Dual-Energy CT After Peri-interventional Subarachnoid Haemorrhage

Abstract

Dual-energy CT allows the discrimination and subtraction of blood and iodine mixed within the subarachnoid spaces in patients with peri-interventional re-SAH. It helps to avoid overestimation of SAH after peri-interventional re-bleeding and therefore is a potentially valuable tool in the assessment of peri-interventional re-SAH.

Residual Thromboembolic Material in Cerebral Arteries after Endovascular Stroke Therapy Can Be Identified by Dual-Energy CT

“…15,18,19 It has been shown that by using a combined evaluation of the VNC and IM series from DECT, sensitivity and specificity for the detection of an underlying contrast-enhancing mass within a cerebral hemorrhage was as high as 94.4% and 97.4%, 17 with positive or negative predictive values up to 95.7% and 94.1%. 30 With regard to the differentiation between hemorrhage and contrast staining in different intracranial compartments, another study even described a sensitivity of 100%, specificity between 84.4% and 100%, and accuracy between 87.2% and 100%, with some limitations in calcified areas.…”

“…12 The main application is for the differentiation between hemorrhagic transformation and contrast staining in the brain after recent intravascular contrast application. [13][14][15][16][17][18][19] After neuroendovascular therapy, important questions regarding possible hemorrhage, swelling, or infarction can be answered reliably with this method. 18 However, this method is also widely applied to differentiate various tissues in other regions of the body.…”

Pilotstudie: Vergleich der Artefakte von Brackets mittels Dual-Energy-CT

“…Diese Methode der Materialdiskriminierung wird inzwischen zur Diagnostik von Pulmonalarterienembolien [11], bei der Perfusionsbildgebung am Herzen [12], zur Gewebedifferenzierung bei Tumorpatienten [13], zum Nachweis von Harnsäureablagerungen bei Gicht [14], zur Differenzierung zwischen zerebralen Blutungen und Kontrastmittelanreicherungen bzw. zugrundeliegenden Gefäßpathologien [15][16][17][18][19] und zur Detektion von Harnsteinen und der Definition ihrer Zusammensetzung angewendet [11,20].…”

Single-exposure dual-energy-subtraction X-ray imaging using a synchrotron source

“…Dual-energy X-ray imaging is one technique which can overcome these limitations. Consequently, some of the applications of dual-energy imaging include bone differentiation on chest X-rays for the purpose of improving tumour diagnosis (Fraser et al, 1986;Kelcz et al, 1994), the diagnosis of cerebral haemorrhage (Brockmann et al, 2010), lung perfusion measurement (Thieme et al, 2008), cardiac imaging (Schwarz et al, 2008), the diagnosis of urinary calculi (Graser et al, 2008) and gout (Choi et al, 2009), and bone and fat density measurement (Sartoris & Resnick, 1989;Jensen et al, 1995).…”