing axis.

Returns:

  • MriSliceImage — The extracted slice image.

extractOrthogonal(volData, dims, vox2ras, rasPoint)​

Extract all three orthogonal slices at a given RAS point.

Parameters:

  • volData : const QVector< float > & Flat array of voxel intensities.

  • dims : const QVector< int > & Volume dimensions {dimX, dimY, dimZ}.

  • vox2ras : const Eigen::Matrix4f & 4x4 voxel-to-RAS transform.

  • rasPoint : const Eigen::Vector3f & RAS coordinate to slice through.

Returns:

  • QVector< MriSliceImage > — Vector of three MriSliceImage (axial, coronal, sagittal).

rasToVoxel(vox2ras, rasPoint)​

Convert RAS coordinate to voxel index.

Parameters:

  • vox2ras : const Eigen::Matrix4f & 4x4 voxel-to-RAS transform.

  • rasPoint : const Eigen::Vector3f & RAS coordinate.

Returns:

  • Eigen::Vector3i — Voxel index (rounded to nearest integer).

voxelToRas(vox2ras, voxel)​

Convert voxel index to RAS coordinate.

Parameters:

  • vox2ras : const Eigen::Matrix4f & 4x4 voxel-to-RAS transform.

  • voxel : const Eigen::Vector3i & Voxel index.

Returns:

  • Eigen::Vector3f — RAS coordinate.

extractSlice(vol, orientation, sliceIndex)​

Extract a 2D slice from an MriVolData volume.

Parameters:

  • vol : const MriVolData & Loaded MRI volume.

  • orientation : SliceOrientation Slice orientation.

  • sliceIndex : int Index along the slicing axis.

Returns:

  • MriSliceImage — The extracted slice image.

extractOrthogonal(vol, rasPoint)​

Extract all three orthogonal slices at a given RAS point.

Parameters:

  • vol : const MriVolData & Loaded MRI volume.

  • rasPoint : const Eigen::Vector3f & RAS coordinate to slice through.

Returns:

  • QVector< MriSliceImage > — Vector of three MriSliceImage (axial, coronal, sagittal).

rasToVoxel(vol, rasPoint)​

Convert RAS coordinate to voxel index using a volume's transform.

Parameters:

  • vol : const MriVolData & Loaded MRI volume.

  • rasPoint : const Eigen::Vector3f & RAS coordinate.

Returns:

  • Eigen::Vector3i — Voxel index (rounded to nearest integer).

voxelToRas(vol, voxel)​

Convert voxel index to RAS coordinate using a volume's transform.

Parameters:

  • vol : const MriVolData & Loaded MRI volume.

  • voxel : const Eigen::Vector3i & Voxel index.

Returns:

  • Eigen::Vector3f — RAS coordinate.

Authors of this file​