abstract：PURPOSE:To prospectively compare image quality and reliability of a non-contrast, self-navigated 3D whole-heart magnetic resonance angiography (MRA) sequence with contrast-enhanced computed tomography angiography (CTA) for sizing of thoracic aortic aneurysm (TAA). METHODS:Self-navigated 3D whole-heart 1.5 T MRA was pe...

journal_title：Magnetic resonance imaging

authors： Poskaite P,Pamminger M,Kranewitter C,Kremser C,Reindl M,Reiter G,Piccini D,Dumfarth J,Henninger B,Tiller C,Holzknecht M,Reinstadler SJ,Klug G,Metzler B,Mayr A

更新日期：2021-02-01 00:00:00

abstract：:Brain vascular damage accumulate in aging and often manifest as white matter hyperintensities (WMHs) on MRI. Despite increased interest in automated methods to segment WMHs, a gold standard has not been achieved and their longitudinal reproducibility has been poorly investigated. The aim of present work is to evaluate...

journal_title：Magnetic resonance imaging

authors： Ribaldi F,Altomare D,Jovicich J,Ferrari C,Picco A,Pizzini FB,Soricelli A,Mega A,Ferretti A,Drevelegas A,Bosch B,Müller BW,Marra C,Cavaliere C,Bartrés-Faz D,Nobili F,Alessandrini F,Barkhof F,Gros-Dagnac H,Ranjeva JP

更新日期：2021-02-01 00:00:00

abstract：BACKGROUND:Ultra-high spatial resolution imaging of whole, ex vivo brains provides new opportunities to understand neurological disease. Recent work has demonstrated that 100 μm isotropic resolution can reveal anatomical details that are otherwise difficult to appreciate, but relied on fabrication facilities, fabricati...

journal_title：Magnetic resonance imaging

authors： Kim S,Sakaie K,Blümcke I,Jones S,Lowe MJ

更新日期：2021-02-01 00:00:00

abstract：PURPOSE:This study aimed to establish the topographical and zonal T2 patterns of multi-resolution MRI in medial tibial cartilage in a canine model of osteoarthritis (OA), initiated by the anterior cruciate ligament (ACL) transection surgery, and studied after 8-weeks and 12-weeks post-surgery. METHODS:Articular cartil...

journal_title：Magnetic resonance imaging

authors： Badar F,Lee J,Qu X,Xia Y

更新日期：2021-01-22 00:00:00

abstract：PURPOSE:To characterize the intracranial vascular features extracted from time of flight (TOF) images and their changes from baseline to follow-up in patients undergoing carotid revascularization, using arterial spin labeling (ASL) cerebral blood flow (CBF) measurement as a reference. METHODS:In this retrospective stu...

journal_title：Magnetic resonance imaging

authors： Chen Z,Chen L,Shirakawa M,Liu W,Ortega D,Chen J,Balu N,Trouard T,Hatsukami TS,Zhou W,Yuan C

更新日期：2021-01-01 00:00:00

abstract：:Wall shear stress (WSS) is a relevant hemodynamic indicator of the local stress applied on the endothelium surface. More specifically, its spatiotemporal distribution reveals crucial in the evolution of many pathologies such as aneurysm, stenosis, and atherosclerosis. This paper introduces a new solution, called PaLMA...

journal_title：Magnetic resonance imaging

authors： Levilly S,Castagna M,Idier J,Bonnefoy F,Le Touzé D,Moussaoui S,Paul-Gilloteaux P,Serfaty JM

更新日期：2020-12-01 00:00:00

abstract：:SSFP-based fMRI techniques, known for their high specificity and low geometrical distortion, look promising for high-resolution brain mapping. Nevertheless, they suffer from lack of speed and sensitivity, leading them to be exploited mostly in high-field scanners. Radial acquisition can help with these inefficiencies ...

journal_title：Magnetic resonance imaging

authors： Malekian V,Rastegar F,Shafieizargar B,Nasiraei-Moghaddam A

更新日期：2020-12-01 00:00:00

abstract：PURPOSE:To evaluate the influence of cholecystectomy on the flow dynamic pattern of bile in the extrahepatic bile duct by using cine-dynamic MRCP with spatially-selective inversion-recovery (IR) pulse non-invasively. MATERIALS AND METHODS:56 patients with cholecystectomy and 48 control subjects without cholecystectomy...

