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Low-frequency asymptotic behaviour of the apparent diffusion coefficient when measured with approximate cosinusoidal gradient waveforms
https://repo.qst.go.jp/records/2002193
https://repo.qst.go.jp/records/2002193e99c375a-bcb6-432d-939a-ac0d93eb75d0
| アイテムタイプ | 会議発表用資料 / Presentation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2025-06-16 | |||||||
| タイトル | ||||||||
| タイトル | Low-frequency asymptotic behaviour of the apparent diffusion coefficient when measured with approximate cosinusoidal gradient waveforms | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6670 | |||||||
| 資源タイプ | conference poster | |||||||
| 著者 |
Ｋｅｒｓｈａｗ Ｊｅｆｆｒｅｙ
× Ｋｅｒｓｈａｗ Ｊｅｆｆｒｅｙ
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| 抄録 | ||||||||
| 内容記述 | Motivation: Existing theory for OGSE-DWI has been developed under the assumption of an ideal cosinusoidal gradient waveform, but it is impossible to implement such a waveform in practice.Goal(s): Investigate how the low-frequency asymptotic behaviour of the ADC is affected when OGSE-DWI measurements are performed with an approximate cosinusoidal waveform.Approach: A theoretical study was performed to derive the asymptotic behaviour of the ADC from first principles for three MPG waveforms.Results: The predicted low-frequency behaviour of the ADC for the CPHS and DS waveforms can clearly differ from that for the ideal cos waveform. Impact: The microstructure of a complex medium can be characterised by measuring the low-frequency limit of the ADC with OGSE-DWI. However, it is important to understand how the limitations of the gradient hardware affect interpretation of the data. | |||||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||||
| 内容記述 | 2025 ISMRM & ISMRT Annual Meeting & Exhibition | |||||||
| 発表年月日 | ||||||||
| 日付 | 2025-05-12 | |||||||
