| Texture analysis of sonographic features of the parotid gland in Sj?gren's syndrome. | |
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MedLine Citation:
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PMID: 8610577 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: The purpose of this study was to develop a method for quantitative analysis of the sonographic features of parotid glands as a noninvasive tool for the diagnosis of Sj?gren's syndrome. SUBJECTS AND METHODS: Sonographic texture analyses were performed on the parotid glands of 44 patients with Sj?gren's syndrome, 83 healthy volunteers, and 17 patients with chronic parotitis, using a fast Fourier transform program. RESULTS: Texture analysis of sonographic studies of the parotid gland using a Fourier transform showed that the sum of the normalized radial power spectrum in the low-spatial-frequency region (S value) of the parotid gland was significantly higher (p < .0001) in the patients with definite Sj?gren's syndrome [6.70 +/- 2.13 (x10(5))] than in the 72 age-matched normal volunteers [3.25 +/- 1.08 (x10(5))]. However, patients with probable Sj?gren's syndrome showed S values [3.92 +/- 1.88 (x10(5))] similar to those of the controls. On the other hand, SDs of the echo levels in the parotid gland showed significantly greater (p < .0001) values in patients with definite (4.63 1.07) and probable (4.53 1.47) Sj?gren's syndrome than in the normal controls (3.30 0.76). Discriminant analysis showed that a combination of these two distinctive values increased diagnostic accuracy to 96.9%. Furthermore, S values and SDs correlated well with the qualitative grading of sonographic features and with the gradings of sialography. CONCLUSION: The system we describe for texture analysis of sonographic images is useful in the diagnosis of Sj?gren's syndrome. |
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Authors:
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Y Ariji; M Ohki; K Eguchi; M Izumi; E Ariji; A Mizokami; S Nagataki; T Nakamura |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 166 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 1996 Apr |
Date Detail:
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Created Date: 1996-05-28 Completed Date: 1996-05-28 Revised Date: 2010-03-24 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 935-41 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, School of Dentistry, Nagasaki University, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Chronic Disease Diagnosis, Differential Female Fourier Analysis Humans Image Processing, Computer-Assisted Male Middle Aged Parotid Gland / radiography, ultrasonography* Parotitis / ultrasonography Sjogren's Syndrome / radiography, ultrasonography* |
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