Thyroid uptake and scintigraphy using 99mTc pertechnetate: standardization in normal individuals
São Paulo med. j
;
120(2): 45-48, Mar. 2002. ilus, graf
Artigo
em Inglês
| LILACS
| ID: lil-320714
ABSTRACT
CONTEXT: Thyroid uptake and scintigraphy using 99mTc-pertechnetate has proven to be more advantageous than with 131I-iodide, since the images have better quality, the procedure is faster and the patient is submitted to a lower radiation dose. OBJECTIVE: The purpose of this study was to standardize a simple and fast methodology for performing thyroid uptake and scintigraphy and to determine the normal values for 99mTc- pertechnetate uptake. TYPE OF STUDY: Prospective, non-randomized. SETTING: Division of Nuclear Medicine, Department of Radiology, School of Medical Sciences, Campinas State University. PARTICIPANTS: The study consisted of 47 normal individuals, 30 women and 17 men, with ages ranging from 19 to 61 years (mean of 33 years). PROCEDURES: The laboratory assessment of thyroid function consisted of serum dosages of ultra-sensitive thyroxin and thyrotrophin. Twenty minutes after an intravenous injection of 10 mCi (370 MBq) of 99mTc-pertechnetate, the images were obtained on a computerized scintillation camera equipped with a low-energy high-resolution parallel hole collimator. RESULTS: All the individuals were euthyroid both on clinical and laboratory evaluation. The baseline thyroid 99mTc-pertechnetate uptake ranged from 0.4 to 1.7 percent. The uptake values obtained in these normal individuals showed that 95 percent presented a thyroid uptake that ranged from 0.4 to 1.5 percent of the injected dose. CONCLUSION: The assessment of thyroid structure and function using 99mTc-pertechnetate is a simple, fast and efficient method, which could easily become a part of the routine studies in nuclear medicine laboratories
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Glândula Tireoide
/
Tiroxina
/
Tireotropina
/
Pertecnetato Tc 99m de Sódio
/
Compostos Radiofarmacêuticos
Tipo de estudo:
Ensaio Clínico Controlado
/
Estudo observacional
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
São Paulo med. j
Assunto da revista:
Cirurgia Geral
/
Cincia
/
Ginecologia
/
Medicina
/
Medicina Interna
/
Obstetr¡cia
/
Pediatria
/
Sa£de Mental
/
Sa£de P£blica
Ano de publicação:
2002
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Campinas State University/BR
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