Intravascular ultrasound guidance for transjugular intrahepatic portosystemic shunt procedure in a swine model.

A new method is described for guiding hepato-portal venous puncture using a longitudinal side-view intravascular ultrasound (L-IVUS) transducer to assist in the performance of transjugular intrahepatic portosystemic shunt (TIPS) in three Australian swine. Simultaneous L-IVUS with an AcuNav 5-10 MHz 10 Fr transducer (Acuson Corporation, Mountain View, CA, USA) and fluoroscopy guidance was used to image and monitor the hepatic to portal venous puncture, dilatation of the tract, and deployment of the TIPS stent. Flow through the shunt could be demonstrated with both L-IVUS and angiography.

MDCT of acute lower gastrointestinal bleeding.

Objective: We evaluated the use of MDCT in the diagnosis and management of lower gastrointestinal bleeding (hematochezia).

Conclusion: MDCT is proposed as an alternative first-line investigation to locate lower gastrointestinal bleeding before placing the patient under observation or performing embolization or surgery.

Multiplanar reconstructed computed tomography images improves depiction and understanding of the anatomy of the frontal sinus and recess.

Aims: The use of multiplanar reconstructed computed tomography (CT) images of frontal recess and sinuses was assessed with regard to depiction and understanding of anatomy and effect on surgical approach.

Materials And Methods: Three otorhinolaryngologists and one radiologist read CT scans of 43 patients referred for routine paranasal sinus scans. Spiral (helical) CT scans were obtained and coronal and parasagittal reconstructions were imaged.