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Lamba M, Singh PR, Bandyopadhyay A, Goswami A. Synthetic 18F labeled biomolecules that are selective and promising for PET imaging: major advances and applications. RSC Med Chem 2024; 15:1899-1920. [PMID: 38911154 PMCID: PMC11187557 DOI: 10.1039/d4md00033a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 04/14/2024] [Indexed: 06/25/2024] Open
Abstract
The concept of positron emission tomography (PET) based imaging was developed more than 40 years ago. It has been a widely adopted technique for detecting and staging numerous diseases in clinical settings, particularly cancer, neuro- and cardio-diseases. Here, we reviewed the evolution of PET and its advantages over other imaging modalities in clinical settings. Primarily, this review discusses recent advances in the synthesis of 18F radiolabeled biomolecules in light of the widely accepted performance for effective PET. The discussion particularly emphasizes the 18F-labeling chemistry of carbohydrates, lipids, amino acids, oligonucleotides, peptides, and protein molecules, which have shown promise for PET imaging in recent decades. In addition, we have deliberated on how 18F-labeled biomolecules enable the detection of metabolic changes at the cellular level and the selective imaging of gross anatomical localization via PET imaging. In the end, the review discusses the future perspective of PET imaging to control disease in clinical settings. We firmly believe that collaborative multidisciplinary research will further widen the comprehensive applications of PET approaches in the clinical management of cancer and other pathological outcomes.
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Affiliation(s)
- Manisha Lamba
- Department of Chemistry, Indian Institute of Technology Birla Farms Ropar Punjab-140001 India
| | - Prasoon Raj Singh
- Department of Chemistry, Indian Institute of Technology Birla Farms Ropar Punjab-140001 India
| | - Anupam Bandyopadhyay
- Department of Chemistry, Indian Institute of Technology Birla Farms Ropar Punjab-140001 India
| | - Avijit Goswami
- Department of Chemistry, Indian Institute of Technology Birla Farms Ropar Punjab-140001 India
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2
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Gherghe M, Mutuleanu MD, Stanciu AE, Irimescu I, Lazar AM, Toma RV, Trifanescu OG, Anghel RM. Quantitative Assessment of Treatment Response in Metastatic Breast Cancer Patients by SPECT-CT Bone Imaging-Getting Closer to PET-CT. Cancers (Basel) 2023; 15:cancers15030696. [PMID: 36765651 PMCID: PMC9913230 DOI: 10.3390/cancers15030696] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/15/2023] [Accepted: 01/21/2023] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Cancer represents the major cause of death mainly through its ability to spread to other organs, highlighting the importance of metastatic disease diagnosis and accurate follow up for treatment management purposes. Although until recently the main method for imaging interpretation was represented by qualitative methods, quantitative analysis of SPECT-CT data represents a viable, objective option. METHODS Seventy-five breast cancer patients presenting metastatic bone disease underwent at least two Bone SPECT-CT studies using [99mTc]-HDP between November 2019 to October 2022. RESULTS Our findings show a good positive relationship between the qualitative methods of imaging interpretation and quantitative analysis, with a correlation coefficient of 0.608 between qualitative whole body scintigraphy and quantitative SPECT-CT, and a correlation coefficient of 0.711 between the qualitative and quantitative interpretation of SPECT-CT data; nevertheless, there is a need for accurate, objective and reproducible methods for imaging interpretation, especially for research purposes. CONCLUSIONS Quantitative evaluation of the SPECT-CT data has the potential to be the first choice of imaging interpretation for patient follow up and treatment response evaluation, especially for research purposes, because of its objectivity and expression of uptake changes in absolute units.
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Affiliation(s)
- Mirela Gherghe
- Nuclear Medicine Department, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 București, Romania
- Nuclear Medicine Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Mario-Demian Mutuleanu
- Nuclear Medicine Department, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 București, Romania
- Nuclear Medicine Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
- Correspondence:
| | - Adina Elena Stanciu
- Carcinogenesis and Molecular Biology Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Ionela Irimescu
- Nuclear Medicine Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Alexandra Maria Lazar
- Nuclear Medicine Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Radu Valeriu Toma
- Oncology Department, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, Romania
- Radiotherapy I Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Oana Gabriela Trifanescu
- Oncology Department, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, Romania
- Radiotherapy II Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
| | - Rodica Maricela Anghel
- Oncology Department, University of Medicine and Pharmacy Carol Davila Bucharest, 050474 Bucharest, Romania
- Radiotherapy II Department, Institute of Oncology “Prof. Dr. Alexandru Trestioreanu”, 022328 Bucharest, Romania
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3
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Boekestijn I, van Oosterom MN, Dell'Oglio P, van Velden FHP, Pool M, Maurer T, Rietbergen DDD, Buckle T, van Leeuwen FWB. The current status and future prospects for molecular imaging-guided precision surgery. Cancer Imaging 2022; 22:48. [PMID: 36068619 PMCID: PMC9446692 DOI: 10.1186/s40644-022-00482-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 08/21/2022] [Indexed: 01/19/2023] Open
Abstract
Molecular imaging technologies are increasingly used to diagnose, monitor, and guide treatment of i.e., cancer. In this review, the current status and future prospects of the use of molecular imaging as an instrument to help realize precision surgery is addressed with focus on the main components that form the conceptual basis of intraoperative molecular imaging. Paramount for successful interventions is the relevance and accessibility of surgical targets. In addition, selection of the correct combination of imaging agents and modalities is critical to visualize both microscopic and bulk disease sites with high affinity and specificity. In this context developments within engineering/imaging physics continue to drive the growth of image-guided surgery. Particularly important herein is enhancement of sensitivity through improved contrast and spatial resolution, features that are critical if sites of cancer involvement are not to be overlooked during surgery. By facilitating the connection between surgical planning and surgical execution, digital surgery technologies such as computer-aided visualization nicely complement these technologies. The complexity of image guidance, combined with the plurality of technologies that are becoming available, also drives the need for evaluation mechanisms that can objectively score the impact that technologies exert on the performance of healthcare professionals and outcome improvement for patients.
