Corrections to "Direct Patlak Reconstruction From Dynamic PET Data Using the Kernel Method With MRI Information Based on Structural Similarity".

abstract：:Given that heart disease can cause abnormal motion dynamics over the cardiac cycle, understanding and quantifying cardiac motion can provide insight for clinicians to aid with diagnosis, therapy planning, and determining prognosis. The goal of this paper is to extract population-specific motion patterns from 3D displa...

journal_title：IEEE transactions on medical imaging

authors： McLeod K,Sermesant M,Beerbaum P,Pennec X

更新日期：2015-07-01 00:00:00

abstract：:In magnetic resonance imaging (MRI), spatial resolution is limited by several factors such as acquisition time, short physiological phenomena, and organ motion. The acquired image usually has higher resolution in two dimensions (the acquisition plane) in comparison with the third dimension, resulting in highly anisotr...

journal_title：IEEE transactions on medical imaging

authors： Jafari-Khouzani K

更新日期：2014-10-01 00:00:00

abstract：:Groupwise nonrigid image registration is a powerful tool to automatically establish correspondences across sets of images. Such correspondences are widely used for constructing statistical models of shape and appearance. As existing techniques usually treat registration as an optimization problem, a good initializatio...

journal_title：IEEE transactions on medical imaging

authors： Zhang P,Cootes TF

更新日期：2012-02-01 00:00:00

abstract：:An analysis of the kinetics of myocardial contrast enhancement is an important component of myocardial perfusion studies. The contrast enhancement can be modeled by a linear time-invariant system, and the myocardial impulse response, calculated by deconvolution of the measured tissue response with an arterial input, g...

journal_title：IEEE transactions on medical imaging

authors： Jerosch-Herold M,Hu X,Murthy NS,Seethamraju RT

更新日期：2004-07-01 00:00:00

abstract：:Decomposition of water and fat in magnetic resonance imaging (MRI) is important for biomedical research and clinical applications. In this paper, we propose a two-phased approach for the three-point water-fat decomposition problem. Our contribution consists of two components: 1) a background-masked Markov random field...

journal_title：IEEE transactions on medical imaging

authors： Huang F,Narayan S,Wilson D,Johnson D,Zhang GQ

更新日期：2011-08-01 00:00:00

abstract：:Blood oxygen level dependent (BOLD) functional magnetic resonance imaging (fMRI) is conventionally done by reconstructing T(2)(*)-weighted images. However, since the images are unitless they are nonquantifiable in terms of important physiological parameters. An alternative approach is to reconstruct R(2)(*) maps which...

journal_title：IEEE transactions on medical imaging

authors： Olafsson VT,Noll DC,Fessler JA

更新日期：2008-09-01 00:00:00

abstract：:In this paper, we present a novel technique based on nonrigid image registration for myocardial motion estimation using both untagged and 3-D tagged MR images. The novel aspect of our technique is its simultaneous usage of complementary information from both untagged and 3-D tagged MR images. To estimate the motion wi...

journal_title：IEEE transactions on medical imaging

authors： Shi W,Zhuang X,Wang H,Duckett S,Luong DV,Tobon-Gomez C,Tung K,Edwards PJ,Rhode KS,Razavi RS,Ourselin S,Rueckert D

更新日期：2012-06-01 00:00:00

abstract：:A fully automated 2-D+time myocardial segmentation framework is proposed for cardiac magnetic resonance (CMR) blood-oxygen-level-dependent (BOLD) data sets. Ischemia detection with CINE BOLD CMR relies on spatio-temporal patterns in myocardial intensity, but these patterns also trouble supervised segmentation methods,...

journal_title：IEEE transactions on medical imaging

authors： Oksuz I,Mukhopadhyay A,Dharmakumar R,Tsaftaris SA

更新日期：2017-11-01 00:00:00

abstract：:Positron emission tomography (PET) is a useful tool for pharmacokinetics studies in rodents during the preclinical phase of drug and tracer development. However, rodent organs are small as compared to the scanner's intrinsic resolution and are affected by physiological movements. We present a new method for the segmen...

journal_title：IEEE transactions on medical imaging

authors： Maroy R,Boisgard R,Comtat C,Frouin V,Cathier P,Duchesnay E,Dollé F,Nielsen PE,Trébossen R,Tavitian B

更新日期：2008-03-01 00:00:00

abstract：:Three-dimensional (3-D) reconstructions of coronary bypass grafts performed from X-ray angiographic images may become increasingly important for the investigation of damaging mechanical stresses imposed to these vessels by the cyclic movement of the heart. Contrary to what we had experienced with coronary arteries, ap...

