Article
Radiology, Nuclear Medicine & Medical Imaging
Ruitian Song, Scott N. N. Hwang, Chris Goode, Diana Storment, Matthew Scoggins, Zachary Abramson, Claudia M. M. Hillenbrand, Belinda Mandrell, Kevin Krull, Wilburn E. E. Reddick
Summary: The 2-point DIXON method is limited in accurately assessing fat fractions in the tongue and surrounding tissues, and the more accurate GOOSE method is recommended for estimating FF.
INVESTIGATIVE RADIOLOGY
(2022)
Article
Radiology, Nuclear Medicine & Medical Imaging
Martin Soellradl, Johannes Strasser, Andreas Lesch, Rudolf Stollberger, Stefan Ropele, Christian Langkammer
Summary: The adaptive slice-specific compensation gradients method improved the SNR of R2* maps in 2D spoiled multi-echo gradient-echo sequences by balancing the compensation gradients and macroscopic field gradients. Compared with the global z-shimming approach, the proposed method provided a broader range of compensated macroscopic field gradients, resulting in higher SNR.
MAGNETIC RESONANCE IN MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Lu Chen, Hao Hu, Huan-Huan Chen, Wen Chen, Qian Wu, Fei-Yun Wu, Xiao-Quan Xu
Summary: Comparison between two-point Dixon T2WI and conventional fat-sat T2WI in patients with thyroid-associated ophthalmopathy (TAO) showed that Dixon T2WI offered better image quality, staging sensitivity, and specificity. Dixon-EOM-SIR alone demonstrated the highest staging sensitivity, while combining with Dixon-IF-WF showed improved staging efficiency and specificity. Dixon T2WI is recommended for evaluating TAO patients in clinical practice.
BRITISH JOURNAL OF RADIOLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Min-Jie Zhou, Ju-Wei Shao, Jian Pu, Shu-Tian Xiang, Yi Liang, Qian He, Wei Su, Cheng Liu
Summary: The study evaluated preretinal oxygen tension in diabetes patients without hypertension using 3D-SPGR echo MRI, and found a correlation between DR and changes in preretinal oxygen tension. This technology can be used as an indicator for early DR diagnosis.
BMC MEDICAL IMAGING
(2022)
Article
Cardiac & Cardiovascular Systems
Qing Fu, Zi-qiao Lei, Jing-yang Li, Jia-wei Wu, Xiao-ming Liu, Wen-liang Fan, Peng Sun, Jia-zheng Wang, Ding-xi Liu, Fan Yang, Chuan-sheng Zheng, Xiang-chuang Kong
Summary: This study aimed to compare the feasibility and clinical utility of a compressed-sensing-accelerated subtractionless whole-body MRA (CS-WBMRA) protocol with conventional dual-pass subtraction-based whole-body MRA (conventional-WBMRA) and computed tomography angiography (CTA) for suspected arterial diseases. The results showed that CS-WBMRA performed better in terms of image quality, speed, and contrast agent usage than conventional-WBMRA and CTA.
JOURNAL OF CARDIOVASCULAR MAGNETIC RESONANCE
(2023)
Article
Multidisciplinary Sciences
Yanli Jiang, Jie Zou, Fengxian Fan, Pin Yang, Laiyang Ma, Tiejun Gan, Shaoyu Wang, Jing Zhang
Summary: This study investigated the association between liver proton density fat fraction (PDFF) and serum biomarkers and liver fibrosis stages using multi-echo Dixon (ME-Dixon) and breath-hold single-voxel high-speed T2-corrected multi-echo H-1 magnetic resonance spectroscopy (HISTO) at 1.5 T. The study included 75 patients suspected of liver fibrosis and 23 healthy participants. PDFF was compared among liver fibrosis stages and correlated with serum fat biomarkers. Both ME-Dixon and HISTO sequences measured liver fat content noninvasively, which was not directly associated with liver fibrosis stages.
SCIENTIFIC REPORTS
(2023)
Article
Gastroenterology & Hepatology
Guang-Zi Shi, Hong Chen, Wei-Ke Zeng, Ming Gao, Meng-Zhu Wang, Hui-Ting Zhang, Jun Shen
Summary: R2* derived from multi-echo Dixon imaging, whether measured by 2D-ROI or VOI, can assist in differentiating between benign and malignant focal liver lesions (FLLs) with excellent reproducibility and stability. The diagnostic performance of R2* was not significantly different between the 2D-ROI and VOI methods, indicating the potential clinical utility of R2* in differentiating benign and malignant FLLs.
