1 Load image
2 Draw ROI
3 Read the value
4 Record to QC

Drag your slices here

or click to browse — you can select every slice of a series at once

DICOM (.dcm) → true measurement in HU, acquisition parameters read automatically
PNG / JPEG → display only, relative units, not usable for accredited QC

Drag on empty space to draw an ROI · press inside to move · pull the edge to resize

Set window values manually

Level (centre)

Width

Use the slider, the mouse wheel or the arrow keys to change slice. ROIs are measured at the same position on every slice — that is what keeps a comparison across the series consistent.

Profile across the series

ROI A · ■ mean · ■ SD (noise) · x axis: slice order

ROIs on this slice

ROI	Mean	SD	Pixels
No ROI yet — drag on the image to draw one

Phantom layout settings

ROI radius px

Distance from centre px

Noise (SD)

—

ROI

SNR

—

mean ÷ SD · same ROI

CNR

—

↔

Uniformity

—

centre

Series summary

ROI A

Single slice loaded — a series summary needs more than one slice

ort = (1/n)·Σxᵢ · SD = √[Σ(xᵢ−ort)²/(n−1)] · SNR = ort⁄SD · CNR = |ort_A−ort_B|⁄SD_B

Quality Control Module

Pick a test, read the protocol, measure and record.

Most tests need no image — for kVp accuracy, HVL, mAs linearity or fluoroscopy dose rate you simply type the measured values. Only ROI-based tests require you to load a series from the Image Analysis tab.

Modality

0/0 tests recorded

0 pass

0 out of tolerance

Session records

What you recorded in this browser session

Test	Value	Tol / Rem / Susp	Result	Date
No records yet — pick a test and record a measurement

Performed by

Device / serial no

Evaluation framework. Tolerance → Remedial → Suspension (the IAEA approach). Exact tolerance values and test frequencies are set by national regulation and international protocols (IAEA, AAPM, IEC, EFOMP); this tool does not invent numbers. This report does not replace an accredited quality control process.

The history is stored in this browser only. Nothing is sent to a server — that is our privacy promise, but here is the price: the data is invisible from any other computer, and it is deleted if you clear your browser data, work in a private window, or switch browsers. To avoid losing months of QC history, download the JSON backup at the end of every session and keep it on your institution's server.

Control chart

Where does the measurement sit over time, against the baseline and the acceptance levels?

Device Test

No history yet

Fill in the Device / serial no field on the Quality Control tab and record a measurement — it is written here automatically. With an empty device name nothing is stored, because a trend is meaningless without knowing which unit it belongs to.

Measurement history

Date	Value	From baseline	Result	By
No records

Serial Image & Quality Control (QC) Analyzer