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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: J Vasc Interv Radiol. 2010 Aug;21(8 Suppl):S257–S263. doi: 10.1016/j.jvir.2010.05.003

Table 4.

When to use tracking during ablation or biopsy:

  1. Lesions seen only on arterial phase.

  2. Lesion margins seen best on MRI sequence.

  3. Lesions best identified with PET/CT.

  4. Localizing specific part of tumor for biopsy (only part of tumor hot on PET)

  5. Lesions not seen at all on ultrasound

  6. Composite ablations requiring multiple needle insertions, complex geometries or difficult treatment plan.

  7. Localization of tumor tissue at risk for under-heating near the end of a treatment.

  8. Identification of safest pathway, given complex angle of insertion

  9. Dome lesions

  10. Lesions under ribs

  11. During “gas out” from tissue cooking