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M-ANLZ(4)							     M-ANLZ(4)

NAME
       m-anlz - Analyze (SPM) medical image format (MedCon)

DESCRIPTION
  This is a very simple format. The basic headers are written in one file with
  extension `.hdr', the image data in another file with extension `.img'.

  The basic defines for the format:

  ---------------------------------------------------------------------------

  typedef struct Header_Key_t{
	  Int32	 sizeof_hdr;		   /* 348 or 148		 */
	  char data_type[10];		   /* "dsr"			 */
	  char db_name[18];		   /* filename without extension */
	  Int32 extents;		   /* 16384			 */
	  Int16 session_error;
	  char regular;			   /* 'r'			 */
	  char hkey_un0;
  } MDC_ANLZ_HEADER_KEY;

  #define MDC_ANLZ_HK_SIZE 40

  typedef struct Image_Dimensions_t{
	  Int16 dim[8];			   /* [0] = # of dimensions	 */
					   /* [1] = X-dim		 */
					   /* [2] = Y-dim		 */
					   /* [3] = Z-dim		 */
					   /* [4] = t-dim		 */
					   /* ...			 */
	  Int16 unused[7];
	  Int16 datatype;		   /* pixel type		 */
					   /*  0 = Unknown   1 = one-bit */
					   /*  2 = Uint8     4 = Int16	 */
					   /*  8 = Int32    16 = float	 */
					   /* 32 = complex  64 = double	 */
					   /*128 = RGB	   255 = all	 */

	  Int16 bitpix;			   /* bits per pixel		 */
	  Int16 dim_un0;
	  float pixdim[8];		   /* [0] = # of dimensions	 */
					   /* [1] = X-dim (mm)		 */
					   /* [2] = Y-dim (mm)		 */
					   /* [3] = Z-dim (mm)		 */
					   /* [4] = t-dim (ms)		 */
					   /* ...			 */
	  float funused[6];
	  float compressed;
	  float verified;
	  Int32 glmax,glmin;
  } MDC_ANLZ_IMAGE_DIMS;

  #define MDC_ANLZ_IMD_SIZE 108

  typedef struct Data_History_t{
	  char descrip[80];
	  char aux_file[24];
	  char orient;			   /* patient orientation	 */
					   /* 0 = transverse unflipped	 */
					   /* 1 = coronal unflipped	 */
					   /* 2 = sagittal unflipped	 */
					   /* 3 = transverse flipped	 */
					   /* 4 = coronal flipped	 */
					   /* 5 = sagittal flipped	 */

	  char originator[10];
	  char generated[10];
	  char scannum[10];
	  char patient_id[10];
	  char exp_date[10];
	  char exp_time[10];
	  char hist_un0[3];
	  Int32 views;
	  Int32 vols_added;
	  Int32 start_field;
	  Int32 field_skip;
	  Int32 omax, omin;
	  Int32 smax, smin;
  } MDC_ANLZ_DATA_HIST;

  #define MDC_ANLZ_DH_SIZE 200

  ---------------------------------------------------------------------------

  The structures are defined in the order as they should be found in the file.
  The Data_History header is not obliged. The SPM Analyze format, intended for
  the SPM software, differs a little from the normal Analyze format.

  What does the format support or not support:

  ===========================================================================
  Item		  Supported				Not Supported
  ===========================================================================
  Color Map	: grayscale				      -
  File Endian	: little & big				      -
  Pixeltypes	: 1-bit, Uint8, Int16, Int32	       Int8,Uint16,Uint32
		  float, double, (complex)		 Int64,Uint64
  ===========================================================================
  Scaling factors  : quantify & calibrate factors/image	 are NOT supported
  ---------------------------------------------------------------------------
  Dimensions/Image : different dimensions for each image are NOT supported
  ---------------------------------------------------------------------------
  Pixeltypes/Image : different pixeltypes for each image are NOT supported
  ---------------------------------------------------------------------------
  SPM remarks	   : 1) imd.funused[0] = the offset
		     2) imd.funused[1] = one global scaling factor
		     3) (Int16)dh.originator[0...1] \
			(Int16)dh.originator[2...3]  } =  origin (X, Y, Z)
			(Int16)dh.originator[4...5] /
  ===========================================================================

NOTES
  A note about the image (patient) orientation in SPM:

       X-axis
	    increases from leftside  (hand) to rightside (hand).

       Y-axis
	    increases from posterior (back) to anterior	 (front).

       Z-axis
	    increases from inferior  (feet) to superior	 (head).

FILES
  /usr/local/xmedcon/source/m-anlz.h	  The header file.
  /usr/local/xmedcon/source/m-anlz.c	  The source file.

SEE ALSO
  medcon(1), xmedcon(1), xmedcon-config(1)

  m-acr(4), m-gif(4), m-inw(4), m-intf(4), m-ecat(4)

  medcon(3)

AUTHOR
  (X)MedCon project was originally written by Erik Nolf (eNlf) for the	former
  PET-Centre at Ghent University (Belgium).

  e-mail:   enlf-at-users.sourceforge.net   www:   http://xmedcon.sourceforge.net

								     M-ANLZ(4)

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