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Shiiba T, Watanabe M. Stability of radiomic features from positron emission tomography images: a phantom study comparing advanced reconstruction algorithms and ordered subset expectation maximization. Phys Eng Sci Med 2024:10.1007/s13246-024-01416-x. [PMID: 38625624 DOI: 10.1007/s13246-024-01416-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 03/18/2024] [Indexed: 04/17/2024]
Abstract
In this study, we compared the repeatability and reproducibility of radiomic features obtained from positron emission tomography (PET) images according to the reconstruction algorithm used-advanced reconstruction algorithms, such as HYPER iterative (IT), HYPER deep learning reconstruction (DLR), and HYPER deep progressive reconstruction (DPR), or traditional Ordered Subset Expectation Maximization (OSEM)-to understand the potential variations and implications of using advanced reconstruction techniques in PET-based radiomics. We used a heterogeneous phantom with acrylic spherical beads (4- or 8-mm diameter) filled with 18F. PET images were acquired and reconstructed using OSEM, IT, DLR, and DPR. Original and wavelet radiomic features were calculated using SlicerRadiomics. Radiomic feature repeatability was assessed using the Coefficient of Variance (COV) and intraclass correlation coefficient (ICC), and inter-acquisition time reproducibility was assessed using the concordance correlation coefficient (CCC). For the 4- and 8-mm diameter beads phantom, the proportion of radiomic features with a COV < 10% was equivocal or higher for the advanced reconstruction algorithm than for OSEM. ICC indicated that advanced methods generally outperformed OSEM in repeatability, except for the original features of the 8-mm beads phantom. In the inter-acquisition time reproducibility analysis, the combinations of 3 and 5 min exhibited the highest reproducibility in both phantoms, with IT and DPR showing the highest proportion of radiomic features with CCC > 0.8. Advanced reconstruction methods provided enhanced stability of radiomic features compared with OSEM, suggesting their potential for optimal image reconstruction in PET-based radiomics, offering potential benefits in clinical diagnostics and prognostics.
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Affiliation(s)
- Takuro Shiiba
- Department of Molecular Imaging, Clinical and Educational Collaboration Unit, School of Medical Sciences, Fujita Health University, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan.
| | - Masanori Watanabe
- Department of Radiology, Fujita Health University Hospital, 1-98, Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, 470-1192, Japan
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Alyamany R, El Fakih R, Alnughmush A, Albabtain A, Kharfan-Dabaja MA, Aljurf M. A comprehensive review of the role of bone marrow biopsy and PET-CT in the evaluation of bone marrow involvement in adults newly diagnosed with DLBCL. Front Oncol 2024; 14:1301979. [PMID: 38577334 PMCID: PMC10991722 DOI: 10.3389/fonc.2024.1301979] [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: 09/25/2023] [Accepted: 03/12/2024] [Indexed: 04/06/2024] Open
Abstract
Diffuse large B cell lymphoma (DLBCL) is one of the most prevalent subtypes of non-Hodgkin lymphoma (NHL) and is known for commonly infiltrating extra-nodal sites. The involvement of the bone marrow by lymphoma cells significantly impacts the staging, treatment, and prognosis among the extra-nodal sites in DLBCL. Bone marrow biopsy has been considered the standard diagnostic procedure for detecting bone marrow involvement. However, advancements in imaging techniques, such as positron emission tomography-computed tomography (PET-CT), have shown an improved ability to detect bone marrow involvement, making the need for bone marrow biopsy debatable. This review aims to emphasize the importance of bone marrow evaluation in adult patients newly diagnosed with DLBCL and suggest an optimal diagnostic approach to identify bone marrow involvement in these patients.
