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Schmidt I, Nagengast WB, Robinson DJ. Characterizing factors influencing calibration and optical property determination in quantitative reflectance spectroscopy to improve standardization. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:074714. [PMID: 35393792 PMCID: PMC8988964 DOI: 10.1117/1.jbo.27.7.074714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 03/15/2022] [Indexed: 06/14/2023]
Abstract
SIGNIFICANCE The combination of reflectance and fluorescence spectroscopy allows the determination of tissue optical properties and the calculation of the intrinsic fluorescence in vivo. These parameters can discriminate between tissues and may allow the discrimination of malignant from benign tissue. While this approach has significant clinical potential, the lack of standardization and quality assessment prevents the upscaling of research. AIM Investigate which factors influence device calibration and tissue optical property determination. Improve system quality assessment and allow upscaling of the clinical research using multidiameter single fiber reflectance/singe fiber fluorescence spectroscopy. APPROACH Two studies, one phantom based on uniform calibrations and skin measurements and a clinical study including clinical calibrations. The first validates the effect of factors under identical conditions and the effect of calibration quality on the optical property determination of skin. The second shows the effect of different system configurations and the performance of the system and probe over an extended period. RESULTS Phantom calibrations showed stability over a period of 20 weeks except for a 16-week-old intralipid phantom which showed a significant difference (at least p = 0.0032) for all five probes evaluated. For clinical calibrations, only the fiber tree had a significant influence (probe 4: p < 0.000001 and probe 5: p = 0.00038) on the calibration quality. Interestingly, no degradation of probe performance was detected over a period of 21 months despite the exposure to stress during clinical measurements. Calibration quality affected μs' and the power law scattering exponent, but the degree of the influence was different per fiber. CONCLUSIONS Intralipid phantom quality and fiber tree performance are the main factors influencing the calibration quality. Probe and user performance did not show any effect, which makes the upscaling of research to multicenter trials easier. A high-quality assessment procedure should be implemented to track changes during clinical trials.
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Affiliation(s)
- Iris Schmidt
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, The Netherlands
| | - Wouter B. Nagengast
- University Medical Center Groningen, Department of Gastroenterology and Hepatology, Groningen, The Netherlands
| | - Dominic J. Robinson
- Erasmus Medical Center, Center for Optical Diagnostics and Therapy, Department of Otorhinolaryngology and Head and Neck Surgery, Rotterdam, The Netherlands
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Post AL, de Groof AJ, Zhang XU, Swager AF, Fockens KN, Pouw RE, Weusten BLAM, Faber DJ, de Bruin DM, Bergman JJGHM, van Leeuwen TG, Sterenborg HJCM, Curvers WL. Toward improved endoscopic surveillance with multidiameter single fiber reflectance spectroscopy in patients with Barrett's esophagus. JOURNAL OF BIOPHOTONICS 2021; 14:e202000351. [PMID: 33410602 DOI: 10.1002/jbio.202000351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 12/22/2020] [Accepted: 12/23/2020] [Indexed: 05/05/2023]
Abstract
Patients with Barrett's esophagus are at an increased risk to develop esophageal cancer and, therefore, undergo regular endoscopic surveillance. Early detection of neoplasia enables endoscopic treatment, which improves outcomes. However, early Barrett's neoplasia is easily missed during endoscopic surveillance. This study investigates multidiameter single fiber reflectance spectroscopy (MDSFR) to improve Barrett's surveillance. Based on the concept of field cancerization, it may be possible to identify the presence of a neoplastic lesion from measurements elsewhere in the esophagus or even the oral cavity. In this study, MDSFR measurements are performed on non-dysplastic Barrett's mucosa, squamous mucosa, oral mucosa, and the neoplastic lesion (if present). Based on logistic regression analysis on the scattering parameters measured by MDSFR, a classifier is developed that can predict the presence of neoplasia elsewhere in the Barrett's segment from measurements on the non-dysplastic Barrett's mucosa (sensitivity 91%, specificity 71%, AUC = 0.77). Classifiers obtained from logistic regression analysis for the squamous and oral mucosa do not result in an AUC significantly different from 0.5.
