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| Elastography for Thyroid Nodules: The Comparison of
Diagnostic Performance on Transverse and Longitudinal
Planes |
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| Hee Jung Moon, MD Jin Young Kwak, MD, PhD, Eun-Kyung Kim, MD, PhD |
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| Department of Radiology, Research Institute of Radiological Science, Yonsei University
College of Medicine, Seoul, Korea |
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| Purpose: To evaluate the diagnositc performance of elastography for thyroid nod-
ules on the transverse and longitudinal planes.
Materials and Methods: Gray scale ultrasonography (US), elastography on trans-
verse and longitudinal planes, and fine needle aspiration biopsy for 78 thyroid nodules
(malignant: 34 cases, benign: 44 cases) were performed. According to the Asteria cri-
teria of elastography, scores 1 and 2 were classfied as probably benign and scores 3
and 4 were classifeid as suspicious. Strain ratios on transverse and longitudinal
planes were measured. Sensitivity, specificity, positive predictive value, negative pre-
dictive value, accuracy, and Az value (under the receiver operating characteristics
curve) of elastography on transverse and longitudinal planes were calculated and
compared.
Results: Scores 3 and 4 were more frequently seen in malignant nodules on the
longitudinal plane (p value = 0.007), but not significantly seen on the transverse plane
(p value = 0.160). Sensitivity, specificity, positive predictive value, negative predictive
value, accuracy, and the Az value of elastography on the longitudinal plane were high-
er than those on the transverse plane, although Az values on the transverse and long-
tudinal planes were not statistically significant.
Conclusion: Diagnostic performance of thyroid elastography, especially sensitivity,
were higher on the longitudinal plane than the transverse plane. |
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| Keyword : Thyroid: Ultrasonography; Elastography; Thyroid malignancy |
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pdf파일 : 011-16문희정.pdf 
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> Journal > Journal Search 
Journal of Korean Society of Ultrasound in Medicine 2012 ; 31 (1) : p.11-16
