What is the optimal protocol to evaluate the canine intestinal tract with CT?

Investigation of scan delays for CT evaluation of inner wall layering and peak enhancement of the canine stomach and small intestine using a 20 second fixed-injection-duration and bolus tracking technique

Jia Wen Siow, Jennifer Chau, Juan M. Podadera, Mariano Makara

The study aimed to identify the optimal scan delays for detecting contrast-enhancing inner wall layering and peak enhancement of the stomach and small intestine in dogs using a 20 s fixed-injection-duration and bolus tracking technique. The study used a retrospective and prospective design, and included client-owned dogs with normal gastrointestinal tract. The study excluded dogs with clinical signs of disease or abnormal imaging features. The study recorded the scan delays for each patient, and assessed the presence and timing of inner wall layering and peak enhancement using postcontrast CT series. The study found that the scan delays for peak detection were 10 and 15 s for the small intestine, and 40 s for the stomach. The study concluded that the scan delays of 10–15 s and 40 s may be suitable for evaluation of the canine gastrointestinal tract using this technique.

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