scholarly journals A statistical framework for the registration of 3D knee implant components to single-plane X-ray images

2008 ◽  
Author(s):  
J. Hermans ◽  
J. Bellemans ◽  
F. Maes ◽  
D. Vandermeulen ◽  
P. Suetens
Keyword(s):  
Single Plane ◽  
X Ray ◽  
Statistical Framework

scholarly journals Morphological consistency of bilateral hip joints in adults based on the X-ray and CT data

2021 ◽  
Author(s):  
Ran Zhao ◽  
Hong Cai ◽  
Hua Tian ◽  
Ke Zhang
Keyword(s):  
Hip Joint ◽  
Morphological Difference ◽  
Medullary Cavity ◽  
Size Difference ◽  
Single Plane ◽  
X Ray ◽  
Stem Size ◽  
The Difference ◽  
Ct Data ◽  
Anatomical Parameters

Abstract Purpose The application of the anatomical parameters of the contralateral hip joint to guide the preoperative template of the affected side relies on the bilateral hip symmetry. We investigated the bilateral hip symmetry and range of anatomical variations by measurement and comparison of bilateral hip anatomical parameters. Methods This study included 224 patients (448 hips) who were diagnosed with osteoarthritis (OA) and avascular necrosis (AVN) of the femur head, and underwent bilateral primary total hip arthroplasty (THA) in our hospital from January 2012 to August 2020. Imaging data included 224 patients X-ray and 30 CT data at the end of the cohort. Anatomical parameters, including the acetabular abduction angle and trochanteric height, were measured using the Noble method. Postoperative measurements included stem size, difference of leg length and offset. Results Except for the isthmus width, there were no significant differences in the anatomical morphology of the hip joint. Among the demographic factors, there was a correlation between body weight and NSA. Among various anatomical parameters, a correlation was present between medullary cavity widths of T + 20, T, and T − 20. The difference in the use of stem size is not due to the morphological difference of bilateral medullary cavity, but due to the different of 1- or 2-stage surgery. Conclusion Bilateral symmetry was present among the patients with normal morphology of the hip medullary cavity, theoretically confirming the feasibility of structural reconstruction of the hip joint using the hip joint on the uninjured side. Additionally, the difference in the morphology of the hip medullary cavity is not present in a single plane but is synergistically affected by multiple adjacent planes.

scholarly journals In Situ Wettability Investigation of Aging of Sandstone Surface in Alkane via X-ray Microtomography

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5594
Author(s):  
Nilesh Kumar Jha ◽  
Maxim Lebedev ◽  
Stefan Iglauer ◽  
Jitendra S. Sangwai ◽  
Mohammad Sarmadivaleh
Keyword(s):  
Contact Angles ◽  
Wettability Alteration ◽  
Experimental Investigations ◽  
Rock Surface ◽  
Phase System ◽  
Intermediate Water ◽  
Single Plane ◽  
X Ray ◽  
Sandstone Rock

Wettability of surfaces remains of paramount importance for understanding various natural and artificial colloidal and interfacial phenomena at various length and time scales. One of the problems discussed in this work is the wettability alteration of a three-phase system comprising high salinity brine as the aqueous phase, Doddington sandstone as porous rock, and decane as the nonaqueous phase liquid. The study utilizes the technique of in situ contact angle measurements of the several 2D projections of the identified 3D oil phase droplets from the 3D images of the saturated sandstone miniature core plugs obtained by X-ray microcomputed tomography (micro-CT). Earlier works that utilize in situ contact angles measurements were carried out for a single plane. The saturated rock samples were scanned at initial saturation conditions and after aging for 21 days. This study at ambient conditions reveals that it is possible to change the initially intermediate water-wet conditions of the sandstone rock surface to a weakly water wetting state on aging by alkanes using induced polarization at the interface. The study adds to the understanding of initial wettability conditions as well as the oil migration process of the paraffinic oil-bearing sandstone reservoirs. Further, it complements the knowledge of the wettability alteration of the rock surface due to chemisorption, usually done by nonrepresentative technique of silanization of rock surface in experimental investigations.

Monolayer-resolved x-ray-excited Auger-electron diffraction from single-plane emission in GaAs

1993 ◽  
Vol 48 (16) ◽  
pp. 11838-11845 ◽  
Author(s):  
M. Seelmann-Eggebert ◽  
R. Fasel ◽  
E. C. Larkins ◽  
J. Osterwalder
Keyword(s):  
Electron Diffraction ◽  
Auger Electron ◽  
Single Plane ◽  
X Ray

A unified statistical framework for material decomposition using multienergy photon counting x-ray detectors

2013 ◽  
Vol 40 (9) ◽  
pp. 091913 ◽  
Author(s):  
Jiyoung Choi ◽  
Dong-Goo Kang ◽  
Sunghoon Kang ◽  
Younghun Sung ◽  
Jong Chul Ye
Keyword(s):  
Photon Counting ◽  
Material Decomposition ◽  
X Ray ◽  
Statistical Framework

scholarly journals Accuracy of Single Plane X-Ray Image-Based Technique for Assessment of Knee Kinematics

2009 ◽  
Vol 4 (2) ◽  
pp. 192-200 ◽  
Author(s):  
Koichi KOBAYASHI ◽  
Ken-ichi ODAGAWA ◽  
Makoto SAKAMOTO ◽  
Yuji TANABE
Keyword(s):  
Knee Kinematics ◽  
Single Plane ◽  
X Ray

scholarly journals Inverse filtering for time, delay and integration X-ray imaging

2011 ◽  
Vol 9 ◽  
pp. 135-138
Author(s):  
M. Rosenbaum ◽  
W. Sauer-Greff ◽  
R. Urbansky
Keyword(s):  
Time Delay ◽  
Food Industry ◽  
X Rays ◽  
Inverse Filtering ◽  
Single Plane ◽  
X Ray ◽  
Ccd Sensor ◽  
X Ray Imaging ◽  
Time Delay And Integration ◽  
Shift Speed

Abstract. In food industry, most finished products are scanned by X-ray for contaminations. These X-ray machines continuously scan the product passing through. To minimize the required X-ray power, a Time, Delay and Integration (TDI) CCD sensor is used to capture the image. While the product moves across the sensor area, the angle of the X-rays changes during the pass. This can be compensated for by adjusting the sensor shift speed to focus on a single plane of the product. If the product has a significant thickness, the image will show artifacts due to the laminographic effect. In this contribution we demonstrate that by the use of inverse filtering images which are focused on planes of different height can be generated out of a single X-ray image.

scholarly journals A fast and robust technique for 3D–2D registration of CT to single plane X-ray fluoroscopy

2014 ◽  
Vol 2 (2) ◽  
pp. 76-89 ◽  
Author(s):  
Md. Nazmul Haque ◽  
Mark R. Pickering ◽  
Abdullah Al Muhit ◽  
Michael R. Frater ◽  
Jennie M. Scarvell ◽  
...  
Keyword(s):  
Single Plane ◽  
X Ray
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