Ricerc@Sapienza

Graph theory analysis on resting state electroencephalographic rhythms disclosed topological properties of cerebral network. In Alzheimer’s disease (AD) patients, this approach showed mixed results. Granger causality matrices were used as input to the graph theory allowing to estimate the strength and the direction of information transfer between electrode pairs.

AIM:
To investigate the correlation between conventional computed tomography (CT) features, quantitative texture analysis (QTA), epidermal growth factor receptor (EGFR) mutations, and survival rates in patients with lung adenocarcinoma.
MATERIALS AND METHODS:

PURPOSE:
The aim of the present study was to evaluate the impact of the aortic bifurcation (AB) morphological characteristics, analyzed on computed tomography angiography (CTA), on outcomes of patients with abdominal aortic aneurysms (AAAs), treated by endovascular aneurysm repair (EVAR) in a single-center experience.

PURPOSE:
Leptin (LEP) is a peptide hormone with multiple physiological functions. Besides its systemic actions, it has important peripheral roles such as a mitogen action on keratinocytes following skin lesions. We previously showed that LEP mRNA is significantly induced in response to neutron irradiation in mouse skin and that the protein increases in the irradiated epidermis and in the related subcutaneous adipose tissue. In this work, we investigated the post-transcriptional regulation of LEP by miRNAs and the conservation of LEP's role in radiation response in human cells.

Through-the-wall radar imaging (TWRI) systems allow police, fire personnel, and defense forces to detect, identify, and track subjects inside buildings or under rubble. In this paper, the delay and sum (DAS) and range migration (RM) algorithms are compared as imaging techniques for a multiple input multiple output (MIMO) stepped-frequency (SF) radar system. These algorithms have been applied to analytical, simulated, and measured data both in the absence and in the presence of a wall between the antenna and the target.

The recent developments of medical applications of electromagnetic fields in both diagnostic and therapeutic scenarios has posed the attention on the accurate knowledge of the dielectric properties of human tissues. Accordingly, several studies were recently devoted to the measurements of such properties under various physiological conditions. Since biological tissues show a high variability, to compare the different data it is necessary to thoroughly control the experimental conditions.

Dynamic contrast-enhanced cardiovascular magnetic resonance imaging can be used to quantitatively assess the myocardial blood ow (MBF), recovering the tissue impulse response function for the transit of a gadolinium bolus through the myocardium. Several deconvolution techniques are available, using various models for the impulse response. The method of choice

Pancreatic neuroendocrine tumours (PanNETs) represent an uncommon type of pancreatic neoplasm, whose incidence is increasing worldwide. As per exocrine pancreatic cancer, a relationship seems to exist between PanNETs and glycaemic alterations. Diabetes mellitus (DM) or impaired glucose tolerance often occurs in PanNET patients as a consequence of hormonal hypersecretion by the tumour, specifically affecting glucose metabolism, or due to tumour mass effects.