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Affiliation(s)
- Imke Boekestijn
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.,Section of Nuclear Medicine, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Matthias N van Oosterom
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Paolo Dell'Oglio
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.,Department of Urology, ASST Grande Ospedale Metropolitano Niguarda, Milan, Italy
| | - Floris H P van Velden
- Medical Physics, Department of Radiology , Leiden University Medical Center, Leiden, the Netherlands
| | - Martin Pool
- Department of Clinical Farmacy and Toxicology, Leiden University Medical Center, Leiden, the Netherlands
| | - Tobias Maurer
- Martini-Klinik Prostate Cancer Centre Hamburg, Hamburg, Germany
| | - Daphne D D Rietbergen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.,Section of Nuclear Medicine, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Tessa Buckle
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands
| | - Fijs W B van Leeuwen
- Interventional Molecular Imaging Laboratory, Department of Radiology, Leiden University Medical Center, Leiden, the Netherlands.
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4
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Total-body [ 18F]FDG PET/CT scan has stepped into the arena: the faster, the better. Is it always true? Eur J Nucl Med Mol Imaging 2022; 49:3322-3327. [PMID: 35396968 DOI: 10.1007/s00259-022-05791-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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Dibble EH, Baird GL, Fahey FH, Hyun H. PET/computed tomography in inpatients: part 1, international survey. Nucl Med Commun 2021; 42:1045-1051. [PMID: 34001827 DOI: 10.1097/mnm.0000000000001418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The purposes of this study are to (1) identify patterns of inpatient PET/computed tomography (CT) use in and outside of the USA and (2) characterize inpatient PET/CT use by location and indication. MATERIALS AND METHODS The study was deemed exempt by the Institutional Review Board. A survey link through REDCap was emailed to the Society of Nuclear Medicine and Molecular Imaging (SNMMI) members and PET Centers of Excellence members and posted on the SNMMI website. Data were collected from May 2018 to August 2018. Analyses were conducted using SAS Software 9.4 with the NPAR1WAY procedure. Differences were evaluated using the Kruskal-Wallis test with statistical significance defined as P ≤ 0.05. RESULTS A total of 124 people responded to the survey, 71.8% (89/124) in the USA, and 26.6% (33/124) outside the USA [1.6% (2/124) no response]. 81.5% (101/124) read inpatient PET/CTs. Median percent of inpatient PET/CTs was 8.0% (range 0-100). Use of inpatient PET/CT was different (P < 0.0001) in the USA (5%, range 0-80%) versus outside USA (17.7%, range 0-100%). Use of inpatient PET/CT was different by institution type: median percent of inpatient PET/CTs in community teaching hospitals was 4.5% (range 0-50) versus 1.1% (range 0-20) in community nonteaching, 10% (range 0-80) in academic medical centers, and 20.0% (range 6.3-40) in government-affiliated institutions (P = 0.0001). CONCLUSIONS Most US and non-US respondents read inpatients PET/CTs. Non-US respondents read a higher percentage of inpatient PET/CTs than US respondents. Respondents in government-affiliated institutions read the highest percent of inpatient PET/CTs and community nonteaching institutions the least. Results of this survey may help physicians evaluate whether their practice of providing inpatient PET/CT fits with current practice patterns.
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Affiliation(s)
- Elizabeth H Dibble
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University
| | - Grayson L Baird
- Department of Diagnostic Imaging, The Warren Alpert Medical School of Brown University
- Lifespan Biostatistics Core, Providence, Rhode Island
| | - Frederic H Fahey
- Department of Radiology, Boston Children's Hospital
- Harvard Medical School
| | - Hyewon Hyun
- Harvard Medical School
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Brigham and Women's Hospital, Boston, Massachusetts, USA
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Yodsanit N, Wang B, Zhao Y, Guo LW, Kent KC, Gong S. Recent progress on nanoparticles for targeted aneurysm treatment and imaging. Biomaterials 2020; 265:120406. [PMID: 32979792 DOI: 10.1016/j.biomaterials.2020.120406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 09/14/2020] [Accepted: 09/18/2020] [Indexed: 02/06/2023]
Abstract
An abdominal aortic aneurysm (AAA) is a localized dilatation of the aorta that plagues millions. Its rupture incurs high mortality rates (~80-90%), pressing an urgent need for therapeutic methods to prevent this deadly outcome. Judiciously designed nanoparticles (NPs) have displayed a unique potential to fulfill this need. Aneurysms feature excessive inflammation and extracellular matrix (ECM) degradation. As such, typically inflammatory cells and exposed ECM proteins have been targeted with NPs for therapeutic, diagnostic, or theranostic purposes in experimental models. NPs have been used not only for encapsulation and delivery of drugs and biomolecules in preclinical tests, but also for enhanced imaging to monitor aneurysm progression in patients. Moreover, they can be readily modified with various molecules to improve lesion targeting, detectability, biocompatibility, and circulation time. This review updates on the progress, limitations, and prospects of NP applications in the context of AAA.
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Affiliation(s)
- Nisakorn Yodsanit
- Department of Biomedical Engineering, And Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Bowen Wang
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, 22903, USA
| | - Yi Zhao
- Department of Biomedical Engineering, And Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Lian-Wang Guo
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, 22903, USA.
| | - K Craig Kent
- Department of Surgery, School of Medicine, University of Virginia, Charlottesville, VA, 22903, USA.
| | - Shaoqin Gong
- Department of Biomedical Engineering, And Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, WI, 53715, USA; Department of Material Science and Engineering and Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53715, USA.
