Reliability of transcardiopulmonary thermodilution cardiac output measurement in experimental aortic valve insufficiency.

Background: Monitoring cardiac output (CO) is important to optimize hemodynamic function in critically ill patients. The prevalence of aortic valve insufficiency (AI) is rising in the aging population. However, reliability of CO monitoring techniques in AI is unknown.

Technical note: building a combined cyclotron and MRI facility: implications for interference.

Purpose: With the introduction of hybrid PET∕MRI systems, it has become more likely that the cyclotron and MRI systems will be located close to each other. This study considered the interference between a cyclotron and a superconducting MRI system.

Methods: Interactions between cyclotrons and MRIs are theoretically considered.

Heart-lung interactions measured by electrical impedance tomography.

Objective: The clinical value of stroke volume variations to assess intravascular fluid status in critically ill patients is well known. Electrical impedance tomography is a noninvasive monitoring technology that has been primarily used to assess ventilation. We investigated the potential of electrical impedance tomography to measure left ventricular stroke volume variation as an expression of heart-lung interactions.