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Ultrasonography is a cheap and quick non-invasive medical imaging technique, used as a diagnostic method for autoimmune thyroiditis. Another important diagnostic method for this chronic inflammation is measuring the increased level of thyroid antibodies (anti-thyroid peroxidase (TPOAb) and/or anti- thyroglobulin (TgAb)) in blood samples. This paper shows that B-mode ultrasound images contain weak information related to the presence or absence of these antibodies. Ultrasound image analysis is based on textural recognition using probabilistic spatial features. Two studies are performed. The results of the first study show that the spatial texture features we used contain weak information about the presence or absence of TPOAb and TgAb antibodies as measured by conditional entropy. In the second study, a classifier derived from Bayesian decision theory is tested on a set of 2820 sonograms of 94 subjects. The training set contains 67 subjects and the test set consists of 27 independent subjects. The results of classification to three classes (healthy, thyroiditis with positive antibody test, thyroiditis with negative antibody test) achieved sensitivity 29% and specificity 100% on the test set.
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Tom
Strony
67--82
Opis fizyczny
Bibliogr. 17 poz., il., wykr.
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autor
autor
autor
- 3rd Department of Medicine, 1st Medical Faculty, Charles University, Prague
Bibliografia
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- [2] Solbiati L., Volterrani L., Rizzatto G., et al.: The thyroid gland with low-uptake lesions: Evalution by ultrasound. Radiology, 155: 187-196, 1985.
- [3] Warftsky L., Ingbar S. H.: Disease of the thyroid. In Harrison's Principles of Internal Medicine, page 1712. McGraw-Hill, New York, 12th edition, 1991.
- [4] Scott David W.: Multivariate Density Estimation: Theory, Practice, and Visualization. Wiley Series in Probability and Mathematical Statistics. John Wiley & Sons, Chichester, 1992.
- [5] Muzzolini R., Yang Y.-H., Pierson R.: A multiresolution texture segmentation with application to diagnostic ultrasound images. IEEE Transactions Medical Imaging, 12(l): 108-123, 1993.
- [6] Muzzolini R., Yang Y.-H., Pierson R.: Texture characterization using robust statistic. Pattern Recognition, 27(1):119-134., 1994
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- [8] Jaeger C., Hathiagelaki E., Petzoldt R.: Comparative analysis of organ specific autoantibodies and celiac disease-associated antibodies in type 1 diabetic patients, their first degree relatives, and healthy control subjects. Diabetes Care, 24(l): 27-32, 2001.
- [9] Šara R., Smutek D., Sucharda P., Svačina Š.: Systematic construction of texture features for Hashimoto's lymphocytic thyroiditis recognition from sonographic images. In S. Quaglini, P. Barahona, and S. Andreassen, editors, Artificial Intelligence in Medicine, LNCS, Berlin-Heidelberg, Germany. Springer, 2001.
- [10] Duda R. O., Hart P. E., Stork D. G.: Pattern Classification. Wiley, New York, second edition, 2001.
- [11] Larsen P. R., Kronenberg H. M., Melmed S., Polonsky K. S.: Williams textbook of endocrinology. Saunders, Elsevier Science (USA), tenth edition, 2002.
- [12] Smutek D., Šara R., Sucharda P., Tjahjadi T., Švec M.: Image texture analysis of sonograms in chronic inflammations of thyroid gland. Ultrasound in Medicine and Biology, 29(11): 1531-1543, 2003.
- [13] Schulz S. L., Seeberger U., Hengstmann J. H.: Color doppler sonography in hypothyroidism. European Journal of Ultrasound, 16(3): 183-189, February, 2003.
- [14] Tune R., Gonen M. S., Acbay O.: Autoimmune thyroiditis and anti-thyroid antibodies in primary Sjogren's syndrome: a case-control study. Ann. Rheum. Dis, 63: 575-577, May, 2004.
- [15] Loy M., Cianchetti M. E., Cardia F., Melis A., Boi F., Mariotti S.: Correlation of computerized gray-scale sonographic findings with thyroid function and thyroid autoimmune activity in patients with Hashimoto's thyroiditis. Journal of Clinical Ultrasound, 32(3): 136-140, 25 Feb., 2004.
- [16] Kratzsch J., Fiedler G. M., Leichtle A.: New reference intervals for thyrotropin and thyroid hormones based on national academy of clinical biochemistry criteria and regular ultrasonography of the thyroid gland. Clinical Chemistry, 51 (8): 1480-1486, 2005.
- [17] Svec M., Šara R., Smutek D.: On reproducibility of ultrasound image classification. In J. S. Marques, N. P. de la Blanca, and P. Pina, editors, Pattern Recognition and Image Analysis. Second Iberian Conference, IbPRIA 2005. Proceedings, Part II, volume 3523, pages 439-446, Berlin, Germany, June. Springer-Verlag, 2005.
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BWAD-0015-0003