[Usefulness of imaging method without using lead plate for sentinel lymph node scintigraphy]

Kaku Igaku. 2002 May;39(2):161-9.
[Article in Japanese]


Purpose: In scintigraphy of the sentinel lymph node, it is common to use a lead plate as a shield to reduce star artifact and scattered radiation in the portion surrounding the injected site of radioactive colloid. We have developed an imaging method without using a lead plate, and examined its usefulness in phantom and clinical imagings.

Methods, results: Star artifact was eliminated using a medium energy collimator. Effects of scattered radiation from the injection site were reduced by setting energy window at higher level.

Conclusions: Our method without using a lead plate can be applied to dynamic data acquisition and imaging of a portion where it is difficult to place a lead plate. It also seems to be a useful imaging method in that it takes patients' feelings into consideration.

MeSH terms

  • Artifacts
  • Breast Neoplasms / diagnostic imaging*
  • Humans
  • Lymph Nodes / diagnostic imaging*
  • Radionuclide Imaging / methods*
  • Scattering, Radiation
  • Sensitivity and Specificity