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Articles by Andreas Boss
Mammographic Vascular Microcalcifications as a Surrogate Parameter for Coronary Heart Disease: Correlation to Cardiac Computer Tomography and Proposal of a Classification Score
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Quantitative Study on the Breast Density and the Volume of the Mammary Gland According to the Patient’s Age and Breast Quadrant
4. Discussion We successfully quantitatively analyzed the breast composition from the 3-D segmentation of BCT images. In this analysis, the breast composition features—BTV, MGV, and PBD—were quantified, and their variation according to the patient’s age and breast quadrants were assessed. The BTV increases, and MGV and PBD decrease with age, exhibiting a significant difference between the youngest and oldest patients’ groups (p < 0.05).
Assessment of iron nanoparticle distribution in mouse models using ultrashort‐echo‐time MRI
Abstract Microscopic magnetic field inhomogeneities caused by iron deposition or tissue-air interfaces may result in rapid decay of transverse magnetization in MRI. The aim of this study is to detect and quantify the distribution of iron-based nanoparticles in mouse models by applying ultrashort-echo-time (UTE) sequences in tissues exhibiting extremely fast transverse relaxation.
Automated pixel‐wise brain tissue segmentation of diffusion‐weighted images via machine learning
The diffusion‐weighted (DW) MR signal sampled over a wide range of b‐values potentially allows for tissue differentiation in terms of cellularity, microstructure, perfusion, and T relaxivity. This study aimed to implement a machine learning algorithm for automatic brain tissue segmentation from DW‐MRI datasets, and to determine the optimal sub‐set of features for accurate segmentation. DWI was performed at 3 T in eight healthy volunteers using 15 b‐values and 20 diffusion‐encoding directions.
Is there evidence for more than two diffusion components in abdominal organs? - A magnetic resonance imaging study in healthy volunteers
The most commonly applied model for the description of diffusion-weighted imaging (DWI) data in perfused organs is bicompartmental intravoxel incoherent motion (IVIM) analysis. In this study, we assessed the ground truth of underlying diffusion components in healthy abdominal organs using an extensive DWI protocol and subsequent computation of apparent diffusion coefficient ‘spectra’, similar to the computation of previously described T relaxation spectra.
Diffusion-weighted imaging of the abdomen: Impact of b-values on texture analysis features
The purpose of this work was to systematically assess the impact of the b-value on texture analysis in MR diffusion-weighted imaging (DWI) of the abdomen. In eight healthy male volunteers, echo-planar DWI sequences at 16 b-values ranging between 0 and 1000 s/mm2 were acquired at 3 T. Three different apparent diffusion coefficient (ADC) maps were computed (0, 750/100, 390, 750 s/mm2/all b-values).
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