ID | 66648 |
Author |
Nakashima, Masahiro
ivision of Radiological Technology, Okayama University Hospital
Yamazaki, Yuta
Canon Medical Systems Corporation
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Abstract | Head holder attenuation affects brain perfusion single-photon emission computed tomography (SPECT) image quality. Here, we proposed a head holder-attenuation correction (AC) method using attenuation coefficient maps calculated by Chang’s method from CT images. Then, we evaluated the effectiveness of the head holder-AC method by numerical phantom and clinical cerebral perfusion SPECT studies. In the numerical phantom, the posterior counts were 10.7% lower than the anterior counts without head holder-AC method. However, by performing head holder-AC, the posterior count recovered by approximately 6.8%, approaching the true value. In the clinical study, the normalized count ratio was significantly increased by performing the head holder-AC method in the posterior-middle cerebral artery, posterior cerebral artery and cerebellum regions. There were no significant increases in other regions. The head holder-AC method can correct the counts attenuated by the head holder.
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Keywords | Attenuation correction
Brain perfusion
Head holder
Single-photon emission computed tomography
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Note | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s12194-024-00778-x
This fulltext file will be available in Feb. 2025.
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Published Date | 2024-02-09
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Publication Title |
Radiological Physics and Technology
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Publisher | Springer Science and Business Media LLC
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ISSN | 1865-0333
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Content Type |
Journal Article
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language |
English
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OAI-PMH Set |
岡山大学
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Copyright Holders | © The Author(s), under exclusive licence to Japanese Society of Radiological Technology and Japan Society of Medical Physics 2024
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File Version | publisher
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PubMed ID | |
DOI | |
Web of Science KeyUT | |
Related Url | isVersionOf https://doi.org/10.1007/s12194-024-00778-x
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Citation | Nakashima, M., Yamazaki, Y. Evaluation of attenuation correction method for head holder in brain perfusion single-photon emission computed tomography. Radiol Phys Technol (2024). https://doi.org/10.1007/s12194-024-00778-x
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