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Instrumentation for Assessing mTBI Events
Published in Mark A. Mentzer, Mild Traumatic Brain Injury, 2020
Numerous test requirements motivate the development of flash X-ray cineradiography systems with multi-anode configuration for repetitive imaging in closely spaced time frames (Mentzer et al., 2010). Applications include the following: Shaped charge detonations to further understand properties of jet formation and particulationExplosively formed projectile detonations to quantify launch and flight performance characteristicsDetonations of small caliber grenades and explosive projectiles to verify fuse function times and fragmentation patternsPerformance and behavior of various projectiles and explosive threats against passive, reactive, and active target systemsHuman effects studies including body armor, helmets, and footwearBehind armor debris studies of large caliber ammunition against various armor materialsSmall caliber projectile firings to study launch, free flight, and target impact results
Thromboembolic Events in Prosthetic Valves
Published in Hau C. Kwaan, Meyer M. Samama, Clinical Thrombosis, 2019
J. Acar, P. L. Michel, J. Berdah
When the poppet of the valve is radiopaque, cineradiography is a simple method, well tolerated by all patients even when critically ill. Limitations of a ball motion or a very reduced opening angle of disk or leaflets, associated or not with incomplete closure, confirm the diagnosis of thrombosis. In Ledain's experience71 cineradiography confirmed the diagnosis in 15 out of 16 cases of disk valve occlusive thrombosis.
Case Studies
Published in Nicholas Stergiou, Nonlinear Analysis for Human Movement Variability, 2018
Anastasia Kyvelidou, Leslie M. Decker
Healthy and Parkinson’s mice were filmed in the lateral view using cineradiography at 250 frames per second. Cineradiography is a technique that allows recording the successive positions of every bone segment of animals in motion. Markers (small radio-opaque balls) were placed at the right and left forelimb and hindlimb foot. All mice walked on the treadmill at two different treadmill speeds: 6.9 and 15.1 cm s−1 (Figure 9.18). In total, three healthy mice and five Parkinson’s mice walking at the speed of 6.9 cm s−1, and four healthy mice and three Parkinson’s mice walking at the speed of 15.1 cm s−1 were analyzed. The y-coordinate (vertical displacement) for each marker was analyzed. All time series contained a minimum of 946 data points. Data were analyzed unfiltered so as to get a more accurate representation of the fluctuations within the time series. Furthermore, since the same instrumentation was used for all mice, it is assumed that the level of measurement noise was consistent for all mice. For the mice data set, a 2 × 3 (group by treadmill speed) analysis of variance (ANOVA) was performed on ApEn and largest LyE values for all the marker displacement data (Kaplan and Glass 1995; Wolf et al. 1985).
Establishment of a novel method for qualitative and quantitative evaluation of deglutitive tongue movement by integration of ultrasound video imaging and lateral cephalogram
Published in Orthodontic Waves, 2021
Thiri Hla-Myint, Michiko Tsuji, Shoichi Suzuki, Naoto Obayashi, Tohru Kurabayashi, Keiji Moriyama
In comparison with cineradiography, the newly developed US-cephalogram integration method was considered to be safe since there was no radiation exposure except for the cephalogram taken for the diagnosis of orthodontic treatment. Hence, this method might be applicable to longitudinal examinations of the deglutitive tongue movement in orthodontic and/or orthognathic patients before and after treatment.