Tensoerflow 1 deprecated in "RSNA 2021: TCIA and IDC"

[tamarkashti]

WARNING: Tensorflow 1 is deprecated, and support will be removed on August 1, 2022.
After that, %tensorflow_version 1.x will throw an error.

Your notebook should be updated to use Tensorflow 2.
See the guide at https://www.tensorflow.org/guide/migrate#migrate-from-tensorflow-1x-to-tensorflow-2.