It's used only as a dev dependency in 4 crates.

Depender (with downloads and own rev deps) dicom-test-files version
24K 15 dicom-object dev ^0.3
24K 9 dicom-transfer-syntax-registry dev ^0.3
20K 4 dicom-pixeldata dev ^0.3
4.2K 2 dicom-json dev ^0.3