CLINICAL REPORT Parathyroid Lesions: Characterization with Dual-Phase Arterial and Venous Enhanced CT of the Neck
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چکیده
A.R. Gafton C.M. Glastonbury J.D. Eastwood J.K. Hoang SUMMARY: This clinical report describes the enhancement characteristics of hypersecreting parathyroid lesions on dual-phase neck CT. We retrospectively analyzed the enhancement characteristics of 5 pathologically confirmed PTH-secreting lesions on dual-phase CT examinations. Attenuation values were measured for PTH-secreting lesions, vascular structures (CCA and IJV), and soft tissue structures (thyroid gland, jugulodigastric lymph node, and submandibular gland). From the attenuation values, “relative enhancement washout percentage” and “tissue-vascular ratio” were calculated and compared. All lesions decreased in attenuation from arterial to venous phase, while the mean attenuation values of other soft tissue structures increased. A high relative enhancement washout percentage was correlated with parathyroid lesions (P .006). The tissue-CCA ratio and tissue-IJV ratio for PTHsecreting lesions in the arterial phase were statistically significantly higher compared with soft tissue structures (P .05). If these results are validated in future larger studies, noncontrast and delayed venous phases of 4D-CT could be eliminated to markedly reduce radiation exposure.
منابع مشابه
Parathyroid lesions: characterization with dual-phase arterial and venous enhanced CT of the neck.
This clinical report describes the enhancement characteristics of hypersecreting parathyroid lesions on dual-phase neck CT. We retrospectively analyzed the enhancement characteristics of 5 pathologically confirmed PTH-secreting lesions on dual-phase CT examinations. Attenuation values were measured for PTH-secreting lesions, vascular structures (CCA and IJV), and soft tissue structures (thyroid...
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