1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
unit nifti_types;
{$IFDEF FPC}
{$mode objfpc}{$ENDIF}{$H+}
interface
uses
Classes, SysUtils, define_types;
type
TNIFTIhdr = packed record //Next: analyze Format Header structure
HdrSz : longint; //MUST BE 348
Data_Type: array [1..10] of ansichar; //unused
db_name: array [1..18] of ansichar; //unused
extents: longint; //unused
session_error: smallint; //unused
regular: ansichar; ////unused: in Analyze 7.5 this must be 114
dim_info: byte; //MRI slice order
dim: array[0..7] of smallint; //Data array dimensions
intent_p1, intent_p2, intent_p3: single;
intent_code: smallint;
datatype: smallint;
bitpix: smallint;
slice_start: smallint;
pixdim: array[0..7]of single;
vox_offset: single;
scl_slope: single;//scaling slope
scl_inter: single;//scaling intercept
slice_end: smallint;
slice_code: byte; //e.g. ascending
xyzt_units: byte; //e.g. mm and sec
cal_max,cal_min: single; //unused
slice_duration: single; //time for one slice
toffset: single; //time axis to shift
glmax, glmin: longint; //UNUSED
descrip: array[1..80] of ansichar;
aux_file: array[1..24] of ansichar;
qform_code, sform_code: smallint;
quatern_b,quatern_c,quatern_d,
qoffset_x,qoffset_y,qoffset_z: single;
srow_x: array[0..3]of single;
srow_y: array[0..3]of single;
srow_z: array[0..3]of single;
intent_name: array[1..16] of ansichar;
magic: longint;
end; //TNIFTIhdr Header Structure
TAnalyzeHdrSection = packed record //Next: analyze Format Header structure
Pad: array [1..253] of byte;
originator: array [1..5] of smallint; (* 105 + 10 *)
end;//TAnalyzeHdrSection Structure
const
K_gzBytes_headerAndImageCompressed = -2;
K_gzBytes_onlyImageCompressed= -1;
K_gzBytes_headerAndImageUncompressed= 0;
//DataTypes
kDT_BINARY =1; // binary (1 bit/voxel)
kDT_UNSIGNED_CHAR =2; // unsigned char (8 bits/voxel)
kDT_UINT8 = kDT_UNSIGNED_CHAR;
kDT_SIGNED_SHORT =4; // signed short (16 bits/voxel)
kDT_INT16 = kDT_SIGNED_SHORT;
kDT_SIGNED_INT =8; // signed int (32 bits/voxel)
kDT_INT32 = kDT_SIGNED_INT;
kDT_FLOAT =16; // float (32 bits/voxel)
kDT_FLOAT32 = kDT_FLOAT;
kDT_COMPLEX =32; // complex (64 bits/voxel)
kDT_DOUBLE =64; // double (64 bits/voxel)
kDT_RGB =128; // RGB triple (24 bits/voxel)
kDT_INT8 =256; // signed char (8 bits)
kDT_UINT16 =512; // unsigned short (16 bits)
kDT_UINT32 =768; // unsigned int (32 bits)
kDT_INT64 =1024; // long long (64 bits)
kDT_UINT64 =1280; // unsigned long long (64 bits)
kDT_FLOAT128 =1536; // long double (128 bits)
kDT_COMPLEX128 =1792; // double pair (128 bits)
kDT_COMPLEX256 =2048; // long double pair (256 bits)
// slice_code values
kNIFTI_SLICE_SEQ_UNKNOWN = 0;
kNIFTI_SLICE_SEQ_INC = 1;
kNIFTI_SLICE_SEQ_DEC = 2;
kNIFTI_SLICE_ALT_INC = 3;
kNIFTI_SLICE_ALT_DEC = 4;
kNIFTI_SLICE_ALT_INC2 = 5; // 05 May 2005: RWCox
kNIFTI_SLICE_ALT_DEC2 = 6; // 05 May 2005: RWCox
kSliceOrderStr: array [kNIFTI_SLICE_SEQ_UNKNOWN..kNIFTI_SLICE_ALT_DEC2] of string =
('UNKNOWN','ascending','descending'
, 'interleaved ascending (1,3..,2,4...)', 'interleaved ascending (N,N-2...N-1,N-3...)'
