Time-resolved multispectral fluorescence imaging system based on compressed sensing (Conference Presentation)

2020 ◽  
Author(s):  
Cosimo D'Andrea ◽  
Andrea Farina ◽  
Giulia Acconcia ◽  
Ivan Labanca ◽  
Laura Di Sieno ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Fluorescence Imaging ◽  
Imaging System ◽  
Time Resolved ◽  
Fluorescence Imaging System ◽  
Multispectral Fluorescence Imaging

Steady-state multispectral fluorescence imaging system for plant leaves

2001 ◽  
Vol 40 (1) ◽  
pp. 157 ◽  
Author(s):  
Moon S. Kim ◽  
James E. McMurtrey ◽  
Charles L. Mulchi ◽  
Craig S. T. Daughtry ◽  
Emmett W. Chappelle ◽  
...  
Keyword(s):  
Steady State ◽  
Fluorescence Imaging ◽  
Imaging System ◽  
Plant Leaves ◽  
Fluorescence Imaging System ◽  
Multispectral Fluorescence Imaging

Hyperspectral, Time-Resolved, Fluorescence Imaging System for Large Sample Sizes: Part II. Detection of Fecal Contamination on Spinach Leaves

2018 ◽  
Vol 61 (2) ◽  
pp. 391-398 ◽  
Author(s):  
Kevin Tewey ◽  
Alan M. Lefcourt ◽  
Uri Tasch ◽  
Patrick Shilts ◽  
Moon S. Kim
Keyword(s):  
Fluorescence Imaging ◽  
Imaging System ◽  
Fecal Contamination ◽  
Fluorescence Decay ◽  
Decay Rates ◽  
Time Resolved ◽  
Surface Areas ◽  
Fluorescence Imaging System ◽  
Time Resolved Imaging ◽  
Spinach Leaves

Abstract. To reduce the risk of foodborne illnesses resulting from fecal contamination in produce fields, a hyperspectral, line-scan, laser-induced fluorescence imaging system was developed with the goal of eventually incorporating the imaging system into a pre-harvest detection apparatus for fecal contamination. The imaging system includes an intensified, gated camera, a spectral adapter, a 355 nm pulsed laser, and laser expansion optics that produce a line-illumination profile. To validate and test the system, spinach leaves inoculated with dilutions of bovine fecal material were imaged repeatedly using a predefined set of imaging parameters. These images were used to evaluate methods for detecting fecal contamination. Methods investigated included ratio, edge, threshold, and slope detection. Differences in the magnitude of averaged intensities for the spectral range of 450-500 nm for regions within fecal contamination sites and in nearby uncontaminated surface areas suggested that the 450-500 nm waveband would be a good region for use in detection tests. Validation tests that used threshold or slope detection, the 450-500 nm waveband, and that took advantage of the slower fluorescence decay rates of fecal contamination sites relative to uncontaminated surface areas showed almost 100% detection of 1:2, 1:10, and 1:100 dilution sites and over 70% detection of 1:200 dilution sites with essentially zero false positives. These results suggest that the imaging system has potential for development of a commercially viable apparatus for pre-harvest detection of fecal contamination in produce fields and for detection of fecal contamination of leafy green vegetables in general. Keywords: Fecal detection, Fluorescence imaging, Food safety, Machine vision, Spinach, Time-resolved imaging.

Clipping of an anterior spinal artery aneurysm using an endoscopic fluorescence imaging system for craniocervical junction epidural arteriovenous fistula: technical note

2019 ◽  
Vol 31 (2) ◽  
pp. 279-284 ◽  
Author(s):  
Ahmed Mansour ◽  
Toshiki Endo ◽  
Tomoo Inoue ◽  
Kenichi Sato ◽  
Hidenori Endo ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Arteriovenous Fistula ◽  
Fluorescence Imaging ◽  
Imaging System ◽  
Artery Aneurysm ◽  
Craniocervical Junction ◽  
Anterior Spinal Artery ◽  
Posterolateral Approach ◽  
Fluorescence Imaging System ◽  
Ventral Spinal Cord

The authors report the case of a 78-year-old man with a craniocervical junction epidural arteriovenous fistula who presented with subarachnoid hemorrhage from a ruptured anterior spinal artery (ASA) aneurysm. Because endovascular embolization was difficult, a posterolateral approach was chosen and a novel endoscopic fluorescence imaging system was utilized to clip the aneurysm. The fluorescence imaging system provided clear and magnified views of the ventral spinal cord simultaneously with the endoscope-integrated indocyanine green videoangiography, which helped safely obliterate the ASA aneurysm. With the aid of this novel imaging system, surgeons can appreciate and manipulate complex vascular pathologies of the ventral spinal cord through a posterolateral approach, even when the lesion is closely related to the ASA.

scholarly journals 3D Tissue Reconstruction by using Deep Tissue Fluorescence Imaging System and FLIM

2014 ◽  
Vol 106 (2) ◽  
pp. 400a
Author(s):  
Sohail Jahid ◽  
Alexander S. Dvornikov ◽  
Michelle Digman ◽  
Enrico Gratton
Keyword(s):  
Fluorescence Imaging ◽  
Imaging System ◽  
Deep Tissue ◽  
Tissue Reconstruction ◽  
Fluorescence Imaging System ◽  
Tissue Fluorescence
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