The Fate of High-Density Lesions on the Non-contrast CT Obtained Immediately After Intra-arterial Thrombolysis in Ischemic Stroke Patients

• DOI: 10.3348/kjr.2006.7.4.221
• Publication Date: 2009-03-30T18:31:38Z
• Authors: Yu Mi Jang; Deok Hee Lee; Ho Sung Kim; Chang Woo Ryu; Jeong Hyun Lee; Choong Gon Choi; Sang Joon Kim; Dae Chul Suh
• Keywords: Hounsfield scale; Stroke; Parenchyma

Hyperdense lesions can frequently be observed on the CT obtained immediately after intra-arterial (IA) thrombolysis, and it is sometimes difficult to differentiate contrast extravasation from hemorrhagic lesions. The purposes of this study are classify hyperdense according their morphologic features track outcome those lesions.Among 94 patients who suffered with anterior circulation ischemic stroke were treated IA 31 revealed procedure. categorized into four types volume, shape, location density: cortical high density (HD), soft HD, metallic HD diffuse HD. follow-up images 3-5 days later in order visualize changes transformation lesions, 18 (58%) showed lesion, six them significant. All (n = 4) spontaneous resolution. Seven 13) resolution, while rest group transformation. Among hemorrhage was significant only two (2/6) did not achieve successful recanalization. 10) resulted transformation; among them, three cases (30%) a maximum value more than 150 HU (Hounsfield unit) subsequently CT. There transformation.The parenchymal thrombolysis exhibited varying they always hemorrhagic. Most benign, although all hemorrhagic, some ultimately found benign.