What equipment is needed to perform breast cancer lymphoscintigraphy (sentinel lymph node mapping)?

Updated: Dec 13, 2018
  • Author: Durre Sabih, MBBS, MSc, FRCP(Edin); Chief Editor: Mahan Mathur, MD  more...
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Answer

Answer

Lymphoscintigraphy equipment includes the following:

  • Syringes with needles of appropriate gauge, usually 25-G insulin syringes (see the image below)

    Injecting syringe. Injecting syringe.
  • Syringe shields

  • Tc-99m radiopharmaceutical: antimony trisulphide, particle size 0.015-0.3 µm; nanocolloid, particle size 0.05-0.8 µm; sulfur colloid, particle size 0.22 µm; or tilmanocept (Lymphoseek) [14]

  • Alcohol swabs and other material used during and after injections (see the image below)

    Injection tray containing the radioactive dose in Injection tray containing the radioactive dose in a syringe shield, alcohol swabs, bandage, and dry cotton.
  • Gamma camera and imaging system

  • Gamma-detecting probe (see the image below)

    Gamma probe with a highly collimated handheld dete Gamma probe with a highly collimated handheld detecting wand, which is covered with a sterile cover for use within the surgical field.

The camera should be equipped with a low-energy, high-resolution collimator and should be peaked at 140 KeV with a 20% window centered over the peak. A small magnification (1.35) is often used.


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