DICOM GSDF calibration
Calibrate diagnostic displays to the DICOM Grayscale Standard Display Function with verified luminance response and JND-mapped grayscale precision.
Medical Display QA · DICOM GSDF
Medical display calibration & QA with PerfectLum
Measure luminance and grayscale response with a supported sensor, calibrate toward DICOM GSDF, then schedule display QA checks and keep reports for review. PerfectLum brings these steps together for radiology and medical physics teams.
Available for Windows and macOS. Choose a software license or a license + S2 Sensor bundle on the pricing page. Check your display, OS version and sensor with us before choosing your setup.
DICOM
GSDF calibration standard
QA
Automated & scheduled testing
PDF
Audit-ready reporting
Fleet
Remote QA integration
QUBYX Software
PerfectLum
Standard
DICOM GSDF
Output
Audit PDF
Hardware
S1 · S2 · 3rd-party
Fleet
RemoteQA-ready
Aligned with the standards diagnostic imaging depends on
The diagnostic challenge
Medical displays drift. Diagnostic decisions still depend on them.
Display luminance and grayscale response can change as a monitor ages. Regular measurement and verification help teams identify changes, compare results with their QA targets, and decide when recalibration or service is needed.
Drift
Gradual
Backlight aging gradually lowers luminance and shifts grayscale response, pushing diagnostic displays out of DICOM GSDF compliance. AAPM TG-18 and TG-270 call for routine QA to catch it.
Risk
Silent
Visual checks alone may miss a measurable change in grayscale response. Sensor-based QA provides a repeatable way to evaluate it.
Audit
Manual
Recorded measurements and test history help teams review display performance and prepare for quality audits.
What PerfectLum does
Medical display calibration and QA in one workflow.
PerfectLum brings calibration, automated QA, scheduled verification, compliance documentation, and long-term tracking into a single, repeatable workflow — on a workstation or across an entire fleet.
Automated QA & verification
Run acceptance, consistency, and routine QA tests automatically — with pass/fail thresholds aligned to recognized medical imaging guidelines.
Scheduled testing
Set routine or custom test schedules to monitor display performance and flag results for review.
PDF reporting
Structured PDF reports with calibration results, GSDF conformance, luminance, contrast, and ambient data — ready for compliance audits.
Long-term stability tracking
Track display behavior across months and years. Identify drifting monitors before they affect diagnostic interpretation.
RemoteQA integration
Connect PerfectLum-managed workstations to QUBYX RemoteQA for fleet-wide monitoring, scheduling, and centralized compliance dashboards.
The PerfectLum workflow
Calibrate. Verify. Document. Repeat with confidence.
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Step 01
Measure
Acquire measurement data with a compatible sensor, including the regular S2 Sensor available with PerfectLum.
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Step 02
Calibrate
Set target luminance and grayscale response, then calibrate supported displays toward DICOM GSDF.
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Step 03
Verify
Run acceptance, constancy, and visual tests against configured pass/fail thresholds.
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Step 04
Document
Export PDF reports with measurement results and test history for your QA records.
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Step 05
Manage
Track results across the fleet through RemoteQA — schedule the next cycle, monitor failures, escalate exceptions.
Standards & compliance
Built around the guidelines medical imaging is held to.
PerfectLum supports recognized medical display QA workflows so radiology, medical physics, and healthcare IT teams can demonstrate compliance with the standards their organizations depend on.
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DICOM Part 14 — Grayscale Standard Display Function (GSDF) -
AAPM TG-18 / TG-270 — acceptance, constancy & visual tests -
ACR — diagnostic display QA practice guidelines -
DIN 6868-157 — image quality assurance in medical imaging (Germany) -
IEC 62563 — display device evaluation in medical imaging
Plan your checks with our DICOM GSDF display guide, TG-270 acceptance test walkthrough, and color medical display calibration guide.
Sample PDF report contents
Display identification & asset ID
GSDF conformance curve & deviation
Luminance min, max & contrast ratio
Ambient luminance & reflection
White point chromaticity (Δu′v′)
Acceptance / constancy pass-fail
Operator, site & timestamp metadata
Historical comparison vs. baseline
Every report is structured for audit. Templates can be configured per site, department, or regulatory framework, then exported and archived through RemoteQA for fleet-wide traceability.
Measurement hardware
Choose the sensor for your workflow.
PerfectLum runs on your workstation and uses a compatible measurement sensor. The regular S2 Sensor is available now in the PerfectLum bundle.
S1 Sensor
Regular sensor for display manufacturers and OEM integration projects.
The regular S1 is the OEM sensor category. It is distinct from the SmartSensor S1 offering with embedded software.
Contact QUBYX about your integration requirements.
Discuss an OEM projectS2 Sensor
Regular external sensor for consumers and end users.
The sensor currently supplied with PerfectLum. PerfectLum runs on your workstation; the sensor provides the measurement hardware.
PerfectLum + S2 Sensor: $680 base price without maintenance. Optional maintenance is priced separately.
View PerfectLum + S2 SensorPlanning an embedded solution? SmartSensor is the range with software embedded in the sensor system: S1 as OEM components and S2 as a complete device for end users. Explore SmartSensor
Who PerfectLum is for
From a single reading room to a national hospital network.
Radiology departments
Measure and document grayscale performance across diagnostic workstations and modalities.
Medical physicists
Run acceptance and constancy testing aligned with AAPM, ACR, and IEC guidelines.
Healthcare IT & PACS
Roll out, schedule, and centrally monitor QA without visiting each workstation manually.
Diagnostic imaging centers
Demonstrate consistent display quality to referring physicians and accrediting bodies.
Hospital networks
Standardize QA policy across sites, then enforce it through RemoteQA fleet management.
Mammography & specialty
Maintain higher luminance and contrast targets required for mammography review.
Frequently asked
Answers for radiology, physics, and healthcare IT.
What is DICOM GSDF calibration?
DICOM Part 14 defines the Grayscale Standard Display Function, a target luminance response for grayscale images. PerfectLum can calibrate and test supported displays against GSDF; suitability for diagnostic use also depends on the display, environment, and clinical QA requirements.
Who should use PerfectLum?
PerfectLum is designed for radiology departments, medical physicists, healthcare IT teams, PACS managers, diagnostic imaging centers, and hospital networks that need to calibrate, verify, document, and maintain medical display performance.
Does PerfectLum work with my existing diagnostic displays?
Yes. PerfectLum supports a wide range of professional medical displays, secondary review monitors, and standard color or grayscale workstations from major manufacturers, including units paired with built-in front sensors or external calibration colorimeters.
What measurement hardware does PerfectLum support?
PerfectLum runs on your workstation with a compatible measurement sensor. The regular S2 Sensor is available in the PerfectLum bundle. SmartSensor S1 and S2 are embedded-software offerings.
Can PerfectLum manage display QA across multiple sites?
Yes. PerfectLum connects with QUBYX RemoteQA to provide fleet-wide monitoring, scheduled QA, failure tracking, and centralized compliance reporting from a single dashboard.
Does PerfectLum produce audit-ready reports?
Yes. Every calibration, verification, and acceptance test generates a structured PDF report with measured luminance, contrast ratio, GSDF conformance, ambient light data, and pass/fail outcomes — ready for compliance audits and historical review.
PerfectLum · Medical Display QA
See it on a diagnostic workstation — in your environment.
Request a live demo, evaluate a trial against your existing fleet, or talk to QUBYX about national rollout, integration, and support.
