Relevant bibliographies by topics / Echo planar imaging (EPI)

Academic literature on the topic 'Echo planar imaging (EPI)'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Echo planar imaging (EPI)"

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Dudau, Cristina, Ashleigh Draper, Maria Gkagkanasiou, Geoffrey Charles-Edwards, Irumee Pai, and Steve Connor. "Cholesteatoma: multishot echo-planar vs non echo-planar diffusion-weighted MRI for the prediction of middle ear and mastoid cholesteatoma." BJR|Open 1, no. 1 (July 2019): 20180015. http://dx.doi.org/10.1259/bjro.20180015.

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Objective: We aimed to compare a newer readout-segmented echoplanar imaging (RS-EPI) technique with the established single shot turbo spin echo (SS-TSE) non-EPI diffusion-weighted imaging (DWI) in detecting surgically validated cholesteatoma. Methods: We retrospectively reviewed 358 consecutive MRI studies in 285 patients in which both RS-EPI and non-EPI DWI sequences were performed. Each diffusion sequence was reviewed independently and scored negative, indeterminate or positive for cholesteatoma in isolation and after reviewing the T1W sequence. Average artefacts scores were evaluated and the lesion size measured as a distortion indicator. The imaging scores were correlated with surgical validation, clinical and imaging follow-up. Results: There were 239 middle ear and central mastoid tract and 34 peripheral mastoid lesions. 102 tympanomastoid operations were performed. The positive predictive value ( PPV), post-operative PPV, primary PPV, negative predictive value were 93%, 95%, 87.5%, 70% for RS-EPI and 92.5%, 93.6%, 90%, 79% for non-EPI DWI. There was good agreement between the two techniques (k = 0.75). Non-EPI DWI is less susceptible to skull base artefacts although the mean cholesteatoma measurement difference was only 0.53 mm. Conclusion: RS-EPI has comparable PPV with non-EPI DWI in both primary and post-operative cholesteatoma but slightly lower negative predictive value. When there is a mismatch, non-EPI DWI better predicts the presence of cholesteatoma. There is good agreement between the sequences for cholesteatoma diagnosis. The T1W sequence is very important in downgrading indeterminate DWI signal lesions to a negative score. Advances in knowledge: This is, to our knowledge, the first study to compare a multishot EPI DWI technique with the established non- EPI DWI in cholesteatoma diagnosis.
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Shimada, Kouji, Yukio Kawashima, Kouji Wada, Yoshikazu Shibata, and Toshio Matoba. "Functional MRI using Echo planar Imaging." Japanese Journal of Radiological Technology 52, no. 9 (1996): 1179. http://dx.doi.org/10.6009/jjrt.kj00001354921.

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Xu, Xiaoquan, Yanjun Wang, Hao Hu, Guoyi Su, Hu Liu, Haibin Shi, and Feiyun Wu. "Readout-segmented echo-planar diffusion-weighted imaging in the assessment of orbital tumors: comparison with conventional single-shot echo-planar imaging in image quality and diagnostic performance." Acta Radiologica 58, no. 12 (March 22, 2017): 1457–67. http://dx.doi.org/10.1177/0284185117695667.

