{"ok":true,"api":{"name":"SAIMSARA Evidence Object Discovery API","version":"v1"},"mode":"doc_key","editorial_verification":{"status":"human_reviewed","trust_label":"machine_generated_human_reviewed","method":"World ID proof-of-human editorial account","scope":["clinical_integrity","reference_quality","scientific_coherence"],"verification_note":"This Evidence Object is machine-generated and human-reviewed. World ID is used to verify that editorial oversight was submitted by a unique human account.","does_not_mean":"World ID verifies proof-of-human editorial oversight; it does not independently certify the scientific truth of every claim."},"object":{"object_type":"saimsara_evidence_object_metadata","doc_key":"vascular::CAROTID_PSV_SS","issue_slug":"vascular","doc_id":"CAROTID_PSV_SS","title":"Peak Systolic Velocity in Carotid Stenosis","doi":"10.62487/saimsaraa8e14259","doi_url":"https://doi.org/10.62487/saimsaraa8e14259","version":"2026-03-20","source_name":"Semantic Scholar","article_url":"https://saimsara.com/sessions/carotid-stenosis-psv-20260320-135414-a8e14259/","image_url":"","topic_tags":"Carotid stenosis,Peak systolic velocity,Carotid artery,Doppler ultrasound,Stenosis severity,Carotid revascularization,Ischemic stroke,In-stent restenosis,Plaque instability,Hemodynamic assessment","keywords":["Carotid stenosis","Peak systolic velocity","Carotid artery","Doppler ultrasound","Stenosis severity","Carotid revascularization","Ischemic stroke","In-stent restenosis","Plaque instability","Hemodynamic assessment"],"metrics":{"included_all":163,"included_original":153,"reference_index":42,"total_participants":108064},"discover_url":"https://saimsara.com/api/v1/discover.php?doc_key=vascular%3A%3ACAROTID_PSV_SS","paid_evidence_url":"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3ACAROTID_PSV_SS","price":{"amount":"5.00","currency":"USD","units":5,"unit_amount":"1.00"},"payment_methods":["api_key","stripe_checkout","object_grant","x402"],"text_length":7945,"preview":"Results Key finding aligned to the query: Peak systolic velocity (PSV) serves as a critical, albeit complex, hemodynamic parameter in the assessment and management of carotid stenosis, demonstrating utility across diagnosis, prognosis, and post-intervention monitoring. PSV values are significantly correlated with the degree of stenosis and can predict outcomes such as post-stent improvement (r = 0.622; P < 0.01) and in-stent restenosis (aOR 1.004; 95% CI 1.001 to 1.007). However, its interpretation requires careful consideration of influencing factors, including lesion length, sonographic settings, and the presence of high-grade stenosis where PSV may paradoxically decrease. Original researc…","trust_label":"machine_generated_human_reviewed","editorial_verification":{"status":"human_reviewed","trust_label":"machine_generated_human_reviewed","method":"World ID proof-of-human editorial account","scope":["clinical_integrity","reference_quality","scientific_coherence"],"verification_note":"This Evidence Object is machine-generated and human-reviewed. World ID is used to verify that editorial oversight was submitted by a unique human account.","does_not_mean":"World ID verifies proof-of-human editorial oversight; it does not independently certify the scientific truth of every claim."},"checkout":{"method":"POST","url":"https://saimsara.com/create_checkout_session.php","content_type":"application/x-www-form-urlencoded","params":{"plan":"evidence_object","doc_key":"vascular::CAROTID_PSV_SS"},"optional_params":{"customer_email":"user@example.com"},"price":{"amount":"5.00","currency":"USD","units":5,"unit_amount":"1.00"},"curl_example":"curl -X POST https://saimsara.com/create_checkout_session.php -d \"plan=evidence_object\" -d \"doc_key=vascular::CAROTID_PSV_SS\" -d \"customer_email=user@example.com\""},"access_after_payment":{"header":"X-SAIMSARA-Payment-Proof","endpoint":"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3ACAROTID_PSV_SS","curl_example":"curl -H \"X-SAIMSARA-Payment-Proof: YOUR_PAYMENT_PROOF_TOKEN\" \"https://saimsara.com/api/v1/evidence.php?doc_key=vascular%3A%3ACAROTID_PSV_SS\""}}}