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Keelson B, Buzzatti L, Van Gompel G, Scheerlinck T, Hereus S, de Mey J, Cattrysse E, Vandemeulebroucke J, Buls N. The use of cardiac CT acquisition mode for dynamic musculoskeletal imaging. Phys Med 2022; 104:75-84. [PMID: 36370606 DOI: 10.1016/j.ejmp.2022.10.028] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 09/30/2022] [Accepted: 10/31/2022] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES To quantitatively evaluate the impact of a cardiac acquisition CT mode on motion artifacts in comparison to a conventional cine mode for dynamic musculoskeletal (MSK) imaging. METHODS A rotating PMMA phantom with air-filled holes drilled at varying distances from the disk center corresponding to linear hole speeds of 0.75 cm/s, 2.0 cm/s, and 3.6 cm/s was designed. Dynamic scans were obtained in cardiac and cine modes while the phantom was rotating at 48°/s in the CT scanner. An automated workflow to compute the Jaccard distance (JD) was established to quantify degree of motion artifacts in the reconstructed phantom images. JD values between the cardiac and cine scan modes were compared using a paired sample t-test. In addition, three healthy volunteers were scanned with both modes during a cyclic flexion-extension motion of the knee and analysed using the proposed metric. RESULTS For all hole sizes and speeds, the cardiac scan mode had significantly lower (p-value <0.001) JD values. (0.39 [0.32-0.46]) i.e less motion artifacts in comparison to the cine mode (0.72 [0.68-0.76]). For both modes, a progressive increase in JD was also observed as the linear speed of the holes increased from 0.75 cm/s to 3.6 cm/s. The dynamic images of the three healthy volunteers showed less artifacts when scanned in cardiac mode compared to cine mode, and this was quantitatively confirmed by the JD values. CONCLUSIONS A cardiac scan mode could be used to study dynamic musculoskeletal phenomena especially of fast-moving joints since it significantly minimized motion artifacts.
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Affiliation(s)
- Benyameen Keelson
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussels (UZB), Department of radiology, Laarbeeklaan 101, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Electronics and Informatics (ETRO), Pleinlaan 9, 1050 Brussels, Belgium; IMEC, Kapeldreef 75, B-3002 Leuven, Belgium.
| | - Luca Buzzatti
- Vrije Universiteit Brussel (VUB) Department of Physiotherapy, Human Physiology and Anatomy, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Gert Van Gompel
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussels (UZB), Department of radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Thierry Scheerlinck
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Orthopaedic Surgery and Traumatology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Savanah Hereus
- Vrije Universiteit Brussel (VUB) Department of Physiotherapy, Human Physiology and Anatomy, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Johan de Mey
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussels (UZB), Department of radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Erik Cattrysse
- Vrije Universiteit Brussel (VUB) Department of Physiotherapy, Human Physiology and Anatomy, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Jef Vandemeulebroucke
- Vrije Universiteit Brussel (VUB), Department of Electronics and Informatics (ETRO), Pleinlaan 9, 1050 Brussels, Belgium; IMEC, Kapeldreef 75, B-3002 Leuven, Belgium
| | - Nico Buls
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussels (UZB), Department of radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
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