Orthotopic sigmoid neobladder surgery is one of the ideal urinary diversion methods after radical cystectomy.In recent years, functional imaging studies have revealed brain regions related to urinary system function, but brain activity of lower urinary tract function in neobladder patients is still unclear.The aim of this study is to explore the brain activity of urination intention and self-controlled urination behavior in patients with orthotopic sigmoid neobladder by task-state functional magnetic resonance imaging (fMRI).

Inclusion Criteria:

1. Being right-handed;
2. 3 months or more after operation;
3. No contraindications to fMIR examination;
4. Voluntarily sign informed consent.

Exclusion Criteria:

1. History of bladder radiotherapy;
2. History of prostate cancer;
3. Suffering from diseases affecting abdominal pressure;
4. History of abnormal brain anatomy, craniocerebral surgery, craniocerebral tumor, and craniocerebral radiotherapy;
5. History of mental disorders, Parkinson's disease, Alzheimer's disease, epilepsy, cerebral infarction, cerebral hemorrhage;
6. Claustrophobia or carrying metal implants that are not suitable for fMRI examination;
7. Diseases affecting lower urinary tract function (such as spinal cord injury, diabetic peripheral neuropathy, etc.);
8. Urethral stricture;
9. Refusing to sign the informed consent form for clinical projects;
10. Other conditions that were not suitable for inclusion according to the investigator's judgment.

Patients 3 months or more after orthotopic neobladder surgery.