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Investigative magnetic resonance imaging最新文献

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Improving delineation of the corticospinal tract in the monkey brain scanned with conventional DTI by using a compressed sensing based algorithm. 使用基于压缩传感的算法改进用传统 DTI 扫描的猴脑皮质脊髓束的划分。
Investigative magnetic resonance imaging Pub Date : 2022-12-01 Epub Date: 2022-12-31 DOI: 10.13104/imri.2022.26.4.265
Yuguang Meng, Chun-Xia Li, Xiaodong Zhang
{"title":"Improving delineation of the corticospinal tract in the monkey brain scanned with conventional DTI by using a compressed sensing based algorithm.","authors":"Yuguang Meng, Chun-Xia Li, Xiaodong Zhang","doi":"10.13104/imri.2022.26.4.265","DOIUrl":"10.13104/imri.2022.26.4.265","url":null,"abstract":"<p><strong>Background: </strong>The corticospinal tract (CST) is a major tract for motor function. It can be impaired by stroke. Its degeneration is associated with stroke outcome. Diffusion tensor imaging (DTI) tractography plays an important role in assessing fiber bundle integrity. However, it is limited in detecting crossing fibers in the brain. The crossing fiber angular resolution of intra-voxel structure (CFARI) algorithm shows potential to resolve complex fibers in the brain. The objective of the present study was to improve delineation of CST pathways in monkey brains scanned by conventional DTI.</p><p><strong>Methods: </strong>Healthy rhesus monkeys were scanned by diffusion MRI with 128 diffusion encoding directions to evaluate the CFARI algorithm. Four monkeys with ischemic occlusion were also scanned with DTI (b = 1000 s/mm<sup>2</sup>, 30 diffusion directions) at 6, 48, and 96 hours post stroke. CST fibers were reconstructed with DTI and CFARI-based tractography and evaluated. A two-way repeated MANOVA was used to determine significances of changes in DTI indices, tract number, and volumes of the CST between hemispheres or post-stroke time points.</p><p><strong>Results: </strong>CFARI algorithm revealed substantially more fibers originated from the ventral premotor cortex in healthy and stroke monkey brains than DTI tractography. In addition, CFARI showed better sensitivity in detecting CST abnormality than DTI tractography following stroke.</p><p><strong>Conclusion: </strong>CFARI significantly improved delineation of the CST in the brain scanned by DTI with 30 gradient directions. It showed better sensitivity in detecting abnormity of the CST following stroke. Preliminary results suggest that CFARI could facilitate prediction of function outcomes after stroke.</p>","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"26 4","pages":"265-274"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9873154/pdf/nihms-1864509.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10581671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arterial Spin Labelling-Based Blood-Brain Barrier Assessment and Its Applications. 基于动脉自旋标记的血脑屏障评估及其应用
Investigative magnetic resonance imaging Pub Date : 2022-12-01 Epub Date: 2022-12-31 DOI: 10.13104/imri.2022.26.4.229
Yiran Li, Alishba Sadiq, Ze Wang
{"title":"Arterial Spin Labelling-Based Blood-Brain Barrier Assessment and Its Applications.","authors":"Yiran Li, Alishba Sadiq, Ze Wang","doi":"10.13104/imri.2022.26.4.229","DOIUrl":"10.13104/imri.2022.26.4.229","url":null,"abstract":"<p><p>The brain relies on the blood-brain barrier (BBB) for the selective absorption of nutrients and the exclusion of other big molecules from the circulating blood. Therefore, the integrity of BBB is critical to brain health, and assessing BBB condition is of great clinical importance. BBB is often examined using exogenous tracers that can travel across the BBB, but the tracers might cause severe side effects. To avoid the use of external tracers, researchers have used magnetically labeled arterial blood as the endogenous tracer to assess the water permeability of BBB as a surrogate index of BBB. This paper reviews the three major types of Arterial Spin Labelling (ASL) based BBB water permeability assessment techniques and their applications in brain diseases such as Alzheimer's Disease.</p>","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"26 4","pages":"229-236"},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9851084/pdf/nihms-1863399.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10618694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuberculous Epididymo-Orchitis with Multifocal Extrapulmonary Tuberculosis: a Case Report 结核性附睾-睾丸炎合并多灶性肺外结核1例
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.1.71
JI-JIANG An, K. Kim
