scholarly journals Early detection of slight bruises in apples by cost-efficient near-infrared imaging

2022 ◽  
Vol 12 (1) ◽  
pp. 349
Author(s):  
Chanh-Nghiem Nguyen ◽  
Van-Linh Lam ◽  
Phuc-Hau Le ◽  
Huy-Thanh Ho ◽  
Chi-Ngon Nguyen
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Low Cost ◽  
Nir Spectroscopy ◽  
Global Market ◽  
Cost System ◽  
Nir Imaging ◽  
Thin Skin ◽  
Cost Efficient ◽  
Apple Fruits

Near-infrared (NIR) spectroscopy has been widely reported for its useful applications in assessing internal fruit qualities. Motivated by apple consumption in the global market, this study aims to evaluate the possibility of applying NIR imaging to detect slight bruises in apple fruits. A simple optical setup was designed, and low-cost system components were used to promote the future development of practical and cost-efficient devices. To evaluate the effectiveness of the proposed approach, slight bruises were created by a mild impact with a comparably low impact energy of only 0.081 Joules. Experimental results showed that 100% of bruises in Jazz and Gala apples were accurately detected immediately after bruising and within 3 hours of storage. Thus, it is promising to develop customer devices to detect slight bruises for not only apple fruits but also other fruits with soft and thin skin at their early damage stages.

scholarly journals Feasibility of Using VIS/NIR Spectroscopy and Multivariate Analysis for Pesticide Residue Detection in Tomatoes

Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 196
Author(s):  
Araz Soltani Nazarloo ◽  
Vali Rasooli Sharabiani ◽  
Yousef Abbaspour Gilandeh ◽  
Ebrahim Taghinezhad ◽  
Mariusz Szymanek ◽  
...  
Keyword(s):  
Near Infrared ◽  
Cross Validation ◽  
Low Cost ◽  
Moving Average ◽  
Nir Spectroscopy ◽  
Control Treatment ◽  
Residue Detection ◽  
Non Destructive ◽  
Reflective Spectroscopy

The purpose of this work was to investigate the detection of the pesticide residual (profenofos) in tomatoes by using visible/near-infrared spectroscopy. Therefore, the experiments were performed on 180 tomato samples with different percentages of profenofos pesticide (higher and lower values than the maximum residual limit (MRL)) as compared to the control (no pesticide). VIS/near infrared (NIR) spectral data from pesticide solution and non-pesticide tomato samples (used as control treatment) impregnated with different concentrations of pesticide in the range of 400 to 1050 nm were recorded by a spectrometer. For classification of tomatoes with pesticide content at lower and higher levels of MRL as healthy and unhealthy samples, we used different spectral pre-processing methods with partial least squares discriminant analysis (PLS-DA) models. The Smoothing Moving Average pre-processing method with the standard error of cross validation (SECV) = 4.2767 was selected as the best model for this study. In addition, in the calibration and prediction sets, the percentages of total correctly classified samples were 90 and 91.66%, respectively. Therefore, it can be concluded that reflective spectroscopy (VIS/NIR) can be used as a non-destructive, low-cost, and rapid technique to control the health of tomatoes impregnated with profenofos pesticide.

scholarly journals Detection of early neoplasia in Barrett’s esophagus using lectin-based near-infrared imaging: an ex vivo study on human tissue

Endoscopy ◽  
2018 ◽  
Vol 50 (06) ◽  
pp. 618-625 ◽  
Author(s):  
André Neves ◽  
Massimiliano Di Pietro ◽  
Maria O’Donovan ◽  
Dale Waterhouse ◽  
Sarah Bohndiek ◽  
...  
Keyword(s):  
Barrett’S Esophagus ◽  
Barrett's Esophagus ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Ex Vivo ◽  
Sampling Error ◽  
Nir Light ◽  
Nir Imaging ◽  
Nir Fluorescence ◽  
Nir Dye