journal_title：IEEE transactions on medical imaging

authors： Dorsaz PA,Dorsaz L,Doriot PA

更新日期：2000-07-01 00:00:00

abstract：:Magnetic resonance imaging (MRI) on patients with implanted deep brain stimulators (DBSs) can be hazardous because of the antenna-effect of leads exposed to the incident radio-frequency field. This study evaluated electromagnetic field and specific absorption rate (SAR) changes as a function of lead resistivity on an ...

journal_title：IEEE transactions on medical imaging

authors： Angelone LM,Ahveninen J,Belliveau JW,Bonmassar G

更新日期：2010-04-01 00:00:00

abstract：:This paper addresses the implementation of image processing and computer vision techniques to automate tracer flow extraction in images obtained by the photochromic dye technique. This task is important in modeled arterial blood flow studies. Currently, it is performed via manual application of B-spline curve fitting....

journal_title：IEEE transactions on medical imaging

authors： Androutsos D,Trahanias PE,Venetsanopoulos AN

更新日期：1997-06-01 00:00:00

abstract：:Ultra-short TE (UTE) sequences with radial sampling make it possible to visualize tissues with very short T2 decay times. The UTE sequence acquires an echo signal from the central to the outer parts of k-space and is very sensitive to small trajectory errors. Therefore, k-space errors caused by imperfections in the gr...

journal_title：IEEE transactions on medical imaging

authors： Takizawa M,Hanada H,Oka K,Takahashi T,Yamamoto E,Fujii M

更新日期：2013-02-01 00:00:00

abstract：:Similarity measure is a main core of image registration algorithms. Spatially varying intensity distortion is an important challenge, which affects the performance of similarity measures. Correlation among the pixels is the main characteristic of this distortion. Similarity measures such as sum-of-squared-differences ...

journal_title：IEEE transactions on medical imaging

authors： Ghaffari A,Fatemizadeh E

更新日期：2018-01-01 00:00:00

abstract：:Ultrasound molecular imaging (USMI) is accomplished by detecting microbubble (MB) contrast agents that have bound to specific biomarkers, and can be used for a variety of imaging applications, such as the early detection of cancer. USMI has been widely utilized in preclinical imaging in mice; however, USMI in humans c...

journal_title：IEEE transactions on medical imaging

authors： Hyun D,Abou-Elkacem L,Perez VA,Chowdhury SM,Willmann JK,Dahl JJ

更新日期：2018-01-01 00:00:00

abstract：:Cell segmentation and tracking in time-lapse fluorescence microscopy images is a task of fundamental importance in many biological studies on cell migration and proliferation. In recent years, level sets have been shown to provide a very appropriate framework for this purpose, as they are well suited to capture topolo...

journal_title：IEEE transactions on medical imaging

authors： Dzyubachyk O,van Cappellen WA,Essers J,Niessen WJ,Meijering E

更新日期：2010-03-01 00:00:00

abstract：:We have calculated the aperture function of a positron computed tomograph (PCT) with computer simulation, and evaluated the axial resolution of a multislice PCT, Positologica III, both theoretically and experimentally. The axial point spread function (PSF) was approximately a triangle at or near the center of the fiel...

journal_title：IEEE transactions on medical imaging

authors： Senda M,Yonekura Y,Tamaki N,Tanaka Y,Komori M,Minato K,Konishi J,Torizuka K

更新日期：1985-01-01 00:00:00

abstract：:An approach for estimating the motion of arteries in digital angiographic image sequences is proposed. Binary skeleton images are registered using an elastic registration algorithm in order to estimate the motion of the corresponding arteries. This algorithm operates recursively on the skeleton images by considering a...

journal_title：IEEE transactions on medical imaging

authors： Tom BS,Efstratiadis SN,Katsaggelos AK

更新日期：1994-01-01 00:00:00

abstract：:Most strain imaging techniques follow a pipeline strategy: in the first step, tissue displacement is estimated from radio-frequency (RF) frames, and in the second step, a spatial derivative operation is applied. There are two main issues that arise from this framework. First, the gradient operation amplifies noise, an...

journal_title：IEEE transactions on medical imaging

authors： Omidyeganeh M,Xiao Y,Ahmad MO,Rivaz H

更新日期：2017-06-01 00:00:00

abstract：:If a flow field exists within an object that is being imaged, there could be a velocity spectrum in each voxel due to the finite voxel size. Consequently, the mean value and the variance of velocity in each voxel can be defined and used to describe the velocity spectrum. An NMR (nuclear magnetic resonance) imaging tec...

