stir::DynamicDiscretisedDensity Class Reference

Class of multiple image frames, one for each time frame Each time frame is a DiscretisedDensity<3,float> More...

#include "stir/DynamicDiscretisedDensity.h"

Inheritance diagram for stir::DynamicDiscretisedDensity:

Public Types
typedef DynamicDiscretisedDensity	hierarchy_base_type
	A typedef that can be used what the base of the hierarchy is. More...
typedef DiscretisedDensity< 3, float >	singleDiscDensT
typedef NestedIterator< DensitiesT::iterator, PtrBeginEndAllFunction< DensitiesT::iterator > >	full_iterator
	typedef for iterator that runs over all densels in all frames
typedef NestedIterator< DensitiesT::const_iterator, ConstPtrBeginEndAllFunction< DensitiesT::const_iterator > >	const_full_iterator
	typedef for const iterator that runs over all densels in all frames

Public Member Functions
	DynamicDiscretisedDensity (const DynamicDiscretisedDensity &argument)
	DynamicDiscretisedDensity (const TimeFrameDefinitions &time_frame_definitions, const double scan_start_time_in_secs_since_1970, const shared_ptr< Scanner > &scanner_sptr)
	DynamicDiscretisedDensity (const TimeFrameDefinitions &time_frame_definitions, const double scan_start_time_in_secs_since_1970, const shared_ptr< Scanner > &scanner_sptr, const shared_ptr< singleDiscDensT > &density_sptr)
	Construct an empty DynamicDiscretisedDensity based on a shared_ptr<DiscretisedDensity<3,float> >
DynamicDiscretisedDensity &	operator= (const DynamicDiscretisedDensity &argument)
const float	get_isotope_halflife () const
float	get_calibration_factor () const
const singleDiscDensT &	at (const unsigned int frame_num) const
	at method
singleDiscDensT &	at (const unsigned int frame_num)
	at method
const double	get_start_time_in_secs_since_1970 () const
	Return time of start of scan. More...
const float	get_scanner_default_bin_size () const
void	set_time_frame_definitions (const TimeFrameDefinitions &time_frame_definitions)
void	set_scanner (const Scanner &scanner)
const TimeFrameDefinitions &	get_time_frame_definitions () const
unsigned	get_num_time_frames () const
Succeeded	write_to_ecat7 (const std::string &filename) const
	write data to file Currently only in ECAT7 format. More...
void	calibrate_frames () const
void	decay_correct_frames ()
void	set_if_decay_corrected (const bool is_decay_corrected)
void	set_calibration_factor (const float calibration_factor)
void	set_num_densities (const int num_densities)
functions returning full_iterators
These return iterators that run through all elements in all time frames.
full_iterator	begin_all ()
const_full_iterator	begin_all () const
const_full_iterator	begin_all_const () const
full_iterator	end_all ()
const_full_iterator	end_all () const
const_full_iterator	end_all_const () const
get/set the densities
Warning The frame_num starts from 1
void	set_density (const singleDiscDensT &density, const unsigned int frame_num)
const std::vector< shared_ptr< singleDiscDensT > > &	get_densities () const
const singleDiscDensT &	get_density (const unsigned int frame_num) const
const singleDiscDensT &	operator[] (const unsigned int frame_num) const
singleDiscDensT &	get_density (const unsigned int frame_num)
	Avoid using this as it's unsafe.
singleDiscDensT &	operator[] (const unsigned int frame_num)
Public Member Functions inherited from stir::ExamData
	ExamData ()
	ExamData. More...
	ExamData (const shared_ptr< const ExamInfo > &_this_exam)
virtual const ExamInfo &	get_exam_info () const
virtual shared_ptr< const ExamInfo >	get_exam_info_sptr () const
	Get shared pointer to exam info.
virtual void	set_exam_info (ExamInfo const &)
	change exam info More...
void	set_exam_info_sptr (shared_ptr< const ExamInfo > new_exam_info_sptr)

Static Public Member Functions
static DynamicDiscretisedDensity *	read_from_file (const std::string &filename)

Additional Inherited Members
Protected Attributes inherited from stir::ExamData
shared_ptr< const ExamInfo >	exam_info_sptr

Detailed Description

Class of multiple image frames, one for each time frame Each time frame is a DiscretisedDensity<3,float>

Todo:

template in elemT and numDimensions?

Member Typedef Documentation

hierarchy_base_type

typedef DynamicDiscretisedDensity stir::DynamicDiscretisedDensity::hierarchy_base_type

A typedef that can be used what the base of the hierarchy is.

This typedef is used in write_to_file().

Member Function Documentation

set_density()

void stir::DynamicDiscretisedDensity::set_density	(	const singleDiscDensT &	density,
		const unsigned int	frame_num
	)

Warning

This method replaced the set_density_sptr as it was unsafe

References stir::DiscretisedDensity< num_dimensions, elemT >::clone(), stir::error(), and stir::TimeFrameDefinitions::get_num_time_frames().

get_start_time_in_secs_since_1970()

const double stir::DynamicDiscretisedDensity::get_start_time_in_secs_since_1970

(

)

const

Return time of start of scan.

Returns

the time in seconds since 1 Jan 1970 00:00 UTC, i.e. independent of your local time zone.

Note that the return type is a double. This allows for enough accuracy for a long time to come. It also means that the start time can have fractional seconds.

The time frame definitions should be relative to this time.

References stir::read_from_file().

write_to_ecat7()

Succeeded stir::DynamicDiscretisedDensity::write_to_ecat7

(

const std::string &

filename

)

const

write data to file Currently only in ECAT7 format.

Warning

write_time_frame_definitions() is not yet implemented, so time information is missing.

References stir::ecat::ecat7::DiscretisedDensity_to_ECAT7(), stir::ecat::ecat7::make_ECAT7_main_header(), stir::round_to(), and stir::warning().

Referenced by stir::ecat::ecat7::ECAT7DynamicDiscretisedDensityOutputFileFormat::actual_write_to_file().

decay_correct_frames()

void stir::DynamicDiscretisedDensity::decay_correct_frames

(

)

Warning

This function should be used only if the _decay_corrected is false. Time of a frame is taken as the mean time for each frame which is an accurate approximation only if frame_duration <<< isotope_halflife.

References stir::decay_correction_factor(), and stir::warning().

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

• /home/sirfuser/devel/STIRdistrib/STIR/src/include/stir/DynamicDiscretisedDensity.h
• /home/sirfuser/devel/STIRdistrib/STIR/src/buildblock/DynamicDiscretisedDensity.cxx
• /home/sirfuser/devel/STIRdistrib/STIR/src/include/stir/DynamicDiscretisedDensity.inl