The introduction does not give basic background information to the study as it is set for readers who already have intense radiology knowledge. The introduction of the article starts off with why the study was conducted, due to the discovery of causality amongst patients who had used gadolinium based contrast agents. Nephrogenic Systemic Fibrosis (NSF) was the disease caused by the use of the gadolinium based contrast agent. Once again the introductions lacks literature on what this disease actually was or how the gadolinium based contrast agent caused it. The introduction then goes into the history of the different contrast agent and non-contrast agent magnetic resonance angiography methods. Then towards the end of the introduction the aim of the research that was conducted was mentioned, which is a good idea as it brings the reader, back in to understanding as to why the research was conducted.
Moving on to the next part which is the methods which was explained by the authors in much detail as to what they exactly did to study the different patients, what ages and sexes of patients that took part in the research and how the research was in line with the ethics and law. Which is in fact a good start which to the methods, which shows the reader that the research was conducted ethically and according to law. The methods then go into how the study was compared with different sequences which are 2D TOF and a TRANCE covering the kidney and pelvic vessels, a 3D TOF, a 3D PC and a 3D B-SSFP covering the aortic