A new method for diffusion weighted imaging.


:A new method for generating diffusion contrast in magnetic resonance imaging is presented. This technique is robust enough to allow implementation on conventional imaging systems without hardware modifications. Results from phantom measurements are reported. Qualitative contrast changes in magnetic resonance images derived from live mammalian brain are also demonstrated.


Magn Reson Imaging


Norwood TJ,Williams SC




Has Abstract


1993-01-01 00:00:00














  • Non-contrast MR Lymphography of lipedema of the lower extremities.

    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

    pub_type: 杂志文章


    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

  • High-resolution, three-dimensional diffusion-weighted breast imaging using DESS.

    abstract:PURPOSE:To evaluate the use of the double-echo steady-state (DESS) sequence for acquiring high-resolution breast images with diffusion and T2 weighting. MATERIALS AND METHODS:Phantom scans were used to verify the T2 and diffusion weighting of the DESS sequence. Image distortion was evaluated in volunteers by comparing...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Granlund KL,Staroswiecki E,Alley MT,Daniel BL,Hargreaves BA

    更新日期:2014-05-01 00:00:00

  • Tortuosity measurement and the effects of finite pulse widths on xenon gas diffusion NMR studies of porous media.

    abstract::We have extended the utility of NMR as a technique to probe porous media structure over length scales of approximately 100-2000 microm by using the spin 1/2 noble gas 129Xe imbibed into the system's pore space. Such length scales are much greater than can be probed with NMR diffusion studies of water-saturated porous ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Mair RW,Hürlimann MD,Sen PN,Schwartz LM,Patz S,Walsworth RL

    更新日期:2001-04-01 00:00:00

  • Three dimensional k-space trajectory design using genetic algorithms.

    abstract::Image quality and total scan time in MRI are determined in large part by the trajectory employed to sample the Fourier space. Each trajectory has different properties like coverage of k-space, scan time, sensitivity to off-resonance conditions, etc. These properties are often contradictory, therefore a universal optim...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Sabat S,Mir R,Guarini M,Guesalaga A,Irarrazaval P

    更新日期:2003-09-01 00:00:00

  • Correlations and dissociations between BOLD signal and P300 amplitude in an auditory oddball task: a parametric approach to combining fMRI and ERP.

    abstract::A parametric method is proposed to examine the relationship between neuronal activity, measured with event related potentials (ERPs), and the hemodynamic response, observed with functional magnetic resonance imaging (fMRI), during an auditory oddball paradigm. After verifying that the amplitude of the evoked response ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Horovitz SG,Skudlarski P,Gore JC

    更新日期:2002-05-01 00:00:00

  • Noncontrast MRI with diffusion-weighted imaging as the sole imaging modality for detecting liver malignancy in patients with high risk for hepatocellular carcinoma.

    abstract:PURPOSE:To compare the diagnostic performance of the noncontrast MRI including DWI to the standard MRI for detecting hepatic malignancies in patients with chronic liver disease. MATERIALS AND METHODS:We included 135 patients with 136 histologically-confirmed hepatocellular carcinomas (HCCs), 12 cholangiocarcinomas, an...

    journal_title:Magnetic resonance imaging

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    authors: Kim YK,Kim YK,Park HJ,Park MJ,Lee WJ,Choi D

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  • Effects of apodization smoothing and denoising on spectral fitting.

    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

    pub_type: 杂志文章


    authors: Goryawala M,Sullivan M,Maudsley AA

    更新日期:2020-07-01 00:00:00

  • Phase detection and contrast loss in magnetic resonance imaging.

    abstract::Several recent articles have assessed the relative efficiency of nuclear magnetic resonance (NMR) pulse sequences. One consideration that has received little attention is the effect on image contrast of displaying images without information on the sign of the reconstructed signals. The radiofrequency receivers current...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Hendrick RE,Nelson TR,Hendee WR

    更新日期:1984-01-01 00:00:00

  • Probe efficiency improvement with remote and transmission line tuning and matching.

    abstract::In certain nuclear magnetic resonance (NMR) applications in which accessibility to the gantry is limited, performing optimal tuning and matching represents a major problem. Here, we discuss a method of tuning NMR probe circuits and matching their impedances which uses cables with different impedance values. This simpl...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Villa P,Vaquero JJ,Chesnick S,Ruiz-Cabello J

    更新日期:1999-09-01 00:00:00

  • Fast reconstruction of highly undersampled MR images using one and two dimensional principal component analysis.

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Zong F,d'Eurydice MN,Galvosas P

    更新日期:2016-02-01 00:00:00

  • Artificial intelligence in medical imaging.

    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

    pub_type: 社论


    authors: Gore JC

    更新日期:2020-05-01 00:00:00

  • Agarose as a tissue equivalent phantom material for NMR imaging.

    abstract::Phantoms for evaluation of nuclear magnetic resonance (NMR) imaging systems were made from water-based agarose gels, according to a standard procedure herein described. Copper sulfate (CuSO4) was included in the gels to further affect their proton relaxation characteristics. The proton relaxation rates of each batch o...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Mitchell MD,Kundel HL,Axel L,Joseph PM

    更新日期:1986-01-01 00:00:00

  • A simple noise correction scheme for diffusional kurtosis imaging.

    abstract:PURPOSE:Diffusional kurtosis imaging (DKI) is sensitive to the effects of signal noise due to strong diffusion weightings and higher order modeling of the diffusion weighted signal. A simple noise correction scheme is proposed to remove the majority of the noise bias in the estimated diffusional kurtosis. METHODS:Weig...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Glenn GR,Tabesh A,Jensen JH

