| Geant4 Cross Reference |
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2 Geant4 - ICRP110_HumanPhan 2 Geant4 - ICRP110_HumanPhantoms Example
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4 4
5 The ICRP110_HumanPhantoms example is developed 5 The ICRP110_HumanPhantoms example is developed and mantained by Susanna Guatelli, Matthew Large and Alessandra Malaroda,
6 Centre For Medical Radiation Physics (CMRP), U 6 Centre For Medical Radiation Physics (CMRP), University of Wollongong, NSW, Australia, and John Allison, Geant4 Associates International
7 and University of Manchester, UK. 7 and University of Manchester, UK.
8 8
9 Contacts: 9 Contacts:
10 - susanna@uow.edu.au 10 - susanna@uow.edu.au
11 - mjl970@uowmail.edu.au 11 - mjl970@uowmail.edu.au
12 - malaroda@uow.edu.au 12 - malaroda@uow.edu.au
13 - John.Allison@g4ai.org 13 - John.Allison@g4ai.org
14 14
15 The example is based on the extended/medical/D 15 The example is based on the extended/medical/DICOM example
16 16
17 The authors acknowledge that this application 17 The authors acknowledge that this application of the ICRP110 human phantoms have been implemented in Geant4 with the kind permission of
18 the International Commission on Radiological P 18 the International Commission on Radiological Protection (ICRP).
19 19
20 ---------------------------------------------- 20 ----------------------------------------------------------------------------------------------------
21 --------------------------------------> Introd 21 --------------------------------------> Introduction <----------------------------------------------
22 ---------------------------------------------- 22 ----------------------------------------------------------------------------------------------------
23 23
24 This application models the ICRP110 reference 24 This application models the ICRP110 reference computational human phantoms [1] in a Geant4 simulation and calculates
25 the dose in individual voxels and in entire or 25 the dose in individual voxels and in entire organs.
26 26
27 The human male phantom, provided kindly by the 27 The human male phantom, provided kindly by the ICRP, is created from a whole-body clinical CT image set of a 38yr old
28 individual with height 176 cm and mass approxi 28 individual with height 176 cm and mass approximately 70 kg. Similarly, the human female phantom was created from a set of
29 whole body CT images of a 43yr old individual 29 whole body CT images of a 43yr old individual with height 163 cm and weight 60 kg. The CT scans were acquired with both
30 individuals laying supine and with arms restin 30 individuals laying supine and with arms resting parallel alongside the body. Both sets of CT data were then scaled to
31 closely approximate the ICRP adult Reference M 31 closely approximate the ICRP adult Reference Male and Reference Female, defined in previous ICRP publications [2, 3].
32 32
33 [1] HG Menzel, C Clement, and P DeLuca. ICRP 33 [1] HG Menzel, C Clement, and P DeLuca. ICRP publication 110. "Realistic reference phantoms:
34 an icrp/icru joint effort: A report of adult 34 an icrp/icru joint effort: A report of adult reference computational phantoms", Annals of the
35 ICRP, 39(2):1, 2009. URL: http://www.icrp.or 35 ICRP, 39(2):1, 2009. URL: http://www.icrp.org/publication.asp?id=icrp%20publication%20110.
36 36
37 [2] Valetin J 2002 Basic anatomical and phys 37 [2] Valetin J 2002 Basic anatomical and physiological data for use in radiological protection:
38 reference values: ICRP Publication 89 Ann. I 38 reference values: ICRP Publication 89 Ann. ICRP vol. 32 (Oxford: Elsevier) pp 1-277.
39 39
40 [3] Valetin J 2007 The 2007 recommendations 40 [3] Valetin J 2007 The 2007 recommendations of the international commission on radiological
41 protection Ann. ICRP vol 37 (Oxford: Elsevie 41 protection Ann. ICRP vol 37 (Oxford: Elsevier) pp 1-133.
42 42
43 The table below summarises the key features of 43 The table below summarises the key features of the male and female voxelised human phantoms.
