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Verger A, Cecchin D, Guedj E, Albert NL, Brendel M, Fraioli F, Tolboom N, Traub-Weidinger T, Yakushev I, Van Weehaeghe D, Fernandez PA, Garibotto V, Imbert L. EANM perspectives for CZT SPECT in brain applications. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06788-6. [PMID: 38858281 DOI: 10.1007/s00259-024-06788-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Affiliation(s)
- Antoine Verger
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, IADI, INSERM U1254, Allée du Morvan, Nancy, 54500, France.
| | - Diego Cecchin
- Department of Medicine, Unit of Nuclear Medicine, University Hospital of Padova, Padova, Italy
| | - Eric Guedj
- Département de Médecine Nucléaire, Aix Marseille Univ, APHM, CNRS, Centrale Marseille, Institut Fresnel, Hôpital de La Timone, CERIMED, Marseille, France
| | - Nathalie L Albert
- Department of Nuclear Medicine, LMU Hospital, LMU Munich, Munich, Germany
| | - Matthias Brendel
- Department of Nuclear Medicine, LMU Hospital, LMU Munich, Munich, Germany
- German Center for Neurodegenerative Diseases (DZNE) and Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Francesco Fraioli
- Institute of Nuclear Medicine, University College London (UCL), London, UK
| | - Nelleke Tolboom
- Department of Radiology and Nuclear Medicine, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Tatjana Traub-Weidinger
- Department of Diagnostic and Therapeutic Nuclear Medicine, Clinic Donaustadt, Vienna Health Care Group, Vienna, Austria
| | - Igor Yakushev
- Department of Nuclear Medicine, School of Medicine, Klinikum Rechts dr Isar, Technical University of Munich, Munich, Germany
| | - Donatienne Van Weehaeghe
- Department of Radiology and Nuclear Medicine, Ghent University Hospital, C. Heymanslaan 10, Ghent, 9000, Belgium
| | - Pablo Aguiar Fernandez
- CIMUS, Universidade Santiago de Compostela & Nuclear Medicine Department, Univ. Hospital IDIS, Santiago de Compostela, Spain
| | - Valentina Garibotto
- Division of Nuclear Medicine and Molecular Imaging, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, Geneva, 1205, Switzerland
- NIMTLab, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- CIBM Center for Biomedical Imaging, Geneva, Switzerland
| | - Laetitia Imbert
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, IADI, INSERM U1254, Allée du Morvan, Nancy, 54500, France
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Doyen M, Hossu G, Heyer S, Zaragori T, Imbert L, Verger A. Identification of resting-state networks using dynamic brain perfusion SPECT imaging: A fSPECT case report. Front Hum Neurosci 2023; 17:1125765. [PMID: 37151905 PMCID: PMC10157397 DOI: 10.3389/fnhum.2023.1125765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/21/2023] [Indexed: 05/09/2023] Open
Abstract
Connectivity studies with nuclear medicine systems are scarce in literature. They mainly employ PET imaging and group level analyses due to the low temporal resolution of PET and especially SPECT imaging. Our current study analyses connectivity at an individual level using dynamic SPECT imaging, which has been enabled by the improved temporal resolution performances provided by the 360°CZT cameras. We present the case of an 80-year-old man referred for brain perfusion SPECT imaging for cognitive disorders for whom a dynamic SPECT acquisition was performed utilizing a 360°CZT camera (temporal sampling of 15 frames × 3 s, 10 frames × 15 s, 14 frames × 30 s), followed by a conventional static acquisition of 15 m. Functional SPECT connectivity (fSPECT) was assessed through a seed correlation analysis and 5 well-known resting-state networks were identified: the executive, the default mode, the sensory motor, the salience, and the visual networks. This case report supports the feasibility of fSPECT imaging to identify well known resting-state networks, thanks to the novel properties of a 360°CZT camera, and opens the way to the development of more dedicated functional connectivity studies using brain perfusion SPECT imaging.
