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Machado MAD, Moraes TF, Anjos BHL, Alencar NRG, Chang TMC, Santana BCRF, Menezes VO, Vieira LO, Brandão SCS, Salvino MA, Netto EM. Association between increased Subcutaneous Adipose Tissue Radiodensity and cancer mortality: Automated computation, comparison of cancer types, gender, and scanner bias. Appl Radiat Isot 2024; 205:111181. [PMID: 38244325 DOI: 10.1016/j.apradiso.2024.111181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 12/17/2023] [Accepted: 01/04/2024] [Indexed: 01/22/2024]
Abstract
PURPOSE Body composition analysis using computed tomography (CT) is proposed as a predictor of cancer mortality. An association between subcutaneous adipose tissue radiodensity (SATr) and cancer-specific mortality was established, while gender effects and equipment bias were estimated. METHODS 7,475 CT studies were selected from 17 cohorts containing CT images of untreated cancer patients who underwent follow-up for a period of 2.1-118.8 months. SATr measures were collected from published data (n = 6,718) or calculated according to CT images using a deep-learning network (n = 757). The association between SATr and mortality was ascertained for each cohort and gender using the p-value from either logistic regression or ROC analysis. The Kruskal-Wallis test was used to analyze differences between gender distributions, and automatic segmentation was evaluated using the Dice score and five-point Likert quality scale. Gender effect, scanner bias and changes in the Hounsfield unit (HU) to detect hazards were also estimated. RESULTS Higher SATr was associated with mortality in eight cancer types (p < 0.05). Automatic segmentation produced a score of 0.949 while the quality scale measurement was good to excellent. The extent of gender effect was 5.2 HU while the scanner bias was 10.3 HU. The minimum proposed HU change to detect a patient at risk of death was between 5.6 and 8.3 HU. CONCLUSIONS CT imaging provides valuable assessments of body composition as part of the staging process for several cancer types, saving both time and cost. Gender specific scales and scanner bias adjustments should be carried out to successfully implement SATr measures in clinical practice.
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Affiliation(s)
- Marcos A D Machado
- Department of Radiology, Complexo Hospitalar Universitário Prof. Edgard Santos/ Ebserh, Universidade Federal da Bahia, Salvador, Bahia, Zip code: 40.110-040, Brazil; Nuclear Medicine Department, São Rafael Hospital/ Rededor, Salvador, Bahia, Zip code: 41.253-190, Brazil; Nuclearis Corporation, Recife, Pernambuco, Zip code: 50.030-200, Brazil.
| | - Thauan F Moraes
- Northeast Center for Strategic Technologies, Universidade Federal de Pernambuco, Recife, Pernambuco, Zip code: 50.740-545, Brazil
| | - Bruno H L Anjos
- Nuclearis Corporation, Recife, Pernambuco, Zip code: 50.030-200, Brazil
| | - Nadja R G Alencar
- Radiology and Nuclear Medicine Department, Hospital das Clínicas, Federal University of Pernambuco, Recife, Pernambuco, Zip code: 50.670-901, Brazil
| | - Tien-Man C Chang
- Nuclear Medicine Department, Instituto de Medicina Integrada Fernandes Figueira, Recife, Pernambuco, Zip code: 50.070-902, Brazil
| | - Bruno C R F Santana
- Nuclear Medicine Department, São Rafael Hospital/ Rededor, Salvador, Bahia, Zip code: 41.253-190, Brazil
| | - Vinicius O Menezes
- Nuclear Medicine Department, São Rafael Hospital/ Rededor, Salvador, Bahia, Zip code: 41.253-190, Brazil; Nuclearis Corporation, Recife, Pernambuco, Zip code: 50.030-200, Brazil; Radiology and Nuclear Medicine Department, Hospital das Clínicas, Federal University of Pernambuco/ Ebserh, Recife, Pernambuco, Zip code: 50.670-901, Brazil
| | - Lucas O Vieira