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Background Readout-segmented echo-planar imaging (RS-EPI) could improve the imaging quality of diffusion-weighted imaging (DWI) in various organs. However, whether it could improve the imaging quality and diagnostic performance for the patients with orbital tumors is still unknown. Purpose To compare the image quality and diagnostic performance of RS-EPI DWI with that of conventional single-shot EPI (SS-EPI) DWI in patients with orbital tumors. Material and Methods SS-EPI and RS-EPI DW images of 32 patients with pathologically diagnosed orbital tumors were retrospectively analyzed. Qualitative imaging parameters (imaging sharpness, geometric distortion, ghosting artifacts, and overall imaging quality) and quantitative imaging parameters (apparent diffusion coefficient [ADC], signal-to-noise ratio [SNR], contrast, and contrast-to-noise ratio [CNR]) were assessed by two independent radiologists, and compared between SS-EPI and RS-EPI DWI. Receiver operating characteristic curves were used to determine the diagnostic value of ADC in differentiating malignant from benign orbital tumors. Results RS-EPI DW imaging produced less geometric distortion and ghosting artifacts, and better imaging sharpness and overall imaging quality than SS-EPI DWI (for all, P < 0.001). Meanwhile, RS-EPI DWI produced significantly lower SNR ( P < 0.001) and ADC ( P < 0.001), and higher contrast ( P < 0.001) than SS-EPI DWI, while producing no difference in CNR ( P = 0.137). There was no significant difference on the diagnostic performance between SS-EPI and RS-EPI DWI, when using ADC as the differentiating index ( P = 0.529). Conclusion Compared with SS-EPI, RS-EPI DWI provided significantly better imaging quality and comparable diagnostic performance in differentiating malignant from benign orbital tumors.
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Morelli, John N., Megan R. Saettele, Rajesh A. Rangaswamy, Lan Vu, Clint M. Gerdes, Wei Zhang, and Fei Ai. "Echo Planar Diffusion-Weighted Imaging: Possibilities and Considerations with 12- and 32-Channel Head Coils." Journal of Clinical Imaging Science 2 (May 23, 2012): 31. http://dx.doi.org/10.4103/2156-7514.96548.

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Interest in clinical brain magnetic resonance imaging using 32-channel head coils for signal reception continues to increase. The present investigation assesses possibilities for improving diffusion-weighted image quality using a 32-channel in comparison to a conventional 12-channel coil. The utility of single-shot (ss) and an approach to readout-segmented (rs) echo planar imaging (EPI) are examined using both head coils. Substantial image quality improvements are found with rs-EPI. Imaging with a 32-channel head coil allows for implementation of greater parallel imaging acceleration factors or acquisition of scans at a higher resolution. Specifically, higher resolution imaging with rs-EPI can be achieved by increasing the number of readout segments without increasing echo-spacing or echo time to the degree necessary with ss-EPI — a factor resulting in increased susceptibility artifact and reduced signal-to-noise with the latter.
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Poser, Benedikt A., Markus Barth, Pål-Erik Goa, Weiran Deng, and V. Andrew Stenger. "Single-shot echo-planar imaging with Nyquist ghost compensation: Interleaved dual echo with acceleration (IDEA) echo-planar imaging (EPI)." Magnetic Resonance in Medicine 69, no. 1 (March 12, 2012): 37–47. http://dx.doi.org/10.1002/mrm.24222.

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An, He, Xiaodong Ma, Ziyi Pan, Hua Guo, and Elaine Yuen Phin Lee. "Qualitative and quantitative comparison of image quality between single-shot echo-planar and interleaved multi-shot echo-planar diffusion-weighted imaging in female pelvis." European Radiology 30, no. 4 (December 10, 2019): 1876–84. http://dx.doi.org/10.1007/s00330-019-06491-3.

