Single-phase bilateral low dose contrast medium injection for diagnosing occlusions of the thoracic venous system: a case report

Abstract

Occlusion of the thoracic venous system and/or occlusion of central venous catheters (CVC) of unknown cause can, in selected cases, require advanced imaging. Here, we describe a case study of a patient with a failing central dialysis catheter (CDC) which was diagnosed by computed tomography (CT) in connection with a single-phase bilateral low-dose contrast medium (CM) injection using only 3.6 g of iodine. By injecting a low CM dose, the risk of streak artifacts from first-pass of high intravascular concentrations of CM can be avoided. Therefore, the technique described here should be beneficial also to patients with normal renal function.

Evaluation of arteriovenous fistula-bilateral computed tomography venography combining diluted and undiluted contrast media injection: A case study

“…The dilution consisted of 5 mL CM (iomeprol 400) dispersed in 100 mL saline. The CM dilution was based on previous clinical experience [7]. In this case study a total dose of 1.1 grams of iodine was used during second injection.…”