Positional relationship of superior and inferior labial artery by ultrasonography image analysis for safe lip augmentation procedures

2019 ◽  
Vol 33 (2) ◽  
pp. 158-164 ◽  
Author(s):  
Kyu‐Lim Lee ◽  
Hyung‐Jin Lee ◽  
Kwan‐Hyun Youn ◽  
Hee‐Jin Kim
Keyword(s):  
Image Analysis ◽  
Lip Augmentation ◽  
Relationship Of

Measuring pulmonary microvessel diameters using video image analysis

1995 ◽  
Vol 79 (2) ◽  
pp. 526-532 ◽  
Author(s):  
C. C. Hanger ◽  
S. C. Hillier ◽  
R. G. Presson ◽  
R. W. Glenny ◽  
W. W. Wagner
Keyword(s):  
Image Analysis ◽  
Intravital Microscopy ◽  
Video Image ◽  
Video Image Analysis ◽  
Heuristic Technique ◽  
Pulmonary Microvessels ◽  
Relationship Of

To directly determine the pressure-diameter relationship of individual pulmonary microvessels, it is necessary to measure the width of the column of blood in the vessel because microvascular walls are invisible when using intravital microscopy. To identify the margins of the blood column accurately, we developed a method for computer enhancement and measurement of vessel images. After recording microvessels on videotape, consecutive frames from the videotape were digitized by a computer. Pixels that changed from frame to frame (moving erythrocytes) were turned white, and unchanging pixels were turned black. In this way an image of the erythrocyte column with distinct edges was produced. The width of this column was measured with a heuristic technique involving interactions between the computer and the user. The measurements were reproducible and accurate. This technique has been used to measure microvascular diameters over a range of well-defined microvascular pressures and construct precise pressure-diameter curves.

Structural Characterization of Micron-scaled Reticulated Copper Foams

2011 ◽  
Vol 1304 ◽  
Author(s):  
Stephanie J Lin ◽  
Jason H. Nadler
Keyword(s):  
Image Analysis ◽  
Structural Characteristics ◽  
Porous Network ◽  
Unique Challenge ◽  
Copper Foam ◽  
Fluid Permeability ◽  
Capillary Fluid ◽  
Relationship Of ◽  
The Relationship

AbstractThe development of a multifunctional, micron-scaled, reticulated copper foam that reliably exhibits high intrinsic thermal conductivity, efficient capillary fluid and evaporative transport over a wide area presents a unique challenge. In this work, the relationship of critical foam processing variables such as sintering temperature and template size on the pore size distribution and pore neck/body ratio is investigated using image analysis. The resulting fluid permeability values of these foams are estimated by using the Kozeny Carman equation and the porosity, surface area per unit area and tortuosity obtained through image analysis. Estimating the fluid permeability of these foams is useful for predicting the mass and heat transfer within the porous network, and provides a metric for optimizing the foam’s structural characteristics for a particular application.

scholarly journals Pengukuran Modulus Geser Baja Menggunakan Analisis Osilasi Pegas-Massa

2021 ◽  
Vol 9 (1) ◽  
pp. 1-8
Author(s):  
Samuel Hia ◽  
◽  
Albertus Hariwangsa Panuluh ◽  
Keyword(s):  
Image Analysis ◽  
Shear Modulus ◽  
Spring Constant ◽  
Analysis Method ◽  
Mass System ◽  
Oscillation Analysis ◽  
Spring Wire ◽  
Modulus Measurement ◽  
Relationship Of ◽  
The Relationship

A steel shear modulus measurement has been conducted using spring-mass oscillation analysis. The purpose of this study is to determine whether the spring-mass oscillation analysis method can measure the shear modulus of the steel. In this study, springs that are used are made of steel with a spring radius of 7.86 mm, a spring wire diameter of 0.817 mm and there is no distance between the coil springs. The length of the spring is varied 7 times, i.e., 4.75 cm, 5.36 cm, 5.89 cm, 6.81 cm, 8.53 cm, 9.44 cm, and 10.87 cm. The spring radius and the diameter of the spring wire are measured using a micrometer screw, while the spring length is determined using image analysis using the Logger Pro program. The spring constant is determined from the equation of the results of the position graph fitting (x) with respect to time (t) load on the oscillating spring-mass system. The value of the shear modulus can be determined from the constants on the graph of the relationship of the spring constant to the spring length following the equation from Sommerfeld. The research measures the shear modulus is 1.24 GPa

Relationship of DNA ploidy to histology and prognosis in rhabdomyosarcoma. Comparison of flow cytometry and image analysis

Cancer ◽  
1994 ◽  
Vol 74 (12) ◽  
pp. 3227-3233 ◽  
Author(s):  
Scott E. Kilpatrick ◽  
Lisa A. Teot ◽  
Kim R. Geisinger ◽  
Paul L. Martin ◽  
Don K. Shumate ◽  
...  
Keyword(s):  
Flow Cytometry ◽  
Image Analysis ◽  
Dna Ploidy ◽  
Relationship Of

Stereotactic investigation of limbic epilepsy using a multimodal image analysis system

1990 ◽  
Vol 73 (5) ◽  
pp. 792-797 ◽  
Author(s):  
Michel F. Lévesque ◽  
Jingxi Zhang ◽  
Charles L. Wilson ◽  
Eric J. Behnke ◽  
Ronald M. Harper ◽  
...  
Keyword(s):  
Image Analysis ◽  
Image Analysis System ◽  
Electrode Implantation ◽  
Content Type ◽  
Positron Emission ◽  
Functional Images ◽  
Phantom Studies ◽  
Analysis System ◽  
And Function ◽  
Relationship Of

✓ A methodology has been developed for stereotactic investigation of limbic epilepsy using an image-analysis system that simultaneously displays different structural and functional images of the brain. The validity and accuracy of this system were established with phantom studies. Surgical planning and electrode implantation are guided by stereotactic magnetic resonance imaging, digital subtraction angiography, and positron emission tomography. This methodology provides the spatiotemporal relationship of cerebral structure and function necessary to identify seizure onset and propagation in human limbic system epilepsy.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

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