Findings suggest that CESM offers superior clinical performance compared to MMG and use of CESM may decrease false negatives especially for women with dense breasts. BackgroundContrast-enhanced spectral mammography to compare clinical efficacy of contrast-enhanced spectral mammography (CESM) and conventional digital …

The mean areas under the receiver operating characteristic curve (AUCs) for digital mammography, CEM, AB MRI, and full MRI were 0.79, 0.91, 0.89, and 0.91, respectively. CEM was superior to digital mammography (P < .001). No evidence of a difference in AUC was found between CEM and AB MRI and MRI.

Chapter 3 Preparing digital mammography images for interpretation; Chapter 4 Image display and visualization in digital mammography; Chapter 5 PACS, storage, ... Effects of undersampling on the proper interpretation of modulation transfer function, noise power spectra, and noise equivalent quanta of digital imaging systems. …

The aim of this study was to evaluate the efficacy of contrast-enhanced spectral mammography (CESM) and digital breast tomosynthesis (DBT) in the diagnosis and chemotherapy of breast cancer. Material/Methods. ... Contrast-enhanced spectral mammography (CESM) is a new technique based on traditional radiography combined …

Contrast-enhanced spectral mammography (CESM) combines the benefits of full field digital mammography with the concept of tumor angiogenesis. Technique and practical applications of CESM are discussed. ... (CESM) is a relatively new tool in breast imaging armamentarium, which combines the benefits of full field digital …

Measurements of the NPS of two detectors for digital mammography are presented to illustrate some of the implications of the choices available. For both systems, two-dimensional noise power spectra obtained over a range of input fluence exhibit pronounced asymmetry between the orthogonal frequency dimensions.

Digital mammography (DM) offers a number of advantages compared to screen-film mammography, and advances in digital detectors have paved the way for exciting new technologies. ... Optimization of tungsten X-ray spectra for digital mammography: A comparison of model to experiment. Proc SPIE. 1997; 3032:411–8. …

Image quality of digital mammography system is generally defined by three primary physical parameters, namely, contrast, resolution, and noise. ... Modulation transfer function and noise power spectra measurements. MTF of the digital mammography system was measured using a slanted radiopaque edge placed at the detector input plane with grid in ...

This study have showed that contrast-enhanced digital mammography is a promising technique for screening women with higher-than-average risk for breast cancer. Li L, Roth R, Germaine P, et al. Contrast-enhanced spectral mammography (CESM) versus breast magnetic resonance imaging (MRI): a retrospective comparison in 66 …

Optimal x-ray spectra for digital mammography have been investigated in the previous works (Maria et al., 2014, Huda et al., 2003, ... Two digital mammography equipments were used in this study: Senographe 2000D (GE Medical Systems) and Lorad Selenia (Hologic). The Senographe 2000D system consists of an x-ray tube with Mo …

In this work, a Monte Carlo code was used to investigate the performance of different x-ray spectra in digital mammography, through a figure of merit (FOM), defined as FOM = CNR²/ (¯)D (g), with CNR being the contrast-to-noise ratio in image and [Formula: see text] being the average glandular dose. The FOM was studied for breasts …

Estimation of mean glandular dose for contrast enhanced digital mammography: factors for use with the UK, European and IAEA breast dosimetry protocols ... a Monte Carlo computer program has been used to calculate conversion factors for the high-energy spectra used for contrast enhanced digital mammography. The …

Ravaglia et al. also reported small differences in structured and electronic noise for different spectra in digital mammography systems . Grid use increased the structured noise component for all of the systems, but the increment was lower for systems D and E because these systems used moving grids.

X-ray spectra for standard mammography-quality beams, considering an anode/filter combination of Mo/Mo, for x-ray tube operating between 25 and 35 kVp. Cunha et al. (2013) obtained spectra employed in DM and CEDM, and transmission curves for Mo/Mo at 28 kVp and 35 kVp and forW/Cuat45kVpand49kVp,forX-rayspectraobtain-

This paper presents the optimized target – filter combinations to meet with the high image quality and the lowest possible average glandular dose in digital mammography based on amorphous selenium (a-Se) detector technology.Study also provides recommendations for target-filter combinations in digital mammography for different breast thicknesses.

