MR imaging of the thyroid: correlation between apparent diffusion coefficient and thyroid gland scintigraphy
| Autor: | Yuji Murata, Hitoshi Shibuya, Isamu Ohashi, Yukio Hirata, Mikio Tezuka, Ryuji Ishida |
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| Rok vydání: | 2003 |
| Předmět: |
Male
endocrine system medicine.medical_specialty endocrine system diseases Pertechnetate Graves' disease Thyroid Gland Scintigraphy chemistry.chemical_compound Medicine Humans Radiology Nuclear Medicine and imaging Radionuclide Imaging Subacute thyroiditis Sodium Pertechnetate Tc 99m medicine.diagnostic_test business.industry Echo-Planar Imaging Thyroid Magnetic resonance imaging Middle Aged medicine.disease Thyroid Diseases medicine.anatomical_structure Diffusion Magnetic Resonance Imaging chemistry Female Radiology Thyroid function Radiopharmaceuticals Nuclear medicine business |
| Zdroj: | Journal of magnetic resonance imaging : JMRI. 17(2) |
| ISSN: | 1053-1807 |
| Popis: | Purpose To evaluate the usefulness of echo-planar MR imaging for assessing the thyroid function and confirm the clinical use of MR imaging for thyroid diseases. Materials and Methods Thirty-four patients with a variety of thyroid disorders (24 Graves disease; five subacute thyroiditis; five Hashimoto thyroiditis) were examined using T1-, T2-, and diffusion-weighted magnetic resonance (MR) imaging and thyroid scintigraphy with Tc-99m pertechnetate. Results The ADC values obtained from the diffusion-weighted images of the patients with Graves disease were significantly higher than those of patients with subacute hyroiditis and Hashimoto thyroiditis, though no difference among those disorders was observed on T1- and T2-weighted images. Based on the ADC value, anisotropy was not observed in the thyroid gland. An ADC value of 1.82 × 10−3 mm2/second or higher indicated the presence of Graves disease (sensitivity 75%, specificity 80%). Conclusion Diffusion-weighted MR images may be of value for the diagnosis of thyroid diseases and could be clinically important in the evaluation of thyroid function. J. Magn. Reson. Imaging 2003;17:163–169. © 2003 Wiley-Liss, Inc. |
| Databáze: | OpenAIRE |
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