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Novel Nuclear Medicine Imaging Applications in Immuno-Oncology. Cancers (Basel) 2020; 12:cancers12051303. [PMID: 32455666 PMCID: PMC7281332 DOI: 10.3390/cancers12051303] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Revised: 05/11/2020] [Accepted: 05/19/2020] [Indexed: 12/12/2022] Open
Abstract
The global immuno-oncology pipeline has grown progressively in recent years, leading cancer immunotherapy to become one of the main issues of the healthcare industry. Despite their success in the treatment of several malignancies, immune checkpoint inhibitors (ICIs) perform poorly in others. Again, ICIs action depends on such a multitude of clinico-pathological features, that the attempt to predict responders/long-responders with ad-hoc built immunograms revealed to be quite complex. In this landscape, the role of nuclear medicine might be crucial, with first interesting evidences coming from small case series and pre-clinical studies. Positron-emission tomography (PET) techniques provide functional information having a predictive and/or prognostic value in patients treated with ICIs or adoptive T-cell therapy. Recently, a characterization of the tumor immune microenvironment (TiME) pattern itself has been shown to be feasible through the use of different radioactive tracers or image algorithms, thus adding knowledge about tumor heterogeneity. Finally, nuclear medicine exams permit an early detection of immune-related adverse events (irAEs), with on-going clinical trials investigating their correlation with patients’ outcome. This review depicts the recent advances in molecular imaging both in terms of non-invasive diagnosis of TiME properties and benefit prediction from immunotherapeutic agents.
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8
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Ramanathan S, Tirumani SH, Ojili V. Nodal metastasis in gynecologic malignancies: Update on imaging and management. Clin Imaging 2020; 59:157-166. [DOI: 10.1016/j.clinimag.2019.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 10/25/2019] [Accepted: 11/14/2019] [Indexed: 01/18/2023]
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Gatidis S, Beyer T, Becker M, Riklund K, Nikolaou K, Cyran C, Pfannenberg C. State of affairs of hybrid imaging in Europe: two multi-national surveys from 2017. Insights Imaging 2019; 10:57. [PMID: 31115706 PMCID: PMC6529476 DOI: 10.1186/s13244-019-0741-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/04/2019] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES To assess the current state of hybrid imaging in Europe with respect to operations, reading and reporting, as well as qualification and training. METHODS The first survey (LOCAL) was sent to the heads of the departments of radiology and nuclear medicine in Europe in 2017, including 15 questions regarding the organisation of hybrid imaging operations, reporting strategies for PET/CT and the existence of relevant training programmes. The second survey (NATIONAL) consisted of 10 questions and was directed to the national ministries of health of 37 European countries addressing combined training options in radiology and nuclear medicine. RESULTS In the LOCAL survey, 61 valid responses from 26 European countries were received. In almost half of the institutions, hybrid imaging was performed within a single department, mainly in nuclear medicine departments (31%). In half of the centres (51%), PET/CT reports were performed jointly, while in 20% of the centres, reporting was performed by nuclear medicine physicians. Radiologists were responsible for presenting hybrid imaging results in clinical boards in 34% of responding sites. Integrated hybrid imaging training was available in 41% sites. In the NATIONAL survey, responses from 34 countries were received and demonstrated a heterogeneous landscape of official training possibilities in radiology and nuclear medicine with limited opportunities for additional qualifications in hybrid imaging. CONCLUSIONS The results of these surveys demonstrate a notable heterogeneity in the current practice of hybrid imaging throughout Europe. This heterogeneity exists despite the general consensus that strong professional cooperation is required in order to ensure high clinical quality and to strengthen the clinical role of hybrid imaging.
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Affiliation(s)
- Sergios Gatidis
- Department of Radiology, University Hospital Tübingen, 72076, Tübingen, Germany.
| | - Thomas Beyer
- QIMP Team, Center for Medical Physics and Biomedical Engineering, Medical University Vienna, Vienna, Austria
| | - Minerva Becker
- Department of Radiology and Medical Informatics, University Hospital Geneva, Geneva, Switzerland
| | - Katrine Riklund
- Department of Radiology, Radiation Sciences, Umeå University, 901 85, Umeå, Sweden
| | - Konstantin Nikolaou
- Department of Radiology, University Hospital Tübingen, 72076, Tübingen, Germany
| | - Clemens Cyran
- Department of Radiology, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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Radiologists and nuclear medicine physicians are looking forward to a cross-curricular training. Eur Radiol 2019; 29:4803-4811. [DOI: 10.1007/s00330-018-5989-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 12/03/2018] [Accepted: 12/19/2018] [Indexed: 10/27/2022]
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11
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Zeng Y, Zhu J, Wang J, Parasuraman P, Busi S, Nauli SM, Wáng YXJ, Pala R, Liu G. Functional probes for cardiovascular molecular imaging. Quant Imaging Med Surg 2018; 8:838-852. [PMID: 30306063 PMCID: PMC6177368 DOI: 10.21037/qims.2018.09.19] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/17/2018] [Indexed: 12/26/2022]
Abstract
Cardiovascular diseases (CVDs) are a severely threatening disorder and frequently cause death in industrialized countries, posing critical challenges to modern research and medicine. Molecular imaging has been heralded as the solution to many problems encountered in individuals living with CVD. The use of probes in cardiovascular molecular imaging is causing a paradigmatic shift from regular imaging techniques, to future advanced imaging technologies, which will facilitate the acquisition of vital information at the cellular and molecular level. Advanced imaging for CVDs will help early detection of disease development, allow early therapeutic intervention, and facilitate better understanding of fundamental biological processes. To promote a better understanding of cardiovascular molecular imaging, this article summarizes the current developments in the use of molecular probes, highlighting some of the recent advances in probe design, preparation, and functional modification.
