In JoVE (1)

Other Publications (8)

Articles by Athanasios Sarantopoulos in JoVE

 JoVE Medicine

Multispectral Real-time Fluorescence Imaging for Intraoperative Detection of the Sentinel Lymph Node in Gynecologic Oncology

1Department of Surgery, Division of Surgical Oncology, University Medical Center Groningen, 2Helmholtz Zentrum, Technical University Munich, 3Department of Obstetrics and Gynaecology, University Medical Center Groningen

JoVE 2225

Other articles by Athanasios Sarantopoulos on PubMed

Hybrid System for Simultaneous Fluorescence and X-ray Computed Tomography

IEEE Transactions on Medical Imaging. Feb, 2010  |  Pubmed ID: 19906585

A hybrid imaging system for simultaneous fluorescence tomography and X-ray computed tomography (XCT) of small animals has been developed and presented. The system capitalizes on the imaging power of a 360 ( degrees )-projection free-space fluorescence tomography system, implemented within a microcomputed tomography scanner. Image acquisition is based on techniques that automatically adjust a series of imaging parameters to offer a high dynamic range dataset. Image segmentation further allows the incorporation of structural priors in the optical reconstruction problem to improve the imaging performance. The functional system characteristics are showcased, and images from a brain imaging study are shown, which are reconstructed using XCT-derived priors into the optical forward problem.

Imaging Performance of a Hybrid X-ray Computed Tomography-fluorescence Molecular Tomography System Using Priors

Medical Physics. May, 2010  |  Pubmed ID: 20527531

The performance is studied of two newly introduced and previously suggested methods that incorporate priors into inversion schemes associated with data from a recently developed hybrid x-ray computed tomography and fluorescence molecular tomography system, the latter based on CCD camera photon detection. The unique data set studied attains accurately registered data of high spatially sampled photon fields propagating through tissue along 360 degrees projections.

Intraoperative Multispectral Fluorescence Imaging for the Detection of the Sentinel Lymph Node in Cervical Cancer: a Novel Concept

Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging. Oct, 2011  |  Pubmed ID: 20835767

Real-time intraoperative near-infrared fluorescence (NIRF) imaging is a promising technique for lymphatic mapping and sentinel lymph node (SLN) detection. The purpose of this technical feasibility pilot study was to evaluate the applicability of NIRF imaging with indocyanin green (ICG) for the detection of the SLN in cervical cancer.

Imaging the Bio-distribution of Fluorescent Probes Using Multispectral Epi-illumination Cryoslicing Imaging

Molecular Imaging and Biology : MIB : the Official Publication of the Academy of Molecular Imaging. Oct, 2011  |  Pubmed ID: 20838910

The increasing availability of fluorescent probes for in vivo optical imaging enables the interrogation of complex biological processes in small animals serving as models for human-like tissue function and disease. However, the validation of probe bio-distribution during their development or the study of different disease models, in support of in vivo imaging studies, is not straightforward.

Enhancing Surgical Vision by Using Real-time Imaging of αvβ3-integrin Targeted Near-infrared Fluorescent Agent

Annals of Surgical Oncology. Nov, 2011  |  Pubmed ID: 21509632

This study was designed to improve the surgical procedure and outcome of cancer surgery by means of real-time molecular imaging feedback of tumor spread and margin delineation using targeted near-infrared fluorescent probes with specificity to tumor biomarkers. Surgical excision of cancer often is confronted with difficulties in the identification of cancer spread and the accurate delineation of tumor margins. Currently, the assessment of tumor borders is afforded by postoperative pathology or, less reliably, intraoperative frozen sectioning. Fluorescence imaging is a natural modality for intraoperative use by directly relating to the surgeon's vision and offers highly attractive characteristics, such as high-resolution, sensitivity, and portability. Via the use of targeted probes it also becomes highly tumor-specific and can lead to significant improvements in surgical procedures and outcome.

Detection of Irradiation-induced, Membrane Heat Shock Protein 70 (Hsp70) in Mouse Tumors Using Hsp70 Fab Fragment

Radiotherapy and Oncology : Journal of the European Society for Therapeutic Radiology and Oncology. Jun, 2011  |  Pubmed ID: 21704400

The major stress-inducible heat shock protein 70 (Hsp70) is frequently overexpressed in highly aggressive tumors, and elevated intracellular Hsp70 levels mediate protection against apoptosis. Following therapeutic intervention, such as ionizing irradiation, translocation of cytosolic Hsp70 to the plasma membrane is selectively increased in tumor cells and therefore, membrane Hsp70 might serve as a therapy-inducible, tumor-specific target structure.

Intraoperative Tumor-specific Fluorescence Imaging in Ovarian Cancer by Folate Receptor-α Targeting: First In-human Results

Nature Medicine. Oct, 2011  |  Pubmed ID: 21926976

The prognosis in advanced-stage ovarian cancer remains poor. Tumor-specific intraoperative fluorescence imaging may improve staging and debulking efforts in cytoreductive surgery and thereby improve prognosis. The overexpression of folate receptor-α (FR-α) in 90-95% of epithelial ovarian cancers prompted the investigation of intraoperative tumor-specific fluorescence imaging in ovarian cancer surgery using an FR-α-targeted fluorescent agent. In patients with ovarian cancer, intraoperative tumor-specific fluorescence imaging with an FR-α-targeted fluorescent agent showcased the potential applications in patients with ovarian cancer for improved intraoperative staging and more radical cytoreductive surgery.

Optical and Opto-Acoustic Interventional Imaging

Annals of Biomedical Engineering. Jan, 2012  |  Pubmed ID: 22227974

Many clinical interventional procedures, such as surgery or endoscopy, are today still guided by human vision and perception. Human vision however is not sensitive or accurate in detecting a large range of disease biomarkers, for example cellular or molecular processes characteristic of disease. For this reason advanced optical and opto-acoustic (photo-acoustic) methods are considered for enabling a more versatile, sensitive and accurate detection of disease biomarkers and complement human vision in clinical decision making during interventions. Herein, we outline developments in emerging fluorescence and opto-acoustic sensing and imaging techniques that can lead to practical implementations toward improving interventional vision.

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