- Nuclear Medicine Department, São Rafael Hospital/ Rededor, Salvador, Bahia, Zip code: 41.253-190, Brazil
| | - Simone C S Brandão
- Radiology and Nuclear Medicine Department, Hospital das Clínicas, Federal University of Pernambuco, Recife, Pernambuco, Zip code: 50.670-901, Brazil
| | - Marco A Salvino
- Complexo Hospitalar Universitário Prof. Edgard Santos/ Ebserh, Universidade Federal da Bahia, Salvador, Bahia, Zip code: 40.110-040, Brazil; Hemathology Department, São Rafael Hospital, Salvador, Bahia, Zip code: 41.253-190, Brazil
| | - Eduardo M Netto
- Infectious Disease Research Laboratory, Complexo Hospitalar Universitário Prof. Edgard Santos/ Ebserh, Universidade Federal da Bahia, Salvador, Bahia, Zip code: 40.110-040, Brazil
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Menezes VO, Machado MAD, Queiroz CC, Souza SO, d'Errico F, Namías M, Larocca TF, Soares MBP. Optimization of oncological ¹⁸F-FDG PET/CT imaging based on a multiparameter analysis. Med Phys 2016; 43:930-8. [PMID: 26843253 DOI: 10.1118/1.4940354] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE This paper describes a method to achieve consistent clinical image quality in (18)F-FDG scans accounting for patient habitus, dose regimen, image acquisition, and processing techniques. METHODS Oncological PET/CT scan data for 58 subjects were evaluated retrospectively to derive analytical curves that predict image quality. Patient noise equivalent count rate and coefficient of variation (CV) were used as metrics in their analysis. Optimized acquisition protocols were identified and prospectively applied to 179 subjects. RESULTS The adoption of different schemes for three body mass ranges (<60 kg, 60-90 kg, >90 kg) allows improved image quality with both point spread function and ordered-subsets expectation maximization-3D reconstruction methods. The application of this methodology showed that CV improved significantly (p < 0.0001) in clinical practice. CONCLUSIONS Consistent oncological PET/CT image quality on a high-performance scanner was achieved from an analysis of the relations existing between dose regimen, patient habitus, acquisition, and processing techniques. The proposed methodology may be used by PET/CT centers to develop protocols to standardize PET/CT imaging procedures and achieve better patient management and cost-effective operations.
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Affiliation(s)
- Vinicius O Menezes
- Nuclear Medicine Department, São Rafael Hospital, Salvador 41720-375, Brazil and Nuclear Medicine Department, Hospital das Clínicas da Universidade Federal de Pernambuco/Ebserh, Recife 50670-901, Brazil
| | - Marcos A D Machado
- Nuclear Medicine Department, São Rafael Hospital, Salvador 41720-375, Brazil and Nuclear Medicine Department, Hospital das Clínicas da Universidade Federal de Bahia/Ebserh, Salvador 40110-060, Brazil
| | - Cleiton C Queiroz
- Nuclear Medicine Department, São Rafael Hospital, Salvador 41720-375, Brazil and Nuclear Medicine Department, Hospital Universitário Professor Alberto Antunes/Ebserh, Maceió 57072-900, Brazil
| | - Susana O Souza
- Department of Physics, Universidade Federal de Sergipe, São Cristóvão 49100-000, Brazil
| | - Francesco d'Errico
- Department of Diagnostic Radiology, Yale University School of Medicine, New Haven, Connecticut 06520 and School of Engineering, University of Pisa, Pisa 56126, Italy
| | - Mauro Namías
- Fundación Centro Diagnóstico Nuclear, Buenos Aires C1417CVE, Argentina
| | - Ticiana F Larocca
- Centro de Biotecnologia e Terapia Celular, São Rafael Hospital, Salvador 41253-190, Brazil
| | - Milena B P Soares
- Centro de Biotecnologia e Terapia Celular, São Rafael Hospital, Salvador 41253-190, Brazil and Fundação Oswaldo Cruz, Centro de Pesq. Gonçalo Moniz, Salvador 40296-710, Brazil
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