# 3.7.3 (2021-03-01)
- VHS (Vertebral Heart Size) feature has been implemented: User Settings > Viewer > Toolbar.
- "Institution" has been added to the criteria of permissions to access studies at level of Institution: Admin Settings > Account
- Placed Cloud Connector, DICOM Provider and DICOM User under Institution: Admin Settings > Server > Connection
- Changed the specification of the sort order of Study List so that sorting of Study Date and Time in descending order is automatically applied as necessary.
- On Advanced Search, search of Institution and Note is available.
- On Advanced Search, the selection method for Patient Sex and Report Status has been changed from select menu to checkbox.
- Images of Digital Breast Tomosynthesis has been supported.
- The speed of opening multi-frame images has been significantly accelerated.
- Fixed a bug that users cannot log in from the login form when the ID is two characters.
- Fixed a bug that temporary files are not deleted properly when backing up database files.
From this version, the specification has been changed to create a cache when saving multi-frame images.
This will significantly accelerate the speed of opening them, but be aware that a cache will increase the file size.
Also, a cache will be only created for newly saved ones.
To create a cache for an existing multi-frame images, you need to import them again.