WORLD JOURNAL OF GASTROENTEROLOGY
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Kewen Liu, Xiaojun Li, Zhao Li, Yalei Chen, Hongxia Xiong, Fang Chen, Qinjia Bao, Chaoyang Liu
Summary: The newly designed MEBCRN network effectively learns the correlations between consecutive echoes and achieves accurate water-fat separation in different imaging regions.
MAGNETIC RESONANCE IN MEDICINE
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Robert R. Edelman, Matthew Walker, William J. Ankenbrandt, Nondas Leloudas, Jianing Pang, Julian Bailes, George Bobustuc, Ioannis Koktzoglou
Summary: The purpose of this study was to test the hypothesis that Dixon uT(1)RESS would significantly improve the visibility of brain tumors compared with MPRAGE. The results showed that Dixon uT(1)RESS improved the visibility of brain tumors and outperformed MPRAGE in detecting metastatic disease, vascular invasion, and dural involvement.
INVESTIGATIVE RADIOLOGY
(2023)
Article
Medicine, General & Internal
Seun-Ah Lee, Sang-Won Jo, Suk-Ki Chang, Ki-Han Kwon
Summary: The study demonstrates that the T1 BB-FSE sequence is significantly superior to the CE-GRE sequence in terms of diagnostic performance, qualitative and quantitative analysis in patients with facial neuritis.
JOURNAL OF CLINICAL MEDICINE
(2021)
Article
Multidisciplinary Sciences
Fan Zhao, Genming Zhang, Zhongjian Tan, Tengxiao Liang, Fangliang Xing
Summary: This study presents a 3D quantification methodology using Dixon MRI image analysis to evaluate the distribution of liver fat fraction. The method is non-invasive and accurate, applicable to both healthy livers and fatty livers. By extracting the 3D structure of the liver, it visualizes and quantifies the differences in liver fat content.
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2023)
Article
Medicine, General & Internal
Kai Huang, Xiaoxin Lin, Yaosheng Luo, Qiugen Hu, Baoliang Guo, Fusheng Ouyang, Yufeng Ouyang, Cheng Song, Haixiong Chen
Summary: This study compared two MRI techniques, Dixon and SPAIR, in terms of image quality and suitability for evaluating thyroid-associated ophthalmopathy (TAO) lesions. The results showed that Dixon-T2WI had higher image quality and suitability than SPAIR-T2WI, and it had a stronger ability to evaluate TAO inflammation with higher sensitivity and specificity.
FRONTIERS IN MEDICINE
(2023)
Article
Physics, Multidisciplinary
Christoph Zoellner, Sophia Kronthaler, Kilian Weiss, Christof Boehm, Jonathan Stelter, Juergen Rahmer, Peter Boernert, Johannes M. Peeters, Daniela Junker, Dimitrios C. Karampinos
Summary: This study proposed a retrospective trajectory correction method based on gradient modulation transfer function (GMTF) measurement to predict and correct gradient chain induced k-space trajectory errors. Experimental results showed that the GMTF correction effectively reduced PDFF quantification errors and improved liver PDFF estimation.
FRONTIERS IN PHYSICS
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Yu Shi, Ya-fei Qi, Gong-yu Lan, Qijun Wu, Bing Ma, Xian-yi Zhang, Ruo-yun Ji, Yu-jia Ma, Yang Hong
Summary: The study evaluated the value of multiparametric three-dimensional MR elastography in chronic hepatitis B and C, showing its potential in detecting early necroinflammation, distinguishing necroinflammation from liver fibrosis, and correlating with hepatic venous pressure gradient.
Article
Engineering, Electrical & Electronic
Taotao Huang, Haiwen Liu, Hao Xu, Li Geng
Summary: In this communication, a 3-D printed circularly polarized filtering antenna for 5G mm-wave applications is presented. The antenna utilizes a composite resonator and a polarizer to achieve desired linearly polarized and circularly polarized radiation, respectively. Experimental results show that the fabricated antennas exhibit good performance in terms of return loss and axial ratio bandwidths.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Editorial Material
Radiology, Nuclear Medicine & Medical Imaging
Jeong Hee Yoon
JOURNAL OF MAGNETIC RESONANCE IMAGING
(2023)
Editorial Material
Radiology, Nuclear Medicine & Medical Imaging
Mark A. Anderson, Marie-Pierre Vullierme, Jeong Hee Yoon, Giulia A. Zamboni
AMERICAN JOURNAL OF ROENTGENOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jae Hyun Kim, Jeong Hee Yoon, Jae Seok Bae, Sungeun Park, Seungchul Han, Jeong Min Lee
Summary: The study compared compressed sensing (CS) and view sharing (VS) techniques for multiarterial phase imaging in patients at high risk for hepatocellular carcinoma (HCC). The results showed that CS technique provided better image quality and observation detectability compared to VS technique.