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Abstract Objectives To qualitatively and quantitatively compare the image quality between single-shot echo-planar (SS-EPI) and multi-shot echo-planar (IMS-EPI) diffusion-weighted imaging (DWI) in female pelvis Methods This was a prospective study involving 80 females who underwent 3.0T pelvic magnetic resonance imaging (MRI). SS-EPI and IMS-EPI DWI were acquired with 3 b values (0, 400, 800 s/mm2). Two independent reviewers assessed the overall image quality, artifacts, sharpness, and lesion conspicuity based on a 5-point Likert scale. Regions of interest (ROI) were placed on the endometrium and the gluteus muscles to quantify the signal intensities and apparent diffusion coefficient (ADC). Signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and geometric distortion were quantified on both sequences. Inter-rater agreement was assessed using κ statistics and Kendall test. Qualitative scores were compared using Wilcoxon signed-rank test and quantitative parameters were compared with paired t test and Bland-Altman analysis. Results IMS-EPI demonstrated better image quality than SS-EPI for all aspects evaluated (SS-EPI vs. IMS-EPI: overall quality 3.04 vs. 4.17, artifacts 3.09 vs. 3.99, sharpness 2.40 vs. 4.32, lesion conspicuity 3.20 vs. 4.25; p < 0.001). Good agreement and correlation were observed between two reviewers (SS-EPI κ 0.699, r 0.742; IMS-EPI κ 0.702, r 0.789). IMS-EPI showed lower geometric distortion, SNR, and CNR than SS-EPI (p < 0.050). There was no significant difference in the mean ADC between the two sequences. Conclusion IMS-EPI showed better image quality with lower geometric distortion without affecting the quantification of ADC, though the SNR and CNR decreased due to post-processing limitations. Key Points • IMS-EPI showed better image quality than SS-EPI. • IMS-EPI showed lower geometric distortion without affecting ADC compared with SS-EPI. • The SNR and CNR of IMS-EPI decreased due to post-processing limitations.
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Ordidge, R. "The development of echo-planar imaging (EPI): 1977–1982." Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine 9, no. 3 (December 1999): 117–21. http://dx.doi.org/10.1007/bf02594607.

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Ordidge, R. "The development of echo-planar imaging (EPI): 1977–1982." Magnetic Resonance Materials in Biology, Physics, and Medicine 9, no. 3 (December 1999): 117–21. http://dx.doi.org/10.1016/s1352-8661(99)00056-3.

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Yoshizako, Takeshi, Rika Yoshida, Hiroya Asou, Megumi Nakamura, and Hajime Kitagaki. "Comparison between turbo spin-echo and echo planar diffusion-weighted imaging of the female pelvis with 3T MRI." Acta Radiologica Open 10, no. 2 (February 2021): 205846012199473. http://dx.doi.org/10.1177/2058460121994737.

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Background Echo-planar imaging (EPI)-diffusion-weighted imaging (DWI) may take unclear image affected by susceptibility, geometric distortions and chemical shift artifacts. Purpose To compare the image quality and usefulness of EPI-DWI and turbo spin echo (TSE)-DWI in female patients who required imaging of the pelvis. Material and Methods All 57 patients were examined with a 3.0-T MR scanner. Both TSE- and EPI-DWI were performed with b values of 0 and 1000 s/mm2. We compared geometric distortion, the contrast ratio (CR) of the myometrium to the muscle and the apparent diffusion coefficient (ADC) values for the myometrium and lesion. Two radiologists scored the TSE- and EPI-DWI of each patient for qualitative evaluation. Results The mean percent distortion was significantly smaller with TSE- than EPI-DWI ( p = 0.00). The CR was significantly higher with TSE- than EPI-DWI ( p = 0.003). There was a significant difference in the ADC value for the uterus and lesions between the EPI- and TSE-DWI ( p < 0.05). Finally, the ADC values of cancer were significantly different from those for the uterus and benign with both the two sequences ( p < 0.05). The scores for ghosting artifacts were higher with TSE- than EPI-DWI ( p = 0.019). But there were no significant differences between TSE- and EPI-DWI with regard to image contrast and overall image quality. Conclusion TSE-DWI on the female pelvis by 3T MRI produces less distortion and higher CR than EPI-DWI, but there is no difference in contrast and image quality.
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Chen, Nan-kuei, Koichi Oshio, and Lawrence P. Panych. "Improved image reconstruction for partial fourier gradient-echo echo-planar imaging (EPI)." Magnetic Resonance in Medicine 59, no. 4 (2008): 916–24. http://dx.doi.org/10.1002/mrm.21529.

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Dissertations / Theses on the topic "Echo planar imaging (EPI)"

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Bueno, Lucian Soares. "Aquisição rápida de imagens com técnicas tipo Echo Planar Imaging - Implementação das sequências EPI e SEPI." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/76/76132/tde-12112007-092645/.

