imgscanner.c File Reference

Scanner specific parameters for IMG data. More...

#include "libtpcimgp.h"

Go to the source code of this file.

Functions
int	imgSetScanner (IMG *img, int scanner_type)

Detailed Description

Scanner specific parameters for IMG data.

Author

Vesa Oikonen

Definition in file imgscanner.c.

Function Documentation

imgSetScanner()

int imgSetScanner	(	IMG *	img,
		int	scanner_type )

Sets scanner specific parameters in IMG data. If possible, set image zoom before calling this.

Returns

Returns 0, if ok.

Parameters

img	IMG data which is filled with scanner specific information
scanner_type	SCANNER_ECAT931, SCANNER_ADVANCE, SCANNER_HRPLUS, SCANNER_HRRT, SCANNER_STEVCT_PET, as defined in libtpcimgio.h

Definition at line 14 of file imgscanner.c.

  {
  int rayNr;
  
  if(img->status<IMG_STATUS_OCCUPIED) return(1);
  img->scanner=scanner_type;
  /* Set zoom to 1.0, if it is not set */
  if(img->zoom<=0.0) img->zoom=1.0;
  /* Then the others */
  if(scanner_type==SCANNER_ECAT931) {
    // dimz 15
    rayNr=192;
    img->axialFOV=108.;
    img->transaxialFOV=600.826;
    img->sampleDistance=3.12932;
    img->sizez=6.75;
  } else if(scanner_type==SCANNER_ADVANCE) {
    // dimz 35
    rayNr=281;
    img->axialFOV=153.;
    img->transaxialFOV=550.;
    img->sampleDistance=1.970177;
    img->sizez=4.25;
  } else if(scanner_type==SCANNER_HRPLUS) {
    rayNr=288;
    img->axialFOV=155.2;
    img->transaxialFOV=583.;
    img->sampleDistance=2.25; /* bin size */
    img->sizez=2.425;
  } else if(scanner_type==SCANNER_HRRT) {
    rayNr=256;
    img->axialFOV=252.28;
    img->transaxialFOV=312.;
    img->sampleDistance=1.08; /* bin size */
    img->sizez=img->sizex=img->sizey=1.218750;
  } else if(scanner_type==SCANNER_STEVCT_PET) {
    // dimz 47
    rayNr=0;
    img->sizez=3.27;
    img->sizex=img->sizey=5.46875;
/*} else if(scanner_type==SCANNER_DMI_PET) { // Aino
    rayNr=544;
    img->axialFOV=200.;
    img->transaxialFOV=700.;
    img->sizez=nan("");
    img->sizex=img->sizey=nan("");
*/
  } else
    return(2);
  /* If this is image, then set also pixel sizes */
  if(img->type==IMG_TYPE_IMAGE) {
    if(scanner_type!=SCANNER_HRRT && scanner_type!=SCANNER_STEVCT_PET) {
      img->sizex=img->sizey=
        img->sampleDistance*(float)rayNr / ( (float)img->dimx*img->zoom );
    } else {
      img->sizex=img->sizey=
        img->transaxialFOV / ( (float)img->dimx*img->zoom );
    }
  }
  
  return(0);
}

Referenced by imgAnalyzeToEcat(), and imgNiftiToEcat().