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Affiliation(s)
- Matthieu Doyen
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, Nancy, France
- IADI, INSERM U1254, Université de Lorraine, Nancy, France
- *Correspondence: Matthieu Doyen,
| | - Gabriela Hossu
- IADI, INSERM U1254, Université de Lorraine, Nancy, France
- CHRU-Nancy, INSERM, CIC, Innovation Technologique, Université de Lorraine, Nancy, France
| | - Sébastien Heyer
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, Nancy, France
| | | | - Laetitia Imbert
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, Nancy, France
- IADI, INSERM U1254, Université de Lorraine, Nancy, France
| | - Antoine Verger
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU Nancy, Université de Lorraine, Nancy, France
- IADI, INSERM U1254, Université de Lorraine, Nancy, France
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Bonnefoy PB, Janvier L, Arede C, Drouet C, Harami D, Marque S, Ahond-Vionnet R. Reduced acquisition time for thallium myocardial perfusion imaging with large field cadmium-zinc-telluride SPECT/CT cameras: An equivalence study. J Nucl Cardiol 2022; 29:1933-1941. [PMID: 33890184 DOI: 10.1007/s12350-021-02611-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/03/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Cadmium-zinc-telluride (CZT) SPECT/CT cameras with large field of view offer a higher sensitivity than conventional Anger cameras. This prospective study aimed to determine the equivalence between a conventional protocol and a reduced acquisition time protocol for 201-Thallium myocardial perfusion imaging (MPI) using a whole-body CZT SPECT camera. METHODS AND RESULTS Stress MPI was obtained for 103 consecutive patients on a DISCOVERY-CZT camera. Images were anonymized and post-processed to simulate a 25% (D75 dataset) and 50% (D50 dataset) decrease in total recorded counts. Concerning the number of segments displaying a tracer uptake < 70% of maximum intensity per patient, equivalence was demonstrated for both count-reduced datasets with a good inter-observer agreement (between 0.90 and 0.88). When comparing the full-vs-D75 datasets and full-vs-D50 datasets, mean difference was 0.06 segment (CI95: [- 0.15;0.27], P < 0.001) and 0.518 segment (CI95: [0.28;0.76], P < 0.001) respectively. Inter-observer agreement was also moderate to good concerning the number of pathological segments (between 0.6 and 0.7) and excellent for functional parameters. CONCLUSION Whole-body CZT SPECT/CT cameras allow to reduce 201-Thallium MPI injected activity or acquisition time by 50% with an equivalence in the number of segments displaying a tracer uptake < 70% of maximum intensity and with a good inter-observer agreement.
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Affiliation(s)
- P B Bonnefoy
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France.
- Service de Médecine Nucléaire, CHU Saint-Etienne - Hôpital Nord, Saint Etienne, France.
- Service de Médecine Nucléaire, CHU de Saint-Etienne, 42055, Saint-Étienne, France.
| | - L Janvier
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France
| | - C Arede
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France
| | - C Drouet
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France
- Service de Médecine Nucléaire, Centre Georges-François Leclerc, Dijon, France
| | - D Harami
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France
| | - S Marque
- Société CAPIONIS, Bordeaux, France
| | - R Ahond-Vionnet
- Service de Médecine Nucléaire, Hôpital Pierre Bérégovoy, Nevers, France
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Zhou Y, Wang S, Wang P, Li N, Wang X, Zheng W. Optimization of image reconstruction method of cerebral blood flow perfusion imaging with digital CZT SPECT. Nucl Med Commun 2022; 43:398-409. [PMID: 35102075 DOI: 10.1097/mnm.0000000000001540] [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: 11/26/2022]
Abstract
PURPOSE The purpose of this study is to evaluate the effects of filtered back projection (FBP), ordered subset expectation maximisation (OSEM), and different filters on cadmium zinc telluride single-photon emission computed tomography [CZT single-photon emission computed tomography (SPECT)] cerebral blood perfusion image quality to optimise the image reconstruction method. METHODS Under routine clinical conditions, tomographic imaging was performed on the phantom and patients. Image processing included image reconstruction using FBP and OSEM, and the filtering method used Butterworth (Bw) and Gaussian (Gs) filters. Visual and semi-quantitative parameters [integral uniformity, root mean square (RMS) noise and contrast and contrast-to-noise ratio (CNR)] were used to evaluate image quality to optimise image reconstruction parameters. One-way and two-way analysis of variance were used to process phantom and clinical data. RESULTS In the tomographic images of the phantom, the semi-quantitative analysis showed that the integral uniformity of FBP+Bw was better than that of OSEM+Bw and OSEM+Gs (P < 0.05), and that the RMS noise of FBP+Bw was lower than that of OSEM+Bw and OSEM+Gs (P < 0.001). The contrast of FBP+Bw and OSEM+Bw in the cold area diameter ≥2 cm group was higher than that of OSEM+Gs (P < 0.001), whereas the CNR of FBP+Bw was higher than that of OSEM+Bw and OSEM+Gs (P < 0.001); the contrast of OSEM+Bw cold area diameter <2 cm was higher than that of FBP+Bw (P < 0.01). The semi-quantitative analysis results of the clinical images were consistent with the phantom's. CONCLUSION In CZT SPECT cerebral blood flow perfusion imaging, it is suggested that the image postprocessing method of FBP+Bw (fc = 0.40; n = 10) should be used routinely in clinical application, and if there are uncertain small lesions in the processed image, it is suggested to use the reconstruction method of OSEM+Bw (EM-equivalent iterations = 60; fc = 0.45; n = 10) instead.