journal_title：Magnetic resonance imaging

authors： Sotozono H,Tamada T,Kanki A,Yasokawa K,Fukunaga T,Yamamoto A,Ito K

更新日期：2020-12-01 00:00:00

abstract：:A new approach is introduced for non-rigid registration of a pair of magnetic resonance images (MRI). It is a generalization of the demons algorithm with low computational cost, based on local information augmentation (by integrating multiple images) and balanced implementation. Specifically, a single deformation that...

journal_title：Magnetic resonance imaging

authors： Mesin L

更新日期：2020-12-01 00:00:00

abstract：:Robust voxelwise analysis using tract-based spatial statistics (TBSS) together with permutation statistical method is standardly used in analyzing diffusion tensor imaging (DTI) of brain. A similar analytical method could be useful when studying DTI of cervical spinal cord. Based on anatomical data of sixty-four healt...

journal_title：Magnetic resonance imaging

authors： Dostál M,Keřkovský M,Staffa E,Bednařík J,Šprláková-Puková A,Mechl M

更新日期：2020-11-01 00:00:00

abstract：PURPOSE:To perform comprehensive in vitro experiments using six-directional icosahedral flow encoding (ICOSA6) 4D flow magnetic resonance imaging (MRI) under various scan conditions to analyze the robustness of velocity and turbulence quantification. MATERIALS AND METHODS:In vitro flow phantoms with steady flow rates ...

journal_title：Magnetic resonance imaging

authors： Ha H,Park KJ,Dyverfeldt P,Ebbers T,Yang DH

更新日期：2020-10-01 00:00:00

abstract：PURPOSE:Intramuscular fat infiltration is a dynamic process, in response to exercise and muscle health, which can be quantified by estimating fat fraction (FF) from Dixon MRI. Healthy hip abductor muscles are a good indicator of a healthy hip and an active lifestyle as they have a fundamental role in walking. The autom...

journal_title：Magnetic resonance imaging

authors： Belzunce MA,Henckel J,Fotiadou A,Di Laura A,Hart A

更新日期：2020-10-01 00:00:00

abstract：:Diabetic retinopathy (DR) is one of a major complication of type 1 diabetes mellitus (T1DM) and a leading cause of blindness. Evidence of animal study has shown that it is not only a microvasucular lesion of the eye, but also a neurodegeneration disease of the visual system. However, the in vivo imaging evidence of ax...

journal_title：Magnetic resonance imaging

authors： Gao L,Huang M,Luo X,Song T,Wang X,Wang Z,Zhang W,Chen J,Lei H

更新日期：2020-09-01 00:00:00

abstract：AIM:To assess imaging findings and characteristics of the lymphatic system in patients affected by lipedema and lipolymphedema of the lower extremities on Non-Contrast MR Lymphography (NCMRL). MATERIALS AND METHODS:44 lower extremities in 11 consecutive female patients affected by lipedema, and 11 patients with lipoly...

journal_title：Magnetic resonance imaging

authors： Cellina M,Gibelli D,Soresina M,Menozzi A,Martinenghi C,Panzeri M,Oliva G

更新日期：2020-09-01 00:00:00

abstract：:The optics of the ocular lens are determined by its geometry (shape and volume) and its inherent gradient of refractive index (water to protein ratio), which are in turn maintained by unique cellular physiology known as the lens internal microcirculation system. Previously, magnetic resonance imaging (MRI) has been us...

journal_title：Magnetic resonance imaging

authors： Muir ER,Pan X,Donaldson PJ,Vaghefi E,Jiang Z,Sellitto C,White TW

更新日期：2020-07-01 00:00:00

abstract：:With the aim of developing a fast algorithm for high-quality MRI reconstruction from undersampled k-space data, we propose a novel deep neural Network, which is inspired by Iterative Shrinkage Thresholding Algorithm with Data consistency (NISTAD). NISTAD consists of three consecutive blocks: an encoding block, which m...

