An expansion of the first cause argument is the Kalam cosmological argument, which also requires creatio ex nihilo: 1  Everything that begins to exist has a cause. 2  The universe began to exist. 3  Therefore, the universe has a cause.
A diagnostic test may be performed to detect and diagnose health problems. These tests can be useful in finding diseases and tracking their progression. There are many kinds of diagnostic tests. CT scans, PET scans, MRIs, ultrasound and blood tests are some of the different types. A computed tomography (CT) scan is a diagnostic imaging tool. They create cross-sectional pictures of the body using computer and X-ray technology.
Tests include: 1  Blood gas tests. 2  Blood tests. 3  Imaging test of the heart called an echocardiogram. 4  Endoscopy, which uses a tiny camera attached to a thin tube to look inside your body.