Effect of Hemoconcentration on Dural Sinus Computed Tomography Density in a Pediatric Population

Unenhanced brain computed tomography (CT) is inexpensive, easily available, and the first-choice imaging modality for patients presenting with various neurologic symptoms. Venous thrombosis is not rare in childhood, but diagnosis can be difficult. In some cases, only denser vessels can be used to highlight an issue. The aim of this study was to retrospectively evaluate the relationship between X-ray attenuation and hemoconcentration in a pediatric population. This study enrolled 99 pediatric patients who had been referred radiology department for unenhanced brain CT. Images were retrospectively evaluated for measurement of dural sinus densities from four distinct dural sinus locations. Correlation between mean Hounsfield unit (HU) values and hemoglobin/hematocrit (Hb/Htc) levels, as well as age and gender were further analyzed. There was a strong correlation between mean HU and Hb levels ( r  = 0.411; standard deviation: 0.001) and also between mean HU and Htc levels ( r  = 0.393; p