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Affiliation(s)
- Yun Zeng
- Department of Pharmacology, Xiamen Medical College, Xiamen 361008, China
| | - Jing Zhu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
| | - Junqing Wang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- Department of Imaging and Interventional Radiology, Prince of Wales Hospital, the Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Paramanantham Parasuraman
- Departments of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Siddhardha Busi
- Departments of Microbiology, School of Life Sciences, Pondicherry University, Puducherry 605014, India
| | - Surya M. Nauli
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, California, USA
| | - Yì Xiáng J. Wáng
- Department of Imaging and Interventional Radiology, Prince of Wales Hospital, the Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Rajasekharreddy Pala
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University, Irvine, California, USA
| | - Gang Liu
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen 361102, China
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Padmanabhan P, Nedumaran AM, Mishra S, Pandarinathan G, Archunan G, Gulyás B. The Advents of Hybrid Imaging Modalities: A New Era in Neuroimaging Applications. ACTA ACUST UNITED AC 2017; 1:e1700019. [PMID: 32646180 DOI: 10.1002/adbi.201700019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 03/30/2017] [Indexed: 01/29/2023]
Abstract
Hybrid Imaging modalities have shown great potential in medical imaging and diagnosis. A more comprehensive and targeted view of neurological disorders can be achieved by blending the anatomical and functional perspectives through hybridization. With consistently improving technologies, there have been many developments in fused imaging techniques over the past few decades. This article provides an overview of various bimodal and trimodal hybrid imaging techniques being developed and explored for neuroimaging applications. Recent advancements and potentials are discussed for single photon emission computed tomography-computed tomography (SPECT-CT), positron emission tomography-CT (PET-CT), PET-magnetic resonance imaging (PET-MRI), electroencephalography-functional magnetic resonance imaging (EEG-fMRI), magnetoencephalography-fMRI (MEG-fMRI), EEG-near-infrared spectroscopy (EEG-NIRS), magnetic resonance-PET-EEG (MR-PET-EEG) and MR-PET-CT in the perspective of neuroimaging. A comparison of these hybrid approaches is provided on a single platform to analyze their performance on the basis of several common factors essential for imaging and analyzing neurological disorders and in vivo molecular processes. This article also provides an overview of recently developed advanced imaging technologies that are being hybridized with other imaging modalities and being explored as potential techniques for neuroscience. Novel approaches and clinical applications of hybrid neuroimaging are anticipated with inclusion of new technologies, better sensing capabilities, multimodal probes, and improved hybridization.
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Affiliation(s)
- Parasuraman Padmanabhan
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921, Singapore
| | - Anu Maashaa Nedumaran
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921, Singapore.,Department of Biomedical Engineering, SRM University, SRM Nagar, Kattankulathur, Kanchipuram, Tamil Nadu, 603203, India
| | - Sachin Mishra
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921, Singapore
| | - Ganesh Pandarinathan
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921, Singapore.,Department of Biomedical Engineering, SRM University, SRM Nagar, Kattankulathur, Kanchipuram, Tamil Nadu, 603203, India
| | - Govindaraju Archunan
- Centre for Pheromone Technology, Department of Animal Science, Bharathidasan University, Tiruchirappalli, 620024, India
| | - Balázs Gulyás
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, 636921, Singapore
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Liu M, Guo H, Liu H, Zhang Z, Chi C, Hui H, Dong D, Hu Z, Tian J. In vivo pentamodal tomographic imaging for small animals. BIOMEDICAL OPTICS EXPRESS 2017; 8:1356-1371. [PMID: 28663833 PMCID: PMC5480548 DOI: 10.1364/boe.8.001356] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/24/2017] [Accepted: 01/27/2017] [Indexed: 05/05/2023]
Abstract
Multimodality molecular imaging emerges as a powerful strategy for correlating multimodal information. We developed a pentamodal imaging system which can perform positron emission tomography, bioluminescence tomography, fluorescence molecular tomography, Cerenkov luminescence tomography and X-ray computed tomography successively. Performance of sub-systems corresponding to different modalities were characterized. In vivo multimodal imaging of an orthotopic hepatocellular carcinoma xenograft mouse model was performed, and acquired multimodal images were fused. The feasibility of pentamodal tomographic imaging system was successfully validated with the imaging application on the mouse model. The ability of integrating anatomical, metabolic, and pharmacokinetic information promises applications of multimodality molecular imaging in precise medicine.
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Affiliation(s)
- Muhan Liu
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education & School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- Contributed equally
| | - Hongbo Guo
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- School of Information Sciences and Technology, Northwest University, Xi'an, 710069, China
- Contributed equally
| | - Hongbo Liu
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education & School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zeyu Zhang
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chongwei Chi
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Hui Hui
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Di Dong
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhenhua Hu
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- The State Key Laboratory of Management and Control of Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jie Tian
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education & School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
- The State Key Laboratory of Management and Control of Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
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Examining Quality Management Audits in Nuclear Medicine Practice as a lifelong learning process: opportunities and challenges to the nuclear medicine professional and beyond. Nucl Med Commun 2017; 37:785-91. [PMID: 27195385 DOI: 10.1097/mnm.0000000000000506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
This essay will explore the critical issues and challenges surrounding lifelong learning for professionals, initially exploring within the profession and organizational context of nuclear medicine practice. It will critically examine how the peer-review process called Quality Management Audits in Nuclear Medicine Practice (QUANUM) of the International Atomic Energy Agency (IAEA) can be considered a lifelong learning opportunity to instill a culture of quality to improve patient care and elevate the status of the nuclear medicine profession and practice within the demands of social changes, policy, and globalization. This will be explored initially by providing contextual background to the identity of the IAEA as an organization responsible for nuclear medicine professionals, followed by the benefits that QUANUM can offer. Further key debates surrounding lifelong learning, such as compulsification of lifelong learning and impact on professional change, will then be weaved through the discussion using theoretical grounding through a qualitative review of the literature. Keeping in mind that there is very limited literature focusing on the implications of QUANUM as a lifelong learning process for nuclear medicine professionals, this essay uses select narratives and observations of QUANUM as a lifelong learning process from an auditor's perspective and will further provide a comparative perspective of QUANUM on the basis of other lifelong learning opportunities such as continuing professional development activities and observe parallelisms on its benefits and challenges that it will offer to other professionals in other medical speciality fields and in the teaching profession.