INVESTIGATIVE RADIOLOGY
(2023)
Article
Cardiac & Cardiovascular Systems
Joo Myung Lee, Hyun Kuk Kim, Keun Ho Park, Eun Ho Choo, Chan Joon Kim, Seung Hun Lee, Min Chul Kim, Young Joon Hong, Sung Gyun Ahn, Joon-Hyung Doh, Sang Yeub Lee, Sang Don Park, Hyun-Jong Lee, Min Gyu Kang, Jin-Sin Koh, Yun-Kyeong Cho, Chang-Wook Nam, Bon-Kwon Koo, Bong-Ki Lee, Kyeong Ho Yun, David Hong, Hyun Sung Joh, Ki Hong Choi, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo-Yong Hahn, FRAME AMI Invest
Summary: For patients with acute myocardial infarction and multivessel coronary artery disease, FFR-guided PCI is superior to angiography-guided PCI in reducing the risk of death or myocardial infarction.
EUROPEAN HEART JOURNAL
(2023)
Article
Cardiac & Cardiovascular Systems
Coen K. M. Boerhout, Guus A. de Waard, Joo Myung Lee, Hernan Mejia-Renteria, Seung Hun Lee, Ji-Hyun Jung, Masahiro Hoshino, Mauro Echavarria-Pinto, Martijn Meuwissen, Hitoshi Matsuo, Maribel Madera-Cambero, Ashkan Eftekhari, Mohamed A. Effat, Tadashi Murai, Koen Marques, Joon-Hyung Doh, Evald H. Christiansen, Rupak Banerjee, Chang-Wook Nam, Giampaolo Niccoli, Masafumi Nakayama, Nobuhiro Tanaka, Eun-Seok Shin, Steven A. J. Chamuleau, Niels van Royen, Paul Knaapen, Javier Escaned, Tsunekazu Kakuta, Bon Kwon Koo, Jan J. Piek, Tim P. van de Hoef
Summary: The study aimed to evaluate the diagnostic and prognostic value of non-hyperemic Pd/Pa and its additional value when combined with hyperemic pressure ratio (FFR) to guide revascularization. A total of 2141 patients with physiological data in 2726 vessels were included in a retrospective registry. Abnormal pressure ratios in both non-hyperemic and hyperemic conditions were found to have important prognostic value. The combined use of FFR and non-hyperemic Pd/Pa efficiently identified vessels with concordant normal pressure ratios and excellent long-term clinical outcomes.
INTERNATIONAL JOURNAL OF CARDIOLOGY
(2023)
Article
Cardiac & Cardiovascular Systems
David Hong, Seung Hun Lee, Doosup Shin, Ki Hong Choi, Hyun Kuk Kim, Sang Jin Ha, Hyun Sung Joh, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Joo-Yong Hahn, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo Myung Lee
Summary: This study evaluated the association between cardiac diastolic dysfunction and coronary microvascular dysfunction (CMD) in patients without significant left ventricular systolic dysfunction and epicardial coronary stenosis. The study found that CMD was independently associated with cardiac diastolic dysfunction and both were associated with an increased risk of cardiovascular death or admission for heart failure.
JOURNAL OF THE AMERICAN HEART ASSOCIATION
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jae Hyun Kim, Jeong Hee Yoon, Ijin Joo, Jeong Min Lee
Summary: This study compared two different two-dimensional shear wave elastography techniques, PWI and MB imaging, for evaluating liver fibrosis. The results showed that the MB technique is more reliable for long-term follow-up, suggesting its preference in assessing liver fibrosis in chronic liver disease patients.
