Freesurfer October 2019

freesurfer@nmr.mgh.harvard.edu

111 participants
180 discussions

(no subject)
by Daniel Callow 26 Oct '19

26 Oct '19

External Email - Use Caution Hello, I am trying to do a within-subject co-registration between b0 volumes and T1's for my subjects. This is an old dataset that does not have anything for correcting b0 inhomogeneities. The registration using --dti and normal parameters for bbregister led to "okay" within-subject registration. I am wondering if modifying the --dof (like 12) option for bbregister or applying some type of linear/nonlinear registration might improve the registration? Best, -- *Daniel Callow* *PhD Student, Neuroscience and Cognitive Science* Exercise for Brain Health Lab University of Maryland, College Park *ddcc2442(a)gmail.com <ddcc2442(a)gmail.com>* 443-254-6298

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Open Faculty Position in Psychology at the University of Nevada, Reno
by Stephanie Otto 25 Oct '19

25 Oct '19

External Email - Use Caution Greetings Freesurfer Group, I'm not sure if it is acceptable to post open positions here, but our department is currently seeking to fill an Assistant Professor position and we would be grateful if you could share this information with the Freesurfer community. Thanks in advance! The Department of Psychology at the University of Nevada, Reno, is seeking applications for a tenure-track Assistant/Associate Professor in Cognitive Neuroscience. The level will be determined by the Department and will be commensurate with the selected candidate’s experience, knowledge, skills, and abilities. We are particularly interested in candidates whose research includes advanced techniques in neuroimaging and/or computational approaches. The candidate’s area of research should complement the strengths of the department in visual and multisensory processing. Successful candidates will be expected to establish a nationally recognized, extramurally funded research program, train graduate students, and participate in undergraduate teaching. Competitive startup funds are available. Required Qualifications PhD in Neuroscience or related field; postdoctoral research experience. Preferred Qualifications A strong publication record; potential for strong teaching skills; expertise that complements and expands the research capacity of the department; the potential to develop a nationally-competitive research program. Compensation Grade Assistant Professor -- Rank II Associate Professor -- Rank III Total Compensation The total compensation package includes a negotiable competitive salary, moving allowance (if applicable), a rich retirement plan, health insurance options that include dental and vision, life insurance, long-term disability, along with many other benefits. Additionally, there is a grant-in-aid educational benefit for faculty and dependents. For more information, please visit: UNR Benefits Faculty Dual Career Assistance Program The University of Nevada, Reno recognizes the importance of addressing dual-career couples’ professional needs. We offer a dual career assistance program to newly hired faculty spouses/partners that provides resources and assists them to identify career opportunities in Northern Nevada. Dual Career Program Department Information The department contributes to both the undergraduate and graduate interdisciplinary training programs in Neuroscience (approximately 440 undergraduates and 35 doctoral students). The department has 32 tenure-ladder faculty, four teaching faculty, and a corps of administrative staff; it is home to the Psychology major (900 students) and graduate programs in Cognitive and Brain Sciences, Behavior Analysis, and Clinical Psychology (120 students across three programs). A wide array of resources for neuroimaging is provided through the Center for Integrative Neuroscience (an NIH COBRE award), including 3T fMRI, high-density EEG, fNIRS, and Adaptive Optics. The Center also houses a research core supporting applications of Virtual and Augmented Reality, and a core for Cellular and Molecular Imaging including confocal and 2-photon microscopy. Reno is located next to the Sierra Nevada near Lake Tahoe, and has been rated one of the best small cities in the US for outdoor recreation and overall quality of life. Contact Information Sharee Williams at (775) 682-8795 or shareew(a)unr.edu Required Attachment(s) Please attach the following documents to your application. 1) Resume/CV 2) Cover Letter 3) Contact information for five professional references 4) Statement of Research and Teaching Interests 5) Please write a brief statement (one page maximum) about how you would contribute toward our mission of creating a culturally inclusive environment in the role for which you are applying Best, Stephanie Otto Doctoral Candidate, Cognitive and Brain Sciences Program Department of Psychology, MSS 414/MS0296 University of Nevada, Reno sotto(a)nevada.unr.edu

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Thalamic subnuclei color table
by Crawford, Anna 25 Oct '19

25 Oct '19

External Email - Use Caution Hello, Just a quick question. We recently installed the new thalamus segmentation subroutine. It's really wonderful, and much promise to our work. I can't find a lookup table with the numerical labels from the FS output to the thalamic nuclei. The numbers around between 8103-8133 on the right, and 8203 and 8233 on the left. Can you point me in the right direction for this? For other FS segmented volumes I always use the following, but it doesn't include these thalamic subnuclei http://surfer.nmr.mgh.harvard.edu/fswiki/FsTutorial/AnatomicalROI/FreeSurfe… Thank you, Anna Please consider the environment before printing this e-mail Cleveland Clinic is currently ranked as the No. 2 hospital in the country by U.S. News & World Report (2017-2018). Visit us online at http://www.clevelandclinic.org for a complete listing of our services, staff and locations. Confidentiality Note: This message is intended for use only by the individual or entity to which it is addressed and may contain information that is privileged, confidential, and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. Thank you.

