NAME

DESCRIPTION

The basic defines for the format:

---------------------------------------------------------------------------
typedef struct Head_start_t {
        Int32 mark;           /* should be HEADER_MARK                */
        Int16 version;        /* high*256 + low                       */
        Int16 size_header;    /* whole header (in bytes)              */
        Int16 size_start;     /* sizeof(Head_start_t)                 */
        Int16 size_gen;       /* sizeof(Head_gen_t)                   */
        Int16 size_spec;      /* sizeof(Head_spec_t)                  */
        char  reserved[10];
} MDC_INW_HEAD_START;         /* current size: 24                     */
#define MDC_INW_HEAD_START_SIZE 24
typedef struct Head_gen_t {
        Int16 no;             /* number of planes                     */
        Int16 sizeX;          /* number of columns                    */
        Int16 sizeY;          /* number of rows                       */
        Int16 pixel_type;     /* sizeof(pixel)                        */
                              /* for compatibility only 2 is allowed  */
        Int16 init_trans;     /* initial translation (mm)             */
        Int16 dummy1;         /* for alignment reasons only           */
        /* Note: We take the positive axis into the gantry !
                 This means, if the patient lies with his head into
                 the gantry, the head has higher translation offset
                 than his feet                                        */
        char  day[12];        /* day of first scan eg. 04-AUG-89      */
        Int32 time;           /* seconds after midnight               */
                              /* first scan or time activity measured */
        float decay_cst;      /* NOT half_life ! (discards log(2))    */
                              /* decay_cst = half_life / log(2)       */
        float pixel_size;     /* sampling distance (mm)               */
        float max;            /* scaled maximum of all images         */
        float min;
        Int16 scanner;        /* EcatII, EcatIV                       */
        char  reconstruction; /* reconFBP, reconMaxLik,...            */
        char  recon_version;  /* reconstruction version (0-99)        */
        char  reserved[24];
} MDC_INW_HEAD_GEN;           /* current size: 72                     */
#define MDC_INW_HEAD_GEN_SIZE 72
typedef struct Head_spec_t {
        Int32 time;           /* time relative to gen.time (secs)     */
        float cal_cst;        /* abs_activ(uCU/ml) = cal_cst*pix_val  */
                              /* cal_cst = calibr_cst * decay_comp    */
                              /* decay_comp = exp(time/decay_cst)     */
        Int32 max;            /* maximum in plane                     */
        Int32 min;            /* minimum in plane                     */
        Int16 trans;          /* translation relative to gen.trans mm */
        char  reserved[6];
} MDC_INW_HEAD_SPEC;          /* current size: 24                     */ 
#define MDC_INW_HEAD_SPEC_SIZE 24
---------------------------------------------------------------------------

What does the format support or not support:

===========================================================================
Item            Supported                             Not Supported
===========================================================================
Color Map     : grayscale                                   -
File Endian   : little                                     big
Pixeltypes    : Int16                                       -
===========================================================================
Scaling factors  : quantify or calibrate factors/image are supported
---------------------------------------------------------------------------
Dimensions/Image : different dimensions for each image are NOT supported
---------------------------------------------------------------------------
Pixeltypes/Image : different pixeltypes for each image are NOT supported
===========================================================================

NOTES

Following the headers are the binary image data. The images are stored from left to right and from top to bottom. The pixel values are Int16, little endian.

FILES

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

SEE ALSO

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

medcon(3)

AUTHOR