Magnetic Resonance Materials in Physics, Biology and Medicine This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Information theoretic evaluation of Lorentzian, Gaussian, Voigt, and symmetric alpha-stable models of reversible transverse relaxation in cervical cancer in vivo at 3  T
DiscussionGaussian and SAS models provide better fitting of data in much of the human cervix at 3  T. Minimizing information loss through improved tissue modeling may have important implications for identifying reliable biomarkers of tumor hypoxia and iron deposition. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - August 4, 2022 Category: Materials Science Source Type: research

Pilot tone-based prospective correction of respiratory motion for free-breathing myocardial T1 mapping
DiscussionOur proposed PT-based motion correction approach allows for T1 mapping during free-breathing with the same accuracy as a corresponding breathhold T1 mapping scan. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - August 3, 2022 Category: Materials Science Source Type: research

Anatomically informed multi-level fiber tractography for targeted virtual dissection
DiscussionMLFT provides a novel way to reconstruct fiber pathways by adding the capability of including branching pathways in fiber tractography. Thanks to its robustness, feasible reconstruction extent and topography preservation, our approach may assist in clinical practice as well as in virtual dissection studies. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 29, 2022 Category: Materials Science Source Type: research

Improved total sensitivity estimation for multiple receive coils in MRI using ratios of first-order statistics
We present simple methods for correcting the spatial variation in sensitivity profiles in the context of a coil array. These methods can be used as an initial or adjunct step in data post-processing. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 25, 2022 Category: Materials Science Source Type: research

Advances in MR methodologies to study prostate cancer: current status, challenges, future directions
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 25, 2022 Category: Materials Science Source Type: research

Dictionary learning compressed sensing reconstruction: pilot validation of accelerated echo planar J-resolved spectroscopic imaging in prostate cancer
ConclusionImproved reconstruction of the accelerated 5D EP-JRESI data was observed using the hybrid DLTV. Accelerated acquisition of in vivo 5D data with as low as 8.33% samples (12x) corresponds to a total scan time of 14  min as opposed to a fully sampled scan that needs a total duration of 2.4 h (TR = 1.2 s, 32\({k}_{x}\)×16\({k}_{y}\)×8\({k}_{z}\), 512\({t}_{2}\) and 64\({t}_{1}\)). (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 23, 2022 Category: Materials Science Source Type: research

Emerging MR methods for improved diagnosis of prostate cancer by multiparametric MRI
AbstractCurrent challenges of using serum prostate-specific antigen (PSA) level-based screening, such as the increased false positive rate, inability to detect clinically significant prostate cancer (PCa) with random biopsy, multifocality in PCa, and the molecular heterogeneity of PCa, can be addressed by integrating advanced multiparametric MR imaging (mpMRI) approaches into the diagnostic workup of PCa. The standard method for diagnosing PCa is a transrectal ultrasonography (TRUS)-guided systematic prostate biopsy, but it suffers from sampling errors and frequently fails to detect clinically significant PCa. mpMRI not on...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 22, 2022 Category: Materials Science Source Type: research

Identification of metabolic correlates of mild cognitive impairment in Parkinson's disease using magnetic resonance spectroscopic imaging and machine learning
Conclusion1H-MRSI revealed metabolic changes in the default mode, ventral attention/salience, and sensorimotor networks of PD-MCI patients, which could be summarized mainly as ‘posterior cortical metabolic changes’ related with cognitive dysfunction. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 22, 2022 Category: Materials Science Source Type: research

Physical limits to human brain B0 shimming with spherical harmonics, engineering implications thereof
AbstractObjectiveAs the MRI main magnetic field rises for improved signal-to-noise ratio, susceptibility-induced B0-inhomogeneity increases proportionally, aggravating related artifacts. Considering only susceptibility disparities between air and biological tissue, we explore the topological conditions for which perfect shimming could be performed in a Region of Interest (ROI) such as the human brain or part thereof.Materials and methodsAfter theoretical considerations for perfect shimming, spherical harmonic (SH) shimming simulations of very high degree are performed, based on a 100-subject database of 1.7-mm-resolved bra...
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 13, 2022 Category: Materials Science Source Type: research

Diffusion and perfusion MRI parameters in the evaluation of placenta accreta spectrum disorders in patients with placenta previa
ConclusionThe accreta lesions in PAS disorders had deceased cellularity and increased blood movement. The alteration of placental cellularity was more prominent in placenta increta and percreta. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 8, 2022 Category: Materials Science Source Type: research

Correction to: Analysis on matrix gradient coil modeling
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 1, 2022 Category: Materials Science Source Type: research

Correction to: Analysis of coil element distribution and dimension for matrix gradient coils
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - July 1, 2022 Category: Materials Science Source Type: research

Report on the ISMRM-ESMRMB 2022 hot topic debate on the future of gadolinium as a contrast agent
(Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - June 29, 2022 Category: Materials Science Source Type: research

Analysis on matrix gradient coil modeling
ConclusionsDifferent modeling approaches can help to optimize the current distribution of coil elements and satisfy various requirements while maintaining the performance of the coil system. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - June 11, 2022 Category: Materials Science Source Type: research

Analysis of coil element distribution and dimension for matrix gradient coils
ConclusionsThe proposed metrics can provide theoretical support for designing matrix gradient coils and evaluating their performance. The role of coil elements contributes to analyzing the distributions of coil elements to decrease the number of coil elements and power amplifiers. The mutual inductance between coil elements can be a reference for designing the dimensions of coil elements. (Source: Magnetic Resonance Materials in Physics, Biology and Medicine)
Source: Magnetic Resonance Materials in Physics, Biology and Medicine - June 11, 2022 Category: Materials Science Source Type: research