journal_title：IEEE transactions on medical imaging

authors： Xiang QS,Nalcioglu O

更新日期：1988-01-01 00:00:00

abstract：:In this paper, we are interested in soft tissue differentiation by multiband images obtained from the High-Resolution Ultrasonic Transmission Tomography (HUTT) system using a spectral target detection method based on constrained energy minimization (CEM). We have developed a new tissue differentiation method (called "...

journal_title：IEEE transactions on medical imaging

authors： Jeong JW,Kim TS,Shin DC,Do S,Singh M,Marmarelis VZ

更新日期：2005-03-01 00:00:00

abstract：:Cardiac myofibre deformation is an important determinant of the mechanical function of the heart. Quantification of myofibre strain relies on 3D measurements of ventricular wall motion interpreted with respect to the tissue microstructure. In this study, we estimated in vivo myofibre strain using 3D structural and fun...

journal_title：IEEE transactions on medical imaging

authors： Wang VY,Casta C,Zhu YM,Cowan BR,Croisille P,Young AA,Clarysse P,Nash MP

更新日期：2016-11-01 00:00:00

abstract：:We propose a novel adaptive approach based on the Reproducing Kernel Particle Method (RKPM) to extract the cortical surfaces of the brain from three-dimensional (3-D) magnetic resonance images (MRIs). To formulate the discrete equations of the deformable model, a flexible particle shape function is employed in the Gal...

journal_title：IEEE transactions on medical imaging

authors： Xu M,Thompson PM,Toga AW

更新日期：2006-06-01 00:00:00

abstract：:Wireless capsule endoscopy has opened a new era by enabling remote diagnostic assessment of the gastrointestinal tract in a painless procedure. Video capsule endoscopy is currently commercially available worldwide. However, it is limited to visualization of superficial tissue. Ultrasound (US) imaging is a complementar...

journal_title：IEEE transactions on medical imaging

authors： Wang X,Seetohul V,Chen R,Zhang Z,Qian M,Shi Z,Yang G,Mu P,Wang C,Huang Z,Zhou Q,Zheng H,Cochran S,Qiu W

更新日期：2017-09-01 00:00:00

abstract：:Magnetic resonance imaging (MRI) reconstruction techniques are often validated with signal-to-noise ratio (SNR), contrast-to-noise ratio, and mean-to-standard-deviation ratio measured on example images. We present human and model observers as a novel approach to evaluating reconstructions for low-SNR magnetic resonanc...

journal_title：IEEE transactions on medical imaging

authors： Tisdall MD,Atkins MS

更新日期：2006-11-01 00:00:00

abstract：:We suggest a polynomial program for the calculation of optimized gradient waveforms for magnetic resonance tomography pulse sequences. Such non-linear mathematical programs can describe gradient system capabilities, meet k-space trajectory specifications, and capture sequence timing conditions. Moreover they allow the...

journal_title：IEEE transactions on medical imaging

authors： Majewski K,Heid O,Kluge T

更新日期：2010-06-01 00:00:00

abstract：:This paper discusses image reconstruction with a tilted gantry in multislice computed tomography (CT) with helical (spiral) data acquisition. The reconstruction problem with gantry tilt is shown to be transformable into the problem of reconstructing a virtual object from multislice CT data with no gantry tilt, for whi...

journal_title：IEEE transactions on medical imaging

authors： Noo F,Defrise M,Kudo H

更新日期：2004-09-01 00:00:00

abstract：:Ultrasonography and photoacoustic tomography provide complementary contrasts in preclinical studies, disease diagnoses, and imaging-guided interventional procedures. Here, we present a video-rate (20 Hz) dual-modality ultrasound and photoacoustic tomographic platform that has a high resolution, rich contrasts, deep pe...

journal_title：IEEE transactions on medical imaging

authors： Zhang Y,Wang L

更新日期：2020-12-01 00:00:00

abstract：:Advances in the area of digital chest radiography have resulted in the acquisition of high-quality images of the human chest. With these advances, there arises a genuine need for image processing algorithms specific to the chest, in order to fully exploit this digital technology. We have implemented the well-known tec...

journal_title：IEEE transactions on medical imaging

authors： Sherrier RH,Johnson GA

更新日期：1987-01-01 00:00:00

abstract：:This paper presents a learning-based method for deformable registration of magnetic resonance (MR) brain images. There are two novelties in the proposed registration method. First, a set of best-scale geometric features are selected for each point in the brain, in order to facilitate correspondence detection during th...

journal_title：IEEE transactions on medical imaging

authors： Wu G,Qi F,Shen D

更新日期：2006-09-01 00:00:00