pwighton

FreeBrowse Status Update

2026/03/04

New features since last update

• 2 URL parameters:
  • ?nvd=<url>: Open the niivue document at the specified URL
  • ?vol=<url>: Open the volume at the specified URL
• Initial support for Surfaces (WIP)
• 4d volume support
• UI element to manipulate label intent code

pwighton

[Free|Pet]Surfer by Example

Init FreeSurfer env

At the NIH

• Connect to Biowulf via NoMachine
• Launch a terminal on Biowulf
• Run:

pwighton

#!/usr/bin/env python3

import argparse
import pydicom

parser = argparse.ArgumentParser(description='Parse command line options')
parser.add_argument('input_file')
args = parser.parse_args()

dcm = pydicom.dcmread(args.input_file)

pwighton

Trying to make the atlas for Dorit on Nike

• On Nike
• With same parameters as original samseg atlas
• Using Koens trick stiffnes 1.0 -> 0.1 trick
• Using edgeCollapseEncouragmentFactor.txt=1.025 on restart
• Using full set of subjects

1. ssh to nike

pwighton

singularity run \
  --cleanenv \
  -B /autofs/cluster/gerenuk/pwighton/singularity-images/license.txt:/license.txt \
  -B /autofs/cluster/gerenuk/pwighton/fmriprep-singularity/ds003455:/data \
  --env FS_LICENSE='/license.txt' \
  /autofs/cluster/gerenuk/pwighton/singularity-images/fmriprep-20.2.0rc2.simg \
    /data \
    /data/derivatives2 \
 participant \

pwighton

#!/usr/bin/env python3

import argparse
import socket
import traceback

parser = argparse.ArgumentParser(description="Parse command line options")
parser.add_argument("port")
parser.add_argument("outfile")
args = parser.parse_args()

pwighton

An open Source QMS to facilitate translational research

Background: Cmet

• CorticoMetrics is working to bring FreeSurfer to the clinic
• To be used in the clinic, it needs to be FDA approved as a "Class II medical device"
• A Medical device must be developed under a QMS (Quality Management System)
• A QMS is a set of business processes and records that must be adhered to
  • "Design Review"
• "Validation"

pwighton

FreeSurfer 6.0 Installation Notes

Notes on how to install FreeSurfer 6.0 so that every command used during the course tutorials can be run. This fills in some missing details documented here

Download and install

• Follow instructions here to download and install FreeSurfer
• Download tutorial data from here and extract
• Patch FreeView (scroll to bottom of page)

pwighton

1. Description of the platform/product:

• name and version of the software: FreeSurfer 6.0
• free?: yes
• commercial?: no
• open source?: yes
• what DICOM library do you use?: DCMQI to write DICOM-SEG
• Description of the relevant features of the platform: Freesurfer's subcortical segmentation results can be converted to DICOM-SEG using fs-aseg.json that has been kindly provided by Emily Lindemer.
• are both single and multiple segments supported?: Yes, however Freesurfer's subcortical segmentation process assumes a mutually exclusive label set.
• do you support both BINARY and FRACTIONAL segmentation types? BINARY only.
• do you support compressed objects? I beleive itkimage2

pwighton

FROM amazonlinux:latest

# root does everything for now
# ---------------------------------------------------------------------
USER root

# For freesurfer
# ---------------------------------------------------------------------
# So that we can run `yum -y install git-lfs`
RUN curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.rpm.sh | bash