{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,6,25]],"date-time":"2025-06-25T20:26:19Z","timestamp":1750883179511},"reference-count":0,"publisher":"African Journals Online (AJOL)","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Afr H. Sci."],"abstract":"<jats:p>Objective: To investigate the aplication of low contrast agent concentration and low tube voltage in coronary CTA on patientswith high BMI (26kg\/m2&lt;BMI\u226428kg\/m2) and ultra-high BMI (BMI&gt;28kg\/m2).&#x0D;\nMethods: 60 patients with high BMI (26kg\/m2&lt;BMI\u226428kg\/m2) and 60 patients with ultra-high BMI (BMI&gt;28kg\/m2) wererandomly divided into two groups: double low group A (n=30, tube voltage = 70 KV), double low group B (n=30, tube voltage= 70 KV), processed by SAFIRE iterative reconstruction with 270 mgI\/ml contrast agent. Conventional group a (n=30, tubevoltage = 120 KV), conventional group b (n=30, tube voltage = 120 KV), with filtered back projection (FBP) and 370 mg I\/mlcontrast agent. the image excellent index (FOM), the effective radiation dose (ED), mean CT value, signal-to-noise ratio (SNR),and contrast-to-noise ratio(CNR) between corresponding groups were compared.&#x0D;\nResult: There was no significant difference in subjective scores of coronary artery image quality between the two high BMIsubgroups (P&gt;0.05).The ED of group A (1.103\u00b10.101 mSv) was significantly lower than that of group a (4.663\u00b10.412 mSv)(P&lt;0.001).There was no significant difference in mean CT value, SNR and CNR between the two subgroups (P&gt;0.05).The imageexcellent index (FOM) of group A was higher than that of group a (P&lt;0.05).The total iodine content and iodine injectionrate in group A were lower than those in group a (P&lt;0.001).The difference of subjective scores of coronary artery image qualitybetween the two ultra-high subgroups was significant. The mean CT value, SNR and CNR of group B were lower than those ofgroup b (P&lt;0.05). The images of 14 patients in group B could not meet the diagnosis demand.&#x0D;\nConclusion: It is feasible to reduce the tube voltage to 70KV in patients with abdominal BMI with high BMI (26Kg\/m2&lt;BMI\u226428Kg\/m2). For patients with abdominal obesity with ultra-high BMI (BMI&gt;28Kg\/m2), under the same conditions, the70KV can not meet the daily diagnosis requirement.&#x0D;\nKeywords: Radiation dose; tomography; coronary artery; iterative reconstruction; contrast agent; abdominal obesity.<\/jats:p>","DOI":"10.4314\/ahs.v23i3.70","type":"journal-article","created":{"date-parts":[[2023,10,12]],"date-time":"2023-10-12T14:38:44Z","timestamp":1697121524000},"source":"Crossref","is-referenced-by-count":2,"title":["A feasibility study of 70 kV double low-dose coronary imaging technique in abdomen-fatty patients using dual-source CT"],"prefix":"10.4314","volume":"23","author":[{"given":"Lei","family":"Chen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shang","family":"Ge","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuan","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ting-Ting","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ting-Ting","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhao-Huan","family":"Zhu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2895","published-online":{"date-parts":[[2023,10,11]]},"container-title":["African Health Sciences"],"original-title":[],"link":[{"URL":"https:\/\/www.ajol.info\/index.php\/ahs\/article\/download\/257032\/242797","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.ajol.info\/index.php\/ahs\/article\/download\/257032\/242797","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,12]],"date-time":"2023-10-12T14:39:11Z","timestamp":1697121551000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ajol.info\/index.php\/ahs\/article\/view\/257032"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,10,11]]},"references-count":0,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2023,10,11]]}},"URL":"https:\/\/doi.org\/10.4314\/ahs.v23i3.70","relation":{},"ISSN":["1729-0503","1680-6905"],"issn-type":[{"value":"1729-0503","type":"electronic"},{"value":"1680-6905","type":"print"}],"subject":[],"published":{"date-parts":[[2023,10,11]]}}}