The Use of cineMRI to Evaluate Botox in Patients With Medication Refractory Overactive Bladder

The investigators will be testing the capability of cineMRI combined with simultaneous urodynamics in the context of OAB in this proposal and expect to reveal a new understanding of diseased lower urinary tract physiology. Participants will receive an injection of intravesical botulinum toxin after filling out validated questionnaires and receiving a pre-treatment cineMRI-UDS.