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Radiologist - Chest CT Annotation - AI Project (USA)

We are seeking radiologists with a chest/thoracic background to carry out structural annotation on de-identified chest CT scans, with a focus on spatial accuracy and consistency against detailed annotation guidelines.

United States
Hiring companyAptura
Application processN/ANo approved reviews yet
Work experienceN/ANo approved reviews yet

About the role

You will work asynchronously on a dedicated annotation platform, marking points, boxes and measurements on findings that have already been flagged upstream, to support the development of clinical AI imaging models.

This is a remote, flexible and short-term project.

This is structural markup project with no interpretation required. You will not be reading scans for diagnosis, judging malignancy, or making clinical decisions.

Why Join Us?

  • Flexible Work Arrangements: Part-time, remote and fully asynchronous.
  • Competitive Compensation: Hourly rate, paid weekly.
  • Professional Development: Hands-on experience in clinical AI development and medical imaging, shaping how AI systems localise and measure findings on CT.

Responsibilities

  • Click-point placement: Mark specific coordinates on a scan, such as the centre of a nodule.
  • Bounding boxes: Draw boxes around defined regions of interest, such as a flagged lesion.
  • Simple measurements: Record diameter, or distance between two marked points, on segmentations or polygons already drawn.
  • Guideline application: Work to an annotation guideline covering placement conventions, boundary definitions and measurement rules, applied consistently across a large volume of studies.
  • Edge case handling: Flag ambiguous cases with a short rationale so guidance can be refined.

Experience and education

  • Registration: Registered radiologist in your country of practice with active license.
  • Experience: 3–10 years' experience in radiology, with a chest/thoracic focus.
  • Knowledge: Strong grounding in thoracic anatomy and cross-sectional CT.
  • Attention to detail: Proven accuracy and consistency in image review or measurement work.
  • Technical proficiency: Comfortable using structured annotation tools and digital platforms.
  • Prior imaging annotation experience is an advantage but not required.

Language requirements

  • Language: Native or near-native written English.

Eligibility

Work arrangement: Fully remote

Eligible countries: United States

  • You will have the right to work in your country of residence.
  • You will work as an independent contractor.
More about the hiring companyAptura
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