Abstract Background and study aims Endoscopic surveillance for Barrett’s esophagus (BE) is limited by long procedure times and sampling error. Near-infrared (NIR) fluorescence imaging minimizes tissue autofluorescence and optical scattering. We assessed the feasibility of a topically applied NIR dye-labeled lectin for the detection of early neoplasia in BE in an ex vivo setting. Methods Consecutive patients undergoing endoscopic mucosal resection (EMR) for BE-related early neoplasia were recruited. Freshly collected EMR specimens were sprayed at the bedside with fluorescent lectin and then imaged. Punch biopsies were collected from each EMR under NIR light guidance. We compared the fluorescence intensity from dysplastic and nondysplastic areas within EMRs and from punch biopsies with different histological grades. Results 29 EMR specimens were included from 17 patients. A significantly lower fluorescence was found for dysplastic regions across whole EMR specimens (P < 0.001). We found a 41 % reduction in the fluorescence of dysplastic compared to nondysplastic punch biopsies (P < 0.001), with a sensitivity and specificity for dysplasia detection of 80 % and 82.9 %, respectively. Conclusion Lectin-based NIR imaging can differentiate dysplastic from nondysplastic Barrett’s mucosa ex vivo.

A Low-Cost Implantable Near-Infrared Imaging System of Spinal Cord Activity in the Cat

2010 ◽  
Vol 4 (5) ◽  
pp. 329-335 ◽  
Author(s):  
Alexandre Goguin ◽  
Frédéric Lesage ◽  
Hugues Leblond ◽  
Mélanie Pelegrini-Issac ◽  
Serge Rossignol ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Imaging System ◽  
Low Cost ◽  
Near Infrared Imaging ◽  
Infrared Imaging System

scholarly journals Prediction of Texture of Raw Poultry Meat by Visible and Near–Infrared Reflectance Spetroscopy

2013 ◽  
Vol 64 (5) ◽  
Author(s):  
Herlina Abdul Rahim ◽  
Rashidah Ghazali ◽  
Shafishuhaza Sahlan ◽  
Mashitah Shikh Maidin
Keyword(s):  
Prediction Accuracy ◽  
Broiler Chickens ◽  
Near Infrared ◽  
Low Cost ◽  
Nir Spectroscopy ◽  
Food Composition ◽  
Poultry Meat ◽  
Near Infrared Reflectance ◽  
Village Chickens ◽  
Raw Poultry

Near-infrared (NIR) spectroscopy is a non-destructive, low cost and fast measurement technique that is required to improve the meat texture quality prediction. In this research, visible/NIR spectroscopy has been used for the prediction of raw chicken meat texture from different types of chickens by referring to the reference data obtained from destructive measurement using a Volodkevich Bite Jaws texture analyser. The Partial Least Squares analysis shows that the prediction accuracy is higher for the Az-Zain village organic chickens (85–95%) than for village chickens (42–68%) and broiler chickens (42–44%). The high prediction accuracy and low absorbance spectra of Az-Zain village organic chickens compared to broiler and village chickens could be correlated with the food composition of the chicken meal.

scholarly journals Near-infrared imaging of brain tumors using the Tumor Paint BLZ-100 to achieve near-complete resection of brain tumors

2014 ◽  
Vol 36 (2) ◽  
pp. E1 ◽  
Author(s):  
Pramod V. Butte ◽  
Adam Mamelak ◽  
Julia Parrish-Novak ◽  
Doniel Drazin ◽  
Faris Shweikeh ◽  
...  
Keyword(s):  
Brain Tumors ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Imaging System ◽  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
Complete Resection ◽  
Human Glioma ◽  
Nir Imaging ◽  
The Brain

