---
title: "Radiologist - Chest CT Annotation - AI Project (USA)"
company: "Aptura"
company_url: "https://www.remjobs.works/companies/aptura"
url: "https://www.remjobs.works/job/aptura-radiologist-chest-ct-annotation-ai-project-usa-de46593a-932a-480e-b29b-1b827598eb0a"
apply_url: "https://jobs.ashbyhq.com/aptura/ef80dbc9-a7d4-40a0-840f-fb2c1231fa79"
workplace: remote
location: "USA"
remote_scope: "USA"
employment_type: contract
seniority: mid
role: ai-machine-learning
region: united-states
date_posted: 2026-09-16T14:43:23.578Z
first_seen_by_remjobs: 2026-09-16T15:09:55.114Z
---

# Radiologist - Chest CT Annotation - AI Project (USA)

**Aptura** · USA

Apply: https://jobs.ashbyhq.com/aptura/ef80dbc9-a7d4-40a0-840f-fb2c1231fa79

## About the role

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.

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.

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

#### Qualifications:

- 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: Native or near-native written English.

#### Legal Status:

- You will have the right to work in your country of residence.

- You will work as an independent contractor.

#### 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.

---

Source: Aptura's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/aptura-radiologist-chest-ct-annotation-ai-project-usa-de46593a-932a-480e-b29b-1b827598eb0a