scholarly journals Latent Fingerprint Detection with SYPRO®Rose Plus Protein Blot Stain

2002 ◽  
Vol 2 ◽  
pp. 542-545 ◽  
Author(s):  
Kimberly K. Bouldin ◽  
E. Roland Menzel
Keyword(s):  
Lanthanide Complexes ◽  
Imaging Techniques ◽  
Smooth Surfaces ◽  
Time Resolved ◽  
Latent Fingerprint ◽  
Background Fluorescence ◽  
Use Of Time ◽  
Time Resolved Imaging ◽  
Fingerprint Detection ◽  
Porous Substrates

Lanthanide complexes are employed in photoluminescence detection of fingerprints because their long luminescence lifetimes allow use of time-resolved imaging techniques to suppress problematic background fluorescence. To date, however, these complexes have been unsuccessful when used in developing old fingerprints on porous substrates. SYPRO®Rose Plus Protein Blot Stain remedies this shortcoming; it lends itself to smooth surfaces as well, thus having potential as a universal fingerprint reagent.

NANOSECOND RESOLUTION IN FINGERPRINT IMAGING USING OPTICAL TECHNIQUE

2005 ◽  
Vol 04 (04) ◽  
pp. 695-700 ◽  
Author(s):  
U. S. DINISH ◽  
Z. X. CHAO ◽  
L. K. SEAH ◽  
V. M. MURUKESHAN
Keyword(s):  
Steady State ◽  
Optical Technique ◽  
Time Resolved ◽  
Latent Fingerprint ◽  
Electrical Signals ◽  
Background Fluorescence ◽  
Fluorescence Measurements ◽  
Dynamic Methods ◽  
Resolution Imaging

The extension of fluorescence measurements of samples from steady state to dynamic methods offers the possibility to extract valuable information at the micro and nano level. Imaging of fluorescent samples with nanosecond resolution often imposes challenging problems, especially when dealing with very weak optical and electrical signals. In this context, this paper discusses the detection of latent fingerprint samples with nanosecond resolution. Imaging of fingerprint samples, which are deposited on strongly fluorescing substrates, is carried out by the subsequent suppression of the unwanted background fluorescence emissions using the time-resolved optical technique. "signature" characterisation of fingerprint samples treated with fluorescent magnetic powders is also carried out.

scholarly journals Trace Explosives Detection by Photoluminescence

2004 ◽  
Vol 4 ◽  
pp. 55-66 ◽  
Author(s):  
E. Roland Menzel ◽  
Kimberly K. Bouldin ◽  
Russell H. Murdock
Keyword(s):  
Field Tests ◽  
Explosives Detection ◽  
Background Color ◽  
Time Resolved ◽  
Counter Terrorism ◽  
Background Fluorescence ◽  
Test Kit ◽  
Trace Explosives ◽  
Time Resolved Imaging ◽  
Magnitude Sensitivity

Some field tests in counter-terrorism efforts to detect explosive traces employ chemistries that yield colored products. We have examined a test kit of this kind, ETKPlus, based on widely used chemistries and employed extensively by the Israel Police. Our investigation focuses on the prospect of gaining sensitivity by replacing the normal colorimetric modality with photoluminescence detection, which, to our knowledge, has not been explored to date. We find two or more orders of magnitude sensitivity gains for all explosives studied, using field-worthy photoluminescence techniques. We have also investigated a general lanthanide-based photoluminescence approach which shows promise and the ability to photoluminescence-detect trace explosives in the presence of intense background color and/or background fluorescence by time-resolved imaging.

A Scanning Beam Time-Resolved Imaging System for Fingerprint Detection

2000 ◽  
Vol 45 (3) ◽  
pp. 14729J ◽  
Author(s):  
Robert D. Roorda ◽  
Alfonso C. Ribes ◽  
Savvas Damaskinos ◽  
A.E. (Ted) (Ted) Dixon ◽  
E. Roland Menzel
Keyword(s):  
Imaging System ◽  
Time Resolved ◽  
Scanning Beam ◽  
Time Resolved Imaging ◽  
Fingerprint Detection

Dynamic, Time-Resolved Computed Tomography Angiography Technique to Characterize Aortic Endoleak Type, Inflow and Provide Guidance for Targeted Treatment

2021 ◽  
pp. 152660282110379
Author(s):  
Marton Berczeli ◽  
Alan B. Lumsden ◽  
Su Min Chang ◽  
Charudatta S. Bavare ◽  
Ponraj Chinnadurai
Keyword(s):  
Image Guidance ◽  
Imaging Techniques ◽  
Targeted Treatment ◽  
Multiple Time ◽  
Type I ◽  
Ct Scanner ◽  
Time Resolved ◽  
Time To Peak ◽  
Time Resolved Imaging ◽  
Dynamic Time

Purpose: To illustrate dynamic, time-resolved CTA (d-CTA) imaging technique in characterizing aortic endoleak type/inflow using quantitative parameters and its value in providing image guidance for targeted treatment approach. Technique: Dedicated endoleak protocol involved acquiring multiple time-resolved contrast enhanced scans using third-generation CT scanner (Somatom Force®, Siemens Healthineers). Parameters such as scan field of view (FOV), kV, number/timing of scans were customized based on patient’s body-mass-index, timing bolus, and prior imaging findings. D-CTA image datasets were evaluated qualitatively and quantitatively using time-attenuation curves (TAC) analysis after motion correction using a dedicated software ( syngo.via®, Siemens). D-CTA findings from 4 illustrative cases demonstrating type I, type II (inferior mesenteric and lumbar artery inflow), and type III endoleak were illustrated. TAC analysis with time to peak parameter enabled better characterization of endoleak type and inflow. During endoleak intervention, target vessels from d-CTA images were electronically annotated and overlaid on fluoroscopy using 2D−3D image fusion to provide image guidance for targeted treatment. Conclusion: D-CTA imaging with TAC analysis characterizes aortic endoleak type and inflow, in addition to providing image guidance for targeted endoleak treatment. Such dynamic, time-resolved imaging techniques may provide further insights into understanding aortic endoleak that remains an Achilles heel for endovascular aortic aneurysm repair.

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