Use of Electrical Impedence to Measure Lean Body Weight as a Determinant of the Dose of Contrast Media for Abdominal CT
Status:
Completed
Trial end date:
2014-07-01
Target enrollment:
Participant gender:
Summary
There are several different methods that can be used to determine the dose of iodinated
contrast material for a CT scan. These include a standard fixed dose, a dose based on total
body weight, a dose based on body mass index, a dose based on lean body weight, and a dose
based on estimated lean body weight. The fixed dose method uses a predetermined amount of
contrast material for all patients having a CT scan of the abdomen regardless of size. This
is the standard procedure currently used at Duke. The other methods use the patient's weight,
either the total body weight or lean body weight, to determine the amount of contrast
necessary for the CT exam. For this study, the investigators will use the fixed dose, total
body weight, the lean body weight, and estimated lean body weight methods. The purpose of
this study is to evaluate these five methods of determining the IV contrast volume and which
may be best for abdominal CT scanning.