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. 2026 Jun 19;19:610083. doi: 10.2147/LRA.S610083

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© 2026 Chooklin and Chuklin.

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Grayscale radiograph: two views with psoas muscle and iohexol labeled. — Radiographic image of iohexol distribution after rectus sheath block. The distribution of iohexol extends over the lumbar muscles during rectus sheath block (Reproduced from Onishi et al²³ © Springer Nature. Published with permission under STM Permissions Guidelines).