Search results for "MRI"
showing 10 items of 733 documents
DESCRIZIONE DI UN CASO DI LESIONE REVERSIBILE DELLO SPLENIO DEL CORPO CALLOSO IN PAZIENTE CON MONONUCLEOSI INFETTIVA DA COINFEZIONE EPSTEIN-BARR VIRU…
2013
SCOPO Presentiamo un caso di encefalite virale con lesione reversibile dello splenio del corpo calloso (SCC) in un ragazzo di 16 anni con mononucleosi infettiva da coinfezione Epstein-Barr Virus (EBV) e Citomegalovirus (CMV). MATERIALI E METODI Il paziente, a causa della comparsa improvvisa di stato confusionale, irrigidimento e movimenti involontari alternati a tremori in corso di mononucleosi infettiva, giungeva in PS, dove eseguiva una TC encefalo (Siemens SOMATOM Definition AS+ - 128 strati) in condizioni di base ed in tecnica sequenziale, che non evidenziava reperti significativi. Veniva quindi ricoverato con il sospetto di encefalite virale e, il giorno successivo, veniva sottoposto a…
Presacral Myelolipoma
2014
Many reports have described adrenal myelolipomas but there have been only a few reports of extra-adrenal myelolipomas. We describe a 74-year-old woman who came to our observa- tion for MRI of the lumbar spine for typical lumbar back pain. In addition to signs of mild scoliosis and spondylo disc arthrosis, MR imaging revealed a presacral mass showing a heterogeneously high signal in all pulse sequences and almost completely suppressed on inversion recovery sequences for fat tissue. CT imaging confirmed the fatty nature of the lesion and no signs of bone involvement. These findings were most consistent with a diagnosis of a rare presacral myelolipoma as confirmed at histopathologic analysis. …
«Com’è un mafioso?» Raccontare dall’interno il “mestiere” del poliziotto
2018
Il saggio analizza il racconto autobiografico che Maurizio Ortolan, (ispettore di polizia in servizio dal 1987 al 2013 presso il Nucleo centrale anticrimine) fa della sua esperienza lavorativa, con taglio asciutto ed essenziale, denso di rimandi a importanti episodi delle cronache criminali italiane degli ultimi trent’anni e carico di un vissuto che ha incrociato le biografie di alcuni dei più significativi protagonisti di quel periodo. Utilizzando uno sguardo etnografico e partendo dal racconto di Ortolan, l'autrice fa emergere quegli aspetti che, pur strettamente legati al singolo vissuto, gettano luce sulle pratiche condivise del "mestiere" del poliziotto.
Kritiskās domāšanas attīstība vecākajā pirmsskolas vecumā
2021
Darba autore: Liene Gribuste Bakalaura darba tēma: Kritiskās domāšanas attīstība vecākajā pirmsskolas vecumā Studiju programma: Profesionālā bakalaura studiju programma ‘’Pirmsskolas un sākumskolas skolotājs’’ Darba zinātniskais vadītājs: Docente Dr. Paed. Inese Freiberga Bakalaura darbā tiek pētīts / analizēts: Vecākā pirmsskolas vecuma bērna kritiskās domāšanas attīstība. Darba mērķis: Izpētīt kritiskās domāšanas attīstības iespējas vecākajā pirmsskolas vecumā, sniedzot bērniem iespējas pašiem spriest un analizēt, pieņemt lēmumus un secināt sava lēmuma rezultātu, kā arī izmantojot problēmrisināšanas metodi. Darba uzdevumi: 1. Pētīt pedagoģijas un psiholoģijas zinātnieku teorijas par kriti…
Skolēnu radošās darbības veicināšana matemātikas mācībā 3.klasei
2022
Bakalaura darba nosaukums: Skolēnu radošās darbības veicināšana matemātikas mācībā 3.klasei. Darba autore: Sevda Latkovska Darba vadītāja: Asoc.prof., Dr.paed Ineta Helmane Bakalaura darba mērķis ir pētīt un praktiski pārbaudīt skolēnu radošās darbības veicināšanu matemātikas mācībā 3. klasei. Bakalaura darbs sastāv no teorētiskās un empīriskās daļas, secinājumiem un ieteikumiem. Teorētiskajā daļā analizēta un apkopota pedagoģijas un psiholoģijas zinātniskā literatūra, žurnāli un pētījumi par radošas darbības būtību, matemātikas mācību sākumskolā, skolēnu radošas darbības veicināšanu. Empīriskajā daļā veikts pētījums divos posmos. Katrā posmā tiek īstenotas 5 nodarbības. Pētījuma hipotēze i…
Re: Small solid renal masses: Characterization by diffusion-weighted MRI at 3 T. A reply.
2014
No abstract available.
Iron oxides nanoparticles and titanate nanotubes dedicated to multimodal imaging and anticancer therapy
2013
The new implementations of nanoparticles in the medical field are one of the essential factors of the medical progress expected at the beginning of this XXIst century. Thus, the domain of the medical imaging is also affected by this technological evolution. This work consisted in developing theranostic probes with iron oxides nanoparticles (SPIO) and titanate nanotubes (TiONts) for multimodal imaging (magnetic/nuclear or magnetic/optical) and also possessing a therapeutic effect (hyperthermia/PDT or radiosensitization/PDT).The titanate nanotubes of this study have an average length of about 150 nm and were obtained by Kasuga's hydrothermal synthesis. These nanotubes present an outside diame…
ICA of full complex-valued fMRI data using phase information of spatial maps.
2015
Background ICA of complex-valued fMRI data is challenging because of the ambiguous and noisy nature of the phase. A typical solution is to remove noisy regions from fMRI data prior to ICA. However, it may be more optimal to carry out ICA of full complex-valued fMRI data, since any filtering or voxel-based processing may disrupt information that can be useful to ICA. New method We enable ICA of the full complex-valued fMRI data by utilizing phase information of estimated spatial maps (SMs). The SM phases are first adjusted to properly represent spatial phase changes of all voxels based on estimated time courses (TCs), and then these are used to segment the voxels into BOLD-related and unwant…
Coupling of Action-Perception Brain Networks during Musical Pulse Processing: Evidence from Region-of-Interest-Based Independent Component Analysis
2017
Our sense of rhythm relies on orchestrated activity of several cerebral and cerebellar structures. Although functional connectivity studies have advanced our understanding of rhythm perception, this phenomenon has not been sufficiently studied as a function of musical training and beyond the General Linear Model (GLM) approach. Here, we studied pulse clarity processing during naturalistic music listening using a data-driven approach (independent component analysis; ICA). Participants’ (18 musicians and 18 controls) functional magnetic resonance imaging (fMRI) responses were acquired while listening to music. A targeted region of interest (ROI) related to pulse clarity processing was defined…
Noise-assisted persistence and recovery of memory state in a memristive spiking neuromorphic network
2021
Abstract We investigate the constructive role of an external noise signal, in the form of a low-rate Poisson sequence of pulses supplied to all inputs of a spiking neural network, consisting in maintaining for a long time or even recovering a memory trace (engram) of the image without its direct renewal (or rewriting). In particular, this unique dynamic property is demonstrated in a single-layer spiking neural network consisting of simple integrate-and-fire neurons and memristive synaptic weights. This is carried out by preserving and even fine-tuning the conductance values of memristors in terms of dynamic plasticity, specifically spike-timing-dependent plasticity-type, driven by overlappi…