Comparison of Tooth Length Measurements Made on CBCT and 3T MR Images

Objective: The aim of this study is to compare tooth length measurements made on cone beam computed tomography (CBCT) scans and 3-Tesla (3T) magnetic resonance (MR) scans. Materials and Methods: One CBCT scan (NewTom5G, AFP Imaging, USA) and one 3T MR scan (Siemens Medical Solutions, DE) as performed on 12 subjects. CBCT images were captured with an 18x16 inch field of view that covered the whole head. Contiguous sagittal MR images of the whole head were produced in a 3.0T imaging system with a T1-weighted 3D imaging sequence (Magnetization Prepared Rapid Acquisition by Gradient Echo (MP-RAGE), TP/TE = 1950/2.26 ms) and isotropic resolution of 1.0x1.0x1.0 mm. DICOM formatted images from each scan were oriented in all three planes of space and 4 mm thick slices were made through the long axis of all permanent teeth. Tooth length measurements were determined from the slices (336 tooth length measurements) using Invivo (v5.4) imaging software (Anatomage Inc., San Jose, CA). Results: Overall data showed good correlation with Intraclass Correlation Coefficient of 0.981 (P\u3c0.001) and Pearson’s Correlation of 0.981 (P\u3c0.001). The mean difference between the collective measurements was 0.04 mm ± 0.77 mm. Measurements in the maxilla (ICC 0.982) had slightly higher correlation than those in the mandible (0.980). Second premolars were found to have the highest correlation of all tooth types (ICC 0.984, P\u3c0.001). Conclusions: Measurements made of 3T MR images have good correlation with equivalent CBCT measurements. Larger sample size is required to evaluate differences found in data. Future studies are required to evaluate MRI as a diagnostic imaging modality in the field of orthodontics

Graduate Recital: Douglas A. Weeks, Piano; November 13, 1974

Hayden AuditoriumWednesday EveningNovember 13, 19748:15 p.m

Graduate Recital: Douglas A. Weeks, Piano; November 10, 1974

Music HallSpringfield Junior CollegeSundayNovember 10, 19741:30 P

Mythopoiesis And Collective Imagination In Videogames

As videogames become more and more popular, their ability to generate and communicate mythologies (mythopoiesis) appears clearer. Pokémon, The Legend of Zelda, and Halo are just a few of the specific transmedial storyworlds created through (relatively few) years of reiteration. At the same time, recent examples of massively diffused products also picture remediations of heritage, folk tales, architecture, and other cultural elements, reaching users of any background. Franchises like Assassin’s Creed, God of War, or Final Fantasy take large inspiration from various cultural heritages. By doing so, video-ludic remediations add to previously shared imaginary some peculiar interactive (ergodic) features: since video games have specific features that imply interaction by (and with) the user, the remediated cultural elements acquire properties that were not present in any previous representation. The interest of this study is to enlighten how it is possible for blockbuster videogames to build over previous archetypes and imaginaries, creating common knowledge about certain cultural objects, myths, and figures, among players on a global scale. The main focus of this research will be Japanese cultural heritage representation in recent popular videogames such as Nioh, Ghost of Tsushima, and Sekiro: Shadows Die Twice. In a comparative analysis of these products, the study will try to underline the common elements of blockbuster remediations, while exploring the emerging interactive (ergodic) features that the mentioned videogames add to previously shared imaginary of portrayed cultural elements. Any emerging evidence will then serve to build a tentative framework or method to remediate and represent any given cultural element in future videogame projects that aim to properly communicate heritage on a large scale such as the global digital game market

Some remarks on PM2.5

Since 1970, the General Physics Department of «Università degli Studi di Torino» has carried out a project research, on inorganic solid particulate matter. The special issue of Annals of Geophysics, published for Professor Giorgio Fiocco’s 70th birthday, gives us the possibility to make some important remarks on this topic, focusing on PM2.5. This has been possible using all the old and new experimental data of the measures made by the authors of this paper since 1970

Intense events of rainfalls in Piemonte

The possibility of studying the precipitations recorded in a large number of meteorological stations in Piemonte led us to analyse what has happened in the last century. A comparison between periods of 10-20 years, using an arbitrary index of rainfall, shows an increase in intense events in the last 20 years though we can observe a general reduction, in absolute value, of the quantity of rain. It is shown that, in the last 30 years, there has been a change in the granulometric distribution of Suspended Particulate Matter (SPM) which, in standard conditions, might become Condensation Nuclei (CN). This might have infl uenced condensation phenomenon, causing a greater frequency of intense events

Critical Current Oscillations in Strong Ferromagnetic Pi-Junctions

We report magnetic and electrical measurements of Nb Josephson junctions with strongly ferromagnetic barriers of Co, Ni and Ni80Fe20 (Py). All these materials show multiple oscillations of critical current with barrier thickness implying repeated 0-pi phase-transitions in the superconducting order parameter. We show in particular that the Co barrier devices can be accurately modelled using existing clean limit theories and so that, despite the high exchange energy (309 meV), the large IcRN value in the pi-state means Co barriers are ideally suited to the practical development of superconducting pi-shift devices.Comment: 4 pages 3 figures 1 table. Revised version as accepted for publication. To appear in Physical Review Letter