44 44
45 PROPERTY AM AF 45 PROPERTY AM AF
46 _____________________________________ 46 _____________________________________
47 Height (m) 1.76 1.63 47 Height (m) 1.76 1.63
48 48
49 Mass(Kg) 73.0 60.0 49 Mass(Kg) 73.0 60.0
50 50
51 Slice Thickness(mm) 8.0 4.84 51 Slice Thickness(mm) 8.0 4.84
52 52
53 Voxel in-plane- 2.137 1.775 53 Voxel in-plane- 2.137 1.775
54 -resolution (mm) 54 -resolution (mm)
55 55
56 Voxels along x 254 299 56 Voxels along x 254 299
57 (i.e. columns) 57 (i.e. columns)
58 58
59 Voxels along y 127 137 59 Voxels along y 127 137
60 (i.e. rows) 60 (i.e. rows)
61 61
62 Number of Slices 222 348 62 Number of Slices 222 348
63 (i.e. along z) 63 (i.e. along z)
64 ______________________________________ 64 ______________________________________
65 65
66 ---------------------------------------------- 66 ----------------------------------------------------------------------------------------------------
67 ------------------------------> Application Su 67 ------------------------------> Application Sub-Folder Structure <----------------------------------
68 ---------------------------------------------- 68 ----------------------------------------------------------------------------------------------------
69 69
70 - '/src': where the source .cc files are stor 70 - '/src': where the source .cc files are stored
71 71
72 - '/include': where header .hh files are stor 72 - '/include': where header .hh files are stored
73 73
74 - '/ICRPdata': where the phantom data files ( 74 - '/ICRPdata': where the phantom data files (*.dat) and slice files are stored.
75 It is downloaded automatically from URL https 75 It is downloaded automatically from URL https://cern.ch/geant4-data/datasets/examples/advanced/ICRP110Phantoms/ICRPdata.tar.gz
76 during the configuration via cmake. 76 during the configuration via cmake.
77 77
78 Phantom data files containing the voxelisatio 78 Phantom data files containing the voxelisation of each phantom, as well as files
79 containing the definitions of the phantom org 79 containing the definitions of the phantom organs and materials used within geant4
80 code can be found in the folder /ICRPdata. 80 code can be found in the folder /ICRPdata.
81 81
82 All data files used for this phantom were obt 82 All data files used for this phantom were obtained from the ICRP's website on publication 110 under "Supplementary Data"
83 - https://www.icrp.org/publication.asp 83 - https://www.icrp.org/publication.asp?id=ICRP%20Publication%20110.
84 84
85 ---------------------------------------------- 85 ----------------------------------------------------------------------------------------------------
86 ----------------------------------> ICRP110Pha 86 ----------------------------------> ICRP110Phantoms Data <------------------------------------------
87 ---------------------------------------------- 87 ----------------------------------------------------------------------------------------------------
88 88
89 Within the '/ICRPdata' directory, the followin 89 Within the '/ICRPdata' directory, the following sub-directories are contained:
90 90
91 -> /ICRPdata/ : conta 91 -> /ICRPdata/ : contains '*Data.dat' files which list the number of phantom slices to
92 simul 92 simulate and the order in which to stack the phantom slices.
93 93
94 -> /ICRPdata/ICRP110_g4dat/AM/ : conta 94 -> /ICRPdata/ICRP110_g4dat/AM/ : contains the individual male phantom slice files.
95 95
96 -> /ICRPdata/ICRP110_g4dat/AF/ : conta 96 -> /ICRPdata/ICRP110_g4dat/AF/ : contains the individual female phantom slice files.
97 97
98 -> /ICRPdata/ICRP110_g4dat/P110_data_V 98 -> /ICRPdata/ICRP110_g4dat/P110_data_V1.2
99 99
100 The final directory contains the raw ICRP110 p 100 The final directory contains the raw ICRP110 phantom data as obtained from the ICRP110 publication website [1];
101 5 files within folders for the AM and AF phant 101 5 files within folders for the AM and AF phantoms are given. These files are described as follows in the
102 supplementary data's included README file. 102 supplementary data's included README file.
