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Observation of the obturator artery. (a) Long axis view of a luminal structure (open triangles) is seen at the plane between the pectineus and obturator externus muscles during preprocedure observation using the approach described by Akkaya et al. [35]. (b) The luminal structure was confirmed to be the obturator artery using color flow Doppler. PE, pectineus muscle; OE, obturator externus muscle; SPR, superior pubic ramus.