In this work, a Monte Carlo code was used to investigate the performance of different x-ray spectra in digital mammography, through a figure of merit (FOM), defined as FOM = CNR²/(¯)D(g), with ...

DM and DBT images with clinical x-ray spectra showed realistic textures. These phantoms appear promising for clinical applications in quality assurance, image quality and dosimetry assessments. Fabrication of 3D printed patient-derived anthropomorphic breast phantoms for mammography and digital breast tomosynthesis: Imaging assessment with ...

CESM is based on dual-energy acquisition – a low energy spectrum, using standard mammography kV (28-32 kVp) and filtration (molybdenum), and higher energy (above the K-edge of iodine, 45-49 kVp), with stronger filtration (copper) 6 . The process is straightforward - iodinated contrast is given (a typical dose is 100 ml of iopamidol 300 at …

1. Introduction. The spectral distribution of X-ray beams from X-ray tubes is essential for quality control (QC) in mammography, in terms of image quality and patient dose [1–3].X-ray spectra can be used for accurate estimations of the peak voltage (KVp) of the tubes [], the energy fluence rate [], the inherent filtration [], the beam-hardening …

The use of a figure-of-merit (FOM) is a relatively new concept as a tool in digital mammography permitting quantitative assessment in terms of image quality and patient dose.

FFDM full-field digital mammography, CESM contrast-enhanced spectral mammography The original EUREF criteria are dichotomous and can only be answered with 'yes' or 'no'. In order to perform a more detailed analysis, we decided to use a five-point scoring scale, with '1' being the least favourable score and '5' the best possible ...

In this work, the Monte Carlo (MC) code PENELOPE was employed for simulation of x-ray spectra in mammography and contrast-enhanced digital mammography (CEDM). Spectra for Mo, Rh and W anodes were obtained for tube potentials between 24-36 kV, for mammography, and between 45-49 kV, for CEDM. …

Mammography Equipment. Fig. 16.1. Integrated direct digital mammography system. 1 X-ray tube, 2 X-ray beam, 3 compression paddle, 4 breast support, 5 detector, 6 C-arm, 7 monitor for angle, …

As a test case, the digital image of a bar pattern obtained from a digital mammography unit was postprocessed with three sharpening filters, incorporated in a widely available image processing tool. ... Noise power spectra of images from digital mammography detectors. Medical Physics. 1999; 26 (7):1279–1293. [Google Scholar] 26.

In digital mammography, the influence of x-ray spectra on image quality and dose to the breast has been studied using theoretical or experimental methods. Concerning the theoretical works, Fahrig and Yaffe ( 1994a, 1994b ) developed an analytical model to study spectra optimization in digital mammography.

Evaluation of low-energy contrast-enhanced spectral mammography images by comparing them to full-field digital mammography using euref image quality criteria. European radiology. 25, 2813–2820 ...

2.A. Monte Carlo simulation geometry for breast x‐ray imaging systems. The Monte Carlo N‐Particle radiation transport code (MCNP6) was used to generate x‐ray spectra for four commercial digital mammography (DM) systems, two commercial digital breast tomosynthesis systems (BT), and both commercial and prototype cone‐beam breast CT …

Rationale and Objectives: Contrast-enhanced spectral mammography (CESM) combines the benefits of full field digital mammogra-. phy with the concept of tumor angiogenesis. T echnique and practical ...

OBJECTIVE. The purpose of this study is to provide a more accurate estimation of the radiation dose of contrast-enhanced spectral mammography (CESM) relative to that of 2D digital mammography …

FIGURE 8-1 Improvements in mammography and breast x-ray imaging. On the left is a 2-dimensional (2D) full-field digital mammogram (acquired after tomosynthesis study). On the middle left is a 2D synthetic mammogram created from the digital breast tomosynthesis examination on the middle right; shown is a 1-mm focal plane image of …