Thyroid nodule other imaging findings: Difference between revisions
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** Most benign nodules | ** Most benign nodules | ||
** Most malignant thyroid nodules | ** Most malignant thyroid nodules | ||
Posttherapy whole-body iodine scanning is typically conducted approximately 1 week after RAI therapy to visualize metastases. | |||
=== FDG-PET scan === | === FDG-PET scan === | ||
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There is insuffiecient evidence to recommend to or against routine clinical use | There is insuffiecient evidence to recommend to or against routine clinical use | ||
==== Iodine 131 single photon emission computed tomography (SPECT)=CT fusion imaging ==== | |||
may provide superior lesion localization after remnant ablation, but it is still a relatively new imaging modality | |||
==References== | ==References== | ||
Revision as of 16:27, 12 August 2017
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Thyroid nodule Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Thyroid nodule other imaging findings On the Web |
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American Roentgen Ray Society Images of Thyroid nodule other imaging findings |
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Risk calculators and risk factors for Thyroid nodule other imaging findings |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Other Imaging Studies
Radionuclide thyroid scan/scintigraphy
using either technetium 99 mTc pertechnetate or 123I
radionuclide scan is contraindicated during pregnancy
Thyroid scintigraphy is useful to determine the functional status of a nodule. It is specifically indicated in patients with thyroid nodule and a low serum TSH to determine if the nodule is autonomously functioning.
In scintigraphy, iodine radioisotopes (more commonly used; usually 123I) or technetium pertechnetate (99Tc), are injected to the patient and then the radioisotope uptake time by the thyroid gland is measured.4406304 16910877
- High radioisotopes uptake=Hot nodule:
- Hyperfunctioning nodules
- Low radioisotopes uptake=Cold nodule:
- Most benign nodules
- Most malignant thyroid nodules
Posttherapy whole-body iodine scanning is typically conducted approximately 1 week after RAI therapy to visualize metastases.
FDG-PET scan
improve diagnostic accuracy of indeterminate thyroid nodules
In patients with thyroid PET incidentaloma, the incidence of primary thyroid malignancy is very high
24902804
There is insuffiecient evidence to recommend to or against routine clinical use
Iodine 131 single photon emission computed tomography (SPECT)=CT fusion imaging
may provide superior lesion localization after remnant ablation, but it is still a relatively new imaging modality