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PET/CT: underlying physics, instrumentation, and advances. RADIOLOGIA 2017; 59:431-445. [PMID: 28089381 DOI: 10.1016/j.rx.2016.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 08/23/2016] [Accepted: 10/03/2016] [Indexed: 01/03/2023]
Abstract
Since it was first introduced, the main goal of PET/CT has been to provide both PET and CT images with high clinical quality and to present them to radiologists and specialists in nuclear medicine as a fused, perfectly aligned image. The use of fused PET and CT images quickly became routine in clinical practice, showing the great potential of these hybrid scanners. Thanks to this success, manufacturers have gone beyond considering CT as a mere attenuation corrector for PET, concentrating instead on design high performance PET and CT scanners with more interesting features. Since the first commercial PET/CT scanner became available in 2001, both the PET component and the CT component have improved immensely. In the case of PET, faster scintillation crystals with high stopping power such as LYSO crystals have enabled more sensitive devices to be built, making it possible to reduce the number of undesired coincidence events and to use time of flight (TOF) techniques. All these advances have improved lesion detection, especially in situations with very noisy backgrounds. Iterative reconstruction methods, together with the corrections carried out during the reconstruction and the use of the point-spread function, have improved image quality. In parallel, CT instrumentation has also improved significantly, and 64- and 128-row detectors have been incorporated into the most modern PET/CT scanners. This makes it possible to obtain high quality diagnostic anatomic images in a few seconds that both enable the correction of PET attenuation and provide information for diagnosis. Furthermore, nowadays nearly all PET/CT scanners have a system that modulates the dose of radiation that the patient is exposed to in the CT study in function of the region scanned. This article reviews the underlying physics of PET and CT imaging separately, describes the changes in the instrumentation and standard protocols in a combined PET/CT system, and finally points out the most important advances in this hybrid imaging modality.
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Arevalo-Perez J, Paris M, Graham MM, Osborne JR. A Perspective of the Future of Nuclear Medicine Training and Certification. Semin Nucl Med 2016; 46:88-96. [PMID: 26687859 DOI: 10.1053/j.semnuclmed.2015.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Nuclear Medicine (NM) has evolved from a medical subspecialty using quite basic tests to one using elaborate methods to image organ physiology and has truly become "Molecular Imaging." Concurrently, there has also been a timely debate about who has to be responsible for keeping pace with all of the components of the developmental cycle-imaging, radiopharmaceuticals, and instrumentation. Since the foundation of the American Board of NM, the practice of NM and the process toward certification have undergone major revisions. At present, the debate is focused on the inevitable future convergence of Radiology and NM. The potential for further cooperation or fusion of the American Board of Radiology and the American Board of NM is likely to bring about a new path for NM and Molecular Imaging training. If the merger is done carefully, respecting the strengths of both partners equally, there is an excellent potential to create a hybrid NM-Radiology specialty that combines Physiology and Molecular Biology with detailed anatomical imaging that sustains the innovation that has been central to NM residency and practice. We introduce a few basic trends in imaging use in the United States. These trends do not predict future use, but highlight the need for an appropriately credentialed practitioner to interpret these examination results and provide value to the health care system.
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Affiliation(s)
- Julio Arevalo-Perez
- Department of Radiology, Molecular Imaging and Therapy Service, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Manuel Paris
- Department of Radiology, Molecular Imaging and Therapy Service, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - Michael M Graham
- Department of Radiology, University of Iowa Hospitals and Clinics, Iowa City, IA
| | - Joseph R Osborne
- Department of Radiology, Molecular Imaging and Therapy Service, Memorial Sloan-Kettering Cancer Center, New York, NY.
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Boublay N, Schott AM, Krolak-Salmon P. Neuroimaging correlates of neuropsychiatric symptoms in Alzheimer's disease: a review of 20 years of research. Eur J Neurol 2016; 23:1500-9. [PMID: 27435186 DOI: 10.1111/ene.13076] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 06/08/2016] [Indexed: 11/28/2022]
Abstract
Assessing morphological, perfusion and metabolic brain changes preceding or associated with neuropsychiatric symptoms (NPSs) will help in the understanding of pathophysiological underlying processes in Alzheimer's disease (AD). This review aimed to highlight the main findings on significant associations between neuroimaging and NPSs, the pathophysiology to elucidate possible underlying mechanisms, and methodological issues to aid future research. Research papers published from January 1990 to October 2015 were identified in the databases PsycInfo, Embase, PubMed and Medline, using key words related to NPSs and imaging techniques. In addition to a semi-systematic search in the databases, we also performed hand searches based on reported citations identified to be of interest. Delusions, apathy and depression symptoms were particularly associated with brain changes in AD. The majority of studies disclosed an association between frontal lobe structural and/or metabolic changes and NPSs, implicating, interestingly, for all 12 NPSs studied, the anterior cingulate cortex although temporal, subcortical and parietal regions, and insula were also involved. Given the high degree of connectivity of these brain areas, frontal change correlates of NPSs may help in the understanding of neural network participation. This review also highlights crucial methodological issues that may reduce the heterogeneity of results to enable progress on the pathophysiological mechanisms and aid research on NPS treatments in AD. Based on a broad review of the current literature, a global brain pattern to support the huge heterogeneity of neuroimaging correlates of NPSs in AD and methodological strategies are suggested to help direct future research.
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Affiliation(s)
- N Boublay
- Memory Clinical and Research Center of Lyon, Hospital of Charpennes, University Hospital of Lyon, Lyon, France. .,University of Lyon, Lyon, France. .,Hospices Civils de Lyon, Pôle Information Médicale Evaluation Recherche, Lyon, France. .,INSERM, U1028, CNRS, UMR5292, Lyon Neuroscience Research Center, Brain Dynamics and Cognition Team, Lyon, France.
| | - A M Schott
- Hospices Civils de Lyon, Pôle Information Médicale Evaluation Recherche, Lyon, France.,University Lyon 1, Lyon, France
| | - P Krolak-Salmon
- Memory Clinical and Research Center of Lyon, Hospital of Charpennes, University Hospital of Lyon, Lyon, France.,University of Lyon, Lyon, France.,Clinical Research Centre CRC - VCF (Vieillissement - Cerveau - Fragilité), Hospital of Charpennes, University Hospital of Lyon, Lyon, France.,INSERM, U1028, CNRS, UMR5292, Lyon Neuroscience Research Center, Brain Dynamics and Cognition Team, Lyon, France
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Burhan AM, Marlatt NM, Palaniyappan L, Anazodo UC, Prato FS. Role of Hybrid Brain Imaging in Neuropsychiatric Disorders. Diagnostics (Basel) 2015; 5:577-614. [PMID: 26854172 PMCID: PMC4728476 DOI: 10.3390/diagnostics5040577] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/21/2015] [Accepted: 11/26/2015] [Indexed: 01/09/2023] Open
Abstract
This is a focused review of imaging literature to scope the utility of hybrid brain imaging in neuropsychiatric disorders. The review focuses on brain imaging modalities that utilize hybrid (fusion) techniques to characterize abnormal brain molecular signals in combination with structural and functional changes that have been observed in neuropsychiatric disorders. An overview of clinical hybrid brain imaging technologies for human use is followed by a selective review of the literature that conceptualizes the use of these technologies in understanding basic mechanisms of major neuropsychiatric disorders and their therapeutics. Neuronal network abnormalities are highlighted throughout this review to scope the utility of hybrid imaging as a potential biomarker for each disorder.
