Feb 4, 2025 · Contrast phases are terms used to describe different stages of contrast enhancement to blood vessels, following the introduction of a pressure-injected intravenous …

Jan 13, 2025 · The renal mass CT protocol is a multiphasic contrast-enhanced examination for the assessment of renal masses. It is most often comprised of a non-contrast, nephrogenic …

Mar 23, 2023 · The early arterial phase, also known as the early systemic arterial phase, is a contrast-enhanced CT or MRI series, in which the contrast (e.g. iodinated or gadolinium) is still …

Jan 13, 2025 · The late arterial phase, also known as the corticomedullary phase or early venous portal phase, is a contrast-enhanced CT or MRI series, in which there is an optimal …

Jun 28, 2024 · Contrast-enhanced ultrasound has the advantage over contrast-enhanced MRI and CT in patients with contraindications such as renal failure or iodinated contrast allergy.

Jul 23, 2025 · Hepatobiliary MRI contrast agents are specialized contrast agents used to aid diagnosis in MRI. They are separated into three categories: gadolinium-based agents, …

Sep 12, 2025 · The aim is to illustrate the collecting systems, ureters and bladder with intravenous contrast, albeit in a single acquisition as opposed to the multiple and more dynamic traditional …

Mar 29, 2025 · The purpose of contrast in the setting of head imaging is to evaluate the physiological and pathological processes that alter the permeability of the blood-brain barrier …

Jun 28, 2024 · positive contrast agent (abscesses, infectious conditions): as per preparation guide neutral contrast agent (nonacute conditions): 1000 ml water 20-30 min before the scan

Jul 29, 2023 · The triple-phase liver CT protocol is a useful examination in the assessment of focal liver lesions, hypervascular liver metastases and endocrine tumors. It involves a …