Reproducible and Reliable Method for Syndesmotic Screw Fixation: An MRI-Based Cross-Sectional Image Analysis

Increased nuclear size, resulting in an increase in the relative proportion of nuclear to cytoplasmic sizes, is an important morphologic criterion for the evaluation of neoplastic and pre-neoplastic cells. This paper describes investigations into the suitability of automated image analysis for quantitating changes in nuclear and cytoplasmic cross-sectional areas in exfoliated cells from tracheas treated with carcinogen.Neoplastic and pre-neoplastic lesions were induced in the tracheas of Syrian hamsters with the carcinogen N-methyl-N-nitrosourea. Cytology samples were collected intra-tracheally with a specially designed catheter (1) and stained by a modified Papanicolaou technique. Three cytology specimens were selected from animals with normal tracheas, 3 from animals with dysplastic changes, and 3 from animals with epidermoid carcinoma. One hundred randomly selected cells on each slide were analyzed with a Bausch and Lomb Pattern Analysis System automated image analyzer.

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Gender determination of caucasoid hair using image analysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100146928 ◽

1993 ◽

Vol 51 ◽

pp. 216-217

Author(s):

T.B. Ball ◽

W.M. Hess

Keyword(s):

Image Analysis ◽

Cross Sections ◽

Scalp Hair ◽

The Body ◽

Equivalent Diameter ◽

Cross Sectional ◽

Hair Samples ◽

Length Width ◽

Morphological Differences

It has been demonstrated that cross sections of bundles of hair can be effectively studied using image analysis. These studies can help to elucidate morphological differences of hair from one region of the body to another. The purpose of the present investigation was to use image analysis to determine whether morphological differences could be demonstrated between male and female human Caucasian terminal scalp hair.Hair samples were taken from the back of the head from 18 caucasoid males and 13 caucasoid females (Figs. 1-2). Bundles of 50 hairs were processed for cross-sectional examination and then analyzed using Prism Image Analysis software on a Macintosh llci computer. Twenty morphological parameters of size and shape were evaluated for each hair cross-section. The size parameters evaluated were area, convex area, perimeter, convex perimeter, length, breadth, fiber length, width, equivalent diameter, and inscribed radius. The shape parameters considered were formfactor, roundness, convexity, solidity, compactness, aspect ratio, elongation, curl, and fractal dimension.

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Automated 3D measurement of fiber cross section morphology in handsheets

Nordic Pulp & Paper Research Journal ◽

10.3183/npprj-2012-27-02-p264-269 ◽

2012 ◽

Vol 27 (2) ◽

pp. 264-269 ◽

Cited By ~ 9

Author(s):

Christian Lorbach ◽

Ulrich Hirn ◽

Johannes Kritzinger ◽

Wolfgang Bauer

Keyword(s):

Image Analysis ◽

Cross Section ◽

Cross Sections ◽

Image Plane ◽

3D Measurement ◽

Cross Sectional ◽

Fiber Cross Section ◽

Fiber Wall ◽

Sectional Shape ◽

Cross Section Geometry

Abstract We present a method for 3D measurement of fiber cross sectional morphology from handsheets. An automated procedure is used to acquire 3D datasets of fiber cross sectional images using an automated microtome and light microscopy. The fiber cross section geometry is extracted using digital image analysis. Simple sample preparation and highly automated image acquisition and image analysis are providing an efficient tool to analyze large samples. It is demonstrated that if fibers are tilted towards the image plane the images of fiber cross sections are always larger than the true fiber cross section geometry. In our analysis the tilting angles of the fibers to the image plane are measured. The resulting fiber cross sectional images are distorted to compensate the error due to fiber tilt, restoring the true fiber cross sectional shape. We use an approximated correction, the paper provides error estimates of the approximation. Measurement results for fiber wall thickness, fiber coarseness and fiber collapse are presented for one hardwood and one softwood pulp.

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Application of Image Analysis System for Study of Activated Sludge Flocs

Water Quality Research Journal ◽

10.2166/wqrj.1986.010 ◽

1986 ◽

Vol 21 (1) ◽

pp. 130-140 ◽

Cited By ~ 4

Author(s):

Da-hong Li ◽

J. J. Ganczarczyk

Keyword(s):

Image Analysis ◽

Activated Sludge ◽

Statistical Processing ◽

Equivalent Diameter ◽

Image Analysis System ◽

Sectional Area ◽

Cross Sectional ◽

Computerized Image Analysis ◽

Sludge Flocs ◽

Analysis System

Abstract The computerized image analysis system has been successfully used for determination and statistical processing of the following geometric characteristics of activated sludge flocs: longest dimension, breadth, equivalent diameter, cross-sectional area, perimeter, elongation, and circularity. These parameters could be effectively and precisely determined by the system applied. In addition, the studied method, as compared to direct microscope observation and photography floc-sizing methods, was found to be more accurate, less time-consuming, and less dependent on the investigators.

