Board-Certified Radiologist — CT/MRI Annotation

About OpenTrain

OpenTrain is the #1 platform for finding and building careers in AI training and data labeling. OpenTrain AI is the hiring and contracting organization for this role; creating an OpenTrain account is free and is how you apply and manage project work.

We connect medical professionals with paid annotation projects that directly shape how clinical imaging models are trained and evaluated.

What AI Training and Medical Annotation Involves

AI training is the human side of building clinical models: experts review and label examples so models learn to interpret images and make safe, accurate findings. This work is a chance to influence real clinical AI tools and help set their diagnostic behavior.

Medical annotation projects commonly use standard DICOM imaging, and tasks include marking structures, creating segmentation masks, and assigning diagnostic labels according to precise protocols.

The Role

OpenTrain AI seeks US-based, board-certified radiologists (MD) to join a radiology annotation project focused on CT and MRI DICOM studies. This is a contract position paid by the hour.

Work will consist of image-level and region-level annotation: polygon drawings, pixel-wise segmentation masks, and diagnostic label assignment following supplied annotation guidelines.

• Employment type: Contractor (contracting through OpenTrain AI).
• Pay: $150.00 USD per hour.
• Data type: Medical DICOM (CT and MRI studies).
• Label types required: Polygon annotations, segmentation masks, diagnostic labels.

What You'll Do

Perform careful, guideline-driven annotation of CT and MRI DICOM studies, producing polygon and segmentation annotations and assigning diagnostic labels where required.

• Identify and mark anatomical structures or lesions with polygon annotations.
• Create segmentation masks for regions of interest following the project's protocol.
• Assign diagnostic labels (e.g., presence/absence, severity categories) as specified in the annotation schema.
• Complete annotation records and any required metadata fields accurately for QA.

Requirements

All substantive role requirements come from the project description and must be met to be considered.

• Must be a US-based, board-certified radiologist (MD).
• Entry-level contributors are acceptable if they meet the board certification and MD requirements.
• Comfort reviewing CT and MRI DICOM studies and following detailed annotation protocols.

Who Should Apply

This project is designed for practicing or recently practicing radiologists who hold US board certification and an MD degree and who want to apply their clinical imaging expertise to improve AI.

If you meet the certification requirements and have experience interpreting CT and MRI, this contracting opportunity is a direct way to contribute to clinical AI development while earning hourly pay.

How It Works

OpenTrain AI manages contracting and payment for this project. Applicants create an OpenTrain account and submit their qualifications for review.

Selected radiologists will be contracted and paid at the posted hourly rate. Project-specific onboarding and annotation guidelines will be provided to contracted contributors.

• Payment type: Hourly (PAY_PER_HOUR) at $150 USD/hour.
• You must be US-based and board-certified (MD) to be eligible.
• This is contract work managed through OpenTrain AI.