Virtopsy: postmortem minimally invasive angiography using cross section techniques--implementation and preliminary results

Postmortem investigation is increasingly supported by Computed Tomography (CT) and Magnetic Resonance Imaging (MRI). This led to the idea to implement a noninvasive or minimally invasive autopsy technique. Therefore, a minimally invasive angiography technique becomes necessary, in order to support the vascular cross section diagnostic. Preliminary experiments investigating different contrast agents for CT and MRI and their postmortem applicability have been performed using an ex-vivo porcine coronary model. MSCT and MRI angiography was performed in the porcine model. Three human corpses were investigated using minimally invasive MSCT angiography. Via the right femoral artery a plastic tube was advanced into the aortic arch. Using a flow adjustable pump the radiopaque contrast agent meglumine-ioxithalamate was injected. Subsequent MSCT scanning provided an excellent anatomic visualization of the human arterial system including intracranial and coronary arteries. Vascular pathologies such as calcification, stenosis and injury were detected. Limitations of the introduced approach are cases of major vessel injury and cases that show an advanced stage of decay.     

Conspiracy Mongering in Venezuela: The Chavismo Period (1998–2018)

Hugo Chávez's rise to power in 1998 brought many changes to Venezuela's political culture. One transformation not frequently commented on is the constant formulation of conspiracy theories, both by chavismo supporters and by its opponents. This article discusses some of those conspiracy theories, relating to the deceased Venezuelan President's origins, his religious beliefs, the 2002 failed coup d'état, and Chávez's own death. It also addresses more recent conspiracy theories relating to Nicolás Maduro's birth, economic warfare, and drug smuggling operations. Venezuela is currently undergoing a major humanitarian crisis, and this article defends the view that, at least partially, conspiracy mongering has been a factor in Venezuela's collapse. As part of Venezuela's reconstruction, this article recommends that Venezuelan political forces need to reach a consensus and agree not to make ridiculous conspiratorial claims.     

THE POTENTIAL DEMISE OF ANOTHER NATURAL MONOPOLY: NEW TECHNOLOGIES AND THE ADMINISTRATION OF PERFORMING RIGHTS

This is a second in a series of two articles in which I challengethe collective administration of performing rights. In the firstarticle, published in a recent issue of this journal, I questionedthe natural monopoly paradigm that dominates the analysis ofcollective administration of performing rights. In this articleI demonstrate how, by lowering many of the transaction costswhich previously purported to justify the practice, new digitaltechnologies further undermine the justification for collectiveadministration. I also discuss whether market forces alone wouldtransform the market into a competitive one, consider possiblecontinuing roles for existing performing rights organizations,and compare the Canadian and the U.S. regulatory approachesto determine how conducive they are to such change.     

Editorial

Ohne Zusammenfassung

---

Editorial