AJR. American journal of roentgenology
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AJR Am J Roentgenol · Jun 2015
Projected Effects of Radiation-Induced Cancers on Life Expectancy in Patients Undergoing CT Surveillance for Limited-Stage Hodgkin Lymphoma: A Markov Model.
Patients with limited-stage Hodgkin lymphoma (HL) undergo frequent posttreatment surveillance CT examinations, raising concerns about the cumulative magnitude of radiation exposure. The purpose of this study was to project radiation-induced cancer risks relative to competing risks of HL and account for the differential timing of each. ⋯ Given the low rate of radiation-induced cancer deaths associated with CT surveillance, modest CT benefits would justify its use in patients with limited-stage HL.
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AJR Am J Roentgenol · Jun 2015
Incidence of CT Contrast Agent-Induced Nephropathy: Toward a More Accurate Estimation.
Acute kidney injury is common among hospitalized patients and likely leads to inflated reports of the incidence of CT contrast agent-induced nephropathy as a cause of acute kidney injury. For a more accurate estimation, we compared the incidence of acute kidney injury immediately after contrast agent administration and a few days afterward in the same population. We also controlled for a creatinine level increase starting before and continuing after CT, which may be incorrectly associated with the scan itself. ⋯ There appears to be a minimal risk of CT contrast agent-induced nephropathy at mild to moderate levels of renal dysfunction.