Characterization of controlled cortical impact devices by high-speed image analysis. 2018

Yeonho Kim, and Amanda H Fu, and Laura B Tucker, and Jiong Liu, and Joseph T McCabe
Department of Anatomy, Physiology & Genetics, F.E. Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, 20814, USA.

As a consequence of their commercial availability, ease of use, and reproducibility, controlled cortical impact (CCI) devices have attained significant prevalence in preclinical traumatic brain injury research. With a CCI, the severity of injury is controlled by varying the impact depth, velocity, and duration, but the actual performance of the device is not well appreciated, partly because of the velocity and short travel distance to impact. This study used a high-speed video digital camera to investigate the performance of five electromagnetically driven CCI devices of the same model. Videography indicated that the impactor tip made a series of distinctive vertical advances and retractions before it attained the desired preset depth; this was also observed in male mouse CCI tests. The impactor tip was also observed to move in the horizontal direction by .8-1.6 mm. On the first advance, the tip extended a distance that was shorter than the preset depth and the velocity of impactor tip was slightly faster than the preset values for three of the five machines. One of the devices was evaluated on four separate occasions over a 14-month period and was found to operate consistently over time. Overall, differences in impact depth and velocity between the devices were modest, suggesting that comparisons of experimental results from different laboratories will generally be informative, particularly if reports provide relevant descriptions of neuropathology. However, the repetitive extension and retraction and horizontal movement of the tip suggests caution in modeling CCI as a single injurious event.

UI MeSH Term Description Entries
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D002540 Cerebral Cortex The thin layer of GRAY MATTER on the surface of the CEREBRAL HEMISPHERES that develops from the TELENCEPHALON and folds into gyri and sulci. It reaches its highest development in humans and is responsible for intellectual faculties and higher mental functions. Allocortex,Archipallium,Cortex Cerebri,Cortical Plate,Paleocortex,Periallocortex,Allocortices,Archipalliums,Cerebral Cortices,Cortex Cerebrus,Cortex, Cerebral,Cortical Plates,Paleocortices,Periallocortices,Plate, Cortical
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004867 Equipment Design Methods and patterns of fabricating machines and related hardware. Design, Equipment,Device Design,Medical Device Design,Design, Medical Device,Designs, Medical Device,Device Design, Medical,Device Designs, Medical,Medical Device Designs,Design, Device,Designs, Device,Designs, Equipment,Device Designs,Equipment Designs
D000070642 Brain Injuries, Traumatic A form of acquired brain injury which occurs when a sudden trauma causes damage to the brain. Trauma, Brain,Traumatic Brain Injury,Encephalopathy, Traumatic,Injury, Brain, Traumatic,TBI (Traumatic Brain Injury),TBIs (Traumatic Brain Injuries),Traumatic Encephalopathy,Brain Injury, Traumatic,Brain Trauma,Brain Traumas,Encephalopathies, Traumatic,TBI (Traumatic Brain Injuries),Traumas, Brain,Traumatic Brain Injuries,Traumatic Encephalopathies
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014741 Video Recording The storing or preserving of video signals to be played back later via a transmitter or receiver. Audiovisual Recording,Videorecording,Audiovisual Recordings,Recording, Audiovisual,Recording, Video,Recordings, Audiovisual,Recordings, Video,Video Recordings,Videorecordings
D015203 Reproducibility of Results The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results. Reliability and Validity,Reliability of Result,Reproducibility Of Result,Reproducibility of Finding,Validity of Result,Validity of Results,Face Validity,Reliability (Epidemiology),Reliability of Results,Reproducibility of Findings,Test-Retest Reliability,Validity (Epidemiology),Finding Reproducibilities,Finding Reproducibility,Of Result, Reproducibility,Of Results, Reproducibility,Reliabilities, Test-Retest,Reliability, Test-Retest,Result Reliabilities,Result Reliability,Result Validities,Result Validity,Result, Reproducibility Of,Results, Reproducibility Of,Test Retest Reliability,Validity and Reliability,Validity, Face
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

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