/usr/include/odinseq/seqacqspiral.h is in libodin-dev 1.8.8-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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seqacqspiral.h - description
-------------------
begin : Tue Nov 11 2003
copyright : (C) 2000-2014 by Thies H. Jochimsen
email : thies@jochimsen.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef SEQACQSPIRAL_H
#define SEQACQSPIRAL_H
#include <odinseq/seqlist.h>
#include <odinseq/seqparallel.h>
#include <odinseq/seqacq.h>
#include <odinseq/seqdelay.h>
#include <odinseq/seqgradspiral.h>
#include <odinseq/seqrotmatrixvector.h>
#include <odinseq/seqgradtrapez.h>
/**
* @addtogroup odinseq
* @{
*/
/**
* \brief Acquisition + spiral gradient
*
* This class contains a gradient with a spiral k-space trajectory together with an acquisition window
*/
class SeqAcqSpiral : public virtual SeqAcqInterface, public SeqObjList {
// virtual functions of SeqFreqChanInterface are marhshalled to acq
public:
/**
* Constructs an acquisition window with a simultaneous spiral gradient labeled 'object_label' and the
* following properties:
* - sweepwidth: The sampling frequency
* - fov: The Field of View in radial direction
* - sizeRadial: The number of image points in radial direction
* - numofSegments : The number of spiral interleaves
* - traj: The spiral trajectory (will be modified, if neccessary)
* - inout: Spiral-in spiral-out trajectory
* - optimize: Optimize trajectory for minimum readout length if trajectory has a free tunable parameter
* - nucleus: See class 'SeqAcq' for explanation
* - phaselist: See class 'SeqAcq' for explanation
*/
SeqAcqSpiral(const STD_string& object_label,double sweepwidth, float fov,
unsigned int sizeRadial, unsigned int numofSegments, JDXtrajectory& traj,
bool inout=false, bool optimize=false, const STD_string& nucleus="",const dvector& phaselist=0);
/**
* Constructs an acquisition window with spiral gradient which is a copy of 'sas'
*/
SeqAcqSpiral(const SeqAcqSpiral& sas);
/**
* Constructs an empty acquisition window with spiral gradient with the given label.
*/
SeqAcqSpiral(const STD_string& object_label="unnamedSeqAcqSpiral");
/**
* This assignment operator will make this object become an exact copy of 'sar'.
*/
SeqAcqSpiral& operator = (const SeqAcqSpiral& sas);
/**
* Returns the vector of the spiral interleaves (for loop insertion)
*/
const SeqVector& get_segment_vector() const {return rotvec;}
/**
* Returns the k-space trajectory for the interleave 'iseg'
*/
fvector get_ktraj(unsigned int iseg, direction channel) const;
/**
* Returns the Jacobian determinante, i.e. the correction function
* for non-uniform weighting of k-space
*/
fvector get_denscomp() const;
// marshalling virtual functions of SeqAcqInterface to acq, except:
double get_acquisition_center() const {return preacq.get_duration()+acq.get_acquisition_center();}
double get_acquisition_start() const {return preacq.get_duration()+acq.get_acquisition_start();}
SeqAcqInterface& set_sweepwidth(double sw, float os_factor); // produce warning
private:
// overwriting virtual functions from SeqClass
bool prep();
void common_init();
void build_seq();
SeqParallel par;
SeqGradSpiral spirgrad_in;
SeqGradSpiral spirgrad_out;
SeqDelay preacq;
SeqAcq acq;
SeqGradTrapezParallel gbalance;
SeqRotMatrixVector rotvec;
bool inout_traj;
};
/** @}
*/
#endif
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