B1. PA Early Systolic notching
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PSX view 에서 Aortic valve 와 PV 가 보이는 view를 잡고 PW doppler 적용
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segmental/subsegmental PE제외 시 민감도, 특이도 모두 90% 이상, AUC 0.96
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Suggests a proximally-located, higher-risk PE
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From a technical perspective, the PV’s opening click on the PA systolic ejection waveform can be a false-positive for ESN
