Search results for " radioterapia"

Assessment of Coronary Plaque with Multislice Computed Tomography

2006

Influence of the heart rate in the selection of the optimal reconstruction phase in clinical routine Multislice Coronary Angiography

2006

PREVALENCE OF MYOCARDIAL BRIDGING AND CORRELATION WITH CORONARY ATHEROSCLEROSIS STUDIED WITH 64-SLICE CT CORONARY ANGIOGRAPHY

2009

[Diagnosis, prognosis and treatment of "myocardial bridging": state of the art and unresolved issues].

2013

The current gold standard for the diagnosis of myocardial bridging is conventional coronary angiography; however, it shows only indirect signs of the disease, due to the systolic compression of the artery caused by the myocardial bridge with narrowing of the lumen and diastolic relaxation. On the other hand, computed tomography coronary angiography, even though exposing to radiation, clearly demonstrates the intramural course, the overlying muscular bands and the surrounding tissues also in asymptomatic patients and in absence of systolic compression. The prognosis of patients with myocardial bridge is usually good, but further studies are needed to evaluate the long-term prognosis of these…

A mistaken case of non-q wave acute infarction

2012

Over the last few years, enormous progress has been made in Cardiovascular imaging. Myocarditis is today an underdiagnosed cause of acute sudden death, heart failure, and chronic dilated cardiomyopathy. Its diagnosis is frequently missed or delayed and it can simulate an acute coronary syndrome because of its clinical presentation and elevation of cardiac enzymes. Cardiac Magnetic Resonance has become the leading modality for its noninvasive diagnosis, and it often replaces endomyocardial biopsy in clinical practise.

Usefulness of SonoVue in the identification of sentinel nodes in patients with breast cancer

2013

Purpose Methods and Materials Results Conclusion References Personal Information

Neuroimaging delle Demenze

2012

Sin dai suoi esordi la diagnostica per immagini ha profondamente rivoluzionato la diagnostica neurologica. Tecniche quali la tomografia computerizzata (TC) e la risonanza magnetica (RM) si sono, nel corso degli anni, rivelate di enorme vantaggio per i pazienti affetti da patologie neurologiche. Tuttavia, quello delle malattie neurodegenerative con particolare riferimento alle demenze, tra i tanti capitoli delle neuroscienze, è quello che probabilmente ha meno usufruito dei vantaggi offerti dalla diagnostica neuroradiologica “convenzionale”. Sebbene negli ultimi due/tre lustri le apparecchiature TC ed RM abbiano infatti subito una forte spinta evolutiva complice l'irrefrenabile progresso te…

Spectrum of non-cardiac collateral findings in patients with suspected coronary artery disease assessed with Multislice Computed Tomography Coronary …

2009

Dosimetry for electron Intra-Operative RadioTherapy: Comparison of output factors obtained through alanine/EPR pellets, ionization chamber and Monte …

2015

Abstract In this work a comparison between the response of alanine and Markus ionization chamber was carried out for measurements of the output factors (OF) of electron beams produced by a linear accelerator used for Intra-Operative Radiation Therapy (IORT). Output factors (OF) for conventional high-energy electron beams are normally measured using ionization chamber according to international dosimetry protocols. However, the electron beams used in IORT have characteristics of dose per pulse, energy spectrum and angular distribution quite different from beams usually used in external radiotherapy, so the direct application of international dosimetry protocols may introduce additional uncer…

Correlation between ferrous ammonium sulfate concentration, sensitivity and stability of Fricke gel dosimeters exposed to clinical X-ray beams

2014

Abstract This work describes the characterization of various Fricke-Agarose-Xylenol gels (FXG) dosimeters using NMR relaxometry and MRI analysis. Using X-rays from a clinical linear accelerator (LINAC), the gels were irradiated in the dose range from 0 Gy to 20 Gy. The photon sensitivity of the FXGs was measured in terms of NMR relaxation rates; its dependence on radiation dose was determined as a function of ferrous ammonium sulfate contents (from 0.5 mM to 5 mM). Furthermore, the stability of the NMR signal was monitored over several days after irradiation. These measurements were aided by Magnetic Resonance Imaging (MRI) scans which allowed three-dimensional (3D) dose mapping. In order t…