Sometimes we may not get the diagnosis, but we may rule out that something else might not be going on. So sometimes, those normal results are just as important as the abnormal results, and that can be hard to realize or remember when you're paying for that test. But the test can give us information on both sides of it. We may consider advanced imaging, which I call the CT or the MRI. We may refer you to a specialist if we haven't found the answer or test the response to treatment. In that case, we can have a set of differentials that we think are possible. We treat for that and see the response to treatment to see if your pet gets better. Sometimes you have to do that because there's a financial issue that makes that the only choice for the owner, where more testing or even referral may not be an option.

When I think about baseline, I think about "normal." So if we have baseline radiographs or x-rays, we know what your cat's "normal" is. If they come in with a problem later, we can compare what your cat was six months ago to where we are now. That might also reflect progression. Even if they're not necessarily "normal" images, we can see the progression of the disease to determine the severity of the prognosis. We can do that with echocardiograms for cats' hearts as well to see if they're getting worse.

Even if we don't necessarily find the problem, it can rule out problems. I think that it's a very good tool to use, and it's one of many that we can use to find out what might be wrong because the patients that come in don't always tell us what's going on. They hide things, as Kyle alluded to before. That can help us to determine the problem.

It helps us to determine whether there are fractures or bone issues. X-rays are a little better for lung concerns because ultrasound waves don't go through air in the lung. So x-rays are better for looking at respiratory or pulmonary issues. We can get the bigger picture of the whole cat or cat.

Specifically for ultrasounds, if we're looking at the abdomen, we're often looking at the internal organs themselves, and if we're looking for a possible mass or a problem with the function of the organ. We use it a lot for the bladder to look for why a cat may be urinating inappropriately. We may also use it to collect samples. We will use ultrasound if we're trying to collect urine. X-rays would be better for orthopedic reasons or even just looking at the whole cat. We could look at the chest and the abdomen and zero in if we're not sure where that problem is.