scholarly journals Three-dimensional ultrasound imaging of the pressure ulcer. A case report

2015 ◽  
Vol 17 (3) ◽  
pp. 404 ◽  
Author(s):  
Koichi Yabunaka ◽  
Shinji Iizaka ◽  
Gojiro Nakagami ◽  
Masayuki Fujioka ◽  
Hiromi Sanada
Keyword(s):  
Case Report ◽  
Ultrasound Imaging ◽  
Pressure Ulcer ◽  
Three Dimensional ◽  
Volumetric Analysis ◽  
Wound Management ◽  
Two Dimensional ◽  
Sacral Region ◽  
Wound Morphology

We report the case of a 46-year-old female who presented with a category IV pressure ulcer (PU) in the sacral region. Undermining of the PU was assessed with the aid of two-dimensional and three-dimensional ultrasound (3D-US).3D-US clearly visualized the wound in three directions and allowed determination of its volume. Our results show that volumetric analysis carried out with 3D-US enables the evaluation of wound morphology and thus better treatment of patients with PUs. The technique is simple and can be used routinely in daily wound management to assess the volume of the undermined wound.

Fetal Occipital Encephalocele: A Case Report

2021 ◽  
pp. 875647932110668
Author(s):  
Amanda Hogan ◽  
Natalie Ullmer
Keyword(s):  
Case Report ◽  
Patient Care ◽  
Treatment Planning ◽  
Neural Tube ◽  
Neural Tube Defects ◽  
Three Dimensional ◽  
Improve Patient Care ◽  
Two Dimensional ◽  
Occipital Encephalocele ◽  
Improve Patient

Encephaloceles are considered neural tube defects, but their exact cause is unknown. The outcome is dismal, and essential management and counseling are needed for patients. Two-dimensional and three-dimensional sonography can be used to detect encephaloceles as early as 11 weeks, assist in treatment planning, and improve patient care. This case report presents an occipital encephalocele diagnosed by sonography and followed until delivery.

Expanding the theory: Nonverbal determination of referents in a joystick task

2001 ◽  
Vol 24 (2) ◽  
pp. 224-225
Author(s):  
Katherine A. Leighty ◽  
Sarah E. Cummins-Sebree ◽  
Dorothy M. Fragaszy
Keyword(s):  
Three Dimensional ◽  
Two Dimensional ◽  
Nonhuman Species

The arguments of Stoffregen & Bardy for studying perception based on the global array are intriguing. This theory can be examined in nonhuman species using nonverbal tasks. We examine how monkeys master a skill that incorporates a two-dimensional/three-dimensional interface. We feel this provides excellent support for Stoffregen & Bardy's theory.

Three-Dimensional Volumetric Ultrasound Imaging of Arterial Pathology from Two-Dimensional Intravascular Ultrasound: An in Vitro Study

Angiology ◽  
1994 ◽  
Vol 45 (4) ◽  
pp. 253-264 ◽  
Author(s):  
Krishnaswamy Chandrasekaran ◽  
Chandra M. Sehgal ◽  
Tsui-Lieh Hsu ◽  
Nancy A. Young ◽  
Arthur J. D'Adamo ◽  
...  
Keyword(s):  
Intravascular Ultrasound ◽  
Ultrasound Imaging ◽  
Three Dimensional ◽  
In Vitro Study ◽  
Vitro Study ◽  
Two Dimensional ◽  
Volumetric Ultrasound

The method of caustics for the determination of normal loads acting on surfaces of elastic bodies

1980 ◽  
Vol 15 (1) ◽  
pp. 37-41 ◽  
Author(s):  
P S Theocaris ◽  
N I Ioakimidis
Keyword(s):  
Three Dimensional ◽  
Contact Problems ◽  
Two Dimensional ◽  
Concentrated Force ◽  
Elastic Bodies ◽  
Plate And Shell ◽  
Elasticity Problems ◽  
Three Dimensional Elasticity ◽  
Quantities Of Interest

The optical method of caustics constitutes an efficient experimental technique for the determination of quantities of interest in elasticity problems. Up to now, this method has been applied only to two-dimensional elasticity problems (including plate and shell problems). In this paper, the method of caustics is extended to the case of three-dimensional elasticity problems. The particular problems of a concentrated force and a uniformly distributed loading acting normally on a half-space (on a circular region) are treated in detail. Experimentally obtained caustics for the first of these problems were seen to be in satisfactory agreement with the corresponding theoretical forms. The treatment of various, more complicated, three-dimensional elasticity problems, including contact problems, by the method of caustics is also possible.