103 103
104 The array of organ identification numbers (in 104 The array of organ identification numbers (in ASCII format); the file names are:
105 AM.dat 105 AM.dat
106 AF.dat 106 AF.dat
107 107
108 A list of individually segmented structures, 108 A list of individually segmented structures, their identification numbers, and assigned media (Appendix A in ICRP110); the file names are:
109 AM_organs.dat 109 AM_organs.dat
110 AF_organs.dat 110 AF_organs.dat
111 111
112 A list of the media, their elemental composi 112 A list of the media, their elemental compositions and densities (Appendix B in ICRP110);
113 the file names are: 113 the file names are:
114 AM_media.dat 114 AM_media.dat
115 AF_media.dat 115 AF_media.dat
116 116
117 The mass ratios of bone constituents (trabec 117 The mass ratios of bone constituents (trabecular bone, red and yellow bone marrow) in the spongiosa regions;
118 the file names are: 118 the file names are:
119 AM_spongiosa.dat 119 AM_spongiosa.dat
120 AF_spongiosa.dat 120 AF_spongiosa.dat
121 121
122 The mass ratios of blood in various body tis 122 The mass ratios of blood in various body tissues; the file names are:
123 AM_blood.dat 123 AM_blood.dat
124 AF_blood.dat 124 AF_blood.dat
125 125
126 The primary data files AM.dat and AF.dat conta 126 The primary data files AM.dat and AF.dat contain an array of organ identification numbers ranging from 0 to 141.
127 Each number respresents the organ associated w 127 Each number respresents the organ associated with each voxel within the phantom. Within these files, the organ IDs
128 are listed slice by slice, within each slice r 128 are listed slice by slice, within each slice row by row, within each row column by column. That means, the column
129 index changes fastest, then the row index, the 129 index changes fastest, then the row index, then the slice index - in other words, the phantom voxels first increase
130 along x, then along y and finally along z. Sli 130 along x, then along y and finally along z. Slice numbers increase from the toes up to the vertex of the body;
131 row numbers increase from front to back; and c 131 row numbers increase from front to back; and column numbers increase from right to left side.
132 132
133 For use in this application, the original AM.d 133 For use in this application, the original AM.dat and AF.dat files containing the organ identification numbers of
134 all voxels of the phantom were sub-divided int 134 all voxels of the phantom were sub-divided into many files with each representing a single phantom slice along z.
135 As such, each file represents a 2D phantom sli 135 As such, each file represents a 2D phantom slice containing x,y voxel positions and organ identification numbers
136 of each voxel. This allows for subsections of 136 of each voxel. This allows for subsections of the phantom to be simulated as required by the user, removing the
137 need to simulate the entire phantom every time 137 need to simulate the entire phantom every time when this may not nessecrily be needed by the user. This also will
138 allow for reductions in the simulation time de 138 allow for reductions in the simulation time depending on what portion of the total phantom is simulated by the user.
139 This feature was achieved via a code developed 139 This feature was achieved via a code developed by Dr Alessandra Malaroda, University of Wollongong, Australia in 2017.
140 140
141 The AM human phantom is voxelised in x,y,z wit 141 The AM human phantom is voxelised in x,y,z with 254 x 127 x 222 voxels with dimensions 2.137 x 2.137 x 8 mm.
142 The AF human phantom is voxelised in x,y,z wit 142 The AF human phantom is voxelised in x,y,z with 299 x 137 x 348 voxels with dimensions 1.775 x 1.775 x 4.84 mm.