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O objetivo deste trabalho é o desenvolvimento e implementação de metodologias de imagens por Ressonância Magnética Nuclear, para diminuição do tempo de aquisição, já que nos exames clínicos convencionais esse tempo é muito superior ao utilizado nessas seqüências, que é da ordem de T_ 2 , essas seqüências são baseadas na varredura única do espaço-k, convencionalmente denominada Echo Planar Imaging. Os propósitos de utilização dessa metodologia compreendem desde exames clínicos convencionais, em que se pretende analisar, em projetos futuros, eventos não periódicos de curta duração e a dinâmica dos sistemas biológicos estudados, até imagens de cavidades utilizando gases hiperpolarizados. As técnicas implementadas em comparação com as inicialmente propostas por Masfield apresentam uma diferença que é a inexistência do pulso de RF de inversão e, com isso, o tempo de duração das seqüências implementadas é ainda menor. Apenas não se deve esperar muito da qualidade das imagens sem o pós-processamento, uma vez que esse trabalho já está em andamento.
The objective of this work is the development and implementation of methodologies of images for Nuclear Magnetic Resonance, for reduction of the time of acquisition, since in the conventional clinical examinations this time is very superior to the used one in these sequences, that are of the order of T_ 2 , these sequences is based on the only sweepings of the space-k, conventionally called Echo Planar Imaging. The intentions of use of this methodology understand since conventional clinical examinations, where if it intends to analyze, in future projects, not periodic events of short duration and the dynamics of the biological systems studied, until socket images using hiperpolarizados gases. The techniques implemented in comparison with initially the proposals for Masfield present a difference that is the inexistence of the pulse of RF of inversion and, with this, the time of duration of the implemented sequences are still lesser. But if it does not have to wait very of the quality of the images without the after-processing, a time that this work already is in progress.
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Merrifield, Gavin David. "Assessment of MRI scanner performance for preclinical functional studies." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/17888.

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Functional Magnetic Resonance Imaging (fMRI) based studies are rapidly expanding in the field of preclinical research. The majority of these studies use Echo Planar Imaging (EPI) to measure Blood Oxygenation Level Dependent (BOLD) signal contrasts in the brain. In such studies the magnitude and statistical significances of these contrasts are then related to brain function and cognition. It is assumed that any observed signal contrast is ultimately due to differences in biological state and that scanner performance is stable and repeatable between subjects and studies. However, due to confounding issues introduced by in vivo subjects, little work has been undertaken to test this basic assumption. As the BOLD signal contrasts generated in such experiments are often very low, even small changes in scanner performance may dominate the BOLD contrast, distorting any biological conclusions drawn. A series of fMRI phantoms were produced to measure scanner performance independent of biological subjects. These phantoms produce specified signal contrast levels on demand during an fMRI scan by means of current-induced magnetic field gradients. These were used to generate data sets that emulated the BOLD signal contrast of in vivo imaging. Two studies examining scanner performance were then conducted on high-field preclinical MRI scanners. Firstly, in a longitudinal study on a single scanner, measurements were taken over a number of days across a week long period and then every two months over a year long period. Secondly, the behaviour of four preclinical scanners (three at 7T, one at 9.4T) was comparatively assessed. Measurements of several imaging parameters including contrast generated and functional contrast to noise ratio (fCNR) were obtained in both studies. If the scanners involved are truly comparable then they should generate similar measurement values. Across both studies parameter measurements showed significant differences for identical contrast settings on the phantom. Although signal contrast itself proved very comparable across the studies fCNR proved to be highly variable. As well as these measurements of longer tem behaviour proving variable, short and mid-term signal stability displayed a wide range of variability. Variations in the level and quality of both signal and noise were observed. Modelling of signal changes based on fundamental physical principles was also performed for comparison. The impact of these behaviours and variations on in vivo studies could result in skewed biological conclusions at any single site, with some sites exhibiting greater problems than others. The multisite results suggest potential difficulties when comparing biological conclusions between sites, even when using identical imaging parameters. In summary, these results suggest that a cautious approach should be taken with the conclusions of both fMRI and associated resting state connectivity studies that use EPI as their acquisition sequence. Improvements to both the experimental design of studies and regular quality monitoring of scanners should be undertaken to minimise these effects. Clinical MRI scanners should also be assessed for similar aberrations in behaviour.
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Schütze, Gunther [Verfasser], Michael [Akademischer Betreuer] Knauth, and Dorothee [Akademischer Betreuer] Wachter. "Magnetresonanz (MR)-tomographische Erfassung der fortgeleiteten zentralvenösen Pulskurve in den duralen venösen Sinus mittels zeitlich hoch aufgelöster Echo-Planar-Imaging (EPI)-Technik / Gunther Schütze. Gutachter: Michael Knauth ; Dorothee Wachter. Betreuer: Michael Knauth." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://d-nb.info/1044073810/34.

