Skip to content
View jdotc1's full-sized avatar

Block or report jdotc1

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Content in all repositories owned by your account will be closed.
Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
jdotc1/README.md

Jeff

Radiation oncologist and security researcher building and hardening medical imaging software for ARM64 on macOS.

Selected projects

Project When to use it Get started
SidecarCompare Review changes between MRI JSON sidecars with exact decimal comparisons, typed values, and documented unit annotations. Build the macOS app · Use the CLI
EntitlementDiff Compare declared app entitlements between builds and share saved comparisons that colleagues can reopen without the original apps. Download the macOS app
DICOM Anonymizer Pseudonymize supported DICOM metadata using numeric folder names as patient pseudonyms, with consistent UID remapping and a structured report. Install the macOS preview · Try the Python engine
Prism Native MCP Create supported native GraphPad Prism tables, descriptive statistics, graphs, and layouts through MCP. Install the version-pinned source preview

I also develop MacScope, a private binary-analysis and reverse-engineering workbench for macOS.

Selected open-source contributions

These examples link directly to upstream pull requests. Statuses were checked on 17 October 2026.

Contribution Focus Status
BIDScoin #302 Preserve literal image paths in local SynthStrip commands. Merged
deid #304 Default newly created pixel-cleaner output directories to owner-only permissions. Merged
dicom-validator #301 Escape filenames in HTML validation-report headings. Merged
Semgrep Rules #4085 Correct C# authorization-rule false positives for explicit authentication schemes. Open
pynetdicom #1099 Redact user-identity passwords in standard DICOM association logs. Open
PlatiPy #322 Strip a custom API-key header when redirects cross authentication boundaries. Open

Explore the contribution index →

Engineering approach

I trace how software handles untrusted input and sensitive data, develop focused patches, and verify behavior with synthetic regression cases. I document compatibility changes and validation limits, with particular attention to preserving scientific results and intended application behavior.

My work spans parser robustness, credential protection, file and archive handling, download integrity, and reliable builds for modern hardware.

Try, share, or contribute

Start with a project’s README for setup, synthetic examples, and current limitations. If a tool fits your work, try it, share the repository with a colleague, or open an issue with a reproducible example.

Research profile · ORCID

@jdotc1's activity is private