{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T03:59:56Z","timestamp":1788926396918,"version":"build-2803163510"},"reference-count":22,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2024,11,12]],"date-time":"2024-11-12T00:00:00Z","timestamp":1731369600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,2,18]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>An injection method called cranial ceiling elevation is performed in Asian countries to reduce facial proportions. Scalp injections carry risks such as arterial embolism or compression, leading to adverse events including scalp necrosis and hair loss.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Objective<\/jats:title>\n                  <jats:p>No arterial studies or injection recommendations exist for the injection of specific scalp regions. We aimed to examine blood vessel types and distributions to identify relatively safe areas for scalp injections.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Computed tomography scans were performed to evaluate the blood vessels in the scalp of 50 cadaver heads, and anatomical studies were performed. Each scalp was divided into 2 segments (L1 and L2) and 6 areas (S1\/S1\u2032\u2212S3\/S3\u2032). The total number of arteries and the probability of each named artery occurring in each section were recorded.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>The total number of arteries in L1 was higher than that in L2 (L1, 78.76 \u00b1 31.07; L2, 75.28 \u00b1 28.68). The most frequently distributed artery in both L1 and L2 was the parietal branch of the superficial temporal artery. No significant difference was observed between the total number of arteries and the number of each named artery in the S1\/S1\u2032\u2013S3\/S3\u2032 segments. Except for S2\u2032 and S3\u2032, the number of named arteries in L1 was higher than that in L2.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Large-volume scalp injections are not recommended. For injections within 30\u00b0 above the ear, it is advisable to inject at L2. For other regions, it is also recommended to inject at L2. The periosteal layer should be selected for injection. The L2 region is preferable for right-sided injections, and the L1 region is recommended for left-sided injections.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/asj\/sjae227","type":"journal-article","created":{"date-parts":[[2024,11,12]],"date-time":"2024-11-12T10:23:57Z","timestamp":1731407037000},"page":"NP79-NP85","source":"Crossref","is-referenced-by-count":3,"title":["Safety Optimization of Injections in Specific Areas of the Scalp: A Cadaveric and 3D-CT Analysis of Arterial 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