The verdict in three sentences
For a 4-site imaging centre (MRI, CT, ultrasound), the real issue is not the calendar but handling variable-length slots and patient preparation. Doctolib costs around EUR 139 per practitioner per month and covers simple booking well; a custom platform connected to the RIS and hosted on certified health-grade infrastructure runs EUR 45,000 to 95,000 in Germany (2026 ballpark). The decision hinges on one indicator: cutting the no-show rate from 9% to 4% on MRI slots that are expensive to leave empty.
Why imaging makes scheduling harder
A GP practice handles 15 or 20-minute consultations. An imaging centre in Berlin juggles exams from 10 minutes (X-ray) to 45 minutes (contrast MRI), machines shared between radiologists, contraindications (pacemakers, claustrophobia, kidney failure), preparation (fasting, full bladder, pausing metformin) and referrals to check before the exam.
When a patient arrives without having fasted, a 30-minute MRI slot is lost. When they do not show up at all, the scanner sits idle while costing over EUR 1,000 a day in depreciation and maintenance.
| Business constraint | Standard scheduler | Custom platform | Measurable impact |
|---|---|---|---|
| Variable duration by exam and machine | Configured visit types, limited options | Duration calculated by exam, contrast, protocol | 8 to 12% capacity recovered |
| Contraindication questionnaire | Generic form | Conditional form blocking booking when needed | Fewer same-day postponements |
| Patient preparation | Standard SMS reminder | Exam-specific instructions at D-3 and D-1, read receipt | Fewer exams cancelled on site |
| Referral upload | Optional attachment | Mandatory referral, pre-checked by front desk | Fewer refusals at reception |
| Waiting list | Basic depending on plan | Automatic offer of freed slots | No-show slots refilled |
| RIS connection | Depends on vendor | Two-way HL7 or API exchange | Zero re-entry |
| Multi-site | Calendar per location | Routing to nearest available site | Shorter average wait |
Doctolib or custom: costed comparison
With 18 radiologists and practitioners equipped across 4 sites, the Doctolib subscription reaches EUR 2,502 per month, about EUR 30,000 per year. A custom build requires a heavier upfront investment, with precise regulatory obligations.
| Item | Doctolib (18 practitioners) | German agency custom build | Kolonell custom build |
|---|---|---|---|
| Upfront cost | Low, onboarding included | EUR 45,000 to 95,000 | Complex app: 7,000,000 to 15,000,000+ FCFA (EUR 10,670 to 22,870+) |
| Annual cost | About EUR 30,000 | Maintenance 15 to 20% of build | Maintenance 120,000 FCFA per month (EUR 183) |
| Health-grade hosting | Included | EUR 300 to 1,500 per month with a C5-attested host | Quote on request, with a certified host |
| Patient visibility | Strong, national directory | To build (website, SEO, referring doctors) | To build |
| Imaging-specific logic | Decent, limited to options | Full | Full |
| RIS connection | Depends on vendor partnerships | Custom | Custom |
| Time to go live | 2 to 4 weeks | 4 to 7 months | 4 to 6 months |
Two points weigh on the decision. Hosting health data in Germany means GDPR plus German health-sector expectations, with BSI C5 attestation becoming the norm for cloud providers handling patient data: this is non-negotiable. And Doctolib brings visibility that an in-house tool must make up for: many centres keep Doctolib as a shop window and move complex exams to their own booking journey.
A hybrid architecture is often more rational
For a 4-site centre, the most cost-effective setup is often hybrid: Doctolib for simple X-ray and ultrasound bookings, a custom platform for MRI and CT, with a safety questionnaire, referral upload and guided preparation. Both feed the RIS. This reduces the number of subscribed practitioners and concentrates investment where each slot is worth most.
Compliance goes beyond hosting: a GDPR data protection impact assessment, strong authentication for front-desk staff, access logging and explicit patient consent for SMS.
Mini case study
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Dr Weber, medical director of a 4-site imaging centre in Berlin, performs 5,500 exams per month with a 9% no-show rate, 495 lost slots. Moving to 4% recovers 275 slots per month. If 60% are refilled from the waiting list at EUR 75 average revenue, the gain reaches EUR 12,375 per month, around EUR 148,500 per year. With a custom platform at EUR 75,000, hosting at EUR 900 per month and maintenance of EUR 13,000 per year, first-year cost is EUR 98,800. Even keeping part of the Doctolib subscription, the project pays back in under 9 months.
FAQ
How much does a scheduling platform for an imaging centre cost?
Between EUR 45,000 and 95,000 from a German agency in 2026, excluding hosting. At Kolonell, this type of project falls under the complex app tier, 7,000,000 to 15,000,000+ FCFA, with health-grade hosting quoted on request.
Is certified hosting really mandatory?
Under GDPR, health data is a special category requiring strong safeguards, and German practice expects C5-attested cloud providers. Plan EUR 300 to 1,500 per month depending on volume and redundancy.
Should we drop Doctolib?
Not necessarily. A hybrid setup keeps Doctolib for simple exams and visibility, and moves MRI and CT to the custom platform, often cutting the subscription by 30 to 50%.
How does the platform reduce no-shows?
Through active confirmation at D-2, preparation instructions at D-3 and D-1, and automatic offers of freed slots to the waiting list. Going from 9% to 4% is a realistic 6-month target.
What timeline for a 4-site centre?
Plan 4 to 6 months, including 6 to 8 weeks for RIS connection and testing, then a pilot at one site before extending to the other three.
Let's scope your project. Describe your sites, modalities and RIS, and we will propose a hybrid or full scope with a 4 to 6 month plan. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
