2024年9月30日 · Alterations in the normal hepatic vein waveform may reveal or confirm abnormalities in the heart or liver. The shape of the hepatic vein spectral Doppler waveform is primarily determined by pressure changes in the right atrium, or more exactly the blood flow resulting from the resultant pressure gradients.

2019年12月30日 · This chapter reviews the normal hemodynamics of the liver and then considers the sonographic assessment of portal hypertension, portal vein obstruction, hepatic vein obstruction, transjugular intrahepatic portosystemic shunts (TIPS), and hepatic artery injury.

2023年8月13日 · Doppler liver ultrasonography constitutes an effective and non-invasive means of evaluating the hepatic vasculature. Understanding the normal and abnormal waveforms for the primary hepatic vessels and their characteristic waveforms can help diagnose specific diseases that have a characteristic effect on these waveform patterns.

2016年3月5日 · Therefore, Doppler sonography is frequently the first modality used to evaluate patients with suspected hepatic vascular disorders. This chapter reviews the normal hemodynamics of the liver and the sonographic assessment of portal hypertension, portal vein obstruction, hepatic vein obstruction, and intrahepatic portosystemic shunts.

The hepatic veins appear in ultrasound as thin-walled tubular anechoic structures enclosed by hepatic parenchyma. They are best approached by a right subcostal oblique view, allowing a good visualization of the hepatic veins lengthwise and their confluence with the IVC.

2011年1月19日 · Doppler ultrasonography (US) is usually the first-line modality for evaluating flow in native liver vessels and transjugular intrahepatic portosystemic shunts (TIPS). Waveforms, which represent flow in each of the major vessels and in TIPS, have been well described.

2009年11月1日 · Duplex Doppler sonography is a fundamental component of the complete ultrasonographic examination of the liver. Accurate interpretation of the spectral Doppler tracing from the hepatic veins is valuable, as it reflects important cardiac and hepatic physiology.

We present a series of cases illustrating characteristic HV flow patterns associated with various cardiovascular and related disorders (Figures 1, 2, 3, 4, 5, and 6, Video 1). The requirements for optimal recording of the hepatic vein Doppler are listed in Table 1. Figure 1. HV Anatomy and Normal Flow Profile. (A) Anatomy of hepatic veins (HVs).

tations of both normally func-tioning and mal-functioning TIPS. Doppler ultrasonography (US) is usually the first-line modality for evaluat-ing flow in native liver v. ssels and transjugular intrahepatic portosystemic shunts (TIPS). Waveforms, which represent flow in .

A wave - atrial contraction causes retrograde flow back to liver, then rapid RV filling S wave - ventricular systole, antegrade flow into right atrium against closed TV V wave - opening of tricuspid, followed by rush of antegrade flow D wave - ventricular diastole, antegrade flow into RV