Object The intraoperative clear delineation between brain tumor and normal tissue in real time is required to ensure near-complete resection without damaging the nearby eloquent brain. Tumor Paint BLZ-100, a tumor ligand chlorotoxin (CTX) conjugated to indocyanine green (ICG), has shown potential to be a targeted contrast agent. There are many infrared imaging systems in use, but they are not optimized to the low concentration and amount of ICG. The authors present a novel proof-of-concept near-infrared (NIR) imaging system using a standard charge-coupled device (CCD) camera for visualizing low levels of ICG attached to the tumors. This system is small, inexpensive, and sensitive. The imaging system uses a narrow-band laser at 785 nm and a notch filter in front of the sensor at the band. The camera is a 2-CCD camera, which uses identical CCDs for both visible and NIR light. Methods The NIR system is tested with serial dilution of BLZ-100 from 1 μM to 50 pM in 5% Intralipid solution while the excitation energy is varied from 5 to 40 mW/cm2. The analog gain of the CCD was changed from 0, 6, and 12 dB to determine the signal-to-noise ratio. In addition to the Intralipid solution, BLZ-100 was injected 48 hours before euthanizing the mice that were implanted with the human glioma cell line. The brain was removed and imaged using the NIR imaging system. Results The authors' results show that the NIR imaging system using a standard CCD is able to visualize the ICG down to 50 nM of concentration with a high signal-to-noise ratio. The preliminary experiment on human glioma implanted in mouse brains demonstrated that BLZ-100 has a high affinity for glioma compared with normal brain tissue. Additionally, the results show that NIR excitation is able to penetrate deeply and has a potential to visualize metastatic lesions that are separate from the main tumor. Conclusions The authors have seen that BLZ-100 has a very high affinity toward human gliomas. They also describe a small, cost-effective, and sensitive NIR system for visualizing brain tumors tagged using BLZ-100. The authors hope that the use of BLZ-100 along with NIR imaging will be useful to delineate the brain tumors in real time and assist surgeons in near-complete tumor removal to increase survival and reduce neurological deficits.

Cancer-targeted near infrared imaging using rare earth ion-doped ceramic nanoparticles

2015 ◽  
Vol 3 (1) ◽  
pp. 59-64 ◽  
Author(s):  
Tamotsu Zako ◽  
Miya Yoshimoto ◽  
Hiroshi Hyodo ◽  
Hidehiro Kishimoto ◽  
Masaaki Ito ◽  
...  
Keyword(s):  
Rare Earth ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Human Colon ◽  
Oxide Nanoparticles ◽  
Rare Earth Ion ◽  
Human Colon Cancer ◽  
Nir Imaging ◽  
Cancer Tissues ◽  
Yttrium Oxide Nanoparticles

Cancer-specific NIR–NIR imaging was demonstrated using streptavidin-functionalized rare earth ion-doped yttrium oxide nanoparticles and biotinylated antibodies on cancer cells and human colon cancer tissues.

A targeted agent with intercalation structure for cancer near-infrared imaging and photothermal therapy

RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16608-16614 ◽  
Author(s):  
Chunyang Li ◽  
Ruizheng Liang ◽  
Rui Tian ◽  
Shanyue Guan ◽  
Dongpeng Yan ◽  
...  
Keyword(s):  
Folic Acid ◽  
Indocyanine Green ◽  
Layered Double Hydroxide ◽  
Photothermal Therapy ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Near Infrared Imaging ◽  
Nir Imaging ◽  
Targeted Agent ◽  
Double Hydroxide

A new targeted photothermal agent is synthesized by co-intercalation of indocyanine green (ICG) and folic acid (FA) into the layered double hydroxide (LDH), which can be potentially used in cancer NIR imaging and photothermal therapy (PTT) field.

Near infrared imaging-guided photodynamic therapy under an extremely low energy of light by galactose targeted amphiphilic polypeptide micelle encapsulating BODIPY-Br2

2016 ◽  
Vol 4 (11) ◽  
pp. 1638-1645 ◽  
Author(s):  
Le Liu ◽  
Zheng Ruan ◽  
Tuanwei Li ◽  
Pan Yuan ◽  
Lifeng Yan
Keyword(s):  
Photodynamic Therapy ◽  
Near Infrared ◽  
Infrared Imaging ◽  
Polymeric Micelle ◽  
Low Energy ◽  
Near Infrared Imaging ◽  
Nir Imaging

Galactose targeted polymeric micelle encapsulating BODIPY-Br2 has been prepared which showed NIR imaging-guided photodynamic therapy under an extremely low energy of light.