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Symms, Mark Roger. "Spin preparation sequences for echo-planar imaging." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334793.

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Fisico, Alfredo Odon Rodriguez Ingeniero. "Determination of flow with echo-planar imaging." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363605.

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Aletras, Anthony Homer. "Ultra-Fast Imaging with Echo Planar Techniques /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487933245538532.

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Freeman, Alan John. "Measurement of physiological parameters with echo-planar imaging." Thesis, University of Nottingham, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262655.

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Howseman, A. M. "High speed NMR imaging using echo-planar techniques." Thesis, University of Nottingham, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233714.

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Frost, Stephen Robert. "Diffusion-weighted magnetic resonance imaging with readout-segmented echo-planar imaging." Thesis, University of Oxford, 2012. https://ora.ox.ac.uk/objects/uuid:94421cdc-6bcb-49c2-b9d9-64e016b875f8.

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Diffusion-weighted (DW) magnetic resonance imaging is an important neuroimaging technique that has successful applications in diagnosis of ischemic stroke and methods based on diffusion tensor imaging (DTI). Tensor measures have been used for detecting changes in tissue microstructure and for non-invasively tracing white matter connections in vivo. The most common image acquistion strategy is to use a DW single-shot echo-planar imaging (ss-EPI) pulse sequence, which is attractive due to its robustness to motion artefacts and high imaging speed. However, this sequence has limited achievable spatial resolution and suffers from geometric distortion and blurring artefacts. Readout-segmented echo-planar imaging (rs-EPI) is a DW sequence that is capable of acquiring high-resolution images by segmenting the acquisition of k- space into multiple shots. The fast, short readouts reduce distortion and blurring and the problem of artefacts due to motion-induced phase changes between shots can be overcome with navigator techniques. The rs-EPI sequence has two main shortcomings. (i) The method is slow to produce image volumes, which is limiting for clinical scans due to patient welfare and prevents us from acquiring very many directions in DTI. (ii) The sequence (like other diffusion techniques) is far from the optimum repetition time (TR) for acquiring data with the highest possible signal-to-noise ratio (SNR) in a given time. The work in this thesis seeks to address both of these important issues using a range of approaches. In Chapter 4 a partial Fourier extension is presented, which addresses point (i) by reducing the number of readout segments acquired and estimating the missing data. This allows reductions in scan time by approximately 40% and the reliability of the images is demonstrated in comparisons with the original images. The application of a simultaneous multi-slice scheme to rs-EPI, to address points (i) and (ii), is described in Chapter 5. Using the slice-accelerated rs-EPI sequence, tractography data were compared to ss-EPI data and high-resolution trace-weighted data were acquired in clinically relevant scan times. Finally, a 3D multi-slab extension that addresses point (i) is presented in Chapter 6. A 3D sequence could also allow higher resolution in the slice direction than 2D multi-slice methods, which are limited by the difficulties in exciting thin, accurate slices. A 3D version of rs-EPI was simulated and implemented and a k-space acquisition synchronised to the cardiac cycle showed substantial improvements in image artefacts compared to a conventional k-space acquisition.
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Boulby, Philip Andrew. "The assessment of gastrointestinal physiology by echo-planar imaging." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267154.