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Affiliation(s)
- Yaqian Zhou
- Department of Nuclear Medicine, Tianjin Medical University General Hospital, Tianjin, China
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Piatkova Y, Payoux P, Boursier C, Bordonne M, Roch V, Marie PY, Hossu G, Imbert L, Verger A. Prospective Paired Comparison of 123I-FP-CIT SPECT Images Obtained With a 360°-CZT and a Conventional Camera. Clin Nucl Med 2022; 47:14-20. [PMID: 34874345 DOI: 10.1097/rlu.0000000000003969] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
PURPOSE This study aimed to compare 123I-FP-CIT SPECT imaging obtained from a 360° cadmium-zinc-telluride (CZT) camera with different focus configurations and from a conventional Anger camera. METHODS This prospective study (NCT03980418) included patients referred to 123I-FP-CIT SPECT imaging who consecutively underwent a 30-minute acquisition on a conventional camera immediately followed by two 15-minute acquisitions on the 360°-CZT camera with, respectively, striatum and brain focus and reconstruction parameters to give equivalent contrast ratios, albeit with higher spatial resolution for the CZT camera. Tomographic count sensitivities were calculated. The images were analyzed through visual, according to 5 independent physicians, and automatic semiquantitative analyses. RESULTS Ninety-two patients were included in this study. The 360°-CZT camera tomographic count sensitivities showed increases of +25% and +18% for striatum and brain focus, respectively, as well as significantly higher quality scores (P ≤ 0.04) in comparison to the conventional camera. The κ scores of consensual visual analysis were 0.80 and 0.85, and correlation coefficients of semiquantitative analysis for striatum uptakes were 0.75 and 0.76 for the comparisons of images obtained with the 2 cameras, with striatum and brain focus, respectively, for the CZT camera. Advanced age was the single predictor of discordant cases (10/92 [11%]) showing systematically abnormal scans with the conventional camera, potentially as a result of partial volume effect. CONCLUSIONS Irrespective of focus mode, this high-sensitivity 360°-CZT camera provides concordant 123I-FP-CIT SPECT results when compared with a conventional camera, but with shorter acquisition times, higher image quality, and few discordant cases possibly explained by its higher spatial resolution.
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Affiliation(s)
- Yuliya Piatkova
- From the Department of Nuclear Medicine and Nancyclotep Imaging Platform, Université de Lorraine, CHRU Nancy, Nancy
| | | | - Caroline Boursier
- From the Department of Nuclear Medicine and Nancyclotep Imaging Platform, Université de Lorraine, CHRU Nancy, Nancy
| | - Manon Bordonne
- From the Department of Nuclear Medicine and Nancyclotep Imaging Platform, Université de Lorraine, CHRU Nancy, Nancy
| | - Veronique Roch
- From the Department of Nuclear Medicine and Nancyclotep Imaging Platform, Université de Lorraine, CHRU Nancy, Nancy
| | | | - Gabriela Hossu
- Université de Lorraine, IADI, INSERM U1254, Nancy, France
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Imbert L, Perrin M, Claudin M, Boursier C, Marie PY. High quality attenuation-corrected myocardial perfusion images may be achieved in patients with morbid obesity using a whole-body CZT camera and a low-dose injection protocol. J Nucl Cardiol 2021; 28:1791-1792. [PMID: 32383086 DOI: 10.1007/s12350-020-02142-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Laetitia Imbert
- Department of Nuclear Medicine, CHRU-Nancy, 54000, Nancy, France.
- Nancyclotep Imaging Platform, CHRU-Nancy, 54000, Nancy, France.
