All of the following investigations are used in FIGO staging of carcinoma cervix except ?

CECT According to the FIGO guidlines for clinical staging of cervical carcinoma, diagnostic studies include :-Intravenous urography (pyelography). - Cystoscopic examination of bladder and urethra Proctosigmoidoscopic study - Barium enema Colposcopic study of the vagina and vaginal formices in early stage disease. Colposcopic findings may be used for assigning a stage to the tumour for instance FIGO stage HA. - Chest radiograph and electrocardiographic studies are used to determine cardiopulmonary disease paicularly in oder patients. Pulmonary function studies can be impoant especially for evaluating patients who are candidates for extensive surgery. Remember CT scan, MRI lymphangiography and PET scan may offer information helpful for treatment planning but these findings do not change the FIGO stage of the disease. Pelvic examinations and clinical staging as defined by FIGO cannot detect metastasis such as paraaoic lymph node metastasis. Consequently there is growing body of literature showing the superiority of cross-sectional imaging computed Tomography (CT) and magnetic resonance imaging (MRI) over clinical staging in delineating the extent of the disease in patient with cervical cancer. The official FIGO guidelines do not incorporate the use of either CT or MRI findings into the staging of cervical cancer. This is due to the FIGO guideline that staging methods should be universally available so that staging can be standardized means of communication between different institutions wordwide.