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Showing 1 to 20 of 24 for “"Calcifications"”.
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Towards an independent observer of screening mammograms: detection of calcifications
Contains fulltext : 200483.pdf (Publisher’s version ) (Open Access)
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A contrast agent for MRI of calcifications in breast cancer
… breast tumors. The water-poor nature of solid calcifications makes them difficult to image by conventional MRI. Recently, ultra-short echo time (UTE) MRI has enabled detection of solid calcified structures, but it is not specific to the underlying chemical composition. This thesis presents a …
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ARTIFICIAL INTELLIGENCE FOR DETECTION AND QUANTIFICATION OF BREAST ARTERIAL CALCIFICATIONS ON MAMMOGRAMS AS A BIOMARKER OF CARDIOVASCULAR DISEASE
… stratification. In this light, breast arterial calcifications (BAC) have gained traction as one of the most promising women-specific biomarkers: BAC are localized Mönckeberg sclerosis expression involving within the tunica media of breast arteries and detectable as parallel line opacities on …
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Impact of Percutaneous Transluminal Intervention on Vascular Hypoxia and the Role of Micro-calcifications on Atherosclerotic Plaque Rupture
… hypoxia and then analysed the effect of micro-calcifications (µCalcs) as a high-risk indicator of plaque vulnerability. To achieve this, we combined numerical simulations on idealized and ex-vivo human coronary arteries, high-resolution imaging modalities, the development of a micro-material …
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Observations on the Sturge-Weber syndrome
… flammeus) affecting the face, epilepsy, gyriform calcifications within the cerebral cortex in relation to an angiomatosis at leptomeningeal level, and in many cases, buphthalmos or glaucoma. The intracerebral calcifications are not visible radiologically at birth. When the lower part of the face …
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Anatomic investigation of the roots of second mandibular molars using micro CT.
… dinemsions, root wall thickness, presence of calcifications, and apical anatomy. The aim of this study of eighteen mandibular second molars using micro CT was to investigate various aspects of tooth anatomy. The most frequently found mesial root canal configuration was Vertucci Type 7 …
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Micro cameras as adjunct tools in biomedical applications
… first time the periprocedural imaging of micro-calcifications is investigated. This enables the intra-surgical detection of micro-calcifications up to 2.00 mm in the resection margin. To do this a multi-spectral diffuse optical imaging technique for surgical guidance is proposed, and used to …
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Identification of Intracranial Lesions With Dual-Energy Computed to mography and Magnetic Resonance Phase Imaging
… diagnosed as calcification. However, low-density calcifications and hemorrhage may have overlapping attenuation ranges between 40 and 100 HU and, therefore, cannot be differentiated with SECT alone. On T2*-weighted Gradient Recalled Echo (GRE) MRI, these lesions appear as “foci of susceptibility” …
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Dreaming in Urbach-Wiethe patients the effect of amygdala damage on dreaming
… that presents with characteristic amygdala calcifications. A sample of 8 UWD patients and 8 matched controls (all females) from the Northern Cape in South Africa were used.
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Vascular Function in Chronic Renal Failure
… in these patients are aortic stiffness and media calcifications. Maladaptive changes in vascular smooth muscle cells (VSMCs) take place in response to mineral metabolism disorders that develop with declining kidney function. The aims of the present studies were: 1) to investigate the effects of …
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Biochemische und funktionelle Charakterisierung einer gerichteten Gendeletion (Knockout) von Fetuin-A in Mäusen
… In 1-month old D2, Ahsg -/- animals calcifications were detected in heart and lung but not in the kidney cortex. The renal function parameters creatinine and urea as well as calcium and phosphate concentrations in serum were also normal at this timepoint. These data indicate that the …
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DETECTION AND QUANTIFICATION OF BREAST ARTERIAL CALCIFICATION AS A BIOMARKER OF CARDIOVASCULAR RISK IN WOMEN
… health. In this context, breast arterial calcifications (BAC), an expression of Monckeberg’s sclerosis involving the tunica media of medium-caliber breast arteries, present as a promising sex-specific cardiovascular risk biomarker. BAC are observed in around 13% of mammograms and are …
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Risk of cervical lymph node metastasis in papillary thyroid carcinoma: Correlations with lymphangiogenesis and ultrasound features
… differences between the two groups although calcifications tended to be higher in group 2 (84% vs 76% p=0.264). Lymphatic vessel density and nodule echogenicity did not show correlations. Intratumoral lymphangiogenesis was most strongly associated with LNM and thus, could be a useful …
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Zur molekularen Topologie der Bindung natürlicher und rekombinanter Varianten von Alpha 2 -HS-Glycoprotein-Feturin an Hydroxylapatit
… that both already had developed severe ectopic calcifications in various organs, proved the importance of AHSG as an essential soluble inhibitor of calcium phosphate precipitation. Considering the solubility product of hydroxyapatite and the maximal amount of AHSG bound calcium, the inhibition …
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Mammographic breast density as a mediator and surrogate marker for breast cancer risk
… some breast cancer risk factors such as breast calcifications, being parous, history of breast biopsy/aspiration/lumpectomy, and current use of hormone replacement therapy (HRT), but not factors such as a first-degree family history of breast cancer and age at first live birth, history of …
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The role of the amygdala in dreaming
… a very rare genetic condition that can lead to calcifications in the medial temporal lobes. This study analysed 26 dream reports collected from eight adult UWD patients with fully calcified basolateral amygdalae bilaterally, and compared them to 58 dream reports collected from 17 matched …
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Der therapeutische Effekt von Calcimimetika auf die Progression extraossärer Kalzifikation und ossärer Dekalzifikation bei Ahsg/Fetuin-A-defizienten Mäusen
… morbidity and mortality. Extraosseous calcifications seem to have an adverse meaning in this context. Not only vessels but also organs and soft tissue are common sites of massive calcification whereas degradation of calcium carbonate is seen throughout the skeleton leading to renal …
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Spatial light interference microscopy and applications
… onsite the carcinomas for prostate biopsies and calcifications for breast biopsies. The imaging signatures of SLIM report different properties of the tissue and cells compared to the gold standard of stained histopathology, which relies on a subjective practice and is sensitive to variations in …
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Development and Validation of Non-Invasive Methods for the Identification of Patient-Specific Hyperelastic and Anisotropic Material Properties of Abdominal Aortic Aneurysms In Vivo
… with structurally different properties, such as calcifications. The ability to distinguish these regions using 4D US indicates sufficient resolution to differentiate potentially rupture prone regions from more stable areas. Using the averaged models, all patients could be significantly …
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Magnetic Resonance Imaging of Susceptibility Effects in Carotid Atherosclerosis
… inflammation. In addition, plaques may develop calcifications that may be protective of rupture. The chapter describes the established multi-contrast imaging protocols used for characterizing plaques. Furthermore, the use of USPIO-contrast agents to image inflammation is described. Chapter 2 …
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