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Optical coherence tomography of small intestine allograft biopsies using a handheld surgical probe
- Source :
- Journal of Biomedical Optics
- Publication Year :
- 2021
- Publisher :
- SPIE-Intl Soc Optical Eng, 2021.
-
Abstract
- Significance: The current gold standard for monitoring small intestinal transplant (IT) rejection is endoscopic visual assessment and biopsy of suspicious lesions; however, these lesions are only superficially visualized by endoscopy. Invasive biopsies provide a coarse sampling of tissue health without depicting the true presence and extent of any pathology. Optical coherence tomography (OCT) presents a potential alternative approach with significant advantages over traditional white-light endoscopy. Aim: The aim of our investigation was to evaluate OCT performance in distinguishing clinically relevant morphological features associated with IT graft failure. Approach: OCT was applied to evaluate the small bowel tissues of two rhesus macaques that had undergone IT of the ileum. The traditional assessment from routine histological observation was compared with OCT captured using a handheld surgical probe during the days post-transplant and subsequently was compared with histophaology. Results: The reported OCT system was capable of identifying major biological landmarks in healthy intestinal tissue. Following IT, one nonhuman primate (NHP) model suffered a severe graft ischemia, and the second NHP graft failed due to acute cellular rejection. OCT images show visual evidence of correspondence with histological signs of IT rejection. Conclusions: Results suggest that OCT imaging has significant potential to reveal morphological changes associated with IT rejection and to improve patient outcomes overall.
- Subjects :
- Paper
medicine.medical_specialty
genetic structures
diagnostic imaging
Biopsy
Biomedical Engineering
gastroenterology
imaging systems
Imaging
Biomaterials
Optical coherence tomography
Surgical probe
Medical imaging
Animals
Medicine
Sampling (medicine)
optical coherence tomography
medicine.diagnostic_test
business.industry
Endoscopy
Gold standard (test)
Allografts
Macaca mulatta
eye diseases
Atomic and Molecular Physics, and Optics
Small intestine
Electronic, Optical and Magnetic Materials
medicine.anatomical_structure
sense organs
Radiology
business
Tomography, Optical Coherence
Subjects
Details
- ISSN :
- 10833668
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Journal of Biomedical Optics
- Accession number :
- edsair.doi.dedup.....2ae2f992f6785a16bbe51e1ec9b7f6cc