143 143
144 ---------------------------------------------- 144 ----------------------------------------------------------------------------------------------------
145 ---------------------------------------> How t 145 ---------------------------------------> How to compile and run <-----------------------------------
146 ---------------------------------------------- 146 ----------------------------------------------------------------------------------------------------
147 147
148 - Create a build folder for the phantom run 148 - Create a build folder for the phantom run
149 % mkdir build/ 149 % mkdir build/
150 150
151 - Navigate to inside the build folder and init 151 - Navigate to inside the build folder and initialise Geant4
152 % cmake ../ 152 % cmake ../
153 153
154 The ICRP110 phantom data will be automatical 154 The ICRP110 phantom data will be automatically downloaded from https://cern.ch/geant4-data/datasets/examples/advanced/ICRP110Phantoms/ICRPdata.tar.gz
155 155
156 - Compile and link to generate the executable 156 - Compile and link to generate the executable (in your CMAKE build directory):
157 % make 157 % make
158 This should make two executables - ICRP110ph <<
159 158
160 - Execute the application in 'interactive' mod 159 - Execute the application in 'interactive' mode with visualization:
161 % ./ICRP110phantoms 160 % ./ICRP110phantoms
162 161
163 - Execute the "standalone" application in 'int <<
164 % ./ICRP110standalone <<
165 This allows you to visualise the phantom wit <<
166 Of course, you cannot run or visualise traje <<
167 <<
168 - Execute the application in 'batch' mode from 162 - Execute the application in 'batch' mode from macro files:
169 % ./ICRP110phantoms female_head.in 163 % ./ICRP110phantoms female_head.in
170 164
171 ----------------------------- 165 -----------------------------
172 AVAILABLE MACRO FILES 166 AVAILABLE MACRO FILES
173 ----------------------------- 167 -----------------------------
174 For the users convenience, macro files have be << 168 For the users convinience, macro files have been created which are designed to construct partial head
175 and trunk phantoms for both the male and femal 169 and trunk phantoms for both the male and female models. These macro files can be called upon in batch
176 mode when executing the application as specifi 170 mode when executing the application as specified above. If the user wishes to construct a completed/full
177 male or female phantom, the macros male.in and 171 male or female phantom, the macros male.in and female.in can be called upon, respectively.
178 172
179 - male_head.in/female_head.in : Creates a p 173 - male_head.in/female_head.in : Creates a partial head phantom for the male and female, respectively.
180 - male_trunk.in/female_trunk.in : Creates a p 174 - male_trunk.in/female_trunk.in : Creates a partial trunk phantom for the male and female, respectively.
181 - male.in : Creates ful 175 - male.in : Creates full male ICRP110 phantom. This can be modified along with 'ICRPdata/MaleData.dat'
182 if the user 176 if the user wishes to create their own custom partial phantom section.
183 - female.in : Creates ful 177 - female.in : Creates full female ICRP110 phantom. This can be modified along with
184 'ICRPdata/Fe 178 'ICRPdata/FemaleData.dat' if the user wishes to create their own custom partial phantom section.
185 - openGLVis.mac : macro for v 179 - openGLVis.mac : macro for visualisation with openGL.
186 - vis.mac (default) : Executed by 180 - vis.mac (default) : Executed by default when the simulation is run in 'interactive' mode.
187 - primary.mac : Contains th << 181 - primary.mac : Contains the definition of the primary radiation field.
188 182
189 At the very top of the various '.in' macro fil 183 At the very top of the various '.in' macro files (pre-initialization), there are a series of commands
190 which define the sex and section of the phanto 184 which define the sex and section of the phantom to create. These commands are listed below:
191 185
192 o /phantom/setPhantomSex <option> : Passes s 186 o /phantom/setPhantomSex <option> : Passes sex of phantom to Detector Construction
193 o /phantom/setScoreWriterSex <option> : Pass 187 o /phantom/setScoreWriterSex <option> : Passes sex of phantom to User Score Writer
194 188
195 o /phantom/setPhantomSection <option> : Pass 189 o /phantom/setPhantomSection <option> : Passes section of phantom to Detector Construction
196 o /phantom/setScoreWriterSection <option> P 190 o /phantom/setScoreWriterSection <option> Passes section of phantom to User Score Writer
197 191
198 Available options for the first 2 commands are 192 Available options for the first 2 commands are: male or female.
199 Avalable options for the last 2 commands are: 193 Avalable options for the last 2 commands are: head, trunk or full.
200 194
201 In the event that the macro called upon by the 195 In the event that the macro called upon by the user when executing the application in 'batch' mode
202 does not contain these commands (default case) 196 does not contain these commands (default case), the application sets phantom sex to female and the section as the head.
