BinNormalisationWithCalibration.h

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//
//
/*
    Copyright (C) 2020-2021, University College London
    Copyright (C) 2020, National Physical Laboratory
    This file is part of STIR.
 
    SPDX-License-Identifier: Apache-2.0
 
    See STIR/LICENSE.txt for details
*/
 
#ifndef __stir_recon_buildblock_BinNormalisationWithCalibration_H__
#define __stir_recon_buildblock_BinNormalisationWithCalibration_H__
 
#include "stir/RegisteredParsingObject.h"
#include "stir/Bin.h"
#include "stir/Radionuclide.h"
#include "stir/shared_ptr.h"
#include "stir/recon_buildblock/BinNormalisation.h"
#include "stir/decay_correction_factor.h"
 
START_NAMESPACE_STIR

class BinNormalisationWithCalibration : public BinNormalisation
{
private:
  using base_type = BinNormalisation;
 
public:
  BinNormalisationWithCalibration();

  Succeeded set_up(const shared_ptr<const ExamInfo>& exam_info_sptr, const shared_ptr<const ProjDataInfo>&) override;
  float get_calib_decay_branching_ratio_factor(const Bin&) const; // TODO find a better name
  float get_calibration_factor() const override;
  float get_branching_ratio() const;
 
  void set_calibration_factor(const float);
  void set_radionuclide(const Radionuclide&);
 
  // needs to be implemented by derived class
  virtual float get_uncalibrated_bin_efficiency(const Bin&) const = 0;


  float get_bin_efficiency(const Bin& bin) const final
  {
    return this->get_uncalibrated_bin_efficiency(bin) / this->_calib_decay_branching_ratio;
  }
 
protected:
  // parsing stuff
  void set_defaults() override;
  void initialise_keymap() override;
  bool post_processing() override;
 
private:
  // provide facility to switch off things?
  //  need to be added to the parsing keywords
  //  bool use_calibration_factor; // default to true
  float calibration_factor;
  Radionuclide radionuclide;

  float _calib_decay_branching_ratio;
};
 
END_NAMESPACE_STIR
 
#endif