A5054862737- Optical Imaging and Spectroscopy Techniques
- Cardiac, Anesthesia and Surgical Outcomes
- Esophageal and GI Pathology
- Photoacoustic and Ultrasonic Imaging
- Surgical Simulation and Training
- Esophageal Cancer Research and Treatment
- Global Health and Surgery
- Metastasis and carcinoma case studies
- Spectroscopy Techniques in Biomedical and Chemical Research
- Lung Cancer Diagnosis and Treatment
- Optical Polarization and Ellipsometry
- Optical Coherence Tomography Applications
- Thyroid and Parathyroid Surgery
- COVID-19 and healthcare impacts
- Gastrointestinal disorders and treatments
- Colorectal Cancer Surgical Treatments
- Gastric Cancer Management and Outcomes
- Diverticular Disease and Complications
- Ultrasound Imaging and Elastography
- Medical Malpractice and Liability Issues
- Respiratory Support and Mechanisms
- Anatomy and Medical Technology
- Characterization and Applications of Magnetic Nanoparticles
- Patient Safety and Medication Errors
- Omental and Epiploic Conditions
St. Vincent's University Hospital
2021-2022
St. Columcille's Hospital
2022
Queen's Hospital
2017
Imperial College London
2012-2015
Lister Hospital
2011-2015
St Mary's Hospital
2013-2014
St. Mary's Hospital
2013-2014
Vardhman Mahavir Medical College & Safdarjung Hospital
2013
East and North Hertfordshire NHS Trust
2011
Intraoperative monitoring of tissue oxygen saturation (StO2 ) has potentially important applications in procedures such as organ transplantation or colorectal surgery, where successful reperfusion affects the viability and integrity repaired tissues. In this paper a liquid crystal tuneable filter-based multispectral imaging (MSI) laparoscope is described. Motion-induced image misalignments are reduced, using feature-based registration, before regression reflectance spectra to calculate...
Polarisation imaging has the potential to provide enhanced contrast based on variations in optical properties, such as scattering or birefringence, of tissue interest.Examining signal at different wavebands visible spectrum also allows interrogation depths and structures.A stereo endoscope been adapted allow snapshot acquisition orthogonal linear polarisation images generate difference images.These are acquired three narrow bands using a triple-bandpass filter pair colour cameras.The first...
Heat-induced tissue fusion is an important procedure in modern surgery and can greatly reduce trauma, complications, mortality during minimally invasive surgical blood vessel anastomosis, but it may also have further benefits if applied to other types such as small large intestine anastomoses. We present a tissue-fusion characterization technology using laser-induced fluorescence spectroscopy, which provides insight into constituent variations at the molecular level. In particular, increase...
Abstract Heat‐induced tissue fusion via radio‐frequency (RF) energy has gained wide acceptance clinically and here we present the first optical‐Raman‐spectroscopy study on samples in vitro . This provides direct insights into constituent structural changes molecular level, exposing spectroscopic evidence for loss of distinct collagen fibre rich layers as well denaturing restructuring crosslinks post RF fusion. These findings open door more advanced optical feedback‐control methods...
Intraoperative feedback on tissue function, such as blood volume and oxygenation would be useful to the surgeon in cases where current clinical practice relies subjective measures, identification of ischaemic bowel or viability during anastomosis formation. Also, surface profiling may used detect identify certain pathologies, well diagnosing aspects health gut motility. In this paper a dual modality laparoscopic system is presented that combines multispectral reflectance 3D imaging. White...
Cancerous and precancerous growths often exhibit changes in scattering, therefore depolarization, as well collagen breakdown, causing birefringent effects. Simple difference of linear polarization imaging is unable to represent anisotropic effects like birefringence, Mueller polarimetry time-consuming difficult implement clinically. This work presents a dual-polarization endoscope collect co- cross-polarized images for each two states, further incorporates narrow band detection increase...
A 61-year-old man attended an outpatient colorectal clinic for a chronic, non-specific abdominal pain, associated with rectal bleeding. He underwent number of investigations including CT pneumocolon, which revealed incidental finding 20 cm additional sigmoid colon. This case is interesting because tubular duplication extremely unusual condition, rarely diagnosed in adults; only few cases have been reported this condition the adult population. Our team chose to treat patient conservatively,...
Oxygen supply is an important predictor of the integrity and viability luminal structures after surgery. Multispectral imaging used to study haemodynamics during small bowel anastomosis arterio-venous fistula formation
Delivery of radiofrequency (RF) electrical energy is used during surgery to heat and seal tissue, such as vessels, allowing resection without blood loss. Recent work has suggested that this approach may be extended allow surgical attachment larger tissue segments for applications bowel anastomosis. In a large series porcine procedures bipolar RF was resect re-seal the small in vivo with commercial fusion device (Ligasure; Covidien PLC, USA). The then imaged multispectral imaging laparoscope...
Background: Despite being accepted as a standard day case procedure, rates for laparoscopic cholecystectomy (LC) remain low.Post-operative pain, nausea and vomiting continue to be important obstacles early discharge.Present study was undertaken assess the role of transversus abdominis plane (TAP) block an analgesic adjunct in improving procedure related outcomes patients undergoing (DCLC).Methods: Patients DCLC were prospectively randomised TAP no groups after informed consenting.Patients...