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Display Calibration

Critical Accuracy

It is critical that radiology displays present accurate and consistent images. Image Systems provides calibration solutions to ensure DICOM Part 3.14 compliance when using our display solutions. Image Systems’ CFS is the Calibration Feedback System you need to ensure your displays are calibrated properly.

Calibration Hardware

Integrated Front Sensor

An integrated front sensor is standard on Image Systems series of color and grayscale LCD PACS monitors. Two types are utilized depending on model: a moveable front sensor retracts into the bezel after use keeping the entire LCD screen viewable or a fixed front sensor is hidden under the front bezel, again leaving the entire LCD screen viewable for the user. The integrated front sensor enables front- of-screen luminance and DICOM calibration and conformance tests, performed on-demand or scheduled on a hands-free basis.

Image Systems’ Chroma5 luminance meter (Puck)

A handheld puck is used with the CFS Local software to characterize the integrated front sensor and calibrate the internal back light sensor. Validation with the handheld photometer is recommended annually per AAPM TG-18. The puck has a USB interface.

SBC Stable Back light Control

The SBC function consists of a separate back light sensor internal to the monitor that measures and provides a closed-loop control of the luminance output of the LCD back light. This feature is standard on the Image Systems series of LCD PACS displays

Add-on Front Sensor (AFS)

For LCD monitors that do not have an integrated front sensor, this add-on front sensor attaches to the monitor and provides for hands free, front-of-screen luminance and DICOM calibration and conformance. Connects via USB interface. Learn more.

Calibration WebSuite

CFS ™ (Calibration Feedback System) WebManager

CFS WebManager enables centralized remote monitoring of enterprise wide deployed monitors via a web browser.  Detailed information about a monitor’s status can be viewed, administrators are notified with e-mail alerts of non-conformance, ability to set up an enterprise wide QC schedule, and displays can be re-calibrated from a remote administrator’s location.  Verifiable record of scheduled QC tests and compliance can be auto generated in Fleet Reports and Log files

CFS ™ (Calibration Feedback System) Local with Hands-Free Support

The CFS software is used with the integrated luminance sensors to provide hands-free, front-of-screen DICOM calibration and compliance testing. A built-in scheduler can initiate the QC testing to occur on off-hours. A summary report is generated providing a verifiable record of compliance testing. Eliminates or reduces the need for technicians to take manual measurements.

CFS ™ (Calibration Feedback System) with Puck Support

CFS software can be used with a precise, handheld luminance meter (puck) to provide  front-of-screen DICOM calibration and compliance tests per the procedures described in the ACR/NEMA DICOM standard. A custom Lookup Table can be generated and uploaded to the monitor or the graphics card to ensure DICOM compliance.

CFS and CFS WebManger

Test Pattern and DICOM Viewer

Included in the Image Systems CFS software are test patterns for visual confirmation of DICOM calibration and conformance including SMPTE, Briggs, Luminance, and easy access to TG18-QC test patterns.  In addition, a simple DICOM viewer is included to enable viewing of medical images and modality generated test images.
SPOTTEST – Browser-based Quality Assurance (QA) Test

This “tap test” cannot be fooled.  It provides an objective, quantifiable measurement of a user’s ability to discern various low-contrast gray-shades from the background.  It works on tablets (including an iPad), smart phones, laptops, commercial displays, and radiology read stations.  Discover SPOTTEST by clicking on the link/button below:

File Downloads

CFS and CFS WebManger
Image Systems Add-On Front Sensor (AFS)
Calibration in Medical Imaging White Paper