2003
DOI: 10.1097/00006231-200307000-00002
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Estimation of thyroid mass in Gravesʼ disease by a scintigraphic method

Abstract: scintigraphic method for the estimation of the thyroid mass in patients with Graves' disease is described. The method was first standardized using thyroid phantoms with eight different volumes ranging from 5 to 110 cm(3). The planar and single photon emission computed tomography (SPECT) images of each phantom were acquired with four different activities [3.7 MBq (100 microCi), 11.1 MBq (300 microCi), 22.2 MBq (600 microCi) and 37 MBq (1.0 mCi) of 99mTc-pertechnetate] with a 20% window symmetrically placed over… Show more

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Cited by 18 publications
(28 citation statements)
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“…The area of the frontal silhouette of the lobe in square millimetres and the height of the lobe in millimetres were noted. The volume of the gland was calculated using the method of Pant et al [25] in patients with Graves' disease.…”
Section: Estimation Of Thyroid Massmentioning
confidence: 99%
“…The area of the frontal silhouette of the lobe in square millimetres and the height of the lobe in millimetres were noted. The volume of the gland was calculated using the method of Pant et al [25] in patients with Graves' disease.…”
Section: Estimation Of Thyroid Massmentioning
confidence: 99%
“…Há descrições da importância do uso do método cintilográfico na mensuração da massa da tireoide como alternativa ao método ultrassonográfico, evitando a total dependência deste, como publicado por Pant e cols. (5). Embora seja bastante relevante a diferença entre as massas estimadas pelos diferentes métodos de imagem, poucos estudos procuraram dar a devida atenção a esse tópico, bem como a suas implicações.…”
Section: Discussionunclassified
“…Foi realizada avaliação de massa glandular pela USG e pela cintilografia. Como exemplificado na figura 1, o cálculo de massa pela USG foi feito pelo método do elipsoide, em que o volume de cada lobo, considerado uma estrutura ovoide, é definido pelo produto da medida dos diâmetros anteroposterior (AP), transversal (T) e longitudinal (L) multiplicado pelo fator de correção 0,523 (5).…”
Section: Sujeitos E Métodosunclassified
“…SPECT is used in image analysis studies to extract information about areas and volumes or amounts of radioactivity in specific regions of interest. The information that derived from these studies is then applied to aid in clinical diagnoses or even to estimate radiation dosimetry or determination of volume or mass (De Sadeleer et al, 1996;Erdi et al, 1995;Pant et al, 2003;). Many methods for precise and accurate measurements of volume and the amount of radioactivity in a specific region of interest are used (Boudraa & Zaidi, 2006;Hansen, 2002a).…”
Section: Volume Data In Nuclear Medicinementioning
confidence: 99%
“…Gradient shading was used to surface images, by a gradient factor up to 5% low. Determination of thyroid volume leads to the calculation of the thyroid mass and the accurate activity to be administered for patient specific therapeutic purposes (Pant et al, 2003). …”
Section: Thyroid Studies-3d Surface Imagesmentioning
confidence: 99%