Timeline for implementation:
• July 2019 – Proposed values for codes published in Medicare Physician Fee Schedule Proposed
• August 2019 – AMA CPT Manual for 2020 becomes available with the full description of the
codes and CPT introductory language.
• November 2019 – Medicare Physician Fee Schedule Final Rule published with final values
• January 1, 2020 – New codes take effect
ICS-CERT issued an advisory following the discovery of 8 vulnerabilities in Natus NeuroWorks v8.
If the vulnerabilities are exploited they can allow a malicious hacker to crash the vulnerable device or trigger a buffer overflow condition that would allow remote code execution.
You should update your version of Neuroworks to 8.5 GMA 3 or later. It is available free of charge for users of NeuroWorks/SleepWorks Version 8.0, 8.1, 8.4, or 8.5. The Natus Neuro technical support department should be contacted for further information or download here.
Localization of intracranial electrodes is critical for invasive epilepsy evaluations and to confirm or not confirm the epileptic zone hypothesis. Various methods exist using various open-source and commercial software. Here is one method using some latest updates to the Brainstorm software.
- Pre-implantation T1 without contrast 1mm 3D volume scan
- Post-implantation CT scan without contrast 1mm 3D volume scan
Assuming you are already familiar with Brainstorm and have already created anatomy files using Freesurfer:
Choose Freesurfer folder
Change file type to Freesurfer
Convert CT to .nii.gz first with MRIcroGL (drag and drop)
FreeSurfer is an open source software suite for extracting the cortex from an MRI, and more.
Download Freesurfer here.
Register for a license key here.
Follow the installation instructions. Create a license.txt file, copy the key into it and save in the freesurfer folder.
Sourcing FreeSurfer Mac from terminal:
$> export FREESURFER_HOME=/Applications/freesurfer $> source $FREESURFER_HOME/SetUpFreeSurfer.sh
Navigate to your DICOM folder in terminal.
Run the recon-all command
recon-all -i file.dcm -subject NAME -all
Where file.dcm should be one of the DICOM files in your folder (e.g. 00000001.dcm or just 00000001). Freesurfer will automatically get the rest of the images in the series.
After the -subject argument NAME should be the name you want to call the study/subject. There will be a folder created with this name in the Applications/FreeSurfer/Subjects folder.
The process can take 10-20 hours, for me, it took ~10hrs on my 2011 core i5 Macbook Pro.
Once it is done you can proceed to import your Freesurfer anatomy into Brainstorm. See the tutorial here.
Great tutorial on how to digitize electrode positions with the Polhemus Fastrak with Brainstorm here.