203 197
204 WARNING: the phantom model can be chosen only 198 WARNING: the phantom model can be chosen only in the initialization phase of the simulation!!!
205 It cannot be changed during the run session. T 199 It cannot be changed during the run session. This feature will be implemented in the next future.
206 200
207 ---------------------------------------------- 201 ----------------------------------------------------------------------------------------------------
208 ----------------------------------> Creating a 202 ----------------------------------> Creating a Custom Phantom <------------------------------------
209 ---------------------------------------------- 203 ----------------------------------------------------------------------------------------------------
210 204
211 If the user wishes to construct a customised s 205 If the user wishes to construct a customised section of the phantom (i.e. a single slice, the legs, etc),
212 he/she has to create a specific macro or edit 206 he/she has to create a specific macro or edit the ones provided. The recommended method for a custom male
213 phantom is outlined as follows. 207 phantom is outlined as follows.
214 208
215 The user should edit the macro 'male.in' and t 209 The user should edit the macro 'male.in' and the data file
216 'MaleData.dat'. Firstly, in 'FemaleData.dat', 210 'MaleData.dat'. Firstly, in 'FemaleData.dat', there are 2 simple ways in which the user can
217 select a custom range of phantom slices to sim 211 select a custom range of phantom slices to simulate:
218 212
219 1. The very first entry of each Data.dat indic 213 1. The very first entry of each Data.dat indicates how many slices to simulate.
220 Changing this number will determine the num 214 Changing this number will determine the number of slices to construct.
221 215
222 2. Further down in the Data.dat files (beginni 216 2. Further down in the Data.dat files (beginning at line 61) is the name of the first slice to simulate, followed
223 by successive slices. Changing the slice fi 217 by successive slices. Changing the slice file orders here will allow various subsections of the human
224 phantom to be simulated. As an indication t 218 phantom to be simulated. As an indication the following phantom subsections have been identified for the
225 male phantom below. 219 male phantom below.
226 220
227 --> AM_Slice1.g4dat to AM_Slice20.g4dat: F 221 --> AM_Slice1.g4dat to AM_Slice20.g4dat: Feet to ankles
228 222
229 --> AM_Slice21.g4dat to AM_Slice121.g4dat: 223 --> AM_Slice21.g4dat to AM_Slice121.g4dat: Ankles to hips
230 224
231 --> AM_Slice169.g4dat: Single chest slice 225 --> AM_Slice169.g4dat: Single chest slice with good visualisation
232 of lungs, ribs, hea 226 of lungs, ribs, heart.
233 227
234 --> AM_Slice182.g4dat to AM_Slice222.g4dat 228 --> AM_Slice182.g4dat to AM_Slice222.g4dat: Neck and Head
235 229
236 NOTE: o Always order phantom slices beg 230 NOTE: o Always order phantom slices beginning with the lowest number and increasing
237 in slice number going down the 231 in slice number going down the .dat files.
238 o Always use consecutive/adjacent 232 o Always use consecutive/adjacent slices when simulating multiple slices.
239 o The default number of slices fo 233 o The default number of slices for both male and female phantoms is set to 10
240 and starts at the feet of each 234 and starts at the feet of each phantom.
241 235
242 Once the user customises the MaleData.dat/Fema 236 Once the user customises the MaleData.dat/FemaleData.dat (for example starting from the full phantoms macros),
243 he/she has also to fix appropriately the scori 237 he/she has also to fix appropriately the scoring mesh in male.in/female.in.
244 238
245 ---------------------------------------------- 239 ----------------------------------------------------------------------------------------------------
246 ------------------------------> Scoring Mesh a 240 ------------------------------> Scoring Mesh and the User Score Writer <----------------------------
247 ---------------------------------------------- 241 ----------------------------------------------------------------------------------------------------
248 242
249 The macro primary.mac defines the radiation be 243 The macro primary.mac defines the radiation beam type, energy, direction and geometry. The UI commands of the
250 General Particle Source should be used to chan 244 General Particle Source should be used to change the radiation field. The macros male.in and female.in contain
251 the /run/beamOn command and can call upon the 245 the /run/beamOn command and can call upon the radiation beam definition through the UI command
252 '/control/execute primary.mac'. 246 '/control/execute primary.mac'.
