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File-opening guide

How to open Morita CT_0.vol and CtStatus.csv files

On a Morita One Volume Viewer disc, CT_0.vol holds the volume and CtStatus.csv supplies companion information. Import their complete folder in the Ossidex iPhone/iPad app; this supported Morita layout does not mean every file ending in .vol is supported.

By the Ossidex team · How we write and check these pages · Updated

Download on the App StoreFree to download · iPhone & iPad · iOS 17+

Keep the Morita scan folder together

What you haveWhat it means
CT_<date and time>/CT_0.volThe reconstructed Morita volume. The date-and-time portion of the folder name varies by examination.
CtStatus.csvCompanion scan information used for the study name and default display window. Preserve it next to the volume.
OneVolumeViewer.exe and its librariesWindows viewing software. Ossidex imports the supported volume without running this program.

How to open the images

  1. Copy the complete scan directory. Keep CT_0.vol and CtStatus.csv together, or copy the whole disc. A copy of OneVolumeViewer.exe alone contains no volume.
  2. Move the folder to Files. Transfer the complete folder through iCloud Drive, a compatible drive or a ZIP. Preserve the companion file names.
  3. Import the folder on iPhone or iPad. In Ossidex, tap +, then Folder. Select the copied folder containing the images, not just the launcher or index. If you received a ZIP, choose Files / ZIP instead. These are the English app labels.
  4. Check the volume and its limits. Open the imported series and inspect its images. Request DICOM if you need recorded patient orientation rather than relying on the volume’s display arrangement.

What to check if it still does not open

The supported Morita volume does not record patient orientation, so left/right labels are not supplied from that file. Its gray values are not calibrated Hounsfield units. These limits matter even when the image looks correct.

The standalone volume can open without the CSV, but companion information may be absent. The browser route described below requires a DICOM export; it is not a claim that the web viewer decodes Morita VOL files. Ask the clinic for standard DICOM when using a different viewer or when orientation is needed.

Viewer options and format limits

On a Mac, open the browser viewer and choose Open folder for the complete DICOM folder or Open files for a ZIP. Browser format and memory limits differ from the iPhone/iPad app; a successful import does not establish that the examination is complete.

See the matching format or export guide and tested samples and compatibility limits. Ossidex is a viewer and planning aid, not a diagnostic device.

Frequently asked questions

Can I open any .vol file this way?

No. VOL is not a universal format. This workflow concerns the documented Morita One Volume Viewer layout.

Can I delete CtStatus.csv?

Keep it. The volume can be readable alone, but the CSV supplies useful study and display information.

Sources

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