CT
View CT Scans in Your Browser
Computed Tomography (CT) produces detailed cross-sectional images of the body using X-rays. CT scans are stored as DICOM files — typically hundreds of slices per series — on CDs or in folders from your hospital.
What is a CT scan?
A CT scanner rotates an X-ray beam around your body to capture cross-sectional slices. These slices are reconstructed into detailed images that reveal bones, organs, and soft tissue. Common CT studies include thorax, abdomen, head, and spine scans. Each slice is stored as an individual DICOM file with standardized metadata like window width, window center, and pixel spacing.
DICOM structure
Hospital CT discs typically contain a DICOMDIR index file that organizes your images into a hierarchy: Patient → Study → Series → Image. openrad reads this index automatically, or falls back to scanning all files in the folder. Each DICOM file contains both the image pixel data and metadata like slice position, spacing, and Hounsfield unit calibration.
openrad CT features
- ✓Window/level presets for soft tissue, bone, lung, and brain
- ✓Smooth scrolling through hundreds of slices
- ✓Length measurements with pixel spacing calibration
- ✓Hounsfield unit display with rescale slope/intercept
- ✓DICOMDIR auto-detection for fast loading