Application of Tc-99m-tetrofosmin as a tumor imaging agent: comparison with Tl-201.
Tc-99m-tetrofosmin SPECT was performed on 6 occasions in 4 patients with hypopharyngeal carcinoma, lung carcinoma, esophageal carcinoma and maxillary plasmocytoma and compared with Tl-201 SPECT. All lesions accumulated both Tc-99m-tetrofosmin and Tl-201. Early uptake ratios of Tc-99m-tetrofosmin were about 2 but those of Tl-201 were much higher (more than 3). Washout rates of Tc-99m-tetrofosmin were higher than those of Tl-201. There was a good positive correlation between the early uptake ratio of Tc-99m-tetrofosmin and that of Tl-201. The delayed uptake ratio and washout rate showed poor correlation. In conclusion, early uptakes of both the agents were similar but their retention patterns were different. Tc-99m-tetrofosmin may be used for tumor imaging though more studies are required to evaluate diagnostic accuracy and the significance of delayed images.
Arbab
A S
AS
Department of Radiology, Yamanashi Medical University, Japan.
Koizumi
K
K
Arai
T
T
Toyama
K
K
Araki
T
T
D000368:Aged; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D007012:Hypopharyngeal Neoplasms / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000000981:diagnostic imaging; D008207:Lymphatic Metastasis; D008297:Male; D008444:Maxillary Sinus Neoplasms / Q000000981:diagnostic imaging; D008657:Metabolic Clearance Rate; D008875:Middle Aged; D009369:Neoplasms / Q000000981:diagnostic imaging*; D009943:Organophosphorus Compounds / Q000493:pharmacokinetics; D015609:Organotechnetium Compounds / Q000493:pharmacokinetics; D010954:Plasmacytoma / Q000000981:diagnostic imaging; D013794:Thallium Radioisotopes / Q000493:pharmacokinetics; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
D009943:Organophosphorus Compounds; D015609:Organotechnetium Compounds; D013794:Thallium Radioisotopes; C078700:technetium tc-99m tetrofosmin