AROI-ESTRO GYN Teaching Course

Nodal CTV

Ultrasmall Particles of Iron Oxide (USPIO) data

Taylor A et al., IJROBP 2005

20 patients, gynae cancer USPIO administered All nodes outlined – 61 nodes / patient – 1 to 12 mm short axis Muscle and bone excluded

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•

3D margin around vessels (mm )

3

5

7

10

15

Nodal coverage

56 %

76 %

88 %

94 % 99 %

147 cm 3

190 cm 3

266 cm 3

Bowel V in PTV

-

-

7 mm margin with minor adjustments: 99 % coverage of lymph nodes

Taylor A, Rockal AG, Reznek RH et al. Mapping pelvic lymph nodes: guidelines for delineation in intensity- modulated radiotherapy. Int. J. Radiation Oncology Biol. Phys., Vol 63.no.5, 1604-1612, 2005.