Craniotomy with ridges: a time and cost-efficient technique for unwavering fixation of bone flap

2018 ◽  
Author(s):  
Amit Kumar Upadhyay
Keyword(s):  
Bone Flap ◽  
Efficient Technique ◽  
Cost Efficient

scholarly journals P.120 Rapid intraoperative reconstruction of cranial implants for craniotomy procedures: a feasibility study

2019 ◽  
Vol 46 (s1) ◽  
pp. S45
Author(s):  
K Beaulieu ◽  
M Kunz ◽  
R Alkins
Keyword(s):  
Imaging Modality ◽  
Bone Flap ◽  
Patient Specific ◽  
Great Promise ◽  
Surface Model ◽  
Bone Implants ◽  
Scanning Time ◽  
Rapid Generation ◽  
Cranial Implants ◽  
Cost Efficient

Background: The aim of this study was to investigate intraoperative methods to generate patient-specific PMMA bone implants during a craniotomy. The proposed methods combine a cost-efficient, and non-invasive structured light scanner (SLS) as an imaging modality and a prototype printer for rapid generation of implant molds. Methods: This simulation study was performed using retrospective data from three craniotomy patients. The extracted bone flap and the cranial defect were scanned using a SLS, which generates a 3D surface model of an object by projecting a series of light-patterns on it. Prototype printed implant models were generated using two different techniques. The molds were then used to shape PMMA bone implants. These implants were evaluated regarding their accuracy to reconstruct the natural skull anatomy and compared to freehand formed implants. Results: The patient-specific bone implants reconstructed the preoperative anatomy with an average RMS error of 1.37mm (StDev 0.27), compared to an error of 1.5mm (StDev 0.43) for the freehand shaped implants. On average the intraoperative scanning time was 4.7min. The average time to generate and print the implant molds was 204 min. Conclusions: Results of this study have shown great promise for the proposed method to be used for patient-specific bone flap reconstruction during craniotomies.

scholarly journals Exercise echocardiography is an accurate and cost-efficient technique for detection of coronary artery disease in women

1995 ◽  
Vol 26 (2) ◽  
pp. 335-341 ◽  
Author(s):  
Thomas H. Marwick ◽  
Terry Anderson ◽  
M.John Williams ◽  
Brian Haluska ◽  
Jacques A. Melin ◽  
...  
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Efficient Technique ◽  
Exercise Echocardiography ◽  
Cost Efficient ◽  
Artery Disease

Local protection: A cost efficient technique for reliable virtual infrastructure design

2014 ◽  
Vol 11 ◽  
pp. 154-166 ◽  
Author(s):  
Hao Di ◽  
Vishal Anand ◽  
Dan Liao ◽  
Du Xu ◽  
Lemin Li ◽  
...  
Keyword(s):  
Efficient Technique ◽  
Virtual Infrastructure ◽  
Local Protection ◽  
Infrastructure Design ◽  
Cost Efficient

scholarly journals Photochemical C–H Arylation of Heteroarenes for DNA-Encoded Library Synthesis

2022 ◽  
Author(s):  
Matthias Krumb ◽  
Lisa Marie Kammer ◽  
Shorouk O. Badir ◽  
María Jesús Cabrera-Afonso ◽  
Victoria E. Wu ◽  
...  
Keyword(s):  
Pharmaceutical Industry ◽  
Efficient Technique ◽  
Library Synthesis ◽  
Cost Efficient

DNA-encoded library (DEL) technology has emerged as a time- and cost-efficient technique for the identification of therapeutic candidates in the pharmaceutical industry. Although several reaction classes have been successfully validated...

Characterization of machined polystyrene foam

1989 ◽  
Vol 47 ◽  
pp. 372-373
Author(s):  
C. W. Price ◽  
E. F. Lindsey ◽  
R. M. Franks ◽  
M. A. Lane
Keyword(s):  
Surface Finish ◽  
Cell Walls ◽  
Surface Structures ◽  
Efficient Technique ◽  
Low Density ◽  
Polystyrene Foam ◽  
Planar Surfaces ◽  
Machining Characteristics

Diamond-point turning is an efficient technique for machining low-density polystyrene foam, and the surface finish can be substantially improved by grinding. However, both diamond-point turning and grinding tend to tear and fracture cell walls and leave asperities formed by agglomerations of fragmented cell walls. Vibratoming is proving to be an excellent technique to form planar surfaces in polystyrene, and the machining characteristics of vibratoming and diamond-point turning are compared.Our work has demonstrated that proper evaluation of surface structures in low density polystyrene foam requires stereoscopic examinations; tilts of + and − 3 1/2 degrees were used for the stereo pairs. Coating does not seriously distort low-density polystyrene foam. Therefore, the specimens were gold-palladium coated and examined in a Hitachi S-800 FESEM at 5 kV.

When the Bone Flap Hits the Floor

2008 ◽  
Vol 2008 ◽  
pp. 223-224
Author(s):  
D.H. Kim
Keyword(s):  
Bone Flap
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