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Affiliation(s)
- Amer M Burhan
- St. Joseph's Health Care London, Parkwood Institute, 550 Wellington Road, London, ON N6C 0A7, Canada.
- Department of Psychiatry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6C 2R6, Canada.
| | - Nicole M Marlatt
- St. Joseph's Health Care London, Parkwood Institute, 550 Wellington Road, London, ON N6C 0A7, Canada.
| | - Lena Palaniyappan
- Department of Psychiatry, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON N6C 2R6, Canada.
| | | | - Frank S Prato
- Lawson Health Research Institute, London, ON N6C 2R5, Canada.
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Valdés Olmos RA, de Geus-Oei LF, Ticheler CHJM, Bloem JL. From Incidentaloma to Oncocytoma: A Role for Hybrid Molecular Imaging in Characterising Renal Masses? Eur Urol 2015; 69:417-8. [PMID: 26453374 DOI: 10.1016/j.eururo.2015.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2015] [Accepted: 09/22/2015] [Indexed: 11/16/2022]
Affiliation(s)
| | - Lioe-Fee de Geus-Oei
- Department of Radiology, Leiden University Medical Centre, Leiden, The Netherlands
| | | | - Johan L Bloem
- Department of Radiology, Leiden University Medical Centre, Leiden, The Netherlands
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Liu S, Cai W, Liu S, Zhang F, Fulham M, Feng D, Pujol S, Kikinis R. Multimodal neuroimaging computing: the workflows, methods, and platforms. Brain Inform 2015; 2:181-195. [PMID: 27747508 PMCID: PMC4737665 DOI: 10.1007/s40708-015-0020-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 08/20/2015] [Indexed: 12/20/2022] Open
Abstract
The last two decades have witnessed the explosive growth in the development and use of noninvasive neuroimaging technologies that advance the research on human brain under normal and pathological conditions. Multimodal neuroimaging has become a major driver of current neuroimaging research due to the recognition of the clinical benefits of multimodal data, and the better access to hybrid devices. Multimodal neuroimaging computing is very challenging, and requires sophisticated computing to address the variations in spatiotemporal resolution and merge the biophysical/biochemical information. We review the current workflows and methods for multimodal neuroimaging computing, and also demonstrate how to conduct research using the established neuroimaging computing packages and platforms.
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Affiliation(s)
- Sidong Liu
- School of IT, The University of Sydney, Sydney, Australia.
| | - Weidong Cai
- School of IT, The University of Sydney, Sydney, Australia
| | - Siqi Liu
- School of IT, The University of Sydney, Sydney, Australia
| | - Fan Zhang
- School of IT, The University of Sydney, Sydney, Australia
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
| | - Michael Fulham
- Department of PET and Nuclear Medicine, Royal Prince Alfred Hospital, Sydney Medical School, The University of Sydney, Sydney, Australia
| | - Dagan Feng
- School of IT, The University of Sydney, Sydney, Australia
- Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Sonia Pujol
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
| | - Ron Kikinis
- Surgical Planning Laboratory, Harvard Medical School, Boston, USA
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Wang W, Zhao J, Short M, Zeng H. Real-time in vivo cancer diagnosis using Raman spectroscopy. JOURNAL OF BIOPHOTONICS 2015; 8:527-45. [PMID: 25220508 DOI: 10.1002/jbio.201400026] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 07/25/2014] [Accepted: 08/12/2014] [Indexed: 05/02/2023]
Abstract
Raman spectroscopy has becoming a practical tool for rapid in vivo tissue diagnosis. This paper provides an overview on the latest development of real-time in vivo Raman systems for cancer detection. Instrumentation, data handling, as well as oncology applications of Raman techniques were covered. Optic fiber probes designs for Raman spectroscopy were discussed. Spectral data pre-processing, feature extraction, and classification between normal/benign and malignant tissues were surveyed. Applications of Raman techniques for clinical diagnosis for different types of cancers, including skin cancer, lung cancer, stomach cancer, oesophageal cancer, colorectal cancer, cervical cancer, and breast cancer, were summarized. Schematic of a real-time Raman spectrometer for skin cancer detection. Without correction, the image captured on CCD camera for a straight entrance slit has a curvature. By arranging the optic fiber array in reverse orientation, the curvature could be effectively corrected.
