1,721,040 research outputs found
Whole Body imaging by 18F-FDG PET/CT and diffusion weighted MRI with background body signal suppression (DWIBS) in cancer patients: qualitative analysis
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Diagnostic value of computed tomography colonography (CTC) after incomplete optical colonoscopy
No full textIntroduction This study evaluated the role of computed tomography colonography (CTC) in patients who previously underwent incomplete optical colonoscopy (OC). We analyzed the impact of colonic lesions in intestinal segments not studied by OC and extracolonic findings in these patients. Methods Between January 2014 and May 2015, 61 patients with a history of abdominal pain and incomplete OC examination were studied by CTC. CTCs were performed by 320-row CT scan in both the supine and the prone position, without intravenous administration of contrast medium. In all patients both colonic findings and extracolonic findings were evaluated. Results Among the study group, 24 CTC examinations were negative for both colonic and extracolonic findings while 6 examinations revealed the presence of both colonic and extracolonic findings. In 24 patients CTC depicted colonic anomalies without extracolonic ones, while in 7 patients it showed extracolonic findings without colonic ones. Discussion CTC is a noninvasive imaging technique with the advantages of high diagnostic performance, rapid data acquisition, minimal patient discomfort, lack of need for sedation, and virtually no recovery time. CTC accurately allows the evaluation of the nonvisualized part of the colon after incomplete OC and has the distinct advantage to detect clinically important extracolonic findings in patients with incomplete OC potentially explaining the patient's symptoms and conditioning their therapeutic management. Conclusion CTC accurately allows the assessment of both colonic and extracolonic pathologies representing a useful diagnostic tool in patients for whom complete OC is not achievable
The significant role of multimodality imaging with 18Fluorocholine PET/CT in relapsed intracranial hemangiopericytoma [Valor de la imagen multimodal con la PET/TC con [18F]fluorocolina en el hemangiopericitoma intracraneal recurrente]
Full text linkA un varón de 69 anos de edad con ptosis palpebral y sensación de compresión en la órbita izquierda sin causa aparente, se le practicó una resonancia magnética (RM) de cabeza y cuello que mostró una formación de morfología redondeada y un margen bien delimitado en la porción súpero-lateral de la órbita izquierda. El paciente fue sometido a exéresis quirúrgica de dicha lesión, obteniéndose el diagnóstico histopatológico de hemangiopericitoma (HPC). Tres anos más tarde, con la reaparición de los síntomas, la RM detectó una lesión sospechosa de recidiva en la misma localización orbitaria izquierda. Con el fin de establecer la actividad metabólica del tejido orbitario y poder planificar el tratamiento más adecuado, [...
Trattamento endoscopico delle lesioni stenosanti delle vie aeree: valutazione pre e post-operatoria con TC
No full textTrattamento endoscopico delle lesioni stenosanti delle vie aeree: valutazione pre e post-operatoria con TC
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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