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Mri_mask producing only zeros
by Sims, Sara A (Campus) 24 Oct '19

24 Oct '19

External Email - Use Caution Freesurfers, I am trying to use mri_mask using surface overlays. I made a label into a volume and then into a surface with 1s inside the label and 0s outside the label. I want to make a connectivity map surface overlay with values only within my label overlay. However when I run it, it creates a surface overlay with only zeros. There is definitely values within the label surface overlay (I triple checked). Code I used: Mri_mask original_surface_overlay label_mask new_masked_output It doesn’t output any errors. Here is what it looks like in freeview: Original surface overlay (label is outlined in green) [cid:image001.png@01D5821A.1324B130] The label made into a surface overlay (same as the one shown in green above): [cid:image002.png@01D5821A.1324B130] But this is the output: all zeros even though there was data within the mask. [cid:image003.png@01D5821A.1324B130] Help! Sara A. Sims

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Mean p-value of uncorrected cluster in Qdec
by Lucia Batzu 24 Oct '19

24 Oct '19

External Email - Use Caution Dear Freesurfer Developers, I'm running a Qdec analysis in which I'm looking for correlations between cortical thickness and a continuous CSF measurement. I'm interested in a specific area in which a cluster of correlation pops up, but doesn't survive cluster-wise correction for multiple comparisons. The details of the cluster are the following: Contrast: 'rh-Avg-thickness-CSF_protein-Cor', 15fwhm, DOF: 61 ClusterNo: 1 Max: 3.1156 VtxMax: 122763 Size(mm2): 1247.98 TalX: 19.9 TalY: -46.6 TalZ: -9.0 NVtxs: 2022 Annotation: lingual I would like to know if there is a way to extract the mean p-value [or, better, -log10(p)] of the uncorrected cluster. Thank you very much in advance, Best, Lucia

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how to get the full name of cortical segmentation structures?
by chen 24 Oct '19

24 Oct '19

External Email - Use Caution Dear freesurfer experts, I want to know the full name of the cortical segmentation structures. The look up table cannot solve my question. For example, the full name of the rh_bankssts_volume or rh_parsopercularis_volume. Cheers, Chen

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Converting ROIs from MNI152 space to MNI305
by Barbour, Tracy,M.D. 24 Oct '19

24 Oct '19

Hello experts, I am trying to convert insula ROIs that are in MNI 152 2 mm space to MNI305 space. I will eventually this ROI for connectivity analysis. I ran mri_vol2vol: mri_vol2vol --mov $FREESURFER_HOME/subjects/fsaverage/mri/orig.mgz --targ /autofs/cluster/neuromod/Insula_ROIs/left/k10/cluster_1.nii.gz --reg $FREESURFER_HOME/subjects/fsaverage/mri.2mm/reg.2mm.mni152.dat --inv --o cluster_1.mni305.mgz When I visualize the results the converted ROI is more caudal than the original. What am I doing wrong? Tracy

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Re: [Freesurfer] Error in glmfit-sim cache
by Renew Andrade 24 Oct '19

24 Oct '19

External Email - Use Caution I have tried all the values it pinpoints to but none seem to work.

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Getting stats from stats files. rh.w-g.pct. asegstatsdiff
by Троицкий Антон Александ рович 24 Oct '19

24 Oct '19

External Email - Use Caution Dear free surfer developers, 1. I processed several items of data. And I have rh.w-g.pct file in my stats folders. How can I get process this file to get table reading file? I tried to use asegstats2table and aparcstats2table but it didn’t work. I tried to find appropriate script in $FREESUFER_HOME/bin folder. But it doesn’t help. Could you provide me with necessary information about getting of stats from rh.w-g.pct to table file like asegstats2table? 2. I try to execute asegstatsdiff script from the command line (Mac Os). There is a message appears «if: Expression Syntax.» In the header of this script the string «#! /bin/tcsh -f» is written. So, How I understand I need to use something else instead of bash, isn’t it? Best regards, Anton Troitskii.

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subcortical volume-based pet analysis
by miracle ozzoude 24 Oct '19

24 Oct '19

External Email - Use Caution Hello Experts, I do have couple questions about using mri_glmfit and mri_glmfit-sim for this analysis based on the tutorial page. https://surfer.nmr.mgh.harvard.edu/fswiki/PetSurfer 1) Do i have to add any other flags when using mri_glmfit for this analysis? mri_glmfit --y ${results_dir}/all.mgx.subctxgm.mni305.sm05.nii.gz --fsgd $pet_fsgd --C $matrix1 \ --mask ${SUBJECTS_DIR}/fsaverage/mri.2mm/subcort.mask.mgz --glmdir ${results_dir}/sub.pet.B6.glmdir 2) When correcting for multiple comparisons, should i use --2spaces or --3spaces? 3) I ran a paired ttest analysis using age as regressor of no interest for amyloid uptake. My contrast is "1 0" based on the tutorial https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis. How do i interpret the direction of contrast if I get a result from mri_glmfit-sim (see below)? This is because it doesn't have the Max column for surface based analysis # Cluster Size(n) Size(mm^3) MNIX MNIY MNIZ Max CWP CWPLow CWPHi 1 12709 101672.0 26.00 -69.00 -41.00 5.46844 0.01037 0.00798 0.01316 Right-Cerebellum-White-Matter Thank you. best, Paul

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Freesurfer October 2019