Introduction: There are several options for cerebrospinal fluid diversion in patients with normal pressure hydrocephalus. Fixed and programmable valves, with or without anti-siphon devices, have been used for ventriculoperitoneal shunts and horizontal-vertical valves for lumboperitoneal shunts. Recently, a horizontal-vertical valve was developed for ventriculoperitoneal shunts and has been demo...

Nuclear medicine is a diverse field with a large number of different studies spanning virtually all organ systems and medical specialties. Many nuclear medicine procedures are performed routinely; others may be performed only rarely, sometimes less than once per year. The infrequent nature of many studies makes it challenging to retain relevant knowledge and skills. This 2-part article provides...

Infrared lock-in thermography not only allows to image local heat sources like shunts in electronic devices like solar cells, but it also can measure currents flowing in certain regions of the device quantitatively in a non-destructive way. After dealing with the physical basics of quantitative lock-in thermography, two types of measurements are described: 1. The quantitative measurement of the...

INTRODUCTION Portosystemic shunts are anomalous vessels that join the portal and systemic venous circulation, allowing most of the portal blood to bypass the liver and enter the systemic circulation and are classified as intrahepatic or extrahepatic. Portosystemic shunting occurs either as a single congenital shunt or as multiple acquired shunts due to chronic portal hypertension. Radiographic ...

Thin-film photovoltaic (PV) modules often suffer from a variety of parasitic resistive losses in transparent conductive oxide (TCO) and absorber layers that significantly affect the module electrical performance. This paper presents the holistic investigation of resistive effects due to TCO lateral sheet resistance and shunts in amorphous-silicon (a-Si) thin-film PV modules by simultaneous use ...

OBJECTIVE The objective of this study was to assess predictors of residual shunts after percutaneous patent foramen ovale (PFO) closure with Amplatzer PFO occluder (AGA Medical Corporation, Golden Valley, MN, USA). METHODS All percutaneous PFO closures, using Amplatzer PFO occluder performed at a tertiary center between May 2002 and August 2006, were reviewed. Follow-up, including saline cont...

Hydrocephalus is an unbalanced condition between the production and absorption of cerebrospinal fluid (CSF). We reported a child with multiloculated hydrocephalus who developed several complications. Our team was challenged to manage his issues during five years follow up. performed multicystic cerebral shunts despite neuroendoscopic evidence.