Final answer:
The visualization of blood vessels after injecting radiopaque material is known as an angiogram, enabling detailed X-ray images of the vasculature. MRI contrast agents modify the magnetic properties of water in cells for high-resolution images of soft tissues, while Doppler ultrasounds can show blood flow dynamics.
Step-by-step explanation:
The ray visualization of internal anatomy of blood vessels after a radiopaque material is injected is known as an angiogram. This medical imaging technique is used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins, and the heart chambers. When the radiopaque material, which is typically a type of contrast agent, is injected into the bloodstream, it travels through the vessels and allows for the creation of detailed X-ray images.
In the case of MRI contrast agents, a paramagnetic metal cation in the form of a stable complex is used to alter the magnetic properties of water in cells. Different types of cells respond differently to this change, and as a result, physicians can obtain detailed images of soft tissues, including the complex anatomy of the cardiovascular system.
Other imaging techniques, such as Doppler ultrasounds, can also provide information on blood flow and velocity within vessels, as seen in images where color is used to indicate velocity through a partially occluded artery.