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Fluorescence guided surgery and tracer-dose, fact or fiction?
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- Author(s): KleinJan GH;KleinJan GH;KleinJan GH; Bunschoten A; Bunschoten A; van den Berg NS; van den Berg NS; van den Berg NS; Olmos RA; Olmos RA; Olmos RA; Klop WM; Klop WM; Horenblas S; Horenblas S; van der Poel HG; van der Poel HG; Wester HJ; Wester HJ; van Leeuwen FW; van Leeuwen FW; van Leeuwen FW; van Leeuwen FW
- Source:
European journal of nuclear medicine and molecular imaging [Eur J Nucl Med Mol Imaging] 2016 Sep; Vol. 43 (10), pp. 1857-67. Date of Electronic Publication: 2016 Mar 28.- Publication Type:
Journal Article- Language:
English - Source:
- Additional Information
- Source: Publisher: Springer-Verlag Berlin Country of Publication: Germany NLM ID: 101140988 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1619-7089 (Electronic) Linking ISSN: 16197070 NLM ISO Abbreviation: Eur J Nucl Med Mol Imaging Subsets: MEDLINE
- Publication Information: Original Publication: Berlin : Springer-Verlag Berlin, 2002-
- Subject Terms: Neoplasms/*diagnostic imaging ; Neoplasms/*surgery ; Optical Imaging/*methods ; Sentinel Lymph Node/*diagnostic imaging ; Surgery, Computer-Assisted/*methods ; Technetium Tc 99m Aggregated Albumin/*pharmacokinetics; Humans ; Neoplasms/metabolism ; Radiopharmaceuticals/pharmacokinetics ; Reproducibility of Results ; Sensitivity and Specificity ; Sentinel Lymph Node/metabolism ; Sentinel Lymph Node/surgery
- Abstract: Introduction: Fluorescence guidance is an upcoming methodology to improve surgical accuracy. Challenging herein is the identification of the minimum dose at which the tracer can be detected with a clinical-grade fluorescence camera. Using a hybrid tracer such as indocyanine green (ICG)-(99m)Tc-nanocolloid, it has become possible to determine the accumulation of tracer and correlate this to intraoperative fluorescence-based identification rates. In the current study, we determined the lower detection limit of tracer at which intraoperative fluorescence guidance was still feasible.
Methods: Size exclusion chromatography (SEC) provided a laboratory set-up to analyze the chemical content and to simulate the migratory behavior of ICG-nanocolloid in tissue. Tracer accumulation and intraoperative fluorescence detection findings were derived from a retrospective analysis of 20 head-and-neck melanoma patients, 40 penile and 20 prostate cancer patients scheduled for sentinel node (SN) biopsy using ICG-(99m)Tc-nanocolloid. In these patients, following tracer injection, single photon emission computed tomography fused with computed tomography (SPECT/CT) was used to identify the SN(s). The percentage injected dose (% ID), the amount of ICG (in nmol), and the concentration of ICG in the SNs (in μM) was assessed for SNs detected on SPECT/CT and correlated with the intraoperative fluorescence imaging findings.
Results: SEC determined that in the hybrid tracer formulation, 41 % (standard deviation: 12 %) of ICG was present in nanocolloid-bound form. In the SNs detected using fluorescence guidance a median of 0.88 % ID was present, compared to a median of 0.25 % ID in the non-fluorescent SNs (p-value < 0.001). The % ID values could be correlated to the amount ICG in a SN (range: 0.003-10.8 nmol) and the concentration of ICG in a SN (range: 0.006-64.6 μM).
Discussion: The ability to provide intraoperative fluorescence guidance is dependent on the amount and concentration of the fluorescent dye accumulated in the lesion(s) of interest. Our findings indicate that intraoperative fluorescence detection with ICG is possible above a μM concentration. - References: Eur Urol. 2014 Jun;65(6):1162-8. (PMID: 24289911)
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J Nucl Med. 2003 Apr;44(4):570-82. (PMID: 12679402) - Contributed Indexing: Keywords: Fluorescence-guided surgery; Microdosing; Multimodal; SPECT/CT; Sentinel node
- Accession Number: 0 (Radiopharmaceuticals)
0 (Technetium Tc 99m Aggregated Albumin)
0 (technetium Tc 99m nanocolloid) - Publication Date: Date Created: 20160330 Date Completed: 20170222 Latest Revision: 20210409
- Publication Date: 20240104
- Accession Number: PMC4969335
- Accession Number: 10.1007/s00259-016-3372-y
- Accession Number: 27020580
- Source:
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