cti-logoTM
 

 

NSLS Brookhaven Illinois Argonne Berkeley Cornell Stanford SRC Madison NIST synchrotron light radiation Siemens GE Hitachi Rapiscan FEI Carl Zeiss

Image Acquisition, Reconstruction, and Presentation
  for 3-D Computer Tomography (CT)
 
elecelectron beam failure analysis interventional angiography cryo em  failure analysis interventional angiography cryo em TEM

numerical quantitative statistical quantum efficiencient diagnostic residuals Bayes Bayesian Kalman filter density estimate

xray x-ray failure analysis medical systems MRI SPECT microanalysis TEM medical systems technologies
SIRT ART MENT Maximum Entropy MAP Maximum A Posteriori ML Maximum Likelihood

Cyber Technology, Inc.

projection fast limited scan view reconstruction nonlinear iterative constrained
transmission electron beam missing wedge cardiac cardiovascular electron microscopy dose reduction optimization clinical radiology ct scan


Image Acquisition, Reconstruction, and Presentation

DOWN-LOADABLE DATA SETS

3-D Reconstruction 2008-01-10 from 85 Projections
A3_Os_ser4a: tom_5_89

Quality Control Display: Original versus Re-Projection of the Reconstructed Model and Model Residuals

Note: The mismatches indicated by the residuals at #5 and #85 indicate:
 1. the logarithmic scaling constants are not correct (slow waves in the residuals)
2. the shrinking of the sample thickness is not fully corrected by the current regression model
of the beads (off-center patterns of the beads)

Original (trimmed at 4-sigma level) Re-Projected (trimmed at 4-sigma level) Residual (trimmed at 4-sigma level)
Projection #5 Org_05 Pred_05 Res_05
Projection #45 Org_45 Pred_45 Res_05
Projection #50 Org_50 Pred_50 Res_50
Projection #85 Org_85 Pred_85 Res_85

_________________________________________________________________________________________________________________________________

3-D Reconstruction 2008-02-14 from 172 Projections
Note: Double-Tilt, High Density is Black on IMOD
A3_Os_ser4a+b: tom_5_190
_________________________________________________________________________________________________________________________________

3-D Reconstruction 2008-02-21 from 190 Projections (ca. +/- 71 degree range in both tilts)
Note: Double-Tilt,  Zero-Density is Black on IMOD, 3-rd order Polynomial
A3_Os_ser4a+b: tom_0_94_100_194_blk
_______________________________________________________________________________________________________________________________


Original (trimmed at 4-sigma level) Re-Projected (trimmed at 4-sigma level) Residual (trimmed at 4 sig)
Projection #46 at
(0,0) deg
ORG_TAPER_TRIM_46 PROJ_PRE_TRIM_46 PROJ_RES_TRIM_46

3-D Reconstruction 2008-05-21 from 166 Projections (ca. +/- 60
in A-series and +/- 70 in B-series)
Note: Double-Tilt,  Zero-Density is Black on IMOD, 4-th order Polynomial
A3_Os_ser4a+b: tom_05_80_105_190_blk
_______________________________________________________________________________________________________________________________

3-D Reconstruction 2008-05-03 from 49 Projections (+/- 72 degree range, 3 increments)
Note: Single Tilt, some 100 cubes, each 6x6x6 voxels, x/y/z-axes new standard, base-density removed
Maria's Simulation: tom_0_48_3

3-D Reconstruction 2008-05-01 from 3 Projections (-72, 0, 72 degrees; subset of above data, 72 increments)
Note: Single Tilt, some 100 cubes, each 6x6x6 voxels, base-density removed

Maria's Simulation: tom_0_48_72


_______________________________________________________________________________________________________________________________

Original (not trimmed) Re-Projected (not trimmed) Residual (not trimmed)
Projection #24, 0 deg raw predicted redidual

3-D Reconstruction 2008-05-15 from 49 Projections (+/-72 range with 3 increments
)
Note: Single Tilt, some 100 cubes, each 6x6x6 voxels, with base density, density up-scaling factor is 200
estimated background density is 0.80, estimated cube density is ca. 5.0
Maria's Simulation: tom_0_48_3
_______________________________________________________________________________________________________________________________


Origina Projection Data (Windowed)Predicted Projection DataResidual Projection Data
Projection
at -60 deg
ORG at -60 degPRED -60 degRESID at -60 deg
Projection
at 0 deg
ORG at 0 degPRED at 0 degRESID at 0 deg
Projection
at 60 deg
ORG at 60 degPRED at 60 degRESID at 60 deg

Above images are a selected from a 9-View Reconstruction of 1024x1024 pixel projections (half original resolution).
The apparent vertical  "edges"  within the -60 and +60 deg images (ca. 30% from the dark border
s - relative to the displayed sample size)
arise from the artifactual "cutting" of the 3-D object space into a volume that is contained in all projections (edges of the sample slab).

Alice Dohnalkova's 9-View Reconstruction of Manganese Sample

Alice Dohnalkova's 17-view Reconstruction of Manganse Sample

Alice Dohnalkova's 41-view Reconstruction of Manganse Sample
_______________________________________________________________________________________________________________________________

Last Updated  2012-02-16

Recommended Resolution for Viewing is 1600x1200 pixels