Liver Blood Flow
Liver Blood Flow - Related Videos
03:38
Developing a Cerebral Blood Flow Atlas for Blood Flow Mapping
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2025
Source: Tan, Z., et al., Construction and Application of Cerebral Functional Region-Based Cerebral Blood Flow Atlas Using Magnetic Resonance Imaging-Arterial Spin Labeling. J. Vis. Exp. (2024).This video demonstrates the method to construct a cerebral blood flow atlas by integrating magnetic resonance imaging or MRI-arterial spin labeling data with segmented brain regions, visualizing blood flow patterns, and quantifying flow levels across functional areas.
01:29
Blood Flow
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2025
Blood is pumped by the heart into the aorta, the largest artery in the body, and then into increasingly smaller arteries, arterioles, and capillaries. The velocity of blood flow decreases with increased cross-sectional blood vessel area. As blood returns to the heart through venules and veins, its velocity increases. The movement of blood is encouraged by smooth muscle in the vessel walls, the movement of skeletal muscle surrounding the vessels, and one-way valves that prevent backflow. Slow...
12:35
In vivo Liver Endocytosis Followed by Purification of Liver Cells by Liver Perfusion
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Cited by 14 •
2011
The study of liver sinusoidal endothelial cells (SECs) must be performed with primary cells obtained from the animal as no cell lines exist. This method relies on liver digestion and differential centrifugation for SEC purification for subsequent culturing and experimentation.
16:19
Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure
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Cited by 5 •
2014
Auxiliary liver transplantation provides a temporary support in acute hepatic failure, until regeneration of the failing liver. The heterotopic auxiliary liver transplantation (HALT) with portal vein arterialization (PVA) renders sufficient liver function. We developed an analogous technique in the rat, to examine the influence of the portal vein arterialization on the morphology and function of the graft.
01:17
Autoregulation of Blood Flow
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2024
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls. Chemical Signaling in Autoregulation Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation.
FAQs
The hepatic artery supplies oxygen-rich blood, whereas the portal vein delivers blood enriched with nutrients. Their separate contributions allow the liver to support both tissue oxygenation and nutrient processing. Because these streams meet within hepatic sinusoids, clinicians must consider both vascular sources when evaluating hepatic perfusion rather than interpreting either supply in isolation.
Mixing in the hepatic sinusoids links incoming blood supplies to the liver’s metabolic and detoxification functions. Blood then passes toward central veins before leaving through the hepatic veins and inferior vena cava. This pathway provides a structural basis for understanding how upstream or downstream vascular changes can alter perfusion and affect liver function.
Changes in liver blood flow can influence more than oxygen delivery. Altered perfusion is relevant to portal hypertension, cirrhosis, and hepatic ischemia, and it may also modify how the liver processes substances. Examining the circulation therefore helps connect vascular abnormalities with disease progression, impaired tissue support, and changes in drug metabolism.
Clinicians assess hepatic perfusion and interpret vascular imaging by tracing how blood enters, traverses, and exits the liver. The dual inflow and venous drainage provide the framework for recognizing abnormal circulation. This evaluation can support assessment of portal hypertension, cirrhosis, hepatic ischemia, and other conditions in which vascular changes affect liver function.
During liver surgery and transplantation, understanding the vessels that supply and drain the organ is essential for evaluating hepatic perfusion. The hepatic artery, portal vein, hepatic veins, and inferior vena cava define the circulation that must be considered when clinicians assess these interventions. This vascular perspective also helps evaluate perfusion in surgical and transplant settings.
The liver’s circulation affects how blood reaches tissue responsible for metabolism and detoxification. If perfusion changes, the handling of drugs may also change, while altered flow can accompany or contribute to disease progression. For clinical interpretation, vascular findings should therefore be considered alongside metabolic function and the underlying liver disorder.