Contrast enhanced helical computed tomography (CT) of the liver and portal system is routinely performed in @entity1 @entity1 . The purpose of this project is to develop a practical protocol for helical CT portography in the @entity235 . Ten clinically normal @entity235 were initially evaluated to develop a protocol. Using this protocol, ten @entity235 with confirmed @entity5273 ( @entity5273 ) were then evaluated. Each @entity1 was anesthetized, and a test dose of @entity10817 (400 mg I/ml) at 0.55 ml/kg was injected. Serial images were acquired at the level of T12-13 or T13-L1. The time to maximum enhancement of the portal vein was determined. This time period was used as the period between the second injection (2.2 ml/kg) and the start of the helical examination of the cranial abdomen. Delay times for normal @entity235 ranged from 34.5 s-66.0 s (median: 43.5 s) or 1.41 s/kg-4.12 s/kg (median: 2.09 s/kg). For @entity1 with a @entity5273 , the delay times were 16.5-70.5 s (median: 34.5 s) or 1.47-19.17 s/kg (median: 3.39 s/kg). The aorta, caudal vena cava, portal vein, shunt vessels, and their respective branches were well visualized on the CT images. Clinical case results were surgically confirmed. The surgeons reported that the information gained from the CT portography resulted in a subjective decrease in surgical time and degree of dissection necessary compared with similar surgeries performed without angiographic information. We believe that helical CT portography in the @entity235 will be a useful adjunct in the diagnosis of @entity5273 . The use of helical CT portography may allow clinicians to give clients a more accurate prognosis prior to surgery and will allow @entity1 with lesions that are not surgically correctable to avoid a costly and invasive procedure.

Helical computed tomographic portography in ten normal XXXX and ten @entity235 with a portosystemic shunt.

@entity1 :: ('9606', 'Species') :: ['human', 'patients', 'patient'] @entity5273 :: ('MESH:C562830', 'Disease') :: ['PSS', 'portosystemic shunts'] @entity10817 :: ('MESH:D007483', 'Chemical') :: ['sodium iothalamate'] @entity235 :: ('9615', 'Species') :: ['dog', 'dogs']
@entity235 :: (9615,Species) :: ['dogs']
