{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T20:26:34Z","timestamp":1777926394804,"version":"3.51.4"},"reference-count":0,"publisher":"Pakistan Medical Association","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Pak Med Assoc"],"abstract":"<jats:p>Objectives: To investigate heart size on chest X-ray via cardiothoracic ratio, and to correlate it with echocardiographic measurements.\nMethod: The comparative analytical, cross-sectional study was conducted at the Pakistan Navy Station Shifa Hospital, Karachi, between January 2021 and July 2021. The radiological parameters were measured on chest X-rays posterior-anterior view, and the echocardiographic parameters were measured using 2-dimensional transthoracic echocardiography. The absence or presence of cardiomegaly on both imaging modalities was modelled as a binary categorical variable and compared. \u00a0Data was analysed using SPSS 23.\nResults: Of the 79 participants, 44(55.7%) were males and 35(44.3%) were females. The mean age of the sample was 52.71\u00b114.54 years. There were 28(35.44%) enlarged hearts on chest X-ray and 46(58.22%) on echocardiography. The sensitivity and specificity of chest X-ray were 54.35% and 90.90%, respectively. The positive and negative predictive values were 89.28% and 58.82%, respectively. The accuracy of chest X-ray in identifying an enlarged heart was 69.62%.\nConclusion: The cardiac silhouette on a chest X-ray could demonstrate heart size through simple measurements with high specificity and reasonable accuracy. However, a normal heart size on chest X-ray may not have a normal function.\nKey Words: Heart size, Cardiomegaly, Cardiothoracic ratio, Chest X-ray, PA view, Transthoracic echocardiography.<\/jats:p>","DOI":"10.47391\/jpma.6089","type":"journal-article","created":{"date-parts":[[2023,2,16]],"date-time":"2023-02-16T04:46:12Z","timestamp":1676522772000},"page":"302-306","source":"Crossref","is-referenced-by-count":1,"title":["A morphological study comparing heart size measurement on chest radiograph with echocardiography in local population"],"prefix":"10.47391","volume":"73","author":[{"family":"Ahmed Ali Khan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"family":"Aisha Qamar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"26547","published-online":{"date-parts":[[2023,2,15]]},"container-title":["Journal of the Pakistan Medical Association"],"original-title":[],"link":[{"URL":"https:\/\/ojs.jpma.org.pk\/index.php\/public_html\/article\/download\/6089\/2107","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2023,2,16]],"date-time":"2023-02-16T04:46:13Z","timestamp":1676522773000},"score":1,"resource":{"primary":{"URL":"https:\/\/ojs.jpma.org.pk\/index.php\/public_html\/article\/view\/6089"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,2,15]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2023,1,15]]}},"URL":"https:\/\/doi.org\/10.47391\/jpma.6089","relation":{},"ISSN":["0030-9982"],"issn-type":[{"value":"0030-9982","type":"print"}],"subject":[],"published":{"date-parts":[[2023,2,15]]}}}