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Affiliation(s)
- Ruah Alyamany
- Department of Hematology, Stem Cell Transplant and Cellular Therapy, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Riad El Fakih
- Department of Hematology, Stem Cell Transplant and Cellular Therapy, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Ahmed Alnughmush
- Department of Hematology, Stem Cell Transplant and Cellular Therapy, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Abdulwahab Albabtain
- Department of Hematology, Stem Cell Transplant and Cellular Therapy, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Mohamed A. Kharfan-Dabaja
- Division of Hematology-Oncology, Blood and Marrow Transplantation Program, Mayo Clinic, Jacksonville, FL, United States
| | - Mahmoud Aljurf
- Department of Hematology, Stem Cell Transplant and Cellular Therapy, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
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Liu J, Ren S, Wang R, Mirian N, Tsai YJ, Kulon M, Pucar D, Chen MK, Liu C. Virtual high-count PET image generation using a deep learning method. Med Phys 2022; 49:5830-5840. [PMID: 35880541 PMCID: PMC9474624 DOI: 10.1002/mp.15867] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 06/07/2022] [Accepted: 07/18/2022] [Indexed: 11/10/2022] Open
Abstract
PURPOSE Recently, deep learning-based methods have been established to denoise the low-count positron emission tomography (PET) images and predict their standard-count image counterparts, which could achieve reduction of injected dosage and scan time, and improve image quality for equivalent lesion detectability and clinical diagnosis. In clinical settings, the majority scans are still acquired using standard injection dose with standard scan time. In this work, we applied a 3D U-Net network to reduce the noise of standard-count PET images to obtain the virtual-high-count (VHC) PET images for identifying the potential benefits of the obtained VHC PET images. METHODS The training datasets, including down-sampled standard-count PET images as the network input and high-count images as the desired network output, were derived from 27 whole-body PET datasets, which were acquired using 90-min dynamic scan. The down-sampled standard-count PET images were rebinned with matched noise level of 195 clinical static PET datasets, by matching the normalized standard derivation (NSTD) inside 3D liver region of interests (ROIs). Cross-validation was performed on 27 PET datasets. Normalized mean square error (NMSE), peak signal to noise ratio (PSNR), structural similarity index (SSIM), and standard uptake value (SUV) bias of lesions were used for evaluation on standard-count and VHC PET images, with real-high-count PET image of 90 min as the gold standard. In addition, the network trained with 27 dynamic PET datasets was applied to 195 clinical static datasets to obtain VHC PET images. The NSTD and mean/max SUV of hypermetabolic lesions in standard-count and VHC PET images were evaluated. Three experienced nuclear medicine physicians evaluated the overall image quality of randomly selected 50 out of 195 patients' standard-count and VHC images and conducted 5-score ranking. A Wilcoxon signed-rank test was used to compare differences in the grading of standard-count and VHC images. RESULTS The cross-validation results showed that VHC PET images had improved quantitative metrics scores than the standard-count PET images. The mean/max SUVs of 35 lesions in the standard-count and true-high-count PET images did not show significantly statistical difference. Similarly, the mean/max SUVs of VHC and true-high-count PET images did not show significantly statistical difference. For the 195 clinical data, the VHC PET images had a significantly lower NSTD than the standard-count images. The mean/max SUVs of 215 hypermetabolic lesions in the VHC and standard-count images showed no statistically significant difference. In the image quality evaluation by three experienced nuclear medicine physicians, standard-count images and VHC images received scores with mean and standard deviation of 3.34±0.80 and 4.26 ± 0.72 from Physician 1, 3.02 ± 0.87 and 3.96 ± 0.73 from Physician 2, and 3.74 ± 1.10 and 4.58 ± 0.57 from Physician 3, respectively. The VHC images were consistently ranked higher than the standard-count images. The Wilcoxon signed-rank test also indicated that the image quality evaluation between standard-count and VHC images had significant difference. CONCLUSIONS A DL method was proposed to convert the standard-count images to the VHC images. The VHC images had reduced noise level. No significant difference in mean/max SUV to the standard-count images was observed. VHC images improved image quality for better lesion detectability and clinical diagnosis.
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Affiliation(s)
- Juan Liu
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Sijin Ren
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Rui Wang
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
- Department of Engineering Physics, Tsinghua University, Beijing, 100084, China
| | - Niloufarsadat Mirian
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Yu-Jung Tsai
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Michal Kulon
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Darko Pucar
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Ming-Kai Chen
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
| | - Chi Liu
- Department of Radiology and Biomedical Imaging, Yale University, New Haven, 06520, USA
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Purohit A, Radeke H, Azure M, Hanson K, Benetti R, Su F, Yalamanchili P, Yu M, Hayes M, Guaraldi M, Kagan M, Robinson S, Casebier D. Synthesis and Biological Evaluation of Pyridazinone Analogues as Potential Cardiac Positron Emission Tomography Tracers. J Med Chem 2008; 51:2954-70. [DOI: 10.1021/jm701443n] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ajay Purohit
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Heike Radeke
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Michael Azure
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Kelley Hanson
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Richard Benetti
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Fran Su
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Padmaja Yalamanchili
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Ming Yu
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Megan Hayes
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Mary Guaraldi
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Mikhail Kagan
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - Simon Robinson
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
| | - David Casebier
- Research and Development, Bristol-Myers Squibb Medical Imaging, 331 Treble Cove Road, North Billerica, Massachusetts 01862, Boston University Medical School, 715 Albany Street, Boston, Massachusetts 02118, Lexicon Pharmaceuticals Inc., 350 Carter Road, Princeton, New York 08540
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