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Affiliation(s)
- Wenbo Wang
- Imaging Unit - Integrative Oncology Department, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, B.C., V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | - Jianhua Zhao
- Imaging Unit - Integrative Oncology Department, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, B.C., V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
| | - Michael Short
- Imaging Unit - Integrative Oncology Department, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, B.C., V5Z 1L3, Canada
| | - Haishan Zeng
- Imaging Unit - Integrative Oncology Department, British Columbia Cancer Agency Research Centre, 675 West 10th Avenue, Vancouver, B.C., V5Z 1L3, Canada
- Photomedicine Institute, Department of Dermatology and Skin Science, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
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Design and implementation of a web-based PET-CT reporting assessment and e-portfolio tool. Clin Radiol 2015; 70:123-7. [DOI: 10.1016/j.crad.2014.10.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/16/2014] [Accepted: 10/27/2014] [Indexed: 11/21/2022]
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Baek S, Yoon DY, Min KJ, Lim KJ, Seo YL, Yun EJ. Characteristics and trends of research on positron emission tomography: a bibliometric analysis, 2002-2012. Ann Nucl Med 2014; 28:455-62. [PMID: 24619790 DOI: 10.1007/s12149-014-0836-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 02/27/2014] [Indexed: 01/07/2023]
Abstract
OBJECTIVE We performed a bibliometric analysis of scientific publications focused on positron emission tomography (PET) over a 10-year period. METHODS The MEDLINE and ISI Web of Knowledge databases were searched for English language original articles focused on PET in SCI/SCIE-indexed journals in 2002, 2007, and 2012. We selected the documents with titles that included "PET" or "positron emission." The following information was obtained from each article: journal (year of publication, title, subject category, and impact factor), subspecialty, imaging modality used, tracer, species, sample size, number of authors, affiliation of the first author, declared funding, and country of origin. RESULTS The yearly publication on PET increased from 547 (2002) to 986 (2007), and 1838 (2012). A total of 1753 (52.0%) articles were published in journals in the "Radiology, Nuclear Medicine & Medical Imaging" category, 1512 (44.9%) were in the subspecialty of oncology, 3245 (96.3%) used PET or PET/CT, 1698 (50.4%) used 2-fluoro-2-deoxy-D-glucose (FDG) as the radiotracer, 2378 (70.5%) were human studies, 1294 (38.4%) had a sample size of <20, 1674 (49.7%) had >7 authors, 779 (23.1%) were written by a first author from a department of nuclear medicine, and 1337 (39.7%) were supported by government funding. The United States published 948 studies (28.1%) followed by Japan (345, 10.2%) and Germany (335, 9.9%). In the time trend analysis oncology subspecialty, PET/MR as the imaging modality, FDG as the tracer, sample size>50, number of authors>7, radiology department affiliation of the first author, and government funding exhibited significantly positive trends. CONCLUSIONS The number of publication concerning PET has increased rapidly over the last decade. This bibliometric analysis revealed characteristics and trends of current PET research that provides useful information to researchers.
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Affiliation(s)
- Sora Baek
- Department of Nuclear Medicine, Kangdong Seong-Sim Hospital, Hallym University College of Medicine, 445 Gil-dong Kangdong-Gu, Seoul, 134-701, Korea
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Poehlmann M, Grishenkov D, Kothapalli SVVN, Härmark J, Hebert H, Philipp A, Hoeller R, Seuss M, Kuttner C, Margheritelli S, Paradossi G, Fery A. On the interplay of shell structure with low- and high-frequency mechanics of multifunctional magnetic microbubbles. SOFT MATTER 2014; 10:214-26. [PMID: 24651844 DOI: 10.1039/c3sm51560e] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Polymer-shelled magnetic microbubbles have great potential as hybrid contrast agents for ultrasound and magnetic resonance imaging. In this work, we studied US/MRI contrast agents based on air-filled poly(vinyl alcohol)-shelled microbubbles combined with superparamagnetic iron oxide nanoparticles (SPIONs). The SPIONs are integrated either physically or chemically into the polymeric shell of the microbubbles (MBs). As a result, two different designs of a hybrid contrast agent are obtained. With the physical approach, SPIONs are embedded inside the polymeric shell and with the chemical approach SPIONs are covalently linked to the shell surface. The structural design of hybrid probes is important, because it strongly determines the contrast agent's response in the considered imaging methods. In particular, we were interested how structural differences affect the shell's mechanical properties, which play a key role for the MBs' US imaging performance. Therefore, we thoroughly characterized the MBs' geometric features and investigated low-frequency mechanics by using atomic force microscopy (AFM) and high-frequency mechanics by using acoustic tests. Thus, we were able to quantify the impact of the used SPIONs integration method on the shell's elastic modulus, shear modulus and shear viscosity. In summary, the suggested approach contributes to an improved understanding of structure-property relations in US-active hybrid contrast agents and thus provides the basis for their sustainable development and optimization.
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Affiliation(s)
- Melanie Poehlmann
- Department of Physical Chemistry II, University of Bayreuth, Universitätsstraße 30, DE-95440 Bayreuth, Germany.
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Casas-Zamora JA, Kashyap R. The IAEA technical cooperation programme and nuclear medicine in the developing world: objectives, trends, and contributions. Semin Nucl Med 2013; 43:172-80. [PMID: 23561454 DOI: 10.1053/j.semnuclmed.2012.11.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The International Atomic Energy Agency's technical cooperation (TC) programme helps Member States in the developing world with limited infrastructure and human resource capacity to harness the potential of nuclear technologies in meeting socioeconomic development challenges. As a part of its human health TC initiatives, the Agency, through the TC mechanism, has the unique role of promoting nuclear medicine applications of fellowships, scientific visits, and training courses, via technology procurement, and in the past decade has contributed nearly $54 million through 180 projects in supporting technology procurement and human resource capacity development among Member States from the developing world (low- and middle-income countries). There has been a growing demand in nuclear medicine TC, particularly in Africa and ex-Soviet Union States where limited infrastructure presently exists, based on cancer and cardiovascular disease management projects. African Member States received the greatest allocation of TC funds in the past 10 years dedicated to building new or rehabilitating obsolete nuclear medicine infrastructure through procurement support of single-photon emission computed tomography machines. Agency support in Asia and Latin America has emphasized human resource capacity building, as Member States in these regions have already acquired positron emission tomography and hybrid modalities (positron emission tomography/computed tomography and single-photon emission computed tomography/computed tomography) in their health systems. The strengthening of national nuclear medicine capacities among Member States across different regions has enabled stronger regional cooperation among developing countries who through the Agency's support and within the framework of regional cooperative agreements are sharing expertise and fostering the sustainability and productive integration of nuclear medicine within their health systems.