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Yeast Morphology Assessment through Automated Image Analysis during Fermentation

Fermentation ◽

10.3390/fermentation7020044 ◽

2021 ◽

Vol 7 (2) ◽

pp. 44

Author(s):

Mario Guadalupe-Daqui ◽

Mandi Chen ◽

Katherine A. Thompson-Witrick ◽

Andrew J. MacIntosh

Keyword(s):

Image Analysis ◽

High Stress ◽

Cross Sectional Area ◽

Automated Image Analysis ◽

Yeast Cells ◽

Morphological Properties ◽

Cell Area ◽

Sectional Area ◽

Cross Sectional ◽

Industrial Fermentation

The kinetics and success of an industrial fermentation are dependent upon the health of the microorganism(s) responsible. Saccharomyces sp. are the most commonly used organisms in food and beverage production; consequently, many metrics of yeast health and stress have been previously correlated with morphological changes to fermentations kinetics. Many researchers and industries use machine vision to count yeast and assess health through dyes and image analysis. This study assessed known physical differences through automated image analysis taken throughout ongoing high stress fermentations at various temperatures (30 °C and 35 °C). Measured parameters included sugar consumption rate, number of yeast cells in suspension, yeast cross-sectional area, and vacuole cross-sectional area. The cell morphological properties were analyzed automatically using ImageJ software and validated using manual assessment. It was found that there were significant changes in cell area and ratio of vacuole to cell area over the fermentation. These changes were temperature dependent. The changes in morphology have implications for rates of cellular reactions and efficiency within industrial fermentation processes. The use of automated image analysis to quantify these parameters is possible using currently available systems and will provide additional tools to enhance our understanding of the fermentation process.

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Syndesmotic screw fixation in Weber C ankle injuries–should the screw be removed before weight bearing?

Injury ◽

10.1016/j.injury.2006.02.003 ◽

2006 ◽

Vol 37 (9) ◽

pp. 891-898 ◽

Cited By ~ 75

Author(s):

David Paul Bell ◽

Merng Koon Wong

Keyword(s):

Screw Fixation ◽

Weight Bearing ◽

Ankle Injuries ◽

Syndesmotic Screw

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Transverse Lag Screw Fixation in Midline Mandibulotomy

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348940010900318 ◽

2000 ◽

Vol 109 (3) ◽

pp. 334-339 ◽

Cited By ~ 7

Author(s):

Joseph M. Serletti ◽

John U. Coniglio ◽

Salvatore J. Pacella ◽

John D. Norante

Keyword(s):

Reliable Method ◽

Screw Fixation ◽

Postoperative Radiotherapy ◽

Major Complication ◽

Recurrent Tumor ◽

Minor Complication ◽

Anterior Cortex ◽

Lag Screw ◽

The Mean

Vertical midline mandibulotomy has provided a relatively simple and efficient means of obtaining access to intraoral tumors that are too large or too posterior to be removed transorally. Midline mandibulotomy has had the advantage of nerve and muscle preservation and places the osteotomy outside the typical field of radiotherapy, in contrast to lateral and paramedian osteotomies. Plate and screw fixation has been the usual means of osteosynthesis for these mandibulotomies; however, plate contouring over the symphyseal surface has been a time-consuming process. Unless the plate was contoured exactly, mandibular malalignment and malocclusion in dentulous patients has occurred. Use of parallel transverse lag screws has become a popular method of osteosynthesis for parasymphyseal fractures, and we have extended their use for mandibulotomy fixation. This paper reports our clinical experience with transverse lag screw fixation of midline mandibulotomies in 9 patients from 1994 to 1997. There were 7 men and 2 women with a mean age of 56 (range 35 to 71 years). The pathological diagnosis in all patients was squamous cell carcinoma; 8 cases were primary, and 1 patient presented with recurrent tumor. No tumors involved the mandibular periosteum. One patient had had previous radiotherapy, and 3 patients underwent postoperative radiotherapy. The mean follow-up has been 17 months (range 9 to 27). There was 1 minor complication and 1 major complication related to our technique. The major complication was a delayed nonunion of the mandibulotomy. This occurred because the 2 parallel screws were placed too close to one another, and this placement resulted in a delayed sagittal fracture of the anterior cortex and subsequent nonunion. Transverse lag screw fixation has not affected occlusion in our dentulous patients. Speech and diet were normal in the majority of our patients. Transverse lag screw fixation of the midline mandibulotomy has been a relatively safe, rapid, and reliable method for tumor access and postextirpation mandibular stabilization and has significant advantages over other current methods of mandibulotomy and fixation.

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