Positron Emission Tomography Study of Changes in [11C]AZ14132516 Uptake Following Administration of AZD7798 to Patients With Crohn's Disease.

Each participating patient will receive the study drug as specified in the study protocol.

A single microdose (≤ 10 μg) of radiopharmaceutical \[11C\]AZ14132516 will be extemporaneously prepared and administered to each participant prior to each PET examination