Category: Diagnostic imaging

The fluorescence lifetime of fluorescein is an incredibly brief 3–4 nanoseconds, while its pharmacological life within the body stretches across days. This significant difference is key to understanding this versatile molecule's dual nature and what is the lifetime of fluorescein in different contexts.

Fluorescein is an indispensable diagnostic dye, used widely in procedures like retinal angiography, where it can appear in the central retinal artery within 7 to 14 seconds of intravenous injection. Yet, answering the question of what is the half life of fluorescein is more complex than providing a single number, as its clearance involves a biphasic process with distinct elimination rates for both the parent drug and its primary metabolite.

Regadenoson is eliminated from the body in a triphasic manner, meaning it undergoes three distinct half-life phases before being fully cleared from your system. This prolonged, multi-phase process is crucial to understanding precisely how long does regadenoson stay in your system, well after its immediate effects have worn off.

Over a hundred years of clinical experience with barium sulfate confirms that it is biologically inert and has very low systemic absorption. However, while it does not cause chemical-based drug interactions, the physical presence of barium can significantly interfere with how your body absorbs other orally administered medications.

Used extensively in modern diagnostic medicine, Omnipaque (iohexol) is an iodinated contrast agent designed to enhance the visibility of internal body structures during medical imaging. In fact, it is relied upon by radiologists and physicians worldwide to improve the clarity of images from a variety of scans, leading to more accurate diagnoses.

Adverse reactions to Fludeoxyglucose F 18 (FDG) are uncommon, with severe allergic reactions being very rare. It is important to know what are the side effects of FDG to feel prepared and confident before your positron emission tomography (PET) scan.

The term 'medical CT Plus' can be confusing because it does not refer to a single medical product, procedure, or device. Instead, the meaning of **what is medical CT Plus used for?** depends entirely on the specific context, referring to different branded medications, medical imaging systems, or even the use of contrast material in a standard CT scan.

In 2017, the FDA approved Tagitol V as the first dedicated fecal tagging agent for computed tomography (CT) colonography. What is Tagitol and how does this contrast agent aid in a virtual colonoscopy? This oral suspension, containing barium sulfate, is a vital tool for diagnostic imaging, helping physicians differentiate between retained stool and actual colon abnormalities.

Raclopride, a selective dopamine D2/D3 antagonist, is not typically used as a therapeutic medication but is instead a crucial radiotracer for medical research and diagnostic imaging. What is the drug raclopride used for in these specialized applications, and how does it help scientists understand brain function?

While most people undergo an MRI without any medication, millions of patients receive specific drugs to ensure the procedure is successful. Understanding what drug do they give you before an MRI depends on whether the goal is to manage anxiety or to enhance the diagnostic images.