Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"echogenicity"”.
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Attachment mechanisms of a novel, targeted, lipid-based, ultrasound contrast agent
… the effect of various production methods on the echogenicity of the agent. Echogenicity has been assessed from quantification of the RF data and determination of the mean ultrasound backscatter. Agitation was found to be the optimal method of production resulting in a 3.94(±1.14)dB increase in …
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Ultrasound features of human carotid plaques
… the relation between plaque features, mainly echogenicity measured as grey scale median (GSM), and some of the known risk factors for cardiovascular events, as well as treatment approaches. Measurement of GSM has in the last decades become common in research. It has not, however, been …
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Einfluß einer Selen-Substitution auf den Verlauf einer Autoimmunthyreoiditis
… were determined by commercial assays. The echogenicity of the thyroid was monitored with high resolution ultrasound. The mean TPOAb concentration decreased significantly to 63.6% (P = 0.013) in the selenium group vs. 88% (P = 0.95) in the placebo group. A subgroup analysis of those patients …
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Quantitative Pertechnetate Thyroid Scintigraphy and the Ultrasonographic Appearance of the Thyroid Gland in Clinically Normal Horses
… and thyroid lobe volume were calculated. Echogenicity of thyroid lobes and presence of nodules were documented. The two groups were compared using appropriate parametric and nonparametic tests. Total T4 concentrations were significantly lower in the older group. Sixty minute mean ± …
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Structural characteristics and functional consequences of lateral ankle sprains
… used to provide a quantitative measure ofthe echogenicity of the anterior talofibular ligament by computer-aided greyscale analysis.Echogenicity was used as an indicator of ligament quality. The result showed that the echointensity of anterior taloibular ligament was lowest intensity in …
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Development and Evaluation of Paclitaxel-Loaded Liposomal Formulations for Targeted Drug Delivery to Breast Cancer
… The <em>in vitro</em> measurements of echogenicity showed that these paclitaxel-loaded tumor vasculature targeted gas-filled liposomes were acoustically active and can be disintegrated by high intensity ultrasound pulses.</p>
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The use of ultrasound in the prediction of endometrial cancer in women with postmenopausal bleeding
… malignancy was heterogeneous endometrial echogenicity (area under the receiver operating characteristics curve, AUC, 0.83), and the power Doppler ultrasound variable that best predicted malignancy was irregular branching of endometrial blood vessels (AUC 0.77). Mathematical models for …
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Risk of cervical lymph node metastasis in papillary thyroid carcinoma: Correlations with lymphangiogenesis and ultrasound features
… 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 predictive marker for cervical LNM.
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Real-time beam visualization and therapy planning for focused ultrasound therapies using a diagnostic imaging array
… for the scattering profile of the medium, the echogenicity of the B-mode image was used to normalize the intensity field reconstruction, allowing for robust beam visualizations even in non-homogeneous media. The beam visualization technique was demonstrated at a frame rate of 25-30 frames per …
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Radiomic and Image-Based Biomechanical Approaches for Sonographic Evaluation of the Thoracolumbar Fascia in Patients With Mechanical Low Back Pain
… morphological assessments, such as thickness and echogenicity, can reliably distinguish the TLF of individuals with and without LBP. There is a critical need for reliable US-based methods of evaluating the TLF to aid in diagnosis, treatment, and monitoring of LBP. Radiomics, an emerging technique …
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Echogenic Liposomes For Nitric Oxide Delivery and Breast Cancer Treatment
… and release of NO from NO-ELIP by measuring echogenicity using intravascular ultrasound images. Breast cancer cell lines, MDA-MB-231 and MDA-MB-468, were selected to investigate the cytotoxic effects of NO liberated from NO-ELIP and their response to NO concentration. Ultrasound-triggered NO …
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Quality of neonatal cranial ultrasound Interpretation among doctors in the Western Cape Metro: a clinical survey
… in a term infant with increased white matter echogenicity (0% vs. 43%; p=0.017). Conclusions: Our survey shows inadequate and variable cUS training and competency in paediatric and neonatal trainees in our institution. The findings indicate the need for a structured training program and …
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Endoscopic Incidence of Upper Gastrointestinal Submucosal Tumors and Endosonographic Findings
… tract is comprised of 5 layers showing different echogenicity under endoscopic ultrasonography; The first layer is an entry echo and mucosa, the second is a mucosa, the third is submucosa, the fourth layer is a muscularis propria, and the fifth layer is serosa and exit echo. Of the patients who …
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Effects of Mechanical Damage on Patellar Tendon Ultrasound Texture Parameters
… that could indicate injury include variations in echogenicity (brightness) within the tendon structure compared to surrounding structures on the US image. Current clinical interpretation of tendon US images is generally qualitative and hence may be subjective, particularly when evaluating more …