    更新日期:2015-01-01 00:00:00

  • Hepatic sarcoidosis: MR appearances in patients with chronic liver disease.

    abstract:PURPOSE:To describe the MR appearances of hepatic sarcoidosis in patients with chronic liver disease and correlate the results with clinical stage of disease as measured with the Mayo end-stage liver disease (MELD) score. MATERIALS AND METHODS:Twenty patients with chronic liver disease and histopathological diagnosis ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Ferreira A,Ramalho M,de Campos RO,Heredia V,Roque A,Vaidean G,Semelka RC

    更新日期:2013-04-01 00:00:00

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    journal_title:Magnetic resonance imaging

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    更新日期:2003-10-01 00:00:00

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Hilaire L,Wehrli FW,Song HK

    更新日期:2000-09-01 00:00:00

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    pub_type: 杂志文章


    authors: Hendrick RE

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  • A new diagnostic approach to vascular rings and pulmonary slings: the role of MRI.

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    pub_type: 杂志文章


    authors: Beekman RP,Hazekamp MG,Sobotka MA,Meijboom EJ,de Roos A,Staalman CR,Beek FJ,Ottenkamp J

    更新日期:1998-01-01 00:00:00

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Numano T,Mizuhara K,Hata J,Washio T,Homma K

    更新日期:2015-01-01 00:00:00

  • Truncation artifact reduction in spectroscopic imaging using a dual-density spiral k-space trajectory.

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Sarkar S,Heberlein K,Hu X

    更新日期:2002-12-01 00:00:00

  • Analyzing spatially and temporally visualized formation behavior of methane hydrate in unconsolidated porous media.

    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...

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    pub_type: 杂志文章


    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

  • High resolution simultaneous imaging of intracranial and extracranial arterial wall with improved cerebrospinal fluid suppression.

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Zhang L,Zhang N,Wu J,Liu X,Chung YC

    更新日期:2017-12-01 00:00:00

  • Simultaneous acquisition of multiple orders of intermolecular multiple-quantum coherence images in vivo.

    abstract::Until recently, NMR imaging with intermolecular multiple-quantum coherences (iMQCs) has been based on the acquisition of a single echo. In vivo studies of iMQC image contrast would greatly benefit from a method that could acquire several orders of quantum coherence during the same acquisition. This would enable compar...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Shannon KL,Branca RT,Galiana G,Cenzano S,Bouchard LS,Soboyejo W,Warren WS

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  • Lee-Goldburg solid-state imaging.

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: De Luca F,Lugeri N,De Simone BC,Maraviglia B

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  • MR angiography of meningioma.

    abstract::The clinical evaluation of three-dimensional time-of-flight MR angiography was prospectively performed in 16 patients with intracranial meningioma. MR angiographic techniques used in this study both with and without gadopentetate dimeglumine made it possible to demonstrate the topographic relationship between the tumo...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Kadota T,Kuriyama K,Inoue E,Fujita M,Nakagawa H,Kuroda C

    更新日期:1993-01-01 00:00:00

  • Effects of osmotic manipulation of intracellular hydration of HeLa S-3 cells on their proton NMR relaxation times.

    abstract::Pellets of HeLa from suspension cultured cells in isotonic medium (300 mosmolar) were introduced into a Bruker CXP100 NMR spectrophotometer at 80 mHz within 5 min of the start of centrifugation. T1 and T2 times were measured within a total elapsed time of 20-25 min at 80 mHz and 37 degrees C, and averaged 1430 msec an...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Wheatley DN,Rimmington JE,Foster MA

    更新日期:1990-01-01 00:00:00

  • The effects of changing water content, relaxation times, and tissue contrast on tissue segmentation and measures of cortical anatomy in MR images.

    abstract::Water content is the dominant chemical compound in the brain and it is the primary determinant of tissue contrast in magnetic resonance (MR) images. Water content varies greatly between individuals, and it changes dramatically over time from birth through senescence of the human life span. We hypothesize that the effe...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Bansal R,Hao X,Liu F,Xu D,Liu J,Peterson BS

    更新日期:2013-12-01 00:00:00

  • Pharmacokinetic analysis of glioma compartments with dynamic Gd-DTPA-enhanced magnetic resonance imaging.

    abstract::Dynamic contrast-enhanced magnetic resonance imaging (MRI) is widely used for measuring perfusion and blood volume, especially cerebral blood volume (CBV). In case of blood-brain barrier (BBB) disruption, the conventional techniques only partially determine the pharmacokinetic parameters of contrast medium (CM) exchan...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Lüdemann L,Hamm B,Zimmer C

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  • Can preoperative diffusion-weighted MRI predict postoperative hepatic insufficiency after curative resection of HBV-related hepatocellular carcinoma? A pilot study.

    abstract::Liver fibrosis determines the functional liver reserve. Several studies have reported that the apparent diffusion coefficient (ADC) values of diffusion-weighted magnetic resonance imaging (DW-MRI) can assess liver fibrosis. We investigated whether DW-MRI predicts postoperative hepatic insufficiency and liver fibrosis ...

    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    authors: Kim SU,Kim YC,Choi JS,Kim KS,Choi GH,Choi JS,Park JY,Kim DY,Ahn SH,Choi EH,Park YN,Chon CY,Han KH,Kim MJ

    更新日期:2010-07-01 00:00:00

  • A flexible 9-channel coil array for fast 3D MR thermometry in MR-guided high-intensity focused ultrasound (HIFU) studies on rabbits at 3 T.

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    journal_title:Magnetic resonance imaging

    pub_type: 杂志文章


    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