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As one of the many by-products of Moore's Law, personal computers have, in recent decades, become powerful enough to record real-time eye movements with video-based eye trackers. The decrease in the prices of eye tracking systems (ETSs) has been accelerating since the 1990's, and their use in a variety of scientific domains expanding. ETSs and related applications have shown a lot of promise in recent years, and their widespread and ever-increasing use in mainstream/personal equipment for dail...

Optical coherence tomography. --- OCT (Tomography) --- Interferometry --- Optical tomography --- Coherence (Optics)

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Tomography. --- Lungs --- Cancer --- Imaging.

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Nervio óptico --- Optic nerve --- Optic nerve --- Tomografía. --- Tomography. --- Tomography.

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SPECT/CT cameras have considerably improved diagnostic accuracy in recent years. Such cameras allow direct correlation of anatomic and functional information, resulting in better localization and definition of scintigraphic findings. In addition to this anatomic referencing, CT coregistration provides superior quantification of radiotracer uptake based on the attenuation correction capabilities of CT. Useful applications of SPECT/CT have been identified not only in oncology but also in other specialties such as orthopedics and cardiology. This book covers the full spectrum of clinical applications of SPECT/CT in diagnosis and therapy planning of benign and malignant diseases. Opening chapters discuss the technology and physics of SPECT/CT and its use for dosimetry. The role of SPECT/CT in the imaging of a range of pathologic conditions is then addressed in detail. Applications covered include, among others, imaging of the thyroid, bone, and lungs, imaging of neuroendocrine tumors, cardiac scintigraphy, and sentinel node scintigraphy. Individual chapters are also devoted to therapy planning in selective internal radiation therapy of liver tumors and bremsstrahlung SPECT/CT. Readers will find this book to be an essential and up-to-date source of information on this invaluable hybrid imaging technique.

Single-photon emission computed tomography. --- Tomography, Emission. --- Computerized emission tomography --- Emission tomography --- PET (Tomography) --- PET-CT (Tomography) --- Positron emission tomography --- Positron emission transaxial tomography --- Radionuclide tomography --- Scintigraphy, Tomographic --- Tomography, Radionuclide --- SPECT (Tomography) --- Medicine. --- Radiology. --- Nuclear medicine. --- Oncology. --- Medicine & Public Health. --- Nuclear Medicine. --- Imaging / Radiology. --- Diagnosis --- Diagnostic imaging --- Positrons --- Radioisotope scanning --- Tomography, Emission --- Data processing --- Emission --- Radiology, Medical. --- Oncology  . --- Tumors --- Clinical radiology --- Radiology, Medical --- Radiology (Medicine) --- Medical physics --- Atomic medicine --- Radioisotopes in medicine --- Medical radiology --- Radioactive tracers --- Radioactivity --- Physiological effect --- Radiological physics --- Physics --- Radiation

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Chronic otitis media can be divided into two main groups: chronic otitis media with cholesteatoma (COMC) or without (COM). They have different occurrence and prognosis. The difference between the two groups is usually made by history, clinical and otoscopic examination.CT imaging is the golden standard for imagery for the temporal bone pathologies but its exact role in the diagnosis and preoperative management of patients with chronic otitis media is not clear.The purpose of this paper is to assess the accuracy of preoperative CT imaging of the ear for the type of pathology, staging and identification of potential surgical risks.In this retrospective study, we compared the preoperative 130 imaging protocols tothe surgical findings of patients who had surgery between 2005 and 2012 at the Cliniques Universitaires Saint-Luc.Results show a good sensitivity and specificity for the differentiation between the twogroups of COM (Se: 85% & Sp: 86% for COMC, Se: 93% & Sp: 89% COM) and potential destruction of the ossicular chain (Se: 78% & Sp: 85% on average for the three ossicles). Moreover, the CT imaging is less sensitive and specific for the extension of the disease, especially for the integrity of the facial nerve bony canal (Se: 45% & Sp: 95%) and tegmen lysis (Se: Sp & 60%: 87%).These results are subject to bias since the imaging protocols are experience andquality dependent.After discussion and comparison with the existing literature, we conclude that the temporal CT has its limitations but is a useful exam for pre- and operative management of patients with chronic otitis media. Les otites moyennes chroniques peuvent être divisées en deux grands groupes : les otites chroniques non cholestéatomateuses (OCNC) et les otites chroniques cholestéatomateuses (OCC) en raison de leur mode de survenue et de leur pronostic différent. La différenciation des deux grou pes est habituellement faite par l'anamnèse, l'examen clinique et otoscopique.La tomodensitométrie de l'os temporal est le bilan d'imagerie standard concernant l'os temporal mais sa fiabilité et sa précision dans le diagnostic et le bilan préopératoire des patients atteints d'otite moyenne chronique n'est pas clair.Le but de ce mémoire est donc de déterminer l'impact de cette imagerie préopératoire dans la chirurgie de l'oreille moyenne afin d'évaluer sa précision dans le diagnostic du type de pathologie, la description du bilan d'extension et l'identification de possibles complications. Ceci nous permettrait alors de comprendre son influence sur la prise en charge clinique des pathologies otiques de l'oreille moyenne.Dans cette étude rétrospective, nous avons comparé le protocole d'imagerie préopératoire de 130 patients avec leurs protocoles chirurgicaux respectifs. Ces interventions ont toutes été réalisées entre 2005 et 2012 aux Cliniques Universitaires Saint-Luc. Nous obtenons une bonne sensibilité et spécificité concernant la différenciation entre les deux grands groupes d'otite moyenne chronique (Se : 85% & Sp : 86% pour OCC, Se : 93% & Sp : 89% pour OCNC) ainsi que d'éventuelles lésions de la chaine ossiculaire (Se : 78 % &. Sp : 85% en moyenne pour les trois osselets). Par ailleurs, la tomodensitométrie temporale présente de moins bons résultats pour le bilan d'extension de la pathologie otitique notamment au niveau de l'intégrité du canal du nerf facial (Se : 45% & Sp : 95%) et du tegmen (Se : 60% & Sp : 87%).Ces résultats sont à interpréter sous réserve d'un biais de précision concernant l'établissement des différents protocoles par les équipes de neuroradiologie et d'otologie.Après discussion et comparaison avec la littérature actuelle, nous concluons que la tomodensitométrie temporale a ses limites mais elle reste un accessoire primordial pour le management préopératoire des patients souffrant d'otite moyenne chronique.

Otitis Media --- Tomography, X-Ray Computed