svkMRSCombine Class Reference

#include <svkMRSCombine.h>

Inheritance diagram for svkMRSCombine:

Public Types
enum	CombinationMethod {   UNDEFINED_COMBINATION = 0, ADDITION, SUBTRACTION, SUM_OF_SQUARES,   WEIGHTED_ADDITION }
enum	CombinationDimension { COIL = 0, TIME }
enum	PortName { SPECTRA = 0, WEIGHTS = 1 }

Public Member Functions
	vtkTypeMacro (svkMRSCombine, svkImageInPlaceFilter)
void	SetCombinationMethod (CombinationMethod method)
void	SetCombinationDimension (CombinationDimension dimension)
Public Member Functions inherited from svkImageInPlaceFilter
	vtkTypeMacro (svkImageInPlaceFilter, vtkImageInPlaceFilter)
svkImageData *	GetOutput ()
svkImageData *	GetOutput (int port)
svkImageData *	GetImageDataInput (int port)

Static Public Member Functions
static svkMRSCombine *	New ()

Protected Member Functions
	svkMRSCombine ()
	~svkMRSCombine ()
virtual int	FillInputPortInformation (int port, vtkInformation *info)
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestData (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
Protected Member Functions inherited from svkImageInPlaceFilter
	svkImageInPlaceFilter ()
	~svkImageInPlaceFilter ()
virtual int	FillOutputPortInformation (int vtkNotUsed(port), vtkInformation *info)
virtual int	FillInputPortInformation (int vtkNotUsed(port), vtkInformation *info)

Detailed Description

WARNING: This Algorithm is a beta version for RSNA that simply adds the complex values from each coil without weighting.

Class that combines single coild data into a combined image. Complex data must be in phase prior to combining for constructive addition of complex data (see svkMultiCoilPhase). Sum of squares outputs magnitude data and is not sensitive to the phase of the complex input data. The weighting factors used in the linear combination may be set from a) spatially dependent coil sensitivity maps (experimentally derived or other), b) peak amplitude (e.g. h20 peak), or constant.

This is(will be) based on methodes derived and validated in the Sarah Nelson lab at UCSF, Department of Radiology and Biomedical Imaging.

References:

1. "A Comparison of Two Phase Correction Strategies in Multi-Channel MRSI Reconstruction" W. Bian, J.C. Crane, W. Sohn, I. Park, E. Ozturk-Isik, S.J. Nelson ISMRM Annual Meeting, 2009 http://www.ismrm.org/09/Session14.htm

Member Enumeration Documentation

enum CombinationDimension

Enumerator
COIL
TIME

enum CombinationMethod

Enumerator
UNDEFINED_COMBINATION
ADDITION
SUBTRACTION
SUM_OF_SQUARES
WEIGHTED_ADDITION

enum PortName

Enumerator
SPECTRA
WEIGHTS

Constructor & Destructor Documentation

svkMRSCombine ( )

protected

References svkMRSCombine::ADDITION, and svkMRSCombine::COIL.

~svkMRSCombine ( )

protected

Member Function Documentation

int FillInputPortInformation ( int  port, vtkInformation *  info  )

protectedvirtual

Inputs:

• requires an MRS object to combine
• optional MRI object containing weights for each point being combined.

static svkMRSCombine* New ( )

static

int RequestData ( vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector  )

protectedvirtual

References svkProvenance::AddAlgorithm(), svkMRSCombine::ADDITION, svkImageInPlaceFilter::GetOutput(), svkImageData::GetProvenance(), svkMRSCombine::SUBTRACTION, svkMRSCombine::SUM_OF_SQUARES, and svkMRSCombine::WEIGHTED_ADDITION.

int RequestInformation ( vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector  )

protectedvirtual

void SetCombinationDimension

(

CombinationDimension

dimension

)

void SetCombinationMethod

(

CombinationMethod

method

)

vtkTypeMacro	(	svkMRSCombine	,
		svkImageInPlaceFilter
	)

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The documentation for this class was generated from the following files:

• svkMRSCombine.h
• svkMRSCombine.cc