journal_title：Magnetic resonance imaging

authors： Qiu W,Li D,Jin X,Liu F,Sun B

更新日期：2020-07-01 00:00:00

abstract：PURPOSE:Visual review of individual spectra in magnetic resonance spectroscopic imaging (MRSI) data benefits from the application of spectral smoothing; however, if this processing step is applied prior to spectral analysis this can impact the accuracy of the quantitation. This study aims to analyze the effect of spect...

journal_title：Magnetic resonance imaging

authors： Goryawala M,Sullivan M,Maudsley AA

更新日期：2020-07-01 00:00:00

abstract：PURPOSE:This study aims to develop and evaluate a robust conductivity imaging method that combines total variation and wavelet regularization to enhance the accuracy of conductivity maps. THEORY AND METHODS:The proposed approach is based on a gradient-based method. The central equation is derived from Maxwell's equati...

journal_title：Magnetic resonance imaging

authors： Sun X,Lu L,Qi L,Mei Y,Liu X,Chen W

更新日期：2020-06-01 00:00:00

abstract：:Selective inversion recovery (SIR) is a quantitative magnetization transfer (qMT) method that provides estimates of parameters related to myelin content in white matter, namely the macromolecular pool-size-ratio (PSR) and the spin-lattice relaxation rate of the free pool (R1f), without the need for independent estimat...

journal_title：Magnetic resonance imaging

authors： Cronin MJ,Xu J,Bagnato F,Gochberg DF,Gore JC,Dortch RD

更新日期：2020-05-01 00:00:00

abstract：:The medical specialty radiology has experienced a number of extremely important and influential technical developments in the past that have affected how medical imaging is deployed. Artificial intelligence (AI) is potentially another such development that will introduce fundamental changes into the practice of radiol...

journal_title：Magnetic resonance imaging

authors： Gore JC

更新日期：2020-05-01 00:00:00

abstract：PURPOSE:To assess the ability and reproducibility of Non-contrast Magnetic Resonance Lymphography (NMRL) in detecting and quantify lymphedema, using a semiquantitative scoring system. METHODS AND MATERIAL:This is a monocentric retrospective study of 134 consecutive patients with a clinical diagnosis of limb lymphedema...

journal_title：Magnetic resonance imaging

authors： Franconeri A,Ballati F,Panzuto F,Raciti MV,Smedile A,Maggi A,Asteggiano C,Esposito M,Stoppa D,Lungarotti L,Bortolotto C,Giardini D,De Silvestri A,Calliada F

更新日期：2020-05-01 00:00:00

abstract：:Glioblastoma Multiforme is the most common and most aggressive type of brain tumors. Although accurate prediction of Glioblastoma borders and shape is absolutely essential for neurosurgeons, there are not many in silico platforms that can make such predictions. In the current study, an automatic patient-specific simul...

journal_title：Magnetic resonance imaging

authors： Hajishamsaei M,Pishevar A,Bavi O,Soltani M

更新日期：2020-05-01 00:00:00

abstract：:Multiparametric MRI is a remarkable imaging method for the assessment of patho-physiological processes. In particular, brain tumor characterization has taken advantage of the development of advanced techniques such as Diffusion- (DWI) and Perfusion- (PWI) Weighted Imaging, but a thorough analysis of meningiomas is sti...

journal_title：Magnetic resonance imaging

authors： Zampini MA,Buizza G,Paganelli C,Fontana G,D'Ippolito E,Valvo F,Preda L,Baroni G

更新日期：2020-04-01 00:00:00

abstract：:Myelin water fraction (MWF) images in brain tend to be spatially noisy with unknown or no apparent spatial patterns structure, so values are therefore typically averaged over large white matter (WM) volumes. We investigated the existence of an inherent spatial structure in MWF maps and explored the benefits of examini...

