Hello,
if you look at
https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=SPM;27917fd7.1710
you will find a message that may be helpful. It will read out the mat
files and should regenerate the final measure Christian uses for his
ultimate assessment.
Cheers
Marko
Rutherford, Saige schrieb:
> Hello SPMers,
>
> I have a question regarding the quality measures created from CAT12
> segmentation. I am running quality checks on a large number of
> subjects, and want to load the cat_anat.mat file for each. I am a bit
> confused about which variable from this I should use. There are 2
> related to quality: quality measures and quality rating. I have found
> that NCR is noise quality, ICR bias quality, and IQR the weighted
> overall quality measure. But I am not sure how to interpret these values
> and why they are different in the quality measures vs. quality rating. I
> pasted below an example from a single subject. Thank you for any
> additional information you can provide.
>
> Respectfully,
> Saige
>
>>> load cat_anat
>>> whos
> Name Size Bytes Class Attributes
>
> S 1x1 54990 struct
>
>>> S
>
> S =
>
> filedata: [1x1 struct]
> parameter: [1x1 struct]
> qualitymeasures: [1x1 struct]
> qualityratings: [1x1 struct]
> software: [1x1 struct]
> subjectmeasures: [1x1 struct]
> subjectratings: [1x1 struct]
>
>>> S.subjectmeasures
>
> ans =
>
> WMH_abs: 0.8220
> WMH_rel: 0.0451
> WMH_WM_rel: 0.1407
> vol_abs_CGW: [330.5073 910.6644 578.6636 0.8220]
> vol_TIV: 1.8207e+03
> vol_rel_CGW: [0.1815 0.5002 0.3178 4.5149e-04]
>
>>> S.qualitymeasures
>
> ans =
>
> res_vx_vol: [1.3300 1.0000 1.0000]
> res_vx_voli: [1.0000 1.0000 1.0000]
> res_RMS: 1.1208
> res_BB: 0
> tissue_mn: [6.2890 16.1262 96.4566 175.7875]
> tissue_mnr: [0.0358 0.0917 0.5487 1]
> tissue_weighting: 'T1'
> tissue_std: [3.7370 25.2765 20.3886 17.3241]
> tissue_stdr: [0.0220 0.1491 0.1203 0.1022]
> contrast: 60.3084
> contrastr: 0.3431
> NCR: 0.2131
> ICR: 0.9913
>
>>> S.qualityratings
>
> ans =
>
> res_vx_vol: [2.6600 2.0000 2.0000]
> res_RMS: 2.2417
> res_BB: 0.5000
> tissue_mn: [8.6240 8.6240 8.6240 8.6240]
> tissue_std: [8.6240 8.6240 8.6240 8.6240]
> contrast: 0.5000
> contrastr: 2.9372
> NCR: 3.3908
> ICR: 2.9183
> IQR: 3.1233
>
> Saige E. Rutherford
>
> B.Sc. Biomedical Physics
>
> Research Assistant
>
> University of Michigan / Department of Psychiatry
>
>
> **********************************************************
> Electronic Mail is not secure, may not be read every day, and should not
> be used for urgent or sensitive issues
>
--
____________________________________________________
Prof. Dr. med. Marko Wilke
Facharzt für Kinder- und Jugendmedizin
Leiter, Experimentelle Pädiatrische Neurobildgebung
Oberarzt der Abteilung Neuropädiatrie
Universitäts-Kinderklinik
Marko Wilke, MD, PhD
Pediatrician
Head, Experimental Pediatric Neuroimaging
Consultant in Pediatric Neurology
University Children's Hospital
Hoppe-Seyler-Str. 1
D - 72076 Tübingen, Germany
Tel. +49 7071 29-83416
Fax +49 7071 29-5473
[log in to unmask]
http://www.medizin.uni-tuebingen.de/kinder/epn/
____________________________________________________
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