Nuclear magnetic resonance relaxometry is a uniquely practical and versatile implementation of NMR technology. Because it does not depend on chemical shift resolution, it can be performed using low-field compact instruments deployed in atypical settings. Early relaxometry studies of human blood were focused on developing a diagnostic test for cancer. Those efforts were misplaced, as the measure...

We read with interest the article by Jacob and colleagues [1] on the regulation of microcirculatory blood flow. In our opinion, the authors missed an important parameter, i.e., blood components and, particularly, red blood cells (RBC). This is regrettable since blood composition is the main parameter that we can influence by our therapies (fluid resuscitation, blood or albumin transfusion) in s...

Blood transfusion is made possible because, in most countries and organizations, altrui­ stic individuals voluntarily, anonymously, and generously donate (without compensation) either whole blood or separated components that are then processed and distributed by professionals, prior to being allocated to recipients in need. Being part of modern medicine, blood transfusion uses so­called standar...