Planning And Positioning In Mri Pdf Download
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The portion of the uterus that can be included on CT scans depend on the patient anatomy and the slice thickness. The pelvic inlet needs to be included which can be done using the three-arches protocol. The inferior limits of the uterus correspond to the slice where the aorta crosses the midline. The inferior limits should include the prostatic capsule and assure a perpendicular orientation of the uterus to the pelvis in the transverse plane.
Multiplan provides a flexible software environment that supports the planning of neoadjuvant RT or simultaneously integrated therapy. The pre-op period is a critical time for assessment of the disease and treatment alternatives in uterine cervical cancer. To achieve better clinical outcomes, the timely integration of multi-modality imaging, such as ultrasound, MRI, and PET/CT imaging, is essential. Preoperative workup is essential for staging of tumor, defining the extent of the disease, and in evaluating for occult metastases. This is important as in cervical cancer, the lymph node involvement is the strongest predictor for vaginal tumor recurrence. Additionally, the ability to detect recurrent disease earlier could potentially improve treatment outcomes. Preoperative imaging has the potential to significantly affect the accuracy and time required to initiate therapy. If a new imaging modality becomes available, the appropriate imaging sequence is combined with the standard CT and MRI protocols of the institution to create a robust protocol for both diagnosis and treatment planning. New imaging data should be used in conjunction with the current data in order to verify the staging of disease. While standardized guidelines recommend the evaluation of nodal metastases, there is no clear indication of when and how these sites should be evaluated. The guidelines differ between institutions, and further research is needed to determine the reliability of different imaging modalities for evaluation of nodal metastases in cervical cancer. d2c66b5586