Percutaneous CT lymphography with perflubron: imaging efficacy in rabbits and monkeys.
PURPOSE: To evaluate the imaging efficacy of percutaneous lymphography performed with injection of perflubron emulsions and computed tomography (CT). MATERIALS AND METHODS: Thin-section CT was used to image lymph nodes in 116 rabbits and six monkeys. Quantitative measures of regional lymph node enhancement were obtained 4 hours to 21 days after subcutaneous injection of perflubron (0.1-0.5 mL per injection site). Lymph node enhancement was calculated in Hounsfield units and converted to bromine concentration with standards that were imaged at the same time. RESULTS: Excellent enhancement of regional lymph nodes in both groups of animals was obtained. Nodal enhancement was linearly related to dose and was sustained for 20 days; maximum enhancement was seen 2 days after injection. Massage of the injection site increased delivery of the perflubron emulsion to regional lymph nodes. CONCLUSION: In rabbits and monkeys, percutaneous CT lymphography effectively depicts the intranodal distribution of macrophages in normal lymph nodes.[1]References
- Percutaneous CT lymphography with perflubron: imaging efficacy in rabbits and monkeys. Wolf, G.L., Rogowska, J., Hanna, G.K., Halpern, E.F. Radiology. (1994) [Pubmed]
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