MRview is a 3D medical image viewer that allows you to load and visualize NIfTI files, overlay multiple images, and perform basic image analysis tasks.

MRview is a lightweight, open-source 3D medical image viewer designed for viewing and analyzing neuroimaging data. It supports NIfTI format files and provides essential tools for volume rendering, image overlay, and basic analysis. The software offers an intuitive interface for navigating through brain scans, adjusting display settings, and measuring distances or volumes within images.

Installation and Setup

  • Download MRview from the official website or package repository
  • Install on Windows, macOS, or Linux systems
  • No additional dependencies required for basic functionality
  • Launch the application to access the main interface

Loading and Viewing Images

  1. Click "File" → "Open" to load NIfTI files
  2. Use the file browser to navigate to your data directory
  3. Select one or multiple images to open simultaneously
  4. Images appear in separate tabs or overlay panels

Navigation and Display Controls

  • Use mouse scroll wheel to zoom in/out
  • Click and drag to rotate the 3D volume
  • Right-click and drag to pan the view
  • Adjust window level and width for optimal contrast

Overlay and Comparison Features

Feature Functionality Usage
Image Overlay Display multiple images simultaneously Drag images between panels
Transparency Control Adjust opacity of overlaid images Use slider bars
Color Mapping Apply different color schemes Select from color palette
Crosshair Sync Link crosshair positions Enable in settings

Basic Analysis Tools

  • Distance measurement between two points
  • Volume calculation of selected regions
  • Intensity value readout at cursor position
  • Slice-based viewing in axial, sagittal, and coronal planes

Export and Saving Options

  1. Save current view as image file (PNG, JPEG)
  2. Export 3D renderings in standard formats
  3. Save measurement data and annotations
  4. Export project files for later reopening

Troubleshooting Common Issues

  • Check file format compatibility (NIfTI required)
  • Verify sufficient system memory for large datasets
  • Update graphics drivers for optimal 3D rendering
  • Consult documentation for specific error messages