Clinical nuclear medicine
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Clinical nuclear medicine · Jun 2002
Case ReportsSoft tissue metastases and lung cancer recurrence detected by Tc-99m depreotide scintigraphy.
A 63-year-old woman with previously treated stage I lung cancer was reexamined 5 years later for recurrence. A conventional work-up using computed tomographic scanning and transbronchial biopsy showed nothing abnormal. A Tc-99m depreotide scan, however, led to a noninvasive diagnosis of lung cancer recurrence with metastases, and it directed a noninvasive tissue diagnosis.
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Clinical nuclear medicine · Feb 2002
Tc-99m ethylcysteinate dimer brain SPECT perfusion imaging in ictal nonepileptic visual hallucinations.
Visual hallucinations can occur within the central nervous system and may be associated with a lesion anywhere in the visual pathway. The purpose of this study was to assess "ictal" regional cerebral blood flow with Tc-99m ethylcysteinate dimer (ECD) SPECT in patients having acute hallucinations, and to compare the findings to the "interictal" state. ⋯ This prospective preliminary study suggests that brain imaging using SPECT may be useful in identifying the mechanisms and evolution of blood flow abnormalities in certain subgroups of patients who have visual hallucinations and may assist in the selection of specific therapy.
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Clinical nuclear medicine · Feb 2002
Effect of high specific-activity sulfur colloid preparations on sentinel node count rates.
Preliminary results by other investigators suggest that increasing the specific activity of Tc-99m nanocolloid preparations increases the measured counts in sentinel nodes compared with lower specific-activity (SA) preparations using the same initial injected dose. The authors set out to determine whether a similar result could be perceived with Tc-99m sulfur colloid (SC) preparations. ⋯ These preliminary results suggest higher counts in the sentinel node are possible with a higher SA preparation.