138-139 / 1332
Advantages
•
Adenopathy
•
Defining Advanced disease
•
Monitoring Distant metastases
•
Planning placement of radiation ports
•
Guiding percutaneous biopsies
•
Electron density of tissues for dose
calculation algorithms
•
Image acquisition of less than 1 min in
multislice CT
•
Spatial relationship between
brachytherapy , uterus and other organs
visible.
•
Organs at risk: CT and MRI equal
Limitations
•
Ionizing radiation
•
Normal organ contours, borders between
organs and uterine parts not clearly visible
even after oral, rectal, i.v contrast
•
Tumour detection
•
Overestimation of early parametrial
spread
•
Early involvement of bladder wall and
vagina not reliable
•
Radiation changes
•
Cervix and residual disease
•
Target volumes based contouring
overestimated the contour width.
CT