MEDICAL IMAGING PLATFORM

Designing a Modern Cloud Platform for Medical Imaging

Joining Medicai as the lead product designer meant tackling a complex challenge: replacing legacy imaging systems with a modern, cloud platform built for scale and compliance.

5x

revenue increase in the past two years

2.2+ million

imaging studies stored and shared on the platform

30,000+

medical professionals and patients using the platform

Radiologist using the Medicai platform

Summary

My Role

LEAD PRODUCT DESIGNER

WEB APP, MOBILE APP, WEBSITE

2020 - PRESENT

As the lead product designer starting in 2020, I owned end-to-end product design across the web app, mobile app, and marketing website. My work spanned initial research, defining system behavior, structuring complex workflows, and collaborating closely with engineering on implementation.

This included running research with clinicians and radiologists, creating the design system, and designing high-stakes multi-role workflows for medical imaging, collaboration, permissions, and data sharing. I also designed and built the marketing site in Webflow, which now serves over 80k monthly users.

Medicai became my primary focus at Atta Systems as we scaled it from MVP to an enterprise-grade product used across 70+ healthcare organizations.

The Problem

Healthcare providers relied on legacy imaging systems that offered very limited support for remote or distributed work. Even during COVID-19, many clinicians were still using CDs to share imaging files.

Doctors needed fast and dependable access to large studies from any device, with strict HIPAA compliance requirements and no tolerance for failure.

2020
2025
The evolution of Medicai from 2020 to 2025. The product was initially centered on enhancing patient-doctor collaboration. While some core concepts remained, the strategy eventually transitioned to developing a robust medical infrastructure solution, which defines Medicai today.

Process & Solution

1 — 
Understanding the Medical Mind

I spent time inside clinics and hospitals, interviewing doctors, administrators, and patients to understand their workflows and the real pain points behind imaging management.

One key insight stood out. Doctors were not resistant to new technology. They were cautious because previous system rollouts had failed or disrupted their work. Trust was the core issue, not the interface itself.

Most diagnostic mistakes happened during handoffs, so our design approach had to focus on reducing friction and preventing errors. The goal was to make the product feel reliable and familiar rather than impressive or flashy.

Medicai started as a simple imaging sharing platform for doctors and patients. As we learned more about the challenges in the ecosystem, it evolved into a full medical infrastructure-as-a-service (IAAS) solution.

Light
Dark
Cases, the main view in Medicai. Dark mode is not just a stylistic choice; it is essential for radiologists who work with medical imaging in dimly lit rooms.

2 — 
Mapping the Chaos

I mapped dozens of workflows across radiologists, physicians, patients, administrators, and technicians. Each role had different goals, constraints, and levels of technical comfort.

The existing processes were outdated and fragmented. Image sharing still depended on burned CDs, uploads required several steps across separate systems, and many clinicians resorted to email or WeTransfer with strict file size limits. This often resulted in low-quality or incomplete studies.

Missing or corrupted files sometimes led to repeat imaging, which meant unnecessary radiation exposure for patients. That was a serious risk we needed to eliminate through better system design.

A visual map of the fragmented imaging workflow. Understanding this complexity was essential for identifying the failure points Medicai needed to eliminate.

3 —
The Testing Methodology

I created a rapid iteration workflow that compressed long design cycles into short, focused loops. A single day of shadowing often revealed enough workflow detail to build wireframes and prototypes that could be tested the next day with real users.

This approach surfaced important insights, including the preference for dark interfaces. Radiologists work in dim reading rooms, and darker environments help them spot subtle contrast differences in scans.

Across the project, more than 50 interviews and testing sessions were conducted with both medical professionals and patients.

Case Details view in dark mode, showing in-depth information about the Patient, as well as a Timeline of the relevant actions, medical imaging and documents, including comments.
Quick access to options has always been a top priority for Medicai. Users can quickly adjust case status and priority, upload new files in patient cases, and leave comments, which is essential for radiologists who handle numerous cases daily.
Adding people and workspaces to a case is a unified experience, with options to invite by email, or by just sharing a link.

4 —
Designing For Trust

One of the core challenges was designing a zero-footprint DICOM viewer that could match the capability of dedicated desktop software.

To do this, I studied how radiologists actually read scans. They adjust window and level settings constantly, scroll through hundreds of slices, compare studies over time, and take frequent measurements. All of this needed to be fast and reliable in the browser.

Doctors also needed secure collaboration across devices, with access to patient files, comments, and supporting documents without compromising safety or compliance.

Medicai supports all of these workflows while remaining fully HIPAA and GDPR compliant. The platform is certified under ISO 27001 and ISO 9001, and it includes full HL7 support for interoperability.

Documents adapt to their context and are saved to the cloud, allowing for convenient access from any location.

5 —
Zero-Footprint Architecture

With Medicai, medical organizations can replace their traditional imaging stack with a true zero-footprint architecture where the PACS, VNA, and diagnostic viewer all run in a standard browser.

