Near-infrared bone densitometry: A feasibility study on distal radius measurement

2018 ◽  
Vol 11 (7) ◽  
pp. e201700342 ◽  
Author(s):  
Chun Chung ◽  
Yu-Pin Chen ◽  
Tsai-Hsueh Leu ◽  
Chia-Wei Sun
Keyword(s):  
Distal Radius ◽  
Feasibility Study ◽  
Bone Densitometry ◽  
Near Infrared

scholarly journals P11: NEAR INFRARED FLUORESCENT CHOLANGIOGRAPHY IN LAPAROSCOPIC CHOLECYSTECTOMY: A SINGLE CENTRE FEASIBILITY STUDY. THE OPTIMUM DOSING REGIME, LIMITATIONS AND WHERE NEXT?

2021 ◽  
Vol 108 (Supplement_1) ◽  
Author(s):  
G Armstrong ◽  
G Toogood ◽  
DG Jayne ◽  
AM Smith
Keyword(s):  
Laparoscopic Cholecystectomy ◽  
Bile Duct ◽  
Indocyanine Green ◽  
Feasibility Study ◽  
Near Infrared ◽  
Intravenous Dose ◽  
Structure Identification ◽  
Dosing Regimen ◽  
Single Centre ◽  
Fluorescent Cholangiography

Abstract Introduction This study explored near-infrared fluorescent cholangiography (NIRFC) with Indocyanine Green (ICG) during laparoscopic cholecystectomy (LC) surgery in a tertiary referral hepatobiliary unit. ICG binds to albumin and is excreted in bile. NIRFC utilises the fluorescent and excretory properties of ICG to provide dynamic extrahepatic bile duct mapping during LC. Method Non-randomised single centre feasibility study. Twenty-two participants were sequentially allocated to four dosing subgroups prior to NIRFC assisted LC. Each received a single intravenous dose of ICG prior to LC with the Stryker Novadaq NIR laparoscope. The biliary anatomy was assessed with NIRFC at three time-points, detection was compared to radiological cholangiogram where available and surgeon satisfaction was assessed. Result Eight participants received 2.5mg ICG 20-40min before surgery, four 0.25mg/kg 20-40min, five 90min – 180min and five 12 – 36 hour pre-operatively. Average age 50 years (S.D±15), BMI 27.5m2 (S.D±3.6), 6/22 were acute LC procedures. The prolonged dosing interval produced increased extrahepatic biliary structure identification (p = 0.016), reduced noise to signal ratio and was consistently preferred by the operating surgeon. NIRFC was inferior to radiological cholangiogram (n = 10) (p = 0.014) for bile duct mapping. We observed iatrogenic bile spillage saturating the field and obscuring structure differentiation and peri-hilar inflammation impeding fluorescent detection in acute LC. Conclusion The dosing regimen 0.25mg/kg ICG 12 to 36 hours prior to surgery provides optimum NIRFC structure visualisation. Fluorescent tissue penetrance is limited in acute peri-hilar inflammation. More research in to the efficiency of NIRFC in emergency LC is required. Take-home message An intravenous dose of 0.25mg/kg of Indocyanine Green 12 to 36 hours before surgery is the optimum dosing regimen for increased extra-hepatic bile duct structures with near infrared fluorescent cholangiography. The role of NIRFC in acute laparoscopic cholecystectomy surgery remains ill-defined.

Geographical Classification of Honey Samples by Near-Infrared Spectroscopy: A Feasibility Study

2007 ◽  
Vol 55 (22) ◽  
pp. 9128-9134 ◽  
Author(s):  
Tony Woodcock ◽  
Gerard Downey ◽  
J. Daniel Kelly ◽  
Colm O’Donnell
Keyword(s):  
Infrared Spectroscopy ◽  
Feasibility Study ◽  
Near Infrared Spectroscopy ◽  
Near Infrared

Indocyanine-green-loaded microbubbles for localization of sentinel lymph node using near-infrared fluorescence/ultrasound imaging: a feasibility study

RSC Advances ◽  
2016 ◽  
Vol 6 (56) ◽  
pp. 50513-50520 ◽  
Author(s):  
Long Wang ◽  
Yihe Hu ◽  
Qinghai Peng ◽  
Jiawei Zhou ◽  
Qichang Zhou ◽  
...  
Keyword(s):  
Lymph Node ◽  
Sentinel Lymph Node ◽  
Indocyanine Green ◽  
Radiation Exposure ◽  
Ultrasound Imaging ◽  
Feasibility Study ◽  
Cancer Metastasis ◽  
Near Infrared ◽  
False Negative ◽  
Near Infrared Fluorescence

Current strategies for sentinel lymph node (SLN) biopsy to detect cancer metastasis have some limitations such as the associated radiation exposure and high false-negative rates due to dye particles through the true SLNs to contiguous LNs.

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