Study of SPECT/CT planar and tomography imaging in the diagnosis of postoperative lung metastasesof differentiated thyroid carcinoma

doi:10.3877/cma.j.issn.1674-0793.2017.05.011

Abstract

Abstract:

Objective

To compare the diagnostic values of SPECT/CT planar and tomography imaging in postoperative lung metastases of differentiated thyroid carcinoma.

Methods

Sixty-four cases with suspected postoperative lung metastasis of differentiated thyroid carcinoma from January 2012 to October 2016 were retrospectively analyzed in the Third Affiliated Hospital of Sun Yat-sen University. All patients were given SPECT/CT planar and tomography imaging, and the diagnostic results of SPECT/CT planar and tomography imaging in postoperative lung metastases of differentiated thyroid carcinoma were statistically analyzed.

Results

Among the 64 cases, there were 48 cases of postoperative lung metastases of differentiated thyroid carcinoma, and 16 non pulmonary metastasis. SPECT/CT planar imaging showed lung metastasis in 40 cases, of which 12 were false positive, and non pulmonary metastasis in 24 cases, of which 20 were false negative. SPECT/CT tomographic imaging diagnosed lung metastasis in 52 cases, of which 48 cases were true positive, and non pulmonary metastasis in 12 cases, of which 4 were false positive. The sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of SPECT/CT tomographic imaging of postoperative lung metastases of differentiated thyroid carcinoma were significantly higher than that of SPECT/CT planar imaging (χ²=12.63, 4.00, 11.14, 3.92, 11.25, P=0.032, 0.033, 0.024, 0.042, 0.013) .

Conclusion

The diagnostic value of SPECT/CT tomography imaging in postoperative lung metastases of differentiated thyroid carcinoma is higher than SPECT/CT planar imaging, and is worthy of promotion in the clinic.

Key words: Differentiated thyroid carcinoma, Lung metastasis, SPECT/CT planar imaging, SPECT/CT tomography

Feng Zhang, Liangjun Xie, Yudao Chen, Muhua Cheng. Study of SPECT/CT planar and tomography imaging in the diagnosis of postoperative lung metastasesof differentiated thyroid carcinoma[J]. Chinese Archives of General Surgery(Electronic Edition), 2017, 11(05): 340-343.

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References 18

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诊断方法	例数	敏感度	特异度	准确性	阳性预测值	阴性预测值
SPECT/CT平面显像	64	58.3	25.0	50.0	70.0	16.7
SPECT/CT断层显像	64	100.0	75.0	93.8	92.3	100.0
χ²值		12.63	4.00	11.14	3.92	11.25
P值		0.032	0.033	0.024	0.042	0.013

诊断方法	例数	敏感度	特异度	准确性	阳性预测值	阴性预测值
SPECT/CT平面显像	64	58.3	25.0	50.0	70.0	16.7
SPECT/CT断层显像	64	100.0	75.0	93.8	92.3	100.0
χ²值		12.63	4.00	11.14	3.92	11.25
P值		0.032	0.033	0.024	0.042	0.013

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