Novel Approach in the Evaluation of Flap Failure Using near Infrared Spectroscopy and Imaging

2000 ◽  
Vol 8 (2) ◽  
pp. 68-72 ◽  
Author(s):  
Badr M Abdulrauf ◽  
Miroslaw F Stranc ◽  
Michael G Sowa ◽  
Shelley L Germscheid ◽  
Henry H Mantsch
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Near Infrared ◽  
Nir Spectroscopy ◽  
Well Being ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Nir Imaging ◽  
Imaging Results ◽  
Flap Elevation

Methods of tissue viability assessment should be classified into those that measure blood flow and those that monitor tissue metabolism. The problem with measuring blood flow is that it can be misleading due to the phenomenon of arteriovenous shunting. Near infrared (NIR) spectroscopy is capable of identifying certain molecules in the tissues. In this study, using the reverse McFarlane rat skin flap as a model, oxygen delivery to the tissue along the flap was demonstrated in the form of a spectrum. This was achieved by using the differential absorption of oxy- and deoxyhemoglobin between wavelengths of 650 nm and 900 nm. NIR imaging works on a similar principle, but an oxygen saturation image is obtained, with the darkest area indicating the most deoxygenated area of the flap and vice versa. There were two types of studies done. In the chronic study (n=10), NIR spectroscopy was done on the intact skin preoperatively for three days and then after elevation of the flap at various sites for three days. Preoperative measurements showed excellent reproducibility, and postoperative measurements showed progressive deoxygenation toward the distal aspect of the flap. NIR imaging at 1 h after flap elevation showed a zone of demarcation that corresponded with that noted clinically at 72 h. In the acute study (n=3), NIR spectroscopy, imaging and laser Doppler flowmetry were acquired before, immediately following and 1 h after raising the flap, and then measurements were taken after applying a vascular clamp across the base of the flap; reperfusion was evaluated after clamp release. Spectroscopy immediately following flap elevation indicated deoxygenation of the most distant part of the flap. Clamping the base of the flap caused deoxygenation of the whole flap; this was immediately evident on both spectroscopy and imaging. These changes recovered after releasing the clamp in the areas that were expected to survive. Laser Doppler flowmetry results generally correlated well with the NIR spectroscopy and imaging results. However, the method was very sensitive to fine movements during monitoring. The main advantage of NIR monitoring is that it looks directly at oxygen consumption rather than measuring blood flow. In addition, the NIR imaging gives a global picture of the eventual fate of the flap. These properties make these devices much more practical when the flap's well-being is concerned.

scholarly journals An effective method for detecting dorsal hand veins utilising near-infrared imaging technology

2021 ◽  
Vol 63 (2) ◽  
pp. 32-38
Author(s):  
Hai Thanh Le ◽  
◽  
Hien Thi Thu Pham ◽  
Keyword(s):  
Near Infrared ◽  
Infrared Imaging ◽  
Blood Collection ◽  
Imaging Device ◽  
Non Invasive ◽  
Nir Imaging ◽  
Dorsal Hand ◽  
Dorsal Hand Vein ◽  
High Level ◽  
Level Process

Intravenous access for blood collection and other related therapies is one of the most frequently practiced procedures in the modern medical system. The procedure requires complex training and experience, as it might cause dangerous nerve damage and subcutaneous bleeding. This paper proposes a dorsal hand vein detection method utilising the near-infrared (NIR) imaging device to segment and visualise the subcutaneous vein patterns on the skin directly. Applying NIR light has received substantial attention because of its non-invasive and revealing substantially more information than the visible one. The proposed method is divided into the low- and high-level processes. The captured image is smoothed and enhanced to make the vein patterns clearer in the low-level process. The pre-processed image is then segmented step by step to extract the vein features and eliminate the pseudo-vein regions precisely. Lastly, the detected veins are thinned to reduce the thickness and projected back onto the acquired image in the high-level process. The proposed method performs effectively in detecting the clear dorsal hand veins through the experiment with a processing time of 0.61s for the high-resolution image.

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