Echogenicity: analysis, significance, and masking
نویسندگان
چکیده
منابع مشابه
Embedded DCT coding with significance masking
We evaluate two schemes for significance switching of DCT coefficients for block-based embedded DCT image compression. Both schemes deliver their best compression at any PSNR or vice versa, within a data stream that can be terminated within a few bits of any point. An image is partitioned into equal sized blocks, and a fixed point DCT of each block is calculated. The coefficients are then passe...
متن کاملAnalysis of background parenchymal echogenicity on breast ultrasound
The purpose of this study was to analyze the background parenchymal echotexture (BP echo) on breast ultrasound in detail and to evaluate the relation BP echo with menopausal status. In addition, we correlated BP echo with mammographic breast density (MGD) and background parenchymal enhancement (BPE) on magnetic resonance imaging (MRI).The institutional review board of our hospital approved this...
متن کاملAtheromatous plaque: quantitative analysis of the echogenicity of different layers.
INTRODUCTION AND OBJECTIVES Echographic studies of the composition of atheromatous plaque make use of the median gray level, which provides an overall measure of echogenicity. We propose adding an additional dimension to this approach by dividing the lesion into layers and generating a curve that shows the variation in echolucency with depth. METHODS Femoral and carotid plaque in asymptomatic...
متن کاملQuantitative analysis of echogenicity for patients with thyroid nodules
Hypoechogenicity has been described qualitatively and is potentially subject to intra- and inter-observer variability. The aim of this study was to clarify whether quantitative echoic indexes (EIs) are useful for the detection of malignant thyroid nodules. Overall, 333 participants with 411 nodules were included in the final analysis. Quantification of echogenicity was performed using commercia...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1981
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.137.3.471