Search results for "radioterapia"
showing 10 items of 574 documents
Searching the right coronary artery we found a rare anomaly documented by 3-dimensional volume rendering
2016
Coronary artery anomaliesLipton classificationCoronary angiographyComputed tomography angiography (CTA)3-Dimensional volume rendering (VR)Unstable angina (UA)
Lesions of Proximal Coronary Arteries
2009
Coronary artery disease (CAD) remains the leading cause of death in the Western world. Conventional coronary angiography (CCA) is the gold standard method for evaluation of the vascular lumen and provides excellent results in demonstrating stenotic lesions of CAD. However, it is an invasive procedure with a small risk of fatal events. Furthermore, CCA is a lumen-oriented technique that does not permit a direct visualization and evaluation of the coronary artery wall. The characterization of coronary plaques without a significant lumen narrowing is also not feasible with CCA. This information is relevant since the comparison of angiographic studies of coronary arteries performed before and a…
Coronary anomalies
2011
INFLUENCE OF INTRA-CORONARY ENHANCEMENT ON DIAGNOSTIC ACCURACY WITH 64-SLICE CT CORONARY ANGIOGRAPHY
2008
We assessed the effect of intra-coronary attenuation on diagnostic accuracy using 64-slice computed tomography coronary angiography (CT-CA). We enrolled 170 patients with suspected coronary artery disease who underwent conventional coronary angiography (CA) and 64-slice CT-CA (100 ml of Iomeprol 400 mg I/ml at 4 ml/s). The study population was divided into two groups (85 patients each based on median attenuation of 326 HU) based on mean arterial attenuation; group 1 with low attenuation and group 2 with high attenuation. Diagnostic accuracy for the detection of significant coronary artery stenosis was determined for both groups using CA as reference standard. Overall, 163 significant stenos…
Chest CT in COVID-19 Pneumonia: Potentials and Limitations of Radiomics and Artificial Intelligence
2021
SARS-CoV-2 epidemics has resulted in an unprecedented global health crisis causing a high number of deaths with pneumonia being the most common manifestation. Chest CT is the best imaging modality to identify pulmonary involvement, but unfortunately there are no pathognomonic features for COVID-19 pneumonia, since many other infectious and non-infectious diseases may cause similar alterations. The adoption of artificial intelligence in biomedical imaging has the potential to revolutionize the identification, management, and the patient’s outcome. If adequately validated, it could be used as a support with predictive and prognostic purposes in symptomatic patients but also as a screening tes…
PET/CT and contrast enhanced CT in single vs. two separate sessions: a cost analysis study
2012
AIM: Aim of the study was to quantify the economic impact of PET/CT and contrast enhanced (c.e.) CT performed in a single session examination vs. stand-alone modalities in oncological patients. METHODS: One-hundred-forty-five cancer patients referred to both PET/CT and c.e. CT, to either stage (N.=46) or re-stage (N.=99) the disease, were included. Seventy-two/145 performed both studies in a single session (innovative method) and 73/145 in two different sessions (traditional method). The cost-minimization analysis was performed by evaluating: 1) institutional costs, data obtained by hospital accountability (staff, medical materials, equipment maintenance and depreciation, departments utilit…
Collateral findings
2011
Cyclotron –PET/CT: radioprotection aspects, check and tests
2009
Tratamiento del carcinoma de labio mediante braquiterapia de alta tasa de dosis
2005
Dado los diferentes métodos terapéuticos para el cáncer de labio, el objetivo del presente estudio es valorar los resultados obtenidos en un grupo prospectivo de 28 pacientes afectos de carcinoma de labio tratados mediante moldes externos de braquiterapia de alta tasa de dosis. Tanto por la remisión completa que ocurrió en todos los casos, la buena tolerancia a la terapia, la ausencia de complicaciones y de recurrencias, la facilidad de empleo de los moldes, la precisión en el posicionamiento de la fuente en la repetición diaria del tratamiento y la seguridad que ofrece en cuanto a radioprotección, concluímos que esta terapéutica probablemente se convierta en la de uso habitual en los próxi…