Inclusion Criteria:  Histologically confirmed carcinoma of the uterine cervix. Age ≥ 20 years. Clinical International Federation of Gynecology and Obstetrics (FIGO) stage IB2-IV. Tumor diameter ≥ 4 cm, verified by MRI or CT. Scheduled curative-intent non-surgical treatment.  Exclusion Criteria:  Contraindication to MRI study (e.g. claustrophobia, cardiac pacemaker, metal implants in pelvis). Inadequate marrow, liver and renal functions. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. Pregnant or breast-feeding women.