Search results for "MR"
showing 10 items of 3001 documents
Multi-modal non-rigid registration of medical images based on mutual information maximization
2007
In this paper, a new multi-modal non-rigid registration technique for medical images is presented. Firstly, the registration problem is outlined and some of the most common approaches reported, then, the proposed algorithm is presented. The proposed technique is based on mutual information maximization and computes a deformation field through a suitable globally smoothed affine piecewise transformation. The algorithm has been conceived with particular attention to computational load and accuracy of results. Experimental results involving intra-patient, inter-patients and atlas images on brain CT and MR (T1, T2 and PD modalities) are reported.
11. Klases skolēnu publicistikas tekstu izstrādes prasmes attīstīšanas iespējas latviešu valodas stundās
2022
Diplomdarba 11. klases skolēnu publicistikas tekstu izstrādes prasmes attīstīšanas iespējas latviešu valodas stundās izvirzīts mērķis ir aprobēt izstrādāto lingvodidaktisko materiālu un pārliecināties par tā piemērotību 11. klases skolēnu stilistikas prasmju attīstīšanai, strādājot ar publicistikas stila žanriem – reklāmu un reklāmrakstu. Publicistikas stils ir sava veida sabiedrības valodas spogulis, par aktuālu problēmu kļūst publicistikā lietota valodas kvalitāte. Pētījumā tiek meklēta atbilde uz jautājumu, kā attīstīt skolēnu prasmi veidot konkrētus publicistikas stila žanru tekstus, veicinot stilistikas jautājumu un literārās valodas līdzekļu pilnīgāku izpratni, lai pētot, analizējot u…
Žurnālistikas un reklāmas lauku saplūšana preses izdevumu reklāmrakstu veidošanas praksē: ietekme uz žurnālistu profesionālajām identitātēm
2015
Bakalaura darba tēma ir žurnālistikas un reklāmas lauku saplūšana preses izdevumu reklāmrakstu veidošanas praksē un to ietekme uz žurnālistu profesionālajām identitātēm. Darba mērķis ir noskaidrot kā žurnālistikas un reklāmas lauku saplūšana reklāmrakstu veidošanas praksē ietekmē žurnālistu profesionālās identitātes. Darbs sastāv no trīs daļām: teorētiskās, metodoloģiskās un empīriskās daļas. Teorētiskajā daļā aplūkota lauka teorija, pievēršot uzmanību žurnālistikas un reklāmas lauku saplūšanai. Bakalaura darba empīriskā daļa ietver divus pētījumus. Pirmkārt, daļēji strukturētas intervijas ar žurnālistiem, kuri piedalās reklāmrakstu veidošanas praksē. Otrkārt, kvantitatīvā kontentanalīze 15…
Approccio multidisciplinare al resturo della statua di San Nicola di Mira: un caso studio
2005
Spatial source phase : A new feature for identifying spatial differences based on complex-valued resting-state fMRI data
2019
Spatial source phase, the phase information of spatial maps extracted from functional magnetic resonance imaging (fMRI) data by data‐driven methods such as independent component analysis (ICA), has rarely been studied. While the observed phase has been shown to convey unique brain information, the role of spatial source phase in representing the intrinsic activity of the brain is yet not clear. This study explores the spatial source phase for identifying spatial differences between patients with schizophrenia (SZs) and healthy controls (HCs) using complex‐valued resting‐state fMRI data from 82 individuals. ICA is first applied to preprocess fMRI data, and post‐ICA phase de‐ambiguity and den…
Choroidal thickness in glaucoma patients and glaucoma suspects measured by spectral domain coherence optical tomography
2012
Purpose: The aim of our study was to evaluate and compare retro-foveolar choroidal thickness (RFCT) of healthy subjects, individuals with intraocular hypertension, patients with primary open-angle glaucoma (POAG), patients with normal tension glaucoma (NTG) and patients with primary angle-closure glaucoma (PACG) by spectral domain optical coherence tomography (SD-OCT).Methods: Sixty-five healthy eyes, 30 eyes with intraocular hypertension, 90 eyes with POAG, 30 eyes with NTG and 20 eyes with PACG were included in this cross-sectional study. RFCT, foveolar retinal thickness and average retinal nerve fiber layer thickness (RNFL) were measured by SD-OCT (Spectralis HRA-OCT, Heidelberg Engineer…
Nimrod Borenstein Orchestral Works Label: Chandos 2017
2021
NMR-based quantification of rosmarinic and carnosic acids, GC-MS profile and bioactivity relevant to neurodegenerative disorders of Rosmarinus offici…
2013
Abstract A comparative study of phytochemicals content and biological properties of eight Rosmarinus officinalis (rosemary) populations (RO1–RO8) collected in different areas of Tunisia was carried out. Two of the main rosemary constituents, rosmarinic and carnosic acids, were quantified by an NMR technique. Carnosic acid content was higher than that of rosmarinic acid. The non-polar constituents were examined by GC and GC–MS. Total phenols and flavonoids content were also determined in order to discuss the possible correlation between these phytochemicals and bioactivity. Antioxidant activity was investigated through different in vitro assays. Sample RO3 from a sub-humid area showed the hi…
SMART NANOSPONGE-BASED SYSTEMS FOR ADVANCED APPLICATIONS
2023
77Se NMR Spectroscopic, DFT MO, and VBT Investigations of the Reversible Dissociation of Solid (Se6I2)[AsF6]2•2SO2 in Liquid SO2 to Solutions Contain…
2009
The composition of a complex equilibrium mixture formed upon dissolution of (Se6I2)[AsF6]2·2SO2 in SO2(l) was studied by 77Se NMR spectroscopy at −70 °C with both natural-abundance and enriched 77Se-isotope samples (enrichment 92%). Both the natural-abundance and enriched NMR spectra showed the presence of previously known cations 1,4-Se6I22+, SeI3+, 1,1,4,4-Se4I42+, Se102+, Se82+, and Se42+. The structure and bonding in 1,4-Se6I22+ and 1,1,4,4-Se4I42+ were explored using DFT calculations. It was shown that the observed Se−Se bond alternation and presence of thermodynamically stable 4pπ−4pπ Se−Se and 4pπ−5pπ Se−I bonds arise from positive charge delocalization from the formally positively c…