Evaluation of the diagnostic value of a computed radiography system by comparison of digital hard copy images with screen–film mammography: results of a prospective clinical trial

The combined use of AMBER (Advanced Multiple Beam Equalization Radiography) and a digital storage phosphor (SP) radiography system was evaluated for chest radiography in a pilot study with 4 patients. Four image modes with different dose levels were compared: the SP in combination with an AMBER equalized exposure (SP/AMBER) and 3 nonequalized exposures with dose levels corresponding to the respective calculated AMBER lung dose (SP/lung field dose), the calculated AMBER mediastinal dose (SP/mediastinal dose) and the calculated AMBER average dose (SP/average dose). All image modes were matched for Hurter and Driffield characteristics and subjectively rated according to visibility of details. The improved signal-to-noise (S/N) ratio of SP/AMBER resulted in a better visualization of structures in the mediastinum and the basal lung where SP/lung field dose scored lowest. For the central lung no quality differences were seen between techniques. The compressed dynamic range of the SP/AMBER images was more easily displayed on the hard-copy film. The combination of AMBER with SP radiography promises to overcome the dynamic range limitations of digital displays while, at moderate doses, giving better S/N and image quality than standard SP technique.

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Oxidative Stress Markers Diagnostic Value in Metabolic Syndrome Dermal Manifestations: a Prospective Clinical Trial

10.7546/crabs.2018.02.15 ◽

2018 ◽

Author(s):

Julija Voicehovska ◽

Mila Vlaskovska ◽

Jana Janovska ◽

Sergejs Babikovs ◽

Vladimirs Voicehovskis ◽

...

Keyword(s):

Oxidative Stress ◽

Metabolic Syndrome ◽

Clinical Trial ◽

Diagnostic Value ◽

Prospective Clinical Trial ◽

Oxidative Stress Markers ◽

Stress Markers

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Investigation of Keyes Skin Biopsy Instrument for Intestinal Biopsy Versus a Standard Biopsy Technique

Journal of the American Animal Hospital Association ◽

10.5326/0400405 ◽

2004 ◽

Vol 40 (5) ◽

pp. 405-410 ◽

Cited By ~ 6

Author(s):

Matthew M. Keats ◽

Robert Weeren ◽

Paul Greenlee ◽

Krista L. Evans ◽

Anne C. Minihan

Keyword(s):

Clinical Trial ◽

Skin Biopsy ◽

Diagnostic Value ◽

Prospective Clinical Trial ◽

Intestinal Biopsy ◽

Complication Rates ◽

Sample Quality ◽

Biopsy Technique ◽

Biopsy Punch ◽

Biopsy Methods

A prospective, clinical trial was conducted using 12 dogs that were presented for intestinal biopsy. Comparisons were made between paired jejunal biopsies collected using a Keyes biopsy punch and a standard scissor excisional technique. There were no differences in speed of collection, diagnostic value of specimens, complication rates, or sample quality. In this study, the Keyes skin punch was found to be safe, rapid, and diagnostic in all animals. Based on results of this study, the use of a Keyes punch instrument can be recommended as an alternative to other open intestinal biopsy methods.

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