{"title":"Tuberculous Epididymo-Orchitis with Multifocal Extrapulmonary Tuberculosis: a Case Report","authors":"JI-JIANG An, K. Kim","doi":"10.13104/imri.2022.26.1.71","DOIUrl":"https://doi.org/10.13104/imri.2022.26.1.71","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66637532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimization of Scan Parameters for in vivo Hyperpolarized Carbon-13 Magnetic Resonance Spectroscopic Imaging 体内超极化碳-13磁共振成像扫描参数的优化
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.2.125
Nguyen-Trong Nguyen, Onila Rasanjala, I. Park
{"title":"Optimization of Scan Parameters for in vivo Hyperpolarized Carbon-13 Magnetic Resonance Spectroscopic Imaging","authors":"Nguyen-Trong Nguyen, Onila Rasanjala, I. Park","doi":"10.13104/imri.2022.26.2.125","DOIUrl":"https://doi.org/10.13104/imri.2022.26.2.125","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66637727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Deep Learning Applications in Perfusion MRI: Recent Advances and Current Challenges 深度学习在灌注MRI中的应用:最新进展和当前挑战
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.4.246
K. Choi
{"title":"Deep Learning Applications in Perfusion MRI: Recent Advances and Current Challenges","authors":"K. Choi","doi":"10.13104/imri.2022.26.4.246","DOIUrl":"https://doi.org/10.13104/imri.2022.26.4.246","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66638180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Comparison of 2D Thin Section Dixon, 3D Isotropic SPACE, and 2D T2-Weighted Sequences in Ankle MRI 二维Dixon薄片、三维各向同性SPACE和二维t2加权序列在踝关节MRI中的比较
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.4.284
Tae Ran Ahn, Y. Jeong, J. Jeon, So Hyun Park, Sheen-Woo Lee
{"title":"Comparison of 2D Thin Section Dixon, 3D Isotropic SPACE, and 2D T2-Weighted Sequences in Ankle MRI","authors":"Tae Ran Ahn, Y. Jeong, J. Jeon, So Hyun Park, Sheen-Woo Lee","doi":"10.13104/imri.2022.26.4.284","DOIUrl":"https://doi.org/10.13104/imri.2022.26.4.284","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66638391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clinical Significance and Characteristics of Newly Detected Lesions on Breast MRI During Neoadjuvant Chemotherapy 新辅助化疗期间乳腺MRI新发现病灶的临床意义及特点
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.4.303
Kyeyoung Lee, K. J. Nam, K. Choo, S. Nam, Hyun Yul Kim, Y. Jung, Jae-Joon Kim, J. Joo, J. Kim, Ji Won Lee, Jae-Yeon Hwang, Chankue Park
{"title":"Clinical Significance and Characteristics of Newly Detected Lesions on Breast MRI During Neoadjuvant Chemotherapy","authors":"Kyeyoung Lee, K. J. Nam, K. Choo, S. Nam, Hyun Yul Kim, Y. Jung, Jae-Joon Kim, J. Joo, J. Kim, Ji Won Lee, Jae-Yeon Hwang, Chankue Park","doi":"10.13104/imri.2022.26.4.303","DOIUrl":"https://doi.org/10.13104/imri.2022.26.4.303","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66638542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hepatic Angiomyolipoma Presenting as a Hyperintense Lesion During the Hepatobiliary Phase of Gadoxetic Acid Enhanced-MRI: a Case Report 肝血管平滑肌脂肪瘤在肝胆道期表现为高强度病变:1例报告
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.1.60
B. Jeong, So Yeon Kim, H. Kang, J. Shin
{"title":"Hepatic Angiomyolipoma Presenting as a Hyperintense Lesion During the Hepatobiliary Phase of Gadoxetic Acid Enhanced-MRI: a Case Report","authors":"B. Jeong, So Yeon Kim, H. Kang, J. Shin","doi":"10.13104/imri.2022.26.1.60","DOIUrl":"https://doi.org/10.13104/imri.2022.26.1.60","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66637380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cerebral Amyloid Angiopathy Presenting as Cerebral Infarction in a Young Man: A Case Report 脑淀粉样血管病表现为脑梗死1例
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.3.171
Yun-Jeong Choi, J. Choi, Hyun Seok Choi, J. Byun, Eun Jeong Lee
{"title":"Cerebral Amyloid Angiopathy Presenting as Cerebral Infarction in a Young Man: A Case Report","authors":"Yun-Jeong Choi, J. Choi, Hyun Seok Choi, J. Byun, Eun Jeong Lee","doi":"10.13104/imri.2022.26.3.171","DOIUrl":"https://doi.org/10.13104/imri.2022.26.3.171","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66638154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MRI Features for Prediction Malignant Intra-Mammary Lymph Nodes: Correlations with Mammography and Ultrasound 预测恶性乳腺内淋巴结的MRI特征:与乳房x线摄影和超声的相关性
Investigative magnetic resonance imaging Pub Date : 2022-01-01 DOI: 10.13104/imri.2022.26.2.135
Meejung Kim, B. Kang, G. Park
{"title":"MRI Features for Prediction Malignant Intra-Mammary Lymph Nodes: Correlations with Mammography and Ultrasound","authors":"Meejung Kim, B. Kang, G. Park","doi":"10.13104/imri.2022.26.2.135","DOIUrl":"https://doi.org/10.13104/imri.2022.26.2.135","url":null,"abstract":"","PeriodicalId":73505,"journal":{"name":"Investigative magnetic resonance imaging","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66637801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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