Article
Oncology
Jeongin Yoo, Jeong Min Lee, Ijin Joo, Dong Ho Lee, Jeong Hee Yoon, Mi Hye Yu, Jin-Young Jang, Sang Hyub Lee
Summary: This study aimed to determine if the addition of PET/MRI and CA 19-9 to CECT can improve the accuracy of predicting resectability and prognosis in PDAC patients. The results showed that the combination of CECT, PET, and CA 19-9 increased the AUC and sensitivity for determining resectability without compromising specificity. Additionally, FDG avidity on post-NAT PET and pathologically confirmed vascular invasion predicted recurrence-free survival in PDAC patients.
Article
Radiology, Nuclear Medicine & Medical Imaging
Christiane Kuhl, Tibor Csoszi, Wojciech Piskorski, Tomasz Miszalski, Jeong-Min Lee, Pamela M. Otto
Summary: This study compared the effectiveness of Gadopiclenol and Gadobutrol for lesion visualization in body MRI. The results showed that Gadopiclenol at a dose of 0.05 mmol/kg was comparable to Gadobutrol at a dose of 0.1 mmol/kg in terms of lesion evaluation, and both had a similar safety profile.
Review
Radiology, Nuclear Medicine & Medical Imaging
Hyo-Jin Kang, Jeong Min Lee, Se Woo Kim
Summary: Contrast-enhanced ultrasonography (CEUS) is a noninvasive imaging modality used for diagnosing hepatocellular carcinoma (HCC) without the need for pathological confirmation. Different contrast agents, such as SonoVue and Sonazoid, are available for CEUS imaging. Major guidelines recognize CEUS as a reliable method for HCC diagnosis, but the choice of contrast agent varies. This review provides a comparative overview of the pharmacokinetic features, examination protocols, diagnostic criteria, and potential applications of these contrast agents in the HCC diagnostic algorithm.
Meeting Abstract
Cardiac & Cardiovascular Systems
Marina Piccinelli, Joo Myung Lee, C. David Cooke, Jonathon Nye, Sang-Geon Cho, Bon Kwon Koo, Hee-Seung Bom, Ernest V. Garcia
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Junghoan Park, Jae Seok Bae, Jong-Min Kim, Joseph Nathanael Witanto, Sang Joon Park, Jeong Min Lee
Summary: This study aimed to develop a deep-learning model for classifying LI-RADS major features using subtraction MRI images. The model showed satisfactory performance in both HCC segmentation and LI-RADS major feature classification.
ABDOMINAL RADIOLOGY
(2023)
Meeting Abstract
Cardiac & Cardiovascular Systems
Bon-Kwon Koo, Doyeon Hwang, Jaewook Chung, Joo Myung Lee, Hyunjong Lee, Chang-Wook Nam, Eun-Seok Shin, Joon-Hyung Doh, Akiko Matsuo, Hitoshi Matsuo, Shao-Liang Chen
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
(2023)
Article
Cardiac & Cardiovascular Systems
Sonali Kumar, David Molony, Sameer Khawaja, Kaylyn Crawford, Elizabeth W. Thompson, Olivia Hung, Imran Shah, Jessica Navas-Simbana, Arlen Ho, Arnav Kumar, Yi-An Ko, Hossein Hosseini, Adrien Lefieux, Joo Myung Lee, Joo-Yong Hahn, Shao-Liang Chen, Hiromasa Otake, Takashi Akasaka, Eun-Seok Shin, Bon-Kwon Koo, Goran Stankovic, Dejan Milasinovic, Chang-Wook Nam, Ki-Bum Won, Javier Escaned, Andrejs Erglis, Yoshinobu Murasato, Alessandro Veneziani, Habib Samady
Summary: Coronary stent underexpansion is associated with restenosis and stent thrombosis. High wall shear stress (WSS) has been linked to prothrombotic pathways activation, matrix metalloproteinases upregulation, and future myocardial infarction in atherosclerosis studies. This study aimed to investigate the relationship between stent underexpansion and WSS. The results showed that frames with stent underexpansion were more likely to exhibit high WSS, while no significant association was found between underexpansion and low WSS or between underexpansion and stent platform.
INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jae Seok Bae, Jeong Min Lee, Se Woo Kim, Sungeun Park, Seungchul Han, Jeong Hee Yoon, Ijin Joo, Hyunsook Hong
Summary: Low-contrast-dose CT using dual-energy CT and deep learning-based denoising techniques is effective in patients at high risk of hepatocellular carcinoma (HCC). The study found that a 40% reduction in contrast medium dose can be achieved with low-contrast-dose CT without impairing HCC conspicuity when using 50-keV and DLD techniques.
EUROPEAN RADIOLOGY
(2023)