1,721,164 research outputs found
Una breve panoramica sul quadro normativo riguardante la gestione delle specie alloctone in Italia e considerazioni sulla conservazione dei Pesci delle acque interne
No full text320-row detector dynamic 4D-CTA for the assessment of brain and spinal cord vascular shunting malformations: A technical note
No full textShunting vascular malformations of the brain and spinal cord are traditionally studied using digital subtraction angiography (DSA), the current gold standard imaging method routinely used because of its favourable combination in terms of spatial and temporal resolution. Because DSA is relatively expensive, time-consuming and carries a risk of silent embolic events and a small risk of transient or permanent neurologic deterioration, a non-invasive alternative angiographic method is of interest. New 320 row-detector CT scanners allow volumetric imaging of the whole brain with temporal resolution up to ≅ 3 Hz. Those characteristics make computed tomography angiography (CTA) an affordable imaging method to study the haemodynamics of the whole brain and can also be applied to the study of limited portions of the spinal cord. The aim of this paper is to make a brief summary of our experience in studying shunting vascular malformation of the brain and spinal cord using dynamic 4D-CTA, explaining the technical details of the studies performed at our institution, and the state-of-the-art major advantages and drawbacks of this new technique. We found that dynamic 4D-CTA is able to depict the main architectural characteristics of previously untreated vascular shunting malformations both in brain and spinal cord (i.e. their main arterial feeders and draining veins) allowing their correct diagnosis and exhaustive classification, limiting the use of DSA for therapeutic purposes
Neuroradiology: Differential Diagnosis, Follow-Up, and Reporting
No full textCavernous cerebral malformations (CCMs) can show typical and characteristic findings at neuroradiology, above all at magnetic resonance imaging, but differential diagnosis with other lesions of similar appearance can be challenging and should be taken into consideration. Management of CCMs can be conservative in most cases, and thus appropriate follow-up timing and modality is required. Growing input from neurologists, neurosurgeons, neuroradiologists, and patients recommend to offer a standard neuroradiological report, to enhance interpretation and comparability in daily clinical practice. The purpose of this chapter is to present differential diagnosis, follow-up, and reporting of CCMs by neuroradiology
Correction to: MR imaging of cerebral involvement of Rosai–Dorfman disease: a single-centre experience with review of the literature (La radiologia medica, (2020), 10.1007/s11547-020-01226-7)
No full textIn the original publication, the first and last name of the Author “Giorgia Saltelli” was inadvertently swapped. The correct Author group has been provided below
Magnetic Resonance appearance of supravalvular aortic stenosis in William's syndrome. Report of two cases
No full textDegenerative disorders of the spine
No full textPatients with back pain and degenerative disorders of the spine have a significant impact on health care costs. Some authors estimate that up to 80% of all adults experience back pain at some point in their lives. Disk herniation represents one of the most frequent causes. Nevertheless, other degenerative diseases have to be considered. In this paper, pathology and imaging of degenerative spine diseases will be discussed, starting from pathophysiology of normal age-related changes of the intervertebral disk and vertebral body
The name of the trout: considerations on the taxonomic status of the Salmo trutta L., 1758 complex (Osteichthyes: Salmonidae) in Italy
Full text linkThe systematic status of the Italian trout in the Salmo trutta L., 1758 complex (including marble, Mediterranean and lacustrine trout), has long been - and is still today–subject of controversies among ichthyologists. The specific name and the taxonomic rank changed several times in the last years, and the natural occurrence of this salmonid fish in some Italian areas was debated due to spread of alien strains. The main difficulty with the taxonomy of the Italian trout stems from the impossibility of disentangling it “on paper” or, even worse, trying to face this systematic issue considering only a very limited (local/national scale) part of the brown trout range. The taxonomy of the Italian trout population is inextricably linked to the necessity of clarifying first phylogeny and phylogeography in an overall Mediterranean context. The opportunity of a non “self-referential” taxonomy is even more fundamental for a vulnerable salmonid like the Italian brown trout, for which there is a very conflicting management problem related to sport fishing and, at the same time, the urgent need for effective conservation measures. It is however necessary to emphasize that conservation is independent from taxonomy but must start from the level of the local population. In fact, management units need stability and they cannot, therefore, coincide with entities–the Linnean species–requiring continuous taxonomic revisions. Modern molecular methods are the best tools for defining these units of management and conservation in an evolutionary perspective
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