In situlabel-free static cytometry by monitoring spatiotemporal fluctuations of image gray values

In this paper, a two-stage multi-category recognition structure based on texture features is proposed. This method can solve the problem of the decline in recognition accuracy in the scene of lightweight training samples. Besides, the problem of recognition effect different in the same recognition structure caused by the unsteady iris can also be solved. In this paper’s structure, digitized values of the edge shape in the iris texture of the image are set as the texture trend feature, while the differences between the gray values of the image obtained by convolution are set as the grayscale difference feature. Furthermore, the texture trend feature is used in the first-stage recognition. The template category that does not match the tested iris is the elimination category, and the remaining categories are uncertain categories. Whereas, in the second-stage recognition, uncertain categories are adopted to determine the iris recognition conclusion through the grayscale difference feature. Then, the experiment results using the JLU iris library show that the method in this paper can be highly efficient in multi-category heterogeneous iris recognition under lightweight training samples and unsteady state.

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Prognostic value of static cytometry in transitional cell carcinoma of the bladder: Recurrence rate and survival in a group of patients at 10 years follow-up

Oncology Reports ◽

10.3892/or.15.1.213 ◽

2006 ◽

Author(s):

Tommaso Cai ◽

Edoardo Margallo ◽

Gabriella Nesi ◽

Gianluca Giubilei ◽

Michelangelo Rizzo ◽

...

Keyword(s):

Transitional Cell Carcinoma ◽

Cell Carcinoma ◽

Recurrence Rate ◽

Prognostic Value ◽

Transitional Cell ◽

Carcinoma Of The Bladder ◽

Static Cytometry ◽

Bladder Recurrence

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Does the addition of a lead foil to digital radiographic receptors influence image contrast and approximal caries lesions diagnosis?

Dentomaxillofacial Radiology ◽

10.1259/dmfr.20190384 ◽

2020 ◽

Vol 49 (4) ◽

pp. 20190384

Author(s):

Rocharles Cavalcante Fontenele ◽

Yuri Nejaim ◽

Amanda Farias Gomes ◽

Hugo Gaêta-Araujo ◽

Francisco Haiter-Neto ◽

...

Keyword(s):

Standard Deviation ◽

Image Contrast ◽

Contrast Variation ◽

Radiographic Images ◽

Posterior Teeth ◽

Diagnostic Values ◽

Caries Lesions ◽

Approximal Caries ◽

Gray Values ◽

Lead Foil

Objectives: To access the influence of the addition of a lead foil to intraoral digital radiographic receptors on image contrast and approximal caries lesions diagnosis. Methods: 40 posterior teeth were distributed in silicone phantoms composed of two premolars, two molars and a non-test canine. Radiographic images of the phantoms were obtained with and without the incorporation of a lead foil, using the Digora Optime and Digora Toto systems. Four observers scored the images for the presence of caries lesions, using a 5-point scale. Images of an aluminum step wedge were acquired with and without the incorporation of a lead foil. Gray values and standard deviation of gray values were calculated in different thickness of the step wedge and, then, contrast variation was calculated. Results: Presence of a lead foil did not influence caries lesions diagnostic values, regardless of the type of digital system (p > 0.05). In general, the objective analysis was not influenced by the presence of a lead foil in any of the tested systems (p > 0.05). However, Digora Toto images showed greater gray values, lower standard deviation of gray values and lower contrast variation, regardless of the presence of the lead foil (p < 0.05). Conclusions: The addition of a lead foil to intraoral digital receptors did not influence image contrast nor caries lesions diagnosis.

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Dynamic Epitope Expression from Static Cytometry Data: Principles and Reproducibility

PLoS ONE ◽

10.1371/journal.pone.0030870 ◽

2012 ◽

Vol 7 (2) ◽

pp. e30870 ◽

Cited By ~ 9

Author(s):

James W. Jacobberger ◽

Jayant Avva ◽

Sree N. Sreenath ◽

Michael C. Weis ◽

Tammy Stefan

Keyword(s):

Static Cytometry

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Comparison of the Delay in Processing Time and Protective Plastic Cases in Two Phosphor Plate Systems

The Scientific World JOURNAL ◽

10.1100/2012/850764 ◽

2012 ◽

Vol 2012 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Ali Murat Aktan ◽

Mehmet Ertuğrul Çiftçi ◽

Faruk Akgünlü

Keyword(s):

Image Quality ◽

Processing Time ◽

The Other ◽

Phosphor Plate ◽

Protective Case ◽

Plastic Case ◽

Gray Values

Objective. The purpose of this study was to analyze two phosphor plate systems (PSPs) (Dürr Dental, Digora Optime) according to their scanning delay and protective plastic case performances.Methods. Two PSPs using an aluminum step wedge were exposed. These plates were placed in three different protective plastic cases (manufacturers' original cases, black case, and white case) before obtaining the radiographs and were then processed immediately and 1, 5, 10, 30, 60, 120, 240, and 480 min after exposure. Mean gray values (MGVs) of the 3rd, 5th, 7th, and 9th steps of the wedges were compared using ANOVA.Results. Statistically significant differences were found between the two PSPs (). ANOVA revealed that the MGVs of four steps of the wedges were significantly different from each other for all scan delays (). MGVs increased with increasing scanning delay, except the group with Dürr plates in their original cases. Reduction in image quality began 5 min after exposure in the other Dürr plate groups.Conclusions. Within the limitations of the current study, it can be concluded that scanning delay causes a reduction in image quality, and using the manufacturer's original protective case will result in better performance of PSPs.

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