, 'Siemens-even interleaved ascending (2,4..,1,3...)', 'Siemens-even interleaved ascending (N-1,N-3...N,N-2...)' );
//xyzt_units values: note 3bit space and 3bit time packed into single byte
kNIFTI_UNITS_UNKNOWN = 0;
kNIFTI_UNITS_METER = 1;
kNIFTI_UNITS_MM = 2;
kNIFTI_UNITS_MICRON = 3;
kNIFTI_UNITS_SEC = 8;
kNIFTI_UNITS_MSEC = 16;
kNIFTI_UNITS_USEC = 24;
kNIFTI_UNITS_HZ = 32;
kNIFTI_UNITS_PPM = 40;
//qform_code, sform_code values
kNIFTI_XFORM_UNKNOWN = 0;
kNIFTI_XFORM_SCANNER_ANAT = 1;//Scanner-based anatomical coordinates
kNIFTI_XFORM_ALIGNED_ANAT = 2; //Coordinates aligned to another file e.g. EPI coregistered to T1
kNIFTI_XFORM_TALAIRACH = 3; //Talairach-Tournoux Atlas; (0,0,0)=AC, etc.
kNIFTI_XFORM_MNI_152 = 4; //MNI 152 normalized coordinates
{$IFDEF ENDIAN_BIG}
//Magic values
kswapNIFTI_MAGIC_SEPARATE_HDR = $0031696E;//$6E693100;
kswapNIFTI_MAGIC_EMBEDDED_HDR = $00312B6E;//$6E2B3100;
kNIFTI_MAGIC_DCM = $0044434D;//DCM
//byte-swapped magic values
kNIFTI_MAGIC_SEPARATE_HDR = $6E693100;
kNIFTI_MAGIC_EMBEDDED_HDR = $6E2B3100;
{$ELSE}
//Magic values
kNIFTI_MAGIC_SEPARATE_HDR = $0031696E;//$6E693100;
kNIFTI_MAGIC_EMBEDDED_HDR = $00312B6E;//$6E2B3100;
kNIFTI_MAGIC_DCM = $0044434D;//DCM
//byte-swapped magic values
kswapNIFTI_MAGIC_SEPARATE_HDR = $6E693100;
kswapNIFTI_MAGIC_EMBEDDED_HDR = $6E2B3100;
{$ENDIF}
//Statistics Intention
kNIFTI_INTENT_NONE =0;
kNIFTI_INTENT_CORREL =2;
kNIFTI_INTENT_TTEST =3;
kNIFTI_INTENT_FTEST =4;
kNIFTI_INTENT_ZSCORE =5;
kNIFTI_INTENT_CHISQ =6;
kNIFTI_INTENT_BETA =7;
kNIFTI_INTENT_BINOM =8;
kNIFTI_INTENT_GAMMA =9;
kNIFTI_INTENT_POISSON =10;
kNIFTI_INTENT_NORMAL =11;
kNIFTI_INTENT_FTEST_NONC =12;
kNIFTI_INTENT_CHISQ_NONC =13;
kNIFTI_INTENT_LOGISTIC =14;
kNIFTI_INTENT_LAPLACE =15;
kNIFTI_INTENT_UNIFORM =16;
kNIFTI_INTENT_TTEST_NONC =17;
kNIFTI_INTENT_WEIBULL =18;
kNIFTI_INTENT_CHI =19;
kNIFTI_INTENT_INVGAUSS =20;
kNIFTI_INTENT_EXTVAL =21;
kNIFTI_INTENT_PVAL =22;
NIFTI_INTENT_LOGPVAL =23;
NIFTI_INTENT_LOG10PVAL =24;
kNIFTI_LAST_STATCODE = 24;//kNIFTI_INTENT_PVAL;
kNIFTI_INTENT_ESTIMATE =1001;
kNIFTI_FIRST_NONSTATCODE = kNIFTI_INTENT_ESTIMATE;
kNIFTI_INTENT_LABEL =1002;
kNIFTI_INTENT_NEURONAME =1003;
kNIFTI_INTENT_GENMATRIX =1004;
kNIFTI_INTENT_SYMMATRIX =1005;
kNIFTI_INTENT_DISPVECT =1006;
kNIFTI_INTENT_VECTOR =1007;
kNIFTI_INTENT_POINTSET =1008;
kNIFTI_INTENT_TRIANGLE =1009;
kNIFTI_INTENT_QUATERNION =1010;
implementation
end.
|
