With reference to the article on phase-sensitive inversion recovery imaging published in the June/July 2005 issue of AJNR (1), the authors did not acknowledge in their references our original paper on phase-sensitive inversion recovery imaging pulse sequence, technique, and image reconstruction algorithm for tissue contrast enhancement published by Moran, Kumar, et al in 1986 in Magnetic Resonance Imaging (2). The article in the June/July 2005 issue of AJNR compared phase-sensitive inversion recovery imaging sequence with T1SE and T1FLAIR and found that the phase-sensitive inversion recovery sequence has the highest contrast-to-noise ratio efficiency. However, we already published in detail phase-sensitive inversion recovery imaging technique for tissue contrast enhancement in our 1986 article. It is clear that the phase-sensitive inversion recovery imaging technique did not originate with these authors because, as noted, it was already documented in 1986. The authors used the phase-sensitive inversion recovery technique in their AJNR paper without acknowledging our original publication. It becomes an ethical issue when a published original article is not cited as a reference.
It is my request that this error be corrected based on merit and on ethical guidelines for publications.
References
Reply
As stated in our manuscript (1), the main purpose of our paper was to “describe the implementation of a new technique for generating high gray matter (GM) and white matter (WM) contrast in a short scan time, make a quantitative evaluation of the contrast efficiency, and explore its potential applications in neuroimaging.” It was never our intention to claim that we developed the phase-sensitive T1IR technique. This is obvious from the numerous references that we provided to this technique in our publication (1; see references 10–18). In contrast, the main purpose of the important publication by Moran et al (2), as stated in their paper, was “to develop the appropriate physical theory of both image reconstruction methods relevant to IR sequences.” Their publication never addressed the optimization of scan time, which is the main objective of our paper. Thus, we do not think that there is any overlap between their work and the current manuscript.
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