journal_title：Magnetic resonance imaging

authors： Baumeister TR,Kolind SH,MacKay AL,McKeown MJ

更新日期：2020-04-01 00:00:00

abstract：:Left ventricle (LV) segmentation plays an important role in the diagnosis of cardiovascular diseases. The cardiac contractile function can be quantified by measuring the segmentation results of LVs. Fully convolutional networks (FCNs) have been proven to be able to segment images. However, a large number of annotated ...

journal_title：Magnetic resonance imaging

authors： Lin A,Wu J,Yang X

更新日期：2020-02-01 00:00:00

abstract：:We propose a novel processing method for reducing shading artifacts in quantitative susceptibility mapping (QSM) for prostate imaging. In the conventional method, calculation errors in the boundary regions between water and fat cause shading artifacts that degrade the image quality for QSM. In the proposed method, wat...

journal_title：Magnetic resonance imaging

authors： Sato R,Shirai T,Soutome Y,Bito Y,Ochi H

更新日期：2020-02-01 00:00:00

abstract：:Quantifying the intracranial tissue volume changes in magnetic resonance imaging (MRI) assists specialists to analyze the effects of natural or pathological changes. Since these changes can be subtle, the accuracy of the automatic compartmentalization method is always criticized by specialists. We propose and then eva...

journal_title：Magnetic resonance imaging

authors： Azimbagirad M,Simozo FH,Senra Filho ACS,Murta Junior LO

更新日期：2020-01-01 00:00:00

abstract：:Signal-to-noise ratio (SNR) is a critical factor in MR-guided high-intensity focused ultrasound (HIFU) for local heating, which can affect the accuracy of temperature measurement. In order to achieve high SNR and higher temporal resolution, dedicated coil arrays for MR-guided HIFU applications need to be developed. In...

journal_title：Magnetic resonance imaging

authors： Chen Q,Li Y,Jiang R,Zou C,Tie C,Wen J,Yang X,Zhang X,Liu X,Zheng H

更新日期：2020-01-01 00:00:00

abstract：:The purpose of this study is to estimate the precision or statistical variability of the velocity measurements computed from MRI phase-contrast. From the analytical probability density function (PDF) of the phase in the signal we obtain the PDF of the velocity by means of an auto-convolution. This PDF allows the estim...

journal_title：Magnetic resonance imaging

authors： Irarrazaval P,Dehghan Firoozabadi A,Uribe S,Tejos C,Sing-Long C

更新日期：2019-11-01 00:00:00

abstract：:Quantification of magnetic resonance (MR)-based relaxation parameters of tendons and ligaments is challenging due to their very short transverse relaxation times, requiring application of ultra-short echo-time (UTE) imaging sequences. We quantify both T1 and T2* in the quadriceps and patellar tendons of healthy volunt...

journal_title：Magnetic resonance imaging

authors： Krämer M,Maggioni MB,Brisson NM,Zachow S,Teichgräber U,Duda GN,Reichenbach JR

更新日期：2019-11-01 00:00:00

abstract：PURPOSE:To develop a free-running framework for 3D isotropic simultaneous myocardial T1/T2 mapping and cine imaging. METHODS:Continuous data acquisition with 3D golden angle radial trajectory is used in conjunction with T2 preparation of varying echo times and inversion recovery (IR) pulses to enable simultaneous myoc...

journal_title：Magnetic resonance imaging

authors： Qi H,Bustin A,Cruz G,Jaubert O,Chen H,Botnar RM,Prieto C

更新日期：2019-11-01 00:00:00

abstract：PURPOSE:To investigate the correlation of magnetic resonance imaging (MRI), apparent diffusion coefficient (ADC) and intravoxel incoherent motion imaging parameters with Ki-67 expression in cholangiocarcinoma. METHODS:A total of 42 extrahepatic cholangiocarcinoma (EHCC) cases confirmed by surgical pathology were analy...

journal_title：Magnetic resonance imaging

authors： Cui X,Chen H,Cai S,Tang Q,Fang X

更新日期：2019-11-01 00:00:00

abstract：PURPOSE:To identify quantitative dynamic contrast-enhanced (DCE)-MRI perfusion parameters indicating tumor response of hepatocellular carcinoma (HCC) to transarterial chemoembolization (TACE). MATERIALS AND METHODS:This prospective pilot study was approved by our institutional review board; written and informed consen...

