MR atlas of the developing brain
One age. Multiple perspectives.
A local, offline viewer for the supplied MR atlas. Images stay on this computer; no external libraries, fonts, analytics, or services are used.
Case mode shows one case in a 1 × 2 layout, initially axial T1 and axial T2. Click a pane or its series selector to change that pane. Reset adjustments clears window / level, zoom, pan and crosshairs without changing the series or slice. Reset series restores left axial T1 and right axial T2, keeping display adjustments.
Compare mode centers the selected age between the two preceding and two following ages in the active list, all in one row. Missing neighbors remain empty. T2 is the initial comparison contrast; the left panel has T1/T2 shortcuts and a dropdown for every available series. The dropdown shows how many visible cases have each series. An unavailable series is explicitly marked in that case's pane.
Core contains folders prefixed with !. Expanded includes every case. Checked lets you select a custom subset of the expanded list. Negative days mean before term; positive days mean after term. The supplied -1 day case is labeled "term." Cases are sorted by signed days, not by folder name.
Axial series are matched using their A-E filename landmarks, with interpolation between them and at the ends. A-E represent brainstem, cerebral peduncles, two basal-ganglia levels, and centrum semiovale. Other same-plane series use relative slice position. Different planes do not scroll together.
These JPEGs have no DICOM geometry, orientation, voxel spacing, or image registration. Crosshairs in the same plane copy normalized image coordinates and match the slice by landmarks when possible; they are not registered anatomy. Cross-plane localization is not available: those panes show a warning instead of a misleading location. The sagittal series contains a single reference image. Window / level adjusts the rendered 8-bit JPEG, not original MR signal values. Do not use this reference viewer for diagnosis or quantitative measurements.
The info button opens the original case notes for the selected age. In compare mode, each pane also has a notes button for its own case. Settings are saved in this browser when local storage is available; case notes and images are not copied into browser storage.
Open Myelination Atlas.html directly in a modern browser. Keep it alongside the Atlas folder. The HTML embeds the case/series index but references the original JPEGs. To move it, copy the HTML and Atlas folder together. If the image folders change, the embedded index must be rebuilt. No server or internet connection is needed. On small screens, the five-pane row scrolls horizontally rather than wrapping.
Open the original atlas tutorial
The original atlas, source images, and original software were created by Edward Weinberger and colleagues. This viewer is a modernized interface for that work.
Jelacic S, de Regt D, Weinberger E. Interactive Digital MR Atlas of the Pediatric Brain. RadioGraphics. 2006;26(2):497-501. doi:10.1148/rg.262055009
Modernized web viewer/interface vibe coded by Chintan Shah, MD, with GitHub Copilot.
Myelination MRI Atlas — an online atlas of normal myelination.
Original atlas text, supplied as reference context. These cases may include incidental findings; "normal myelination" does not mean every study is otherwise normal.