Concurrent chemoradiotherapy followed by brachytherapy (BRT) is the standard treatment for patients
with locally advanced cervical cancer. Today, three-dimensional (3D) image-guided BRT (3D-IGBT)
is the new standard. It improves local control, increases overall survival, and minimizes toxicity. Magnetic
resonance imaging (MRI), ultrasound (US), computed tomography (CT), and positron emission
tomography (PET)/CT can be performed in 3D-IGBT. In cervical cancers, MRI is considered the gold
standard imaging modality. It also has been implemented into the cervix 3D-IGBT because of the excellent
soft tissue contrast with clear definition of target volumes and easily identified organs at risk
(OARs). This review summarizes imaging and volume definitions in 3D-IGBT of cervical cancer.
Keywords: Brachytherapy; cervix carcinoma; contouring; imaging; target volume