- Université de Lorraine, Inserm, IADI, 54000, Nancy, France.
| | - Mathieu Perrin
- Department of Nuclear Medicine, CHRU-Nancy, 54000, Nancy, France
| | - Marine Claudin
- Department of Nuclear Medicine, CHRU-Nancy, 54000, Nancy, France
| | | | - Pierre-Yves Marie
- Department of Nuclear Medicine, CHRU-Nancy, 54000, Nancy, France
- Université de Lorraine, Inserm, DCAC, 54000, Nancy, France
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Feasibility of 177Lu Therapy Monitoring Using Fast Whole-Body SPECT Recordings Provided by a High-Speed 360° CZT Camera. Clin Nucl Med 2020; 45:e493-e494. [PMID: 32604119 DOI: 10.1097/rlu.0000000000003169] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The whole-body absolute quantification of Lu-DOTATATE therapy was achieved using a high-speed 360° CZT SPECT/CT system. Twelve high-resolution swelling detectors may be positioned close to patients, providing a high-count sensitivity that is particularly advantageous for the low-count rate conditions of Lu imaging. After initially validating Lu quantification on phantom, serial whole-body SPECT/CT acquisitions of only 20 minutes were obtained for a 70-year-old woman treated by Lu-DOTATATE injections for a metastatic recurrence of a pancreatic neuroendocrine tumor. The progressive decrease in tumor uptake between the consecutive Lu-DOTATATE injections could be quantified, and thereby the corresponding dosimetry changes could be estimated.
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Bordonne M, Chawki MB, Marie PY, Zaragori T, Roch V, Grignon R, Imbert L, Verger A. High-quality brain perfusion SPECT images may be achieved with a high-speed recording using 360° CZT camera. EJNMMI Phys 2020; 7:65. [PMID: 33146804 PMCID: PMC7642149 DOI: 10.1186/s40658-020-00334-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/19/2020] [Indexed: 12/11/2022] Open
Abstract
Objective The aim of this study was to compare brain perfusion SPECT obtained from a 360° CZT and a conventional Anger camera. Methods The 360° CZT camera utilizing a brain configuration, with 12 detectors surrounding the head, was compared to a 2-head Anger camera for count sensitivity and image quality on 30-min SPECT recordings from a brain phantom and from 99mTc-HMPAO brain perfusion in 2 groups of 21 patients investigated with the CZT and Anger cameras, respectively. Image reconstruction was adjusted according to image contrast for each camera. Results The CZT camera provided more than 2-fold increase in count sensitivity, as compared with the Anger camera, as well as (1) lower sharpness indexes, giving evidence of higher spatial resolution, for both peripheral/central brain structures, with respective median values of 5.2%/3.7% versus 2.4%/1.9% for CZT and Anger camera respectively in patients (p < 0.01), and 8.0%/6.9% versus 6.2%/3.7% on phantom; and (2) higher gray/white matter contrast on peripheral/central structures, with respective ratio median values of 1.56/1.35 versus 1.11/1.20 for CZT and Anger camera respectively in patients (p < 0.05), and 2.57/2.17 versus 1.40/1.12 on phantom; and (3) no change in noise level. Image quality, scored visually by experienced physicians, was also significantly higher on CZT than on the Anger camera (+ 80%, p < 0.01), and all these results were unchanged on the CZT images obtained with only a 15 min recording time. Conclusion The 360° CZT camera provides brain perfusion images of much higher quality than a conventional Anger camera, even with high-speed recordings, thus demonstrating the potential for repositioning brain perfusion SPECT to the forefront of brain imaging. Supplementary Information The online version contains supplementary material available at 10.1186/s40658-020-00334-7.
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Affiliation(s)
- Manon Bordonne
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Médecine Nucléaire, CHRU-Nancy Brabois, Allée du Morvan, 54500 Vandoeuvre-lès-, Nancy, France
| | - Mohammad B Chawki
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Pierre-Yves Marie
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Université de Lorraine, INSERM, UMR-1116 DCAC, F-54000, Nancy, France
| | | | - Véronique Roch
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Rachel Grignon
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France
| | - Laetitia Imbert
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France. .,Médecine Nucléaire, CHRU-Nancy Brabois, Allée du Morvan, 54500 Vandoeuvre-lès-, Nancy, France. .,Université de Lorraine, INSERM U1254, IADI, F-54000, Nancy, France.
| | - Antoine Verger
- Department of Nuclear Medicine and Nancyclotep Imaging Platform, CHRU-Nancy, Université de Lorraine, F-54000, Nancy, France.,Université de Lorraine, INSERM U1254, IADI, F-54000, Nancy, France
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