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Books on the topic "Echo planar imaging (EPI)"

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Schmitt, Franz, Michael K. Stehling, and Robert Turner. Echo-Planar Imaging. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4.

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Hansch, Ernst Christian. A study of movement detection in functional echo-planar imaging of the brain. [New Haven, Conn: s.n.], 1994.

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1953-, Schmitt F., Stehling M. K. 1961-, Turner R. 1946-, and Bandettini P. A, eds. Echo-planar imaging: Theory, technique, and application. Berlin: Springer, 1998.

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(undifferentiated), Robert Turner, Franz Schmitt, and Michael K. Stehling. Echo-planar imaging: Theory, technique and application. Springer, 1998.

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Mansfield, P., Turner Robert, Franz Schmitt, and Michael K. Stehling. Echo-Planar Imaging: Theory, Technique and Application. Springer London, Limited, 2012.

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Echo-planar imaging: Theory, technique and application. Berlin: Springer, 2013.

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Book chapters on the topic "Echo planar imaging (EPI)"

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Ellenbroek, Bart, Alfonso Abizaid, Shimon Amir, Martina de Zwaan, Sarah Parylak, Pietro Cottone, Eric P. Zorrilla, et al. "Echo-Planar Imaging." In Encyclopedia of Psychopharmacology, 455. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68706-1_1347.

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Runge, Val M., and Johannes T. Heverhagen. "Echo Planar Imaging." In The Physics of Clinical MR Taught Through Images, 90–91. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85413-3_42.

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Stehling, M. K., R. Brüning, and B. R. Rosen. "Perfusion Imaging with Echo-Planar Imaging." In Echo-Planar Imaging, 419–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_13.

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Turner, R. "Diffusion Imaging with Echo-Planar Imaging." In Echo-Planar Imaging, 311–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_9.

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Müller, M. F., and P. V. Prasad. "Abdominal Diffusion Imaging Using Echo-Planar Imaging." In Echo-Planar Imaging, 371–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_11.

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Turner, R., F. Schmitt, and M. K. Stehling. "The Historical Development of Echo-Planar Magnetic Resonance Imaging." In Echo-Planar Imaging, 1–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_1.

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Reimer, P., and R. Ladebeck. "Echo-Planar Imaging of the Abdomen." In Echo-Planar Imaging, 325–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_10.

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Firmin, D. N., and B. P. Poncelet. "Echo-Planar Imaging of the Heart." In Echo-Planar Imaging, 389–418. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_12.

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Siewert, B., and S. Warach. "Clinical Applications of Neuroimaging Using Echo-Planar Imaging." In Echo-Planar Imaging, 465–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_14.

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Bandettini, P. A., and E. C. Wong. "Echo-Planar Magnetic Resonance Imaging of Human Brain Activation." In Echo-Planar Imaging, 493–530. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-80443-4_15.

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Conference papers on the topic "Echo planar imaging (EPI)"

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Garma-Oehmichen, Alejandro, Kathya P. Acuna-Luna, and Alejandro Santos-Diaz. "Evaluation of Echo Planar Imaging (EPI) Distortion Correction using Synb0-DisCo and Reversed Phase Encoding Acquisition." In 2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC). IEEE, 2021. http://dx.doi.org/10.1109/embc46164.2021.9630596.

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Mechefske, Chris K. "Acoustic Noise Reduction Liner for a 4T MRI Scanner." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84245.

