MRI and CT of the Uterus
Computed tomography (CT) of the pelvis requires good contrasting of the gastrointestinal tract; this is achieved by oral application of about 1000 ml of an appropriate contrast medium solution, which the patient starts drinking about 1 hour before the examination. Retrograde contrasting of the rectosigmoid is normally not required, but is recommended for evaluating a possible infiltration of the colon in patients with suspicion of an advanced ovarian carcinoma (in such cases about 250 ml of the contrast solution are sufficient). The bladder should be well filled with urine. Since a precontrast examination is not required, CT starts directly with the intravenous bolus enhanced contrast study. It is important to ensure adequate contrast enhancement of both the arteries and the veins in order to facilitate the differentiation of suspicious lymph nodes from vascular structures. A digital radiogram for adjustment of the first scanning plane is not required. When conventional CT is used (i.e., without spiral technique), scanning should proceed from the floor of the pelvis in a cranial direction to make optimal use of the strong contrast enhancement of the uterus and ovaries in the early phase after application of the contrast agent.
KeywordsEndometrial Carcinoma Cervical Canal Pelvic Wall Zonal Anatomy Advanced Ovarian Carcinoma
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