'Shine through' on dual tracer parathyroid scintigraphy: A potential pitfall in interpretation

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7 Scopus citations

Abstract

Dual tracer scintigraphy has become the procedure of choice for preoperative localization of parathyroid adenomas. The typical protocol used by most laboratories is to initially perform a Tc-99m sestamibi (MIBI) study with early and delayed (2-3 hours) washout phase images. This is followed by a thyroid-specific Tc-99m pertechnetate study. A potential pitfall exists if the delayed phase of the initial MIBI study shows an intense, abnormal focus of retention. This focus may interfere with interpretation of the subsequent pertechnetate study because of a "shine through" effect. To differentiate a parathyroid adenoma from a thyroid adenoma, it may be necessary to repeat the thyroid-specific pertechnetate scan on a separate day after the dual tracer study.

Original languageEnglish (US)
Pages (from-to)145-149
Number of pages5
JournalClinical nuclear medicine
Volume30
Issue number3
DOIs
StatePublished - Mar 1 2005

Keywords

  • Parathyroid adenoma
  • Parathyroid scan
  • Thyroid adenoma

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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