253 247
254 Within male.in and female.in, a scoring mesh i 248 Within male.in and female.in, a scoring mesh is defined which records the dose deposition within each individual
255 phantom voxel. The size of the scoring mesh is 249 phantom voxel. The size of the scoring mesh is defined in line 54 of the male.in/female.in files, and must be defined
256 to match the constructed phantom dimensions (w 250 to match the constructed phantom dimensions (whole or partial) defined in the according '/ICRPdata/*Data.dat' file.
257 251
258 The mesh dimensions are defined as half-dimens 252 The mesh dimensions are defined as half-dimensions in x,y,z - meaning a defined scoring mesh x-dimension of 100mm will construct
259 a scoring mesh spanning from -100mm to +100mm 253 a scoring mesh spanning from -100mm to +100mm in the geometrical world in which the phantom lies. Furthermore, for the completed
260 male phantom which has dimensions along x,y,z 254 male phantom which has dimensions along x,y,z of 542.798 x 271.399 x 1776 mm, the scoring mesh half-dimensions should be defined
261 as 271.399 x 135.6995 x 888. mm. The number of 255 as 271.399 x 135.6995 x 888. mm. The number of bins or divisions to segment the mesh into is then defined in line 51. These
262 should match the number of phantom voxels in x 256 should match the number of phantom voxels in x,y,z which are defined in the MaleData.dat and FemaleData.dat files in the '/ICRPdata'
263 directory. 257 directory.
264 258
265 If the user edits the MaleData.dat or FemaleDa 259 If the user edits the MaleData.dat or FemaleData.dat files to change the number of z-slices simulated in a run, they must also edit
266 the scoring mesh dimensions and number of bins 260 the scoring mesh dimensions and number of bins to ensure it correctly scores their defined phantom. To do so, the user will typically
267 only have to edit lines 54 and 55 of the male. 261 only have to edit lines 54 and 55 of the male.in or female.in macro files.
268 262
269 After completion of a simulation run, the phan 263 After completion of a simulation run, the phantom mesh records the deposited dose in each phantom voxel and outputs the data to a text file named
270 "PhantomMesh_Dose.txt". This text file lists t 264 "PhantomMesh_Dose.txt". This text file lists the x,y,z positional number of the voxel in the phantom and the dose recorded within that voxel (in Gy).
271 265
272 The output PhantomMesh_Dose.txt file is create 266 The output PhantomMesh_Dose.txt file is created by the User Score Writer class defined in the source code ICRP110UserScoreWriter.cc. In the same class the dose
273 in the voxels is analysed and associated to or 267 in the voxels is analysed and associated to organs.
274 268
275 A final output file "ICRP.out" is then created 269 A final output file "ICRP.out" is then created which contains the total dose delivered to each organ.
276 270
277 ---------------------------------------------- 271 ----------------------------------------------------------------------------------------------------
278 ----------------------------------------> Furt 272 ----------------------------------------> Further Info <--------------------------------------------
279 ---------------------------------------------- 273 ----------------------------------------------------------------------------------------------------
280 274
281 -------> ColourMap.dat <-------- 275 -------> ColourMap.dat <--------
282 276
283 This file located in the build directory assig 277 This file located in the build directory assigns G4colours to the 53 phantom materials.
284 The user may edit these as they wish for visua 278 The user may edit these as they wish for visualistion purposes.
285 279
286 ----------> Physics <----------- 280 ----------> Physics <-----------
287 281
288 The QGSP_BIC_HP Physics List is adopted. The u 282 The QGSP_BIC_HP Physics List is adopted. The user may want to change the
289 cut of production of secondary particles. 283 cut of production of secondary particles.
290 284
291 -----> Primary particles <------ 285 -----> Primary particles <------
292 286
293 The G4 General Particle Source (gps) is used t 287 The G4 General Particle Source (gps) is used to generate primary radiation field.
294 Macro primary.mac contains the definition of t 288 Macro primary.mac contains the definition of the primary radiation field.