Thyroid angiography

Mojab, K; Ghosh, Bimal C.

doi:10.1016/0002-9610(76)90357-3

Cited by 4 publications

(1 citation statement)

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“…This contrasts sharply with the other methods of absolute blood flow measurement, such as EMF. For some applications, the vascularity indices obtained with radionuclide uptake techniques may yield satisfactory data, although normal vascularity levels have been reported in many patients with toxic uninodular goiter [6], lesions which angiographic studies have described as being highly vascular [12,13]. Woodcock et al [4] have previously reported increased low frequency Doppler-shift signals from such lesions, in contrast to the large high-frequency Doppler shift signals obtained from a follicular carcinoma.…”

Section: Discussionmentioning

confidence: 99%

Duplex scan‐derived thyroid blood flow in euthyroid and hyperthyroid patients

et al. 1988

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Using a high‐resolution real‐time scanner to locate the superior thyroid artery (STA), the absolute blood flow has been measured with a pulsed Doppler flow meter. The diameter of the vessel and the angle of inclination of the ultrasound beam to the axis of the vessel were measured from the real‐time image and the blood flow then computed in the on‐board computer. Vessel diameter measurements were performed by the computer to 1/10 mm and all examinations were performed under identical conditions. In 24 randomly selected, clinically and biochemically euthyroid, preoperative, general surgical patients on no drugs (12 males, 12 females; age range, 18–65) the STA was located and blood flow measured in 46 arteries (96%). Mean blood flow was 18.3 ml/min ± 6.0 SD (range, 5.8–29.2). Bilateral measurements were made in 20 of 22 (5 males, 17 females; range 27–80 years) hyperthyroid patients. Mean blood volume flow was 73.0 ml/min±34.3 SD (range, 30–140), significantly higher (p < 0.01) than in the euthyroid group. No sex differences were seen. For euthyroid and thyrotoxic patients together, thyroid blood flow correlated with FT4 (r = 0.77,p <0.001), and, in the thyrotoxics, blood flow was significantly correlated with FT3 (r = 0.51,p <0.05), 4‐hr123I uptake (r =0.60,p <0.01), and 48‐hr123I uptake (r =0.63,p < 0.01), but not with FT4 (r = 0.40). The within artery coefficient of variation for volume flow was 17.4% for euthyroid subjects and 24.4% for hyperthyroid subjects. However, the mean comparable coefficient of variations for time‐averaged velocity were 9.2% and 13.8%, respectively. It is concluded that this noninvasive Duplex scanning method for measuring thyroid blood flow is accurate, reproducible, suitable for examining this parameter in relation to thyroid disease and drug effects, and may have a role to play in the management of patients with hyperthyroidism.

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Section: Discussionmentioning

confidence: 99%

Duplex scan‐derived thyroid blood flow in euthyroid and hyperthyroid patients

et al. 1988

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Management of thyroid nodules. I: History and physical examination, blood tests, x‐ray tests, and ultrasonography

1981

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The approach to the management of the thyroid nodule remains controversial. Confusion exists because virtually any thyroidal disease can present as a clinically solitary nodule which means there is no uniformity regarding natural history, incidence, prevalence, epidemiology, and pathophysiology.. The variety of definitions of thyroid nodules and thyroid carcinoma and the different modes of study selection and individual bias add to the confusion. Diagnostic approaches have not yielded a completely reliable technique to differentiate benign from malignant thyroidal disease. A history of neck irradiation of cervical lymphadenopathy significantly increases the chance of thyroid malignancy, but other parameters of the history or physical examination as well as blood tests are unreliable. Ultrasound displays anatomic but not histologic features. X-ray techniques (plain films, computed tomographic scans, xeroradiography, chest x-ray, barium swallow, lymphography, and angiography) have been used to visualize thyroid nodules, with some techniques proving more useful than others.

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