MRI closer to coronary artery diagnosis than ever before. Many know that a beating heart is sometimes difficult to capture using MRI, but now MRI is closer to coronary artery diagnosis. Typically, gating and capturing the heart are done using prospective or retrospective gating, with retrospective gating being the more commonly used technique today. Fifteen years ago, prospective was the only way to acquire gated images with MRI, as retrospective was unavailable on most MRI systems. Prior to many of the updated gating...
read moreMARS MRI which is abbreviated for Metal Artifact Reduction Sequences are one of the recent trends in magnetic resonance imaging. MARS sequences can be created by us, even if your think your scanner is impossible to get MARS sequences to work. MARS are much easier to create on systems that are high field (1.5 Tesla) or even low to moderate field strength systems such as a 0.7T or a 0.35T, but on the ultra high field system (3.0Tesla) the MARS sequences can be difficult. The 3T has a higher susceptibility to metal artifacts, plus the...
read moreNMR Beginning was the beginning of MRI spectroscopy and is at the origin of using magnetic resonance for human and animal imaging purposes. Two pioneering researchers in the 1940′s, one at each end of the United States, were doing research on different chemical elements and how those chemical frequencies had a signal that registered in measurement pertaining to each chemical component. Dr. Edward Purcell (at Harvard University in Cambridge, Massachusetts) observed H1 NMR in paraffin wax at 30MHz while Dr. Felix Bloch (at Stanford...
read moreMRA Carotid Flow Quantification is a technique in which MRI scanners use a specific sequence to help determine if the blood flow is going in the correct direction. It may sound silly, but on some occasions this does not always happen. Typically a carotid MRA, which stands for magnetic resonance angiography, a study of the blood vessels, requires a nominal amount of MRI contrast administered to the veins, while a timed MRA sequence captures the contrast in the carotid neck vessels. MRA Carotid Flow Quantification The arterial and venous...
read moreMRI cardiac imaging can lead to better technologists and better imaging through understanding of the difficulties requiring the technicalities of catching a moving pathology. MRI cardiac imaging requires a series of steps to get to the area of interest requested by the radiologist and referring physician. The exam can be streamlined to specifics for finding answers to the exact information requested. Whether it is a portion of the cardiac function, pulmonary valve function, aortic valve regurgitation (leaking), QP-QS...
read moreMRI Spectroscopy is where the study of nuclear magnetic resonance, or updated to the name magnetic resonance imaging, originally developed from. Dr. Felix Bloch won the Nobel Prize in 1952 for observing and reporting NMR in paraffin wax at 30 MHz (thirty Mega-Hertz) while he worked at Stanford University, sharing the award with Dr. Edward Purcell who worked out of Harvard with H1 (hydrogen). The work from these two scientists lead the way to discoveries of other physics principles and also created the possibility of imaging through the use of...
read moreWe have been asked by CEO’s and radiologists, “How can I get more life out of our MRI system?” In this short summary, here are the primary answers to this question. How to get more life out of an MRI scanner 1) Schedule regular PM’s (Preventive Maintenance) with the vendor service group. When you need service on your Toyota or BMW, you take it to an individual who understands the intricacies of a Toyota or BMW dealer. With an MRI scanner, the item is one of the top ten most complicated man made items on...
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