journal_title：Magnetic resonance imaging

authors： Thibodeau-Antonacci A,Petitclerc L,Gilbert G,Bilodeau L,Olivié D,Cerny M,Castel H,Turcotte S,Huet C,Perreault P,Soulez G,Chagnon M,Kadoury S,Tang A

更新日期：2019-10-01 00:00:00

abstract：PURPOSE:To systematically investigate the scan-rescan, intra-observer, and inter-observer reproducibility of an improved DANTE-SPACE sequence for the simultaneous assessment of intra- and extracranial arterial vessel wall morphology. MATERIALS AND METHODS:Thirty-five healthy volunteers and 10 patients with atheroscler...

journal_title：Magnetic resonance imaging

authors： Wan L,Zhang N,Zhang L,Long X,Jia S,Li Y,Liang D,Zheng H,Liu X

更新日期：2019-10-01 00:00:00

abstract：:Ultra-high field magnetic resonance imaging data obtained using a multi-echo gradient echo sequence has been shown to contain information on tissue microstructure. Quantitative assessment of water fraction, relaxation time and frequency shift using multi-compartment signal modelling may help improve our understanding ...

journal_title：Magnetic resonance imaging

authors： Thapaliya K,Urriola J,Barth M,Reutens DC,Bollmann S,Vegh V

更新日期：2019-09-01 00:00:00

abstract：OBJECT:Dynamic in vivo31P-NMR spectroscopy in combination with Magnetic Resonance Imaging (MRI) was used to study muscle bioenergetics of boreal and Arctic scallops (Pecten maximus and Chlamys islandica) to test the hypothesis that future Ocean Warming and Acidification (OWA) will impair the performance of marine inver...

journal_title：Magnetic resonance imaging

authors： Bock C,Wermter FC,Schalkhausser B,Blicher ME,Pörtner HO,Lannig G,Sejr MK

更新日期：2019-09-01 00:00:00

abstract：:An understanding of the nucleation and growth mechanism of methane hydrate in porous space is essential for exploitation and application of hydrates, but the mechanism is yet to be clarified. Magnetic resonance imaging (MRI) was employed to visually analyze the spatial and temporal formation behavior of methane hydrat...

journal_title：Magnetic resonance imaging

authors： Zhang L,Sun L,Sun M,Lv X,Dong H,Miao Y,Yang L,Song Y,Zhao J

更新日期：2019-09-01 00:00:00

abstract：PURPOSE:Only a few studies have investigated the brain morphology abnormalities in structural MRI in patients with drug-naïve idiopathic generalized epilepsy (IGE) and mainly focused on brain volume changes. In the present study, we aimed to investigate the changes in three morphologic measurement differences including...

journal_title：Magnetic resonance imaging

authors： Deng DM,Chen LZ,Li YW,Long R,Tang GC,Han FG,Diao XM,Chen HL,Long ZL,Qiu LH

更新日期：2019-09-01 00:00:00

abstract：OBJECTIVE:To characterize capillary perfusion and tissue diffusion changes in transplant renal artery stenosis (TRAS) with diffusion-weighted imaging (DWI). MATERIALS & METHODS:We retrospectively identified 30 patients with non-contrast enhanced magnetic resonance angiography-proven TRAS. Another 20 kidney transplant ...

journal_title：Magnetic resonance imaging

authors： Fan M,Ni X,Li Y,Chen J,Cheng D,Shi D,He X,Wen J

更新日期：2019-07-01 00:00:00

abstract：OBJECTIVES:To investigate the feasibility of chemical exchange saturation transfer (CEST) MRI in patients with breast carcinomas and possible correlations between magnetization transfer asymmetry (MTRasym) values and histological features, such as tumor grade and the Ki-67 proliferation index. MATERIALS AND METHODS:Ni...

journal_title：Magnetic resonance imaging

authors： Zaric O,Farr A,Poblador Rodriguez E,Mlynarik V,Bogner W,Gruber S,Asseryanis E,Singer CF,Trattnig S

更新日期：2019-06-01 00:00:00