Development and Validation of a High Fidelity 3-D Computational Spine Model That Incorporates Spatial Material Density Variations

2008 ◽  
Author(s):  
Ricardo A. Diaz-Silva ◽  
Nesrin Sarigul-Klijn
Keyword(s):  
Computed Tomography ◽  
Healthy Subject ◽  
Noninvasive Evaluation ◽  
High Fidelity ◽  
Computational Results ◽  
Material Density ◽  
Computed Tomography Scans ◽  
Spine Model ◽  
Back Problems ◽  
Development And Validation

Anatomically accurate high fidelity computational model of human spine is developed from Computed Tomography scans of a healthy subject and validated against experimental and other computational results. Procedures developed in this work will serve useful in noninvasive evaluation of patients with back problems. The advantage of this approach is that the model can be tailored to specific individual or specimen.

scholarly journals Degrees of Reality

2012 ◽  
Vol 116 (6) ◽  
pp. 1204-1209 ◽  
Author(s):  
Karl Schebesta ◽  
Michael Hüpfl ◽  
Bernhard Rössler ◽  
Helmut Ringl ◽  
Michael P. Müller ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Upper Airway ◽  
High Fidelity ◽  
Trauma Patients ◽  
Human Patient ◽  
Patient Simulator ◽  
Airway Anatomy ◽  
Radiographic Measurements ◽  
Patient Simulators ◽  
Computed Tomography Scans

Background Human patient simulators and airway training manikins are widely used to train airway management skills to medical professionals. Furthermore, these patient simulators are employed as standardized "patients" to evaluate airway devices. However, little is known about how realistic these patient simulators and airway-training manikins really are. This trial aimed to evaluate the upper airway anatomy of four high-fidelity patient simulators and two airway trainers in comparison with actual patients by means of radiographic measurements. The volume of the pharyngeal airspace was the primary outcome parameter. Methods Computed tomography scans of 20 adult trauma patients without head or neck injuries were compared with computed tomography scans of four high-fidelity patient simulators and two airway trainers. By using 14 predefined distances, two cross-sectional areas and three volume parameters of the upper airway, the manikins' similarity to a human patient was assessed. Results The pharyngeal airspace of all manikins differed significantly from the patients' pharyngeal airspace. The HPS Human Patient Simulator (METI®, Sarasota, FL) was the most realistic high-fidelity patient simulator (6/19 [32%] of all parameters were within the 95% CI of human airway measurements). Conclusion The airway anatomy of four high-fidelity patient simulators and two airway trainers does not reflect the upper airway anatomy of actual patients. This finding may impact airway training and confound comparative airway device studies.

scholarly journals Deep Learning based Staging of Bone Lesions from Computed Tomography Scans (January 2021)

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Samira Masoudi ◽  
Sherif Mehralivand ◽  
Stephanie A. Harmon ◽  
Nathan Lay ◽  
Liza Lindenberg ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Deep Learning ◽  
Bone Lesions ◽  
Computed Tomography Scans

Utility of Head Computed Tomography Scans Prior to Outpatient Follow-up for Low-Risk Mild Traumatic Brain Injury

2021 ◽  
Author(s):  
Matthew W. Weber ◽  
Jeffrey Z. Nie ◽  
Victoria L. Watson ◽  
Nathan J. Nordmann ◽  
Joseph Bernard ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Traumatic Brain Injury ◽  
Brain Injury ◽  
Mild Traumatic Brain Injury ◽  
Low Risk ◽  
Computed Tomography Scans ◽  
Head Computed Tomography

PP159 Telemedicine In Paraguay: Contributions Of The Institute Of Health Sciences Research, National University Of Asunción

2020 ◽  
Vol 36 (S1) ◽  
pp. 18-18
Author(s):  
Ronald Rivas ◽  
Pedro Galván
Keyword(s):  
Public Health ◽  
Biomedical Engineering ◽  
List Type ◽  
Telemedicine System ◽  
Cellular Telephony ◽  
Imaging Department ◽  
Number Of Patients ◽  
Computed Tomography Scans ◽  
National University ◽  
Development And Validation

