نتایج جستجو برای: respectively in contrast
تعداد نتایج: 17007205 فیلتر نتایج به سال:
The risk of radiologic procedures is determined by different factors including contrast media, type of disease, procedure and skill of the physician. To reduce the contrast media-related risk, it is wise to use low osmolar contrast media (LOCM) in high-risk patients. When there is negligible cost difference between LOCM and other contrast media, it is wise to use LOCM for all patients. If an al...
objective(s): in this study, we aimed to describe the characteristics of portal vein tumor thrombosis (pvtt), complicating hepatocellular carcinoma (hcc) in contrast-enhanced fdg pet/ct scan. methods: in this retrospective study, 9 hcc patients with fdg-avid pvtt were diagnosed by contrast-enhanced fluorodeoxyglucose positron emission tomography/computed tomography (fdg pet/ct), which is a comb...
in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...
Bimodal imaging combines two imaging modalities in order to benefit from their advantages and compensate the limitations of each modality. This technique could accurately detect diseases for diagnostic purposes. Nanoparticles simultaneously offer diagnostic data via various imaging modalities owing to their unique properties. Moreover, bimodal nanoprobes could be incorporated into theranostic s...
background dynamic contrast-enhanced magnetic resonance imaging (dce - mri) has been widely used in the management of breast cancer, and its diagnostic value in breast imaging has been demonstrated. there have only been a few reports regarding the usefulness of pre-contrast imaging. knowledge about clinically significant findings of preoperative, pre-contrast t1 and t2 mr images will allow more...
background: morphological examinations of urinary erythrocytes can be of diagnostic value in initial evaluation of hematuria. dysmorphic urinary red blood cells are known to indicate a glomerular origin of bleeding. we examined the clinical usefulness of this test in a population complained of hematuria by use of three different methods: light microscopy, phase contrast microscopy, and wright s...
Background and purpose: Threshold contrast sensitivity could be considered as an important indicator of visual function in thalassemic patients. In this study the threshold of contrast sensitivity was investigated in patients with major and minor thalassemia and normal individuals. Material & methods: This cross-sectional study was conducted in 30 patients of thalassemia major (Desferal depen...
Magnetic resonance based on molecular imaging allows tracing contrast agents thereby facilitating early diagnosis of diseases in a non-invasive fashion that enhances the soft tissue with high spatial resolution. Recently, the exchange of protons between the contrast agent and water, known as the chemical exchange saturation transfer (CEST) effect, has been measured by applying a suitable pulse ...
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