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Kashyap R, Dondi M, Paez D, Mariani G. Hybrid imaging worldwide-challenges and opportunities for the developing world: a report of a Technical Meeting organized by IAEA. Semin Nucl Med 2013; 43:208-23. [PMID: 23561459 DOI: 10.1053/j.semnuclmed.2013.02.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The growth in nuclear medicine, in the past decade, is largely due to hybrid imaging, specifically single-photon emission tomography-computed tomography (SPECT-CT) and positron emission tomography-computed tomography (PET-CT). Introduction and use of hybrid imaging has been growing at a fast pace. This has led to many challenges and opportunities to the personnel dealing with it. The International Atomic Energy Agency (IAEA) keeps a close watch on the trends in applications of nuclear techniques in health by many ways, including obtaining inputs from member states and professional societies. In 2012, a Technical Meeting on trends in hybrid imaging was organized by IAEA to understand the current status and trends of hybrid imaging using nuclear techniques, its role in clinical practice, and associated educational needs and challenges. Perspective of scientific societies and professionals from all the regions of the world was obtained. Heterogeneity in value, educational needs, and access was noted and the drivers of this heterogeneity were discussed. This article presents the key points shared during the technical meeting, focusing primarily on SPECT-CT and PET-CT, and shares the action plan for IAEA to deal with heterogeneity as suggested by the participants.
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Affiliation(s)
- Ravi Kashyap
- International Atomic Energy Agency (IAEA), Wagramer Strasse 5, Vienna, Austria.
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27
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Burger IA, Vargas HA, Donati OF, Andikyan V, Sala E, Gonen M, Goldman DA, Chi DS, Schöder H, Hricak H. The value of 18F-FDG PET/CT in recurrent gynecologic malignancies prior to pelvic exenteration. Gynecol Oncol 2013; 129:586-592. [PMID: 23369941 DOI: 10.1016/j.ygyno.2013.01.017] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2012] [Revised: 01/15/2013] [Accepted: 01/17/2013] [Indexed: 10/27/2022]
Abstract
OBJECTIVE In patients undergoing pelvic exenteration for recurrent gynecological malignancies, we assessed the performance of [(18)F]-FDG PET/CT for delineating disease extent and evaluated the association between quantitative FDG uptake metrics (SUVmax, total lesion glycolysis [TLG] and metabolic tumor volume [MTV]) and progression-free survival (PFS) and overall survival (OS). METHODS Retrospective study of patients undergoing pelvic exenteration for gynecologic malignancies between January 2002 and November 2011 who had FDG PET/CT within 90days before surgery. Two readers (R1, R2) independently determined the presence of bladder, rectum, vagina, cervix and pelvic side wall invasion and measured SUVmax, TLG and MTV in each patient. Areas under the curve (AUCs), for detecting organ invasion were calculated. Kaplan-Meier graphs were used to determine associations between FDG uptake and PFS/OS. Inter-reader agreement was assessed. RESULTS 33 patients (mean age 56years, range: 28-81) were included; primary sites of disease were the cervix (n=18), uterus (n=8) and vagina/vulva (n=7). AUCs for organ invasion ranged from 0.74 to 0.96. There was a significant association between FDG uptake metrics incorporating tumor volume (TLG and MTV) and OS (p≤0.001) as well as between MTV and PFS (p=0.001). No significant association was identified between SUVmax and OS/PFS (p=0.604/0.652). Inter-reader agreement for organ invasion was fair to substantial (k=0.36-0.74) and almost perfect for FDG quantification (ICC=0.97-0.99). CONCLUSION In patients undergoing pelvic exenteration for recurrent gynecological malignancies, (18)F-FDG PET/CT is useful for preoperative assessment of disease extent. Furthermore, quantitative metrics of FDG uptake incorporating MTV serve as predictive biomarkers of progression-free and overall survival in this population.
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Affiliation(s)
- Irene A Burger
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Hebert Alberto Vargas
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Olivio F Donati
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Vaagn Andikyan
- Department of Gynecology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Evis Sala
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Mithat Gonen
- Department of Epidemiology-Biostatistics, Memorial Sloan-Kettering Cancer Center, 307 E 63rd Street, New York, NY 10065, USA
| | - Debra A Goldman
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Dennis S Chi
- Department of Gynecology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Heiko Schöder
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
| | - Hedvig Hricak
- Department of Radiology, Memorial Sloan-Kettering Cancer Center, 1275 York Ave., New York, NY 10065, USA
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Pan T, Zaidi H. Attenuation Correction Strategies for Positron Emission Tomography/Computed Tomography and 4-Dimensional Positron Emission Tomography/Computed Tomography. PET Clin 2012; 8:37-50. [PMID: 27157814 DOI: 10.1016/j.cpet.2012.09.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This article discusses attenuation correction strategies in positron emission tomography/computed tomography (PET/CT) and 4-dimensional PET/CT imaging. Average CT scan derived from averaging the high temporal resolution CT images is effective in improving the registration of the CT and the PET images and quantification of the PET data. It underscores list-mode data acquisition in 4-dimensional PET, and introduces 4-dimensional CT, popular in thoracic treatment planning, to 4-dimensional PET/CT.
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Affiliation(s)
- Tinsu Pan
- Department of Imaging Physics, MD Anderson Cancer Center, The University of Texas, Unit 1352, 1515 Holcome Boulevard, Houston, TX 77030, USA.
| | - Habib Zaidi
- Division of Nuclear Medicine and Molecular Imaging, Geneva University Hospital, CH-1211 Geneva, Switzerland; Geneva Neuroscience Center, Geneva University, CH-1211 Geneva, Switzerland; Department of Nuclear Medicine and Molecular Imaging, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, Netherlands
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Abstract
Although FDG PET and PET/CT have a well established role in the management of most cancer patients, they also have some limitations. For the last 15-20 years a growing number of non-FDG PET tracers have been used in research. Many of these new PET tracers are being investigated for the non-invasive assessment of different biologic functions in cancer cells. This unique information should contribute to making personalized cancer therapy a reality. This paper reviews the non-FDG PET tracers that are most likely to find clinical application, some of them in the near future.
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Larson SM. The Janus Project: The Remaking of Nuclear Medicine and Radiology. J Nucl Med 2011; 52 Suppl 2:3S-9S. [DOI: 10.2967/jnumed.110.085761] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Dondi M, Kashyap R, Paez D, Pascual T, Zaknun J, Bastos FM, Pynda Y. Trends in Nuclear Medicine in Developing Countries. J Nucl Med 2011; 52 Suppl 2:16S-23S. [DOI: 10.2967/jnumed.111.089193] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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