IntroductionThe modalities of telemedicine that have been developed and applied so far by the Department of Biomedical Engineering and Imaging at the National University of Asunción (IICS-UNA) are as follows: (i) telediagnosis: the remote sending of data, signals, and images for diagnostic purposes; (ii) general telediagnostic imaging; (iii) telemonitoring (including telemetry): remote monitoring of vital parameters to provide automatic or semi-automatic surveillance or alarm services in emergencies, epidemiology, or tele-public health; and (iv) tele-education: the use of telematic networks to provide virtual platforms for educating and training health professionals.MethodsWe conducted a comprehensive review of the scientific works developed by the IICS-UNA in order to evaluate the systematic implementation of Telemedicine in Paraguay. Documents, pilot projects (satellite telegraphy), telediagnostic research, telematics, tele-education, published articles, and statistical data (number of patients attending or studies performed, etcetera) relating to the implementation of the National Telemedicine System by the Ministry of Public Health and Social Welfare since 1999 were reviewed.ResultsImplementation of the telemedicine system has meant that 472,038 patients have attended referral centers nationwide, with 297,999 electrocardiographs, 165,323 computed tomography scans, and 8,697 electroencephalograms being conducted. Projects developed within the framework of the Telemedicine Research Line have included the following: (i)Development and validation of a clinical telemicroscopy system based on cellular telephony;(ii)Implementation of a telemetry system for temperature monitoring of the collection of biological samples from a biomedical research center; and(iii)Production and development of a virtual campus at the National University of Asunción.ConclusionsGiven the current healthcare environment, developing a line of research based on telemedicine is a proactive step, since telemedicine provides an alternative solution to the problem of access to the health system. That is why the IICS-UNA Biomedical Engineering and Imaging Department has developed telemedicine as one of its main lines of research.

Correlation between tympanometry volume and three-dimensional computed tomography mastoid volumetry in tympanoplasty candidates

2021 ◽  
pp. 1-5
Author(s):  
L Epprecht ◽  
L Qingsong ◽  
N Stenz ◽  
S Hashimi ◽  
T Linder
Keyword(s):  
Computed Tomography ◽  
Tympanic Membrane ◽  
Cell Volume ◽  
Radiation Injury ◽  
Three Dimensional ◽  
Non Invasive ◽  
Tympanic Membrane Perforations ◽  
Computed Tomography Scans ◽  
Air Cells ◽  
Mastoid Air Cells

Abstract Objective Ventilation of the middle ear and mastoid air cells is believed to play an important role in the pathogenesis of chronic ear disease. Traditionally, ventilation is assessed by computed tomography. However, this exposes patients to cumulative radiation injury. In cases with a perforation in the tympanic membrane, tympanometry potentially presents a non-invasive alternative to measure the ventilated middle-ear and mastoid air cell volume. This study hypothesised that total tympanometry volume correlates with ventilated middle-ear and mastoid air cell volume. Method Total tympanometry volume was compared with ventilated middle-ear and mastoid air cell volume on computed tomography scans in 20 tympanic membrane perforations. Results There was a high correlation between tympanometry and computed tomography volumes (r = 0.78; p < 0.001). A tympanometry volume more than 2 ml predicted good ventilation on computed tomography. Conclusion These results may help reduce the need for pre-operative computed tomography in uncomplicated cases with tympanic membrane perforations.

Anatomically robust proton therapy using multiple planning computed tomography scans for locally advanced prostate cancer

2021 ◽  
Vol 60 (5) ◽  
pp. 598-604
Author(s):  
Kia Busch ◽  
Benjamin Dahl ◽  
Stine E. Petersen ◽  
Heidi S. Rønde ◽  
Lise Bentzen ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Computed Tomography ◽  
Proton Therapy ◽  
Advanced Prostate Cancer ◽  
Locally Advanced ◽  
Locally Advanced Prostate Cancer ◽  
Computed Tomography Scans
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