Splashery

Playground
Volume Viewer, a still.

Studio · Built from a recipe

Volume Viewer

D4 on the major comb. Its drum rings at 308.9 Hz.

Turn it in the PlaygroundTap the picture to strike it.

A CT, MRI or microscope scan is a volume: a stack of slices, each a grid of numbers saying how dense or bright the object is there.

Shelf
Studio
Kind
Built from a recipe
Made from
Drag up or down on the volume to move the cut; tap it for the next preset. Play sweeps the cut through.
Your own
Your own volume
Sound
Yes
Licenses
CC BY 4.0, MIT

Its note

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 308.9 Hz, 88 cents sharp of D4, the nearest tine on the comb. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

The sixteen ways Volume Viewer's drum can ring, lowest first.
  1. 1309 Hz
  2. 2466 Hz
  3. 3512 Hz
  4. 4627 Hz
  5. 5655 Hz
  6. 6727 Hz
  7. 7791 Hz
  8. 8801 Hz
  9. 9865 Hz
  10. 10939 Hz
  11. 11956 Hz
  12. 12956 Hz
  13. 131010 Hz
  14. 141069 Hz
  15. 151110 Hz
  16. 161118 Hz

How to play

Drag up or down to cut into it; tap for the next window. Open your own scan in the Splash tab.

Its controls

ControlKindRangeStart
Sweep the cut through (tap the volume for the next preset: bone, soft tissue, full range)Tap
Sweep the cut throughButton
Next presetButton
VolumeList3 choicesA walnut (X-ray CT)
ViewList2 choices3D volume
WindowList4 choicesFull range (all but the air)
Level (your own window)Setting
Width (your own window)Setting
ColorsList5 choicesBone and tissue
OpacityList2 choicesSolid (everything in the window opaque)
CutList3 choicesFront to back
Only a thin slice at the cutSetting
Voxel size in mm (blank: the file's)Text

About it

A CT, MRI or microscope scan is a volume: a stack of slices, each a grid of numbers saying how dense or bright the object is there. Each little block is a voxel. Slices are often farther apart than the pixels in them, so every voxel is placed at its real size.

The window picks which values show: below it is treated as air, and the colors run from its bottom to its top. Bone shows the densest parts, Soft tissue the range below them, Full range everything but the air (in a medical CT, in Hounsfield units: water 0, air -1000). Tap to step through them, or set your own. Drag to move the cut, or show one thin slice. Maximum intensity shows the brightest value along each line, as radiologists view blood vessels.

Open your own DICOM, NIfTI, TIFF stack or raw file in the Splash tab; it stays on your device. The samples, a walnut (CWI) and a young gar's head (Brian Metscher), are CC BY 4.0.

Details

Your own files
.dcm, .dicom, .ima, .nii, .gz, .zip, .tif, .tiff, .raw, .bin, .img, .vol, .dat

Sources and credits

WorkByLicense
Cone-Beam X-Ray CT Data Collection Designed for Machine Learning: Samples 1-8 (Walnut 1)Henri Der Sarkissian, Felix Lucka, Maureen van Eijnatten, Giulia Colacicco, Sophia Bethany Coban, K. Joost Batenburg (CWI)CC BY 4.0
MicroCT images of 3 early gar (Lepisosteus osseus) stages between 12.7mm and 21.7mm (the 12.8 mm larva, averaged to 17.7 µm)Brian Metscher (University of Vienna)CC BY 4.0

Libraries

MIT
dicom-parser 1.8.21 (lane LSTUDIO, copied from Splashery)

In The Splash Manual

  1. Chapter 7: Real data as splats
  2. Chapter 10: Make your own

Share it

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.

https://splashery.app/play/?toy=volume-viewer<script type="module" src="https://splashery.app/play/src/element.js"></script> <splashery-toy toy="volume-viewer"></splashery-toy>

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