Most patients with invasive carcinoma of the cervix, who are not candidates for a radical hysterectomy, are often treated by concomitant chemo-radiation with a curative intent. Patients who cannot achieve a cure with this treatment fail first or only in the pelvis. The higher doses of radiation would be expected to reduce this risk, which cannot be achieved with conventional radiotherapy due to higher rates of complications. Tomotherapy based treatment planning would be expected to obtain higher doses of radiation to be delivered but avoid the measured risk of complications. More accurate definition of clinical target volume, composed of the cervix, uterus, gross primary tumor and the regional lymphatic drainage is required for accurate treatment planning. Currently the investigators are planning on the basis of CT scan only in their center; MRI scan is consistently shown to be superior over CT for treatment. Fusing MRI and CT images are expected to delineate structures more accurately compared to CT alone and therefore will be valuable in accurate treatment planning to deliver higher doses to CTV without increasing treatment related complications.