Alignment and Atlases

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-90-• Scaling to Talairach-Tournoux (+tlrc) coordinates: We now stretch/shrink the brain to fit the Talairach-Tournoux Atlasbrain size (sample TT Atlas pages shown below, just for fun)Most anterior to ACAC to PCPC to most posteriorMost inferior to ACAC to most superiorAC to left (or right)70 mm23 mm79 mm42 mm74 mm68 mmLength of cerebrum 172mmHeight of cerebrum116 mmWidth of cerebrum 136mm
-91-• Class example - Selecting the Talairach-Tournoux markers: There are 12 sub-regions to be scaled (3 A-P x 2 I-S x 2 L-R) To enable this, the transformed +acpc dataset gets its own set of markers➥ Click on the [AC-PC Aligned] button to view our volume in ac-pc coordinates➥ Select the [Define Markers] control panel A new set of six Talairach markers will appear:The Talairach markers appear onlywhen the AC-PC view is highlighted
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-4-Alignment tools in AFNI (continu
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-6-• Most image registration meth
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-8-• AFNI program 3dvolreg is for
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-11-Motion correction - caveats•
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-13-align_epi_anat.py• Goal: Want
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-15-Alignment Visualization in AFNI
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-17-Rat BrainsAlignmentof12hourMang
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-19-ATLASES
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-21-ATLAS DEFINITIONSTemplate Space
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-23-Registration To Standard Spaces
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-25-• Hidden in GUI - right click
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-27-• Stage 2: Scaling to Talaira
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-29-Automatic Talairach Transformat
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-31-Templates included with AFNITT_
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-33-Applying a transform to followe
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-35-@auto_tlrc Results are Comparab
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-37-Atlas/Template Spaces Differ In
Page 39 and 40: -39-From Space To SpaceTLRCMNIMNI-A
Page 41 and 42: -41-Atlases Distributed With AFNITT
Page 43 and 44: -43-Atlases Distributed With AFNI:A
Page 45 and 46: -45-[Where am I?]Shows you where yo
Page 47 and 48: -47-• whereami can report on the
Page 49 and 50: -49-The Future …• New atlases -
Page 51 and 52: -51-Neighborhoods in Space -Transfo
Page 53 and 54: -53-• Histogram cartoons:IIIJJJ
Page 55 and 56: -55-• grayscale underlay = J(x) =
Page 57 and 58: -57-• The future for 3dAllineate:
Page 59 and 60: -59-Appendix AInter-subject, inter-
Page 61 and 62: -61-• Anatomical coverage differs
Page 63 and 64: -63- Solutions to these problems:
Page 65 and 66: -65- Recipe above does not address
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Page 69 and 70: -69-Algorithmic Features• Goal is
Page 72 and 73: -72-Mutual Information• Entropy o
Page 74 and 75: -74-Hellinger Metric• MI can be t
Page 76 and 77: -76-3dAllineateʼs Symmetrical CR
Page 78 and 79: -78-Test: Monkey EPI - Anat6 DOFHEL
Page 80 and 81: -80-Test: Monkey EPI - Anat11 DOFHE
Page 82 and 83: -82-• Listen up folks, IMPORTANT
Page 84 and 85: -84- First goal is to mark top midd
Page 86 and 87: -86-• AC-PC Markers Cheat Sheet T
Page 88 and 89: -88-Notes on positioning AC/PC mark
Page 92 and 93: -92-Using the same methods as befor
Page 94 and 95: -94-• Automatic creation of “fo
Page 96 and 97: -96-“Warp on demand” viewing of
Page 98 and 99: -98-• Class example - Writing ana
Page 100 and 101: -100- Examination of time series fr
Page 102 and 103: -102-Real-Time 3D Image Registratio
Page 104: -104-• Screen capture fromexample
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