A plug-and-play DICOM node streams imaging data to the cloud within minutes, and the viewer renders CT, MRI, and X-ray series on any device without requiring VPNs, plugins, or local storage.

As an official Microsoft Partner running on the Azure healthcare cloud, Medicai now stores and manages more than 2.2 million imaging studies.

Loading DICOM Viewer…
The DICOM viewer implemented in the Medicai web and mobile apps. Go ahead, play around with it, I've turned off the lights for you.

6 —
Unified Experience

Radiologists get tools that focus on comparison workflows and quick access to essential actions, which lowers the learning curve and keeps them focused on reading cases rather than learning new interfaces.

Patients receive simple, one-click access with clear language and easy sharing through secure direct links.

An iOS and Android mobile app was also built alongside the web platform, giving medical professionals the ability to review patient files and imaging securely while on the move.

The Medicai mobile app offers a streamlined version of the platform, designed for effective medical imaging visualization and collaboration on the go.

7 — 
Design System

Building a design system for a healthcare platform required a careful balance between flexible components and strict compliance requirements.

The system was created in Figma and includes hundreds of components shaped around real clinical workflows, with each interaction validated in medical environments.

Design tokens maintain consistency across web and mobile while still allowing room for platform-specific optimizations when needed.

A quick glimpse at the Medicai Design System, which has been continuously refined and expanded over the years

8 —
Marketing Website at Enterprise Scale

Traditional healthcare sales depended heavily on cold outreach, but that model was no longer effective. The goal was to turn the website into the primary source of qualified leads.

I designed and implemented Medicai’s website in Webflow, and with the marketing team, we turned it into the main growth driver. The site now includes more than 40,000 pages through a programmatic SEO strategy, supports multilingual content, achieves PageSpeed scores above 90, and serves more than 80k unique visitors every month.

A custom CMS architecture manages complex medical taxonomies while remaining simple to update. Integrations with PostHog, Ahrefs, and Intercom support growth tracking, SEO improvements, and faster customer support.

A screenshot of the Medicai website, early 2023, before the redesignA screenshot of the Medicai website, Q2 2025, after the redesign
Early 2022
Q2 2025
The evolution of the Medicai Website — www.medicai.io — Q2 2022 vs. 3 years later, Q2 2025; Notice the shift in positioning.
Over the last two years, the website has experienced a steady increase in daily traffic, according to figures from Google Analytics
Mircea Popa, CEO, Medicai

"In medical imaging, trust is everything. From the early stages of Medicai, Călin played an important role in building that trust through thoughtful and consistent design. He spent real time understanding how clinicians work, and that level of insight helped the platform feel both innovative and familiar from day one.

The impact is clear in how people use the product. His work on the experience contributed to an 80 percent return-visitor rate, which shows how much clinicians rely on Medicai in their daily routines."

Mircea Popa, CEO @ Medicai

Impact

All insights in this case study are based on internal analytics from the past two years and public financial data.

1 — 
Platform Growth & Adoption

3× more website traffic
driven by a strong organic search strategy

3x rise in user base
growing the platform to more than 30k doctors and patients

70+ organizations
including major hospitals and clinical groups now relying on Medicai for their imaging workflows

2.2M+ imaging studies
stored and managed securely, showing reliable, large-scale performance

23,000+ Patients
using the platform to easily send imaging files and documents to their doctors

2 — 
User Engagement

82% Return-Visitor Rate
far above the typical 20 to 40 percent for B2B SaaS, showing long-term value for clinicians

55% Overall Engagement Rate
demonstrating a user experience that keeps people active and involved

52-min avg. session
inside the DICOM viewer, showing that radiologists stay engaged many times longer than the industry norm

3 — 
Business & Real-World Outcomes

5x revenue increase
over the past two years, driven by higher adoption and stronger retention

$1.6M in Venture Funding
raised from notable investors, validating both the product and the market opportunity

5+ work-years
of clinician time spent inside Medicai in just two years

Starting in 2022, via our "Tumour Board" initiative, with support from Heal 21 Association and Blue Heron Foundation, Medicai enabled remote consultations for patients in Ukraine with support from medical professionals around the world.

The Tumour Board project continues today and has reached thousands of patients through a fully remote workflow.

Read more about it on TechCrunch

In Retrospect

Designing for healthcare taught me that innovation does not always come from changing familiar patterns. It often comes from understanding why those patterns exist and improving them in ways that respect how people actually work.

Trust is difficult to build in digital products and can disappear instantly. In healthcare, every interaction matters. Familiar, dependable workflows can be more impactful than new ideas if they help people work faster and with fewer mistakes. In life-critical environments, performance is a feature. Saving seconds can make a real difference.

I also saw how designing both the product and the website creates strong momentum. When both move in the same direction, they reinforce each other and accelerate growth.

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