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High-field, high-speed Magnetic Resonance Imaging (MRI) can generate high levels of acoustic noise. There is ongoing concern in the medical and imaging research communities regarding the detrimental effects of high acoustic levels on auditory function, patient anxiety, verbal communication between patients and health care workers and ultimately MR image quality. In order to effectively suppress the noise levels inside MRI scanners, the sound field needs to be accurately measured and characterized. This paper presents the results of measurements of the sound radiation from a gradient coil cylinder within a 4 Tesla MRI scanner under a variety of conditions. These measurement results show; 1) that noise levels can be significantly reduced through the use of an appropriately designed passive acoustic liner, and 2) the true noise levels that are experienced by patients during echo planer imaging (EPI).
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Kashmar, George C., and Orhan Nalcioglu. "Four- and eight-echo diagonal interleaved echo planar scanning." In Medical Imaging '90, Newport Beach, 4-9 Feb 90, edited by Roger H. Schneider. SPIE, 1990. http://dx.doi.org/10.1117/12.18793.

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NessAiver, Moriel S., Ning Li, Tulay Adali, and Terry M. Turpin. "Optical reconstruction of echo planar MRI data sets." In Medical Imaging 1997, edited by Richard L. Van Metter and Jacob Beutel. SPIE, 1997. http://dx.doi.org/10.1117/12.273991.

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Bammer, Roland, Manfred J. Augustin, Thomas Seifert, S. Strasser-Fuchs, Rudolf Stollberger, Paul Wach, H. P. Hartung, and F. Fazekas. "High-resolution diffusion tensor imaging using interleaved echo-planar imaging." In Medical Imaging 2000, edited by Chin-Tu Chen and Anne V. Clough. SPIE, 2000. http://dx.doi.org/10.1117/12.383386.

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Soumekh, Mehrdad. "An Efficient Scanning/Sampling Method for Echo Planar Magnetic Resonance Imaging." In 1989 Medical Imaging, edited by Samuel J. Dwyer III, R. Gilbert Jost, and Roger H. Schneider. SPIE, 1989. http://dx.doi.org/10.1117/12.953296.

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Liao, Congyu, Xiaozhi Cao, Jaejin Cho, Zijing Zhang, Kawin Setsompop, and Berkin Bilgic. "Highly efficient MRI through multi-shot echo planar imaging." In Wavelets and Sparsity XVIII, edited by Yue M. Lu, Manos Papadakis, and Dimitri Van De Ville. SPIE, 2019. http://dx.doi.org/10.1117/12.2527183.

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LaRoque, Samuel J., Emil Y. Sidky, and Xiaochuan Pan. "Image Reconstruction from Sparse Data in Echo-Planar Imaging." In 2006 IEEE Nuclear Science Symposium Conference Record. IEEE, 2006. http://dx.doi.org/10.1109/nssmic.2006.356547.

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Lin, Zhenliang, Qikang Li, Rui Wang, Guobin Li, and Jie Luo. "Optimization of Acoustic Noise for Single-Shot Echo-Planar Imaging by Varying Echo Spacing." In ICBBE '20: 2020 7th International Conference on Biomedical and Bioinformatics Engineering. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3444884.3444895.

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Saito, Hisateru, Noriyuki Okinaka, Yoshikazu Kitahama, Yoshiaki Aoki, and Naoyuki Kayukawa. "Magnetic Resonance Imaging of combustion MHD plasma with modified echo planar imaging." In 30th Plasmadynamic and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-3487.

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Reports on the topic "Echo planar imaging (EPI)"

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Thomas, Michael A. Echo-Planar Imaging Based J-Resolved Spectroscopic Imaging for Improved Metabolite Detection in Prostate Cancer. Fort Belvoir, VA: Defense Technical Information Center, October 2012. http://dx.doi.org/10.21236/ada567967.

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Thomas, Michael A. Echo-Planar Imaging Based J-Resolved Spectroscopic Imaging for Improved Metabolite Detection in Prostate Cancer. Fort Belvoir, VA: Defense Technical Information Center, October 2013. http://dx.doi.org/10.21236/ada594378.

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