scholarly journals Two-dimensional and three-dimensional ultrasound imaging of suburethral slings

2005 ◽  
Vol 26 (2) ◽  
pp. 175-179 ◽  
Author(s):  
H. P. Dietz ◽  
C. Barry ◽  
Y. N. Lim ◽  
A. Rane
Keyword(s):  
Ultrasound Imaging ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Suburethral Slings

scholarly journals Identification and Endodontic Management of Middle Mesial Canal in Mandibular Second Molar Using Cone Beam Computed Tomography

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Bonny Paul ◽  
Kavita Dube
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Digital Radiography ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Two Dimensional ◽  
Second Molar ◽  
Two Dimensional Image ◽  
Mandibular Second Molar

Endodontic treatments are routinely done with the help of radiographs. However, radiographs represent only a two-dimensional image of an object. Failure to identify aberrant anatomy can lead to endodontic failure. This case report presents the use of three-dimensional imaging with cone beam computed tomography (CBCT) as an adjunct to digital radiography in identification and management of mandibular second molar with three mesial canals.

scholarly journals Stitching of sensor-navigated 3D ultrasound datasets for the determination of large thyroid volumes – a phantom study

2018 ◽  
Vol 20 (4) ◽  
pp. 480 ◽  
Author(s):  
Martin Freesmeyer ◽  
Leonard Knichel ◽  
Christian Kuehnel ◽  
Thomas Winkens
Keyword(s):  
Ad Hoc ◽  
Clinical Performance ◽  
Three Dimensional ◽  
Thyroid Volume ◽  
Correlation Coefficients ◽  
3D Ultrasound ◽  
Volumetric Analysis ◽  
High Level ◽  
Clinical Equipment

Aims: Thyroid volume has to be measured in goiters prior to radioiodine treatment to calculate the needed amount of radioactivity. Modern clinical equipment for ultrasonography shows the trend to smaller probes, so that larger goiters do not fit any longer into the probe’s field of view. This study evaluated the feasibility and accuracy of stitching procedures applied to thyroid volumetric analysis performed using three-dimensional ultrasound (3D-US).Material and methods: Ad hoc thyroid phantoms of different shapes (regular, nodular, thickened isthmus) and volumes (ranging between 50 and 400 mL) were developed. In 15 such phantoms the left and right lobes were separately scanned, and the 3D-US datasets were then assembled (stitched) using predefined landmarks and dedicated software. Volumetric analysis was then assessed via a conventional ellipsoid model (em) and manual tracing (mt). The correlation of measured and reference volumes was determined using Pearson’s correlation coefficients and Bland and Altman limits of agreement.Results: The results showed a high level of agreement (with correlation coefficients ranging from 0.974 to 0.999) for all shapes and volumes tested, including the largest volume of 400 mL. The mt method, although more time consuming, proved superior to the em.Conclusions: Stitching-mediated thyroid volumetric analysis is accurate, and its clinical performance should be investigated in future studies

Electron Crystallographic Determination of the Structure of Bacteriorhodopsin

1990 ◽  
Vol 48 (1) ◽  
pp. 90-91
Author(s):  
R. Henderson ◽  
J.M. Baldwin ◽  
T.A. Ceska ◽  
E. Beckman ◽  
F. Zemlin ◽  
...  
Keyword(s):  
High Resolution ◽  
Proton Pump ◽  
Three Dimensional ◽  
Atomic Resolution ◽  
Two Dimensional ◽  
New Methods ◽  
Density Map ◽  
Diffraction Patterns

The light driven proton pump bacteriorhodopsin (bR) occurs naturally as two-dimensional crystals. A three-dimensional density map of the structure, at near atomic resolution, has been obtained by studying the crystals using electron cryo-microscopy to obtain diffraction patterns and high resolution micrographs (1).New methods have been developed for analysing micrographs from tilted specimens, incorporating the methods previously developed for untilted specimens that enable large areas to be analysed and corrected for distortions. Data from 72 images, from both tilted and untilted specimens, have been analysed to produce the phases of 2700 independent Fourier components of the structure. The amplitudes of these components have been accurately measured from 150 diffraction patterns. Together, these data represent about half of the full three-dimensional transform to 3.5 Å. The distribution of the data which is included in the map is shown in fig. 1. For specimen tilts up to around 20° the data is essentially complete. For higher tilts the data is more sparsely sampled, and is at present about half complete.

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