1M-ANLZ(4) Kernel Interfaces Manual M-ANLZ(4)
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6 m-anlz - Analyze (SPM) medical image format (MedCon)
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9 This is a very simple format. The basic headers are written in one file with
10 extension `.hdr', the image data in another file with extension `.img'.
11 The basic defines for the format:
13 ---------------------------------------------------------------------------
15 typedef struct Header_Key_t{
17 Int32 sizeof_hdr; /* 348 or 148 */
18 char data_type[10]; /* "dsr" */
19 char db_name[18]; /* filename without extension */
20 Int32 extents; /* 16384 */
21 Int16 session_error;
22 char regular; /* 'r' */
23 char hkey_un0;
24 } MDC_ANLZ_HEADER_KEY;
25 #define MDC_ANLZ_HK_SIZE 40
27 typedef struct Image_Dimensions_t{
29 Int16 dim[8]; /* [0] = # of dimensions */
30 /* [1] = X-dim */
31 /* [2] = Y-dim */
32 /* [3] = Z-dim */
33 /* [4] = t-dim */
34 /* ... */
35 Int16 unused[7];
36 Int16 datatype; /* pixel type */
37 /* 0 = Unknown 1 = one-bit */
38 /* 2 = Uint8 4 = Int16 */
39 /* 8 = Int32 16 = float */
40 /* 32 = complex 64 = double */
41 /*128 = RGB 255 = all */
42 Int16 bitpix; /* bits per pixel */
44 Int16 dim_un0;
45 float pixdim[8]; /* [0] = # of dimensions */
46 /* [1] = X-dim (mm) */
47 /* [2] = Y-dim (mm) */
48 /* [3] = Z-dim (mm) */
49 /* [4] = t-dim (ms) */
50 /* ... */
51 float funused[6];
52 float compressed;
53 float verified;
54 Int32 glmax,glmin;
55 } MDC_ANLZ_IMAGE_DIMS;
56 #define MDC_ANLZ_IMD_SIZE 108
58 typedef struct Data_History_t{
60 char descrip[80];
61 char aux_file[24];
62 char orient; /* patient orientation */
63 /* 0 = transverse unflipped */
64 /* 1 = coronal unflipped */
65 /* 2 = sagittal unflipped */
66 /* 3 = transverse flipped */
67 /* 4 = coronal flipped */
68 /* 5 = sagittal flipped */
69 char originator[10];
71 char generated[10];
72 char scannum[10];
73 char patient_id[10];
74 char exp_date[10];
75 char exp_time[10];
76 char hist_un0[3];
77 Int32 views;
78 Int32 vols_added;
79 Int32 start_field;
80 Int32 field_skip;
81 Int32 omax, omin;
82 Int32 smax, smin;
83 } MDC_ANLZ_DATA_HIST;
84 #define MDC_ANLZ_DH_SIZE 200
86 ---------------------------------------------------------------------------
88 The structures are defined in the order as they should be found in the file.
90 The Data_History header is not obliged. The SPM Analyze format, intended for
91 the SPM software, differs a little from the normal Analyze format.
92 What does the format support or not support:
94 ===========================================================================
96 Item Supported Not Supported
97 ===========================================================================
98 Color Map : grayscale -
99 File Endian : little & big -
100 Pixeltypes : 1-bit, Uint8, Int16, Int32 Int8,Uint16,Uint32
101 float, double, (complex) Int64,Uint64
102 ===========================================================================
103 Scaling factors : quantify & calibrate factors/image are NOT supported
104 ---------------------------------------------------------------------------
105 Dimensions/Image : different dimensions for each image are NOT supported
106 ---------------------------------------------------------------------------
107 Pixeltypes/Image : different pixeltypes for each image are NOT supported
108 ---------------------------------------------------------------------------
109 SPM remarks : 1) imd.funused[0] = the offset
110 2) imd.funused[1] = one global scaling factor
111 3) (Int16)dh.originator[0...1] \
112 (Int16)dh.originator[2...3] } = origin (X, Y, Z)
113 (Int16)dh.originator[4...5] /
114 ===========================================================================
115
117 A note about the image (patient) orientation in SPM:
118 X-axis
120 increases from leftside (hand) to rightside (hand).
121 Y-axis
123 increases from posterior (back) to anterior (front).
124 Z-axis
126 increases from inferior (feet) to superior (head).
127
129 /usr/local/xmedcon/source/m-anlz.h The header file.
130 /usr/local/xmedcon/source/m-anlz.c The source file.
131
133 medcon(1), xmedcon(1), xmedcon-config(1)
134 m-acr(4), m-gif(4), m-inw(4), m-intf(4), m-ecat(4)
136 medcon(3)
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140 (X)MedCon project was originally written by Erik Nolf (eNlf) for the former
141 PET-Centre at Ghent University (Belgium).
142 e-mail: enlf-at-users.sourceforge.net www: http://xmedcon.sourceforge.net
144 M-ANLZ(4)