ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Transjugular intrahepatic portosystemic shunts are becoming an increasingly popular technique for the treatment of portal hypertension and its complications. However, to maintain patency, revisions are periodically required to treat stenosis and thrombosis. At many centers, Doppler sonography is used for routine follow-up. A variety of hemodynamic parameters, including main portal vein velocity, maximum stent velocity, minimum stent velocity, velocity gradient in the stent, temporal changes in stent velocity, flow direction in the intrahepatic portal and hepatic veins, and pulsatility of flow in the stent can be used. Many studies have confirmed that Doppler sonography is a valuable, noninvasive means of detecting stent malfunction, although the criteria vary somewhat at different institutions.

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Liver transplantation is performed in adults and children to treat patients with irreversible liver damage when medical or other surgical treatment has failed. The most common indications for transplantation are cirrhosis secondary to fulminant acute hepatitis or chronic active hepatitis, sclerosing cholangitis, primary biliary cirrhosis, Budd–Chiari syndrome, inborn errors of metabolism, and unresectable but local hepatocellular carcinoma. This article reviews the sonographic findings in the preoperative evaluation of liver transplant recipients, briefly describes the surgical technique, and demonstrates normal postoperative findings in liver transplant recipients as well as complications associated with liver transplantation.

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Ultrasound is the most valuable imaging modality in evaluating the premenopausal female presenting with acute pelvic pain. The appropriate interpretation of the ultrasound study requires correlation with the patient's clinical history and laboratory values. This is especially true of the serum beta-hCG, where ultrasound relies on this test to make the diagnosis of ectopic pregnancy. When the serum test for pregnancy is negative and the patient has an adnexal mass this could be secondary to a complicated ovarian cyst (hemorrhage, rupture), ovarian torsion or pelvic inflammatory disease. The ultrasound image can usually make the diagnosis in conjunction with the clinical papameters, however, this is most difficult in patients with ovarian torsion.

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:0894-8771    

出版商:OVID    

年代:2003

数据来源: OVID