Research & education use only

Cardiovascular MRI analysis, free in your browser or on your desktop.

FreeCMR reviews, measures, and quantifies a multiparametric CMR study: cine function, tissue characterisation, flow, perfusion, and 3D. Run the Lite version instantly in your browser, or install the full version via the desktop app (coming soon).

Open FreeCMR Lite Compare the two versions
Instant
FreeCMR Lite, in your browser
10
Desktop modules
FreeCMR Lite's SAX Quantify screen: LV Endo/Epi/RV contours drawn on a short-axis slice, LAX reference panels with dashed cut-lines on the left, and live EDV/ESV/EF/mass volumetry on the right.
FreeCMR Lite · SAX Quantify, live in-browser
Not for clinical use. Both versions of FreeCMR are intended for research and education only. Neither is a certified or licensed diagnostic tool, and neither should be used to make or support decisions about a patient's care.

Comparison

FreeCMR Lite vs. FreeCMR Desktop

FreeCMR Lite Live now

Import a folder of DICOM files: viewer, measurements, and a full short-axis workflow, right in your browser. Nothing you load is ever uploaded, it stays in that browser tab.

✓ No install ✓ Nothing leaves the browser ✓ Viewer + short-axis only
Open FreeCMR Lite →
FreeCMR Desktop Coming soon

The full 10-module suite: viewer, short-axis, long-axis, T1/T2, T2*, perfusion, LGE scar quantification, flow, and 3D MPR. Installed locally, with a saved study database.

✓ All 10 modules ✓ Saved study database ✓ Works fully offline
Get notified →

FreeCMR Lite

A closer look at the browser app.

FreeCMR Lite's opening screen after loading a study.

FreeCMR Desktop

Ten modules, one workspace.

Viewer
Cine, measurements, multi-panel layout up to 4×2
SAX
LV/RV contouring, RWMA bullseye, volumes & mass
Biplane
LV Simpson's, plus LA & RA from two long-axis views
T1 Fitting
Native & post-contrast T1 from source images, with ECV
T1 Mapping
16-segment AHA T1 from vendor-computed maps
T2 Mapping
Whole-slice & 16-segment AHA T2 quantification
T2* Fitting
Cardiac & liver iron loading, Garbowski LIC
Perfusion
Stress/rest review with segment defect scoring
2D Flow
Venc-aware flow quantification, Qp:Qs comparison
LGE
Manual/SD/FWHM scar quantification, viability bullseye
3D Volume
Three linked MPR panels, oblique reformatting
See full detail on
every module ↓
FreeCMR Desktop's Viewer module: a 2x2 layout with Ref Line active, showing where each panel's slice cuts through the others.

Every module, in detail

Viewer — main viewing module ▶

Cine playback, window/level, zoom/pan/rotate, general-purpose measurements, and study export and anonymisation.

  • Multi-panel layout up to 4×2
  • Line, Polyline, Polycurve, Region, Freehand, Arrow, and Text measurement tools
  • Expand Slice Positions: review every slice of a stack at once, playing in lockstep, inside one panel
  • Overlay, Measures, and LUT toggle on/off
  • Anonymised DICOM/NIfTI export, plus CSV export of measurements
FreeCMR main window after loading a study, showing a 2x2 layout with Ref Line active.
SAX — short-axis review and analysis ▶

Short-axis function analysis: LV and RV contouring, wall motion grading, volumes and mass.

  • Base-to-apex stack assembly with long-axis reference views
  • 16-segment RWMA bullseye, click to grade regional wall motion
  • EDV, ESV, EF, mass, and wall thickness, per slice and indexed to BSA
SAX Quantify with a full short-axis stack, long-axis reference views, and live volumetry.
Biplane — LV, LA & RA from two long-axis views ▶

Left ventricular volumes by the biplane Simpson's method, plus left and right atrial area and volume, from a single screen.

  • Simultaneous 4-chamber and 2-chamber contouring
  • Linked phase marking across both views
  • BSA-indexed results for LV, LA, and RA
LV Endo/Epi traced on both the 4-chamber and 2-chamber panels in Biplane.
T1 Fitting — native & post-contrast T1, from source images ▶

Fits a T1 curve per ROI from raw multi-TI MOLLI/ShMOLLI source images, for native (Pre) and post-contrast (Post) acquisitions, with ECV.

  • Automatic MOLLI/ShMOLLI sequence detection, overridable
  • Pre/Post slice matching by position
  • ECV from a haematocrit value and paired T1 fits
  • Siemens and GE supported.
T1 Fitting Analysis: Myo and Blood Pool ROIs, fit graph, and ECV panel.
T1 Mapping — from vendor-computed T1 maps ▶

Analysis of a T1 map from the vendor: entire-myocardium and 16-segment AHA T1, with ECV.

  • 16-segment AHA T1, tagged Base, Mid, or Apex
  • Endo/Epi offset for partial voluming
  • Pre/Post ECV per segment
T1 Mapping Analysis: Endo/Epi and RV insertion points on a colour T1 map, with AHA segments numbered.
T2 Mapping — from vendor-computed T2 maps ▶

Analysis of a T2 map from the vendor: whole-slice and 16-segment AHA T2 quantification.

  • 16-segment AHA T2, tagged Base, Mid, or Apex
  • Focal Myo ROI sampling, separate from the segment ring
T2 Mapping Analysis: Endo/Epi and RV insertion points drawn, segments numbered.
T2* Fitting — cardiac & liver iron loading ▶

Fits a T2* decay curve per ROI from multi-echo source images. Cardiac and liver ROIs.

  • Mono-exponential T2*/R2* fitting, with echo truncation
  • Cardiac and hepatic iron ROIs
  • Liver Iron Concentration via the Garbowski 2014 formula
T2* Fitting Analysis: Myo ROI traced on a cardiac echo stack, with the T2* fit graph and results panel.
Perfusion — stress & rest perfusion review and defect scoring ▶

Stress and rest first-pass perfusion cine review, side by side, with segment-by-segment defect scoring.

  • Independent Stress and Rest playback rows
  • 16-segment click-to-grade Stress and Rest bullseyes
Perfusion Review: Stress (top row) and Rest (bottom row) slices side by side, one column per short-axis level.
2D Flow — phase-contrast flow quantification and comparison ▶

Velocity-encoded through-plane flow at one imaging level, per cardiac phase, from a Magnitude/Phase series pair.

  • Venc auto-detected from vendor DICOM tags
  • Background-offset correction from a reference ROI
  • Two-ROI comparison for a Qp:Qs shunt ratio
2D Flow Analysis: Flow ROI and Background ROI drawn on both the Mag and Phase/Velocity panels, with the flow-velocity curve graph and results row.
LGE — scar review and quantification ▶

Scar quantification from late gadolinium enhancement imaging, with three interchangeable threshold methods.

  • Manual, SD, and FWHM thresholding
  • Base-to-apex Remote and FWHM signal carry-down
  • Per-segment scar burden and a viability bullseye
LGE Quantify: LV Endo/Epi and RV insertion points drawn, scar region highlighted, segments numbered.
3D Volume — multiplanar reconstruction ▶

Three linked multiplanar (MPR) panels with oblique reformatting, for reviewing 3D whole-heart or angiography.

  • Shared crosshair across axial-, coronal-, and sagittal-equivalent panels
  • Real-time oblique reformatting by right-click-drag
  • Measurements stored as true 3D coordinates
3D Volume's three linked MPR panels, each panel's crosshair showing where the other two currently cut through it.