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Affiliation(s)
- Anouk L Post
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Surgery, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Albert J de Groof
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Xu U Zhang
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Anne-Fré Swager
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Kiki N Fockens
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Roos E Pouw
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Bas L A M Weusten
- Department of Gastroenterology and Hepatology, St. Antonius Hospital, Nieuwegein, The Netherlands
- Department of Gastroenterology and Hepatology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Dirk J Faber
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Daniel M de Bruin
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jacques J G H M Bergman
- Department of Gastroenterology and Hepatology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Ton G van Leeuwen
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Henricus J C M Sterenborg
- Department of Biomedical Engineering and Physics, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Department of Surgery, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Wouter L Curvers
- Department of Gastroenterology and Hepatology, Catharina Hospital, Eindhoven, The Netherlands
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Single-Fiber Reflectance Spectroscopy of Isotropic-Scattering Medium: An Analytic Perspective to the Ratio-of-Remission in Steady-State Measurements. PHOTONICS 2014. [DOI: 10.3390/photonics1040565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Keereweer S, Van Driel PBAA, Robinson DJ, Lowik CWGM. Shifting focus in optical image-guided cancer therapy. Mol Imaging Biol 2014; 16:1-9. [PMID: 24037176 DOI: 10.1007/s11307-013-0688-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cancer patients could benefit from a surgical procedure that helps the surgeon to determine adequate tumor resection margins. Systemic injection of tumor-specific fluorescence agents with subsequent intraoperative optical imaging can guide the surgeon in this process. However, tumor heterogeneity hampers tumor-specific targeting. In addition, determination of adequate resection margins can be very challenging due to invasive tumor strands that are difficult to resolve and because of the confounding effect of variations in tissue optical properties in the surgical margin. We provide an overview of the "classic approach" of imaging tumor-specific targets or tumor-associated pathophysiological processes, and explain the limitations of these targeting strategies. It is proposed that problems of tumor heterogeneity can theoretically be circumvented by shifting focus of tumor targeting towards the follicle-stimulating hormone receptor (FSHR). Furthermore, we discuss why objective determination of resection margins is required to improve resection of the invasive strands, a goal that may be achieved by targeting the FSHR. When invasive strands would nevertheless extend beyond such a standardized resection margin, we suggest that adjuvant photodynamic therapy would be a very suitable therapeutic regimen. Finally, we describe how point optical spectroscopy can be used to scrutinize suspect tissue that is difficult to differentiate from normal tissue by measuring the local tissue optical properties to recover a local intrinsic fluorescence measurement.
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Affiliation(s)
- Stijn Keereweer
- Department of Molecular Imaging, Leiden University Medical Center, Leiden, The Netherlands,
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van Leeuwen–van Zaane F, Gamm UA, van Driel PBAA, Snoeks TJA, de Bruijn HS, van der Ploeg–van den Heuvel A, Mol IM, Löwik CWGM, Sterenborg HJCM, Amelink A, Robinson DJ. In vivo quantification of the scattering properties of tissue using multi-diameter single fiber reflectance spectroscopy. BIOMEDICAL OPTICS EXPRESS 2013; 4:696-708. [PMID: 23667786 PMCID: PMC3646597 DOI: 10.1364/boe.4.000696] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 02/20/2013] [Accepted: 02/23/2013] [Indexed: 05/19/2023]
Abstract
Multi diameter single fiber reflectance (MDSFR) spectroscopy is a non-invasive optical technique based on using multiple fibers of different diameters to determine both the reduced scattering coefficient (μs') and a parameter γ that is related to the angular distribution of scattering, where γ = (1-g2)/(1-g1) and g1 and g2 the first and second moment of the phase function, respectively. Here we present the first in vivo MDSFR measurements of μs'(λ) and γ(λ) and their wavelength dependence. MDSFR is performed on nineteen mice in four tissue types including skin, liver, normal tongue and in an orthotopic oral squamous cell carcinoma. The wavelength-dependent slope of μs'(λ) (scattering power) is significantly higher for tongue and skin than for oral cancer and liver. The reduced scattering coefficient at 800 nm of oral cancer is significantly higher than of normal tongue and liver. Gamma generally increases with increasing wavelength; for tumor it increases monotonically with wavelength, while for skin, liver and tongue γ(λ) reaches a plateau or even decreases for longer wavelengths. The mean γ(λ) in the wavelength range 400-850 nm is highest for liver (1.87 ± 0.07) and lowest for skin (1.37 ± 0.14). Gamma of tumor and normal tongue falls in between these values where tumor exhibits a higher average γ(λ) (1.72 ± 0.09) than normal tongue (1.58 ± 0.07). This study shows the potential of using light scattering spectroscopy to optically characterize tissue in vivo.
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Affiliation(s)
- F. van Leeuwen–van Zaane
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | - U. A. Gamm
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | | | - T. J. A. Snoeks
- Department of Radiology, Leiden University Medical Centre,
Leiden, The Netherlands
| | - H. S. de Bruijn
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | - A. van der Ploeg–van den Heuvel
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | - I. M. Mol
- Department of Radiology, Leiden University Medical Centre,
Leiden, The Netherlands
| | - C. W. G. M. Löwik
- Department of Radiology, Leiden University Medical Centre,
Leiden, The Netherlands
| | - H. J. C. M. Sterenborg
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | - A. Amelink
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
| | - D. J. Robinson
- Department of Radiation Oncology, Center for Optical Diagnostics
and Therapy, Postgraduate School Molecular Medicine, Erasmus MC, P.O. box 2040, 3000 CA
Rotterdam, The Netherlands
- Department of Dermatology, Erasmus MC Rotterdam, The
Netherlands
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