Medical Data Annotation
Done by Clinicians
Every dataset we annotate is handled by a medical professional with expertise in the relevant clinical field, then reviewed by a licensed specialist in that domain. Every annotator is employed with fair pay, proper training, and full transparency, that’s what makes the output reliable
60+
Completed Projects
95%
Accuracy
100%
Data Security
24/7
Real-time Live Monitoring
Medical AI annotation by professionals
Our Doctors in the Loop provide annotation services for medical data, including X-rays, MRI and CT scans, microscopic imagery, ultrasound videos, and other 2D, 3D and video data
Trusted by 100+
leading AI companies
Completed Projects
Annotation Types
Expert Medical Annotation Across Key Clinical Modalities
X-ray, CT, MRI, ultrasound, pathology, each dataset is matched to a specialist in that scan type, not a generalist.
2D Imaging
X-rays, pathology slides, retinal fundus, dermatology, mammography and histology. Annotated across bounding boxes, polygons, semantic segmentation and classification tasks.
3D Volumes
MRI, CT, CBCT dental scans and 3D ultrasound. Annotated with volume segmentation, multi-slice labeling, landmark annotation and 3D bounding volumes.
Video
Surgical footage, colonoscopy, echocardiography and laparoscopic recordings – annotated frame-by-frame with temporal segmentation, keypoints and instance tracking.
Unsure which annotation method fits your dataset? Our team will evaluate your data and provide a tailored recommendation before any commitment.
Our Specialists
We Match Your Dataset to the Right Specialist
Every project is assigned based on scan type, clinical domain, and annotator track record on similar datasets.
Radiology & Imaging
Radiologists
Radiology Technologists
Nuclear Medicine Specialists
Oncology & Pathology
Oncologists
Clinical Pathologists
Hematologists
Cardiology
Cardiologists
Vascular Surgeons
Surgery & Intervention
General Surgeons
Orthopaedic Surgeons
Laparoscopic Specialists
Ophthalmology & Neurology
Ophthalmologists
Neurologists
＋ Further Specialties
Dentists & Oral Surgeons
Gastroenterologists
Pediatricians
Urologists
Pharmacists
Why Doctors in the Loop
Built for Healthcare AI Where Annotation Accuracy Matters Most
01
Clinically Reviewed Annotation
The annotators working on your data follow guidelines built around your specific requirements
95% Precision
Ready for Regulatory Review
02
Unbiased & Diverse Data
Annotator diversity means your model doesn’t overfit to one clinical style or one geography.
Specialists across 6+ countries
03
A Social Mission Behind Every Annotation
Every annotator is a trained medical professional from conflict-affected communities, matched by specialty to your dataset.
Fair Work Conditions
UN SDG recognized
04
Scales With Your Team
Whether you’re piloting with 500 images or running a multi-thousand image production project, the review process and the annotator matching criteria stay the same.
60+ completed projects
Unsure which annotation method fits your dataset? Our team will evaluate your data and provide a tailored recommendation before any commitment.
Types of datasets
We have been working in the data annotation field for 5 years and we have expertise with different medical annotation tools, formats, and imagery modalities
2D images
From X-rays to pathology images, we are able to annotate any 2D modality, no matter what size
3D images
We support both MRI and CT scan labeling in 3D, using different tools for automation and optimization
Video
We perform full segmentation on ultrasound videos, surgery recordings, and colonoscopies
Why clients choose us
We are a specialized human-in-the-loop company which provides human input for AI systems. We know how hard it is to find certified medical professionals to train your models and how quickly costs can go out of hand
Social impact
By working with us, you are generating an impact on the lives of conflict-affected and displaced individuals
Certified professionals
We work with qualified medical professionals from a variety of specialties
Custom tooling
For each project, we choose the most suitable labeling platform and automation approach
Global diversity
You get access to a remote team of diverse medical professionals who can all contribute to your project
What Clients Say About Us
We work with academia, large enterprises, and fast growing startups which are all working to advance Artificial Intelligence in the Medical Field
Ethan Shaw
PointLab Expert Team
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Margaret Anderson
Mark Anthony
Senior Pathologist
Samantha Wood
Our group
We work through the following three entities in order to accomplish our mission to provide livelihoods to displaced and conflict-affected individuals
Through Doctors in the Loop, we deliver services specifically for the Medical AI industry
Through Humans in the Loop, we deliver human input for AI for all other computer vision use cases
Through the Humans in the Loop Foundation, we provide upskilling trainings and career support
Radiology & Imaging
Radiologists
Radiology Technologists
Nuclear Medicine Specialists