Yttrium-90 distribution following radiosynoviorthesis of the knee joint in rheumatoid arthritis patients: a SPECT/CT study.
Ann Nucl Med
; 28(7): 688-92, 2014 Aug.
Article
en En
| MEDLINE
| ID: mdl-24595462
OBJECTIVE: To examine yttrium-90 distribution 1 and 72 h following its injection into a knee joint in patients with rheumatoid arthritis (RA). METHODS: In 14 RA patients we injected yttrium-90 into the affected knee joint using lateral approach. To assess the radioisotope distribution in the joint, the superimposed sequential SPECT and CT imaging was performed 1 and 72 h after the injection. We analyzed the percentage of radioisotope distribution in three predefined compartments of the knee joint (lower, upper medial, upper lateral). RESULTS: After 1 and 72 h, the mean percentage distributions were, respectively, 7.14 and 23.07% in lower; 21.42 and 15.38% in upper medial, and 71.42 and 61.53% in upper lateral compartment. The percentage of isotope deposition did not change significantly with time in any of the compartments (all p > 0.26). The deposition of isotope, both at 1 and 72 h, was significantly greater in upper lateral compartment, where the injection was performed, than in all other compartments (all p < 0.05). CONCLUSIONS: Using the SPECT/CT hybrid method, we proved that the majority of isotope is located at the compartment adjacent to the injection. Two injections targeting different compartments might improve the clinical efficacy of the procedure.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Artritis Reumatoide
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Tomografía Computarizada por Rayos X
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Tomografía Computarizada de Emisión de Fotón Único
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Sinovectomía
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Articulación de la Rodilla
Límite:
Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Ann Nucl Med
Asunto de la revista:
MEDICINA NUCLEAR
Año:
2014
Tipo del documento:
Article
Pais de publicación:
Japón