A. Förster , Ana Ramos , H. Wenz , C. Groden , A. Alonso
{"title":"伴有或不伴有缺血性梗死的一过性神经血管症状患者的计算机弥散加权成像","authors":"A. Förster , Ana Ramos , H. Wenz , C. Groden , A. Alonso","doi":"10.1016/j.neurad.2023.02.007","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose</h3><p><span>Detection of ischemic lesions in patients with transient neurovascular symptoms is relevant for the estimation of the risk of a subsequent stroke and etiological classification. To improve detection rates, different technical approaches have been used, such as diffusion-weighted imaging (DWI) with high b-values or higher magnetic field strength. Here, we sought to investigate the value of computed </span>DWI (cDWI) with high b-values in these patients.</p></div><div><h3>Methods</h3><p>From an MRI report database we identified patients with transient neurovascular symptoms who underwent repeated MRI including DWI. cDWI was calculated with a monoexponential model with high b-values (2000, 3000, and 4000 s/mm<sup>2</sup>) and compared to the routinely used standard DWI with regard to presence of ischemic lesions and lesion detectability.</p></div><div><h3>Result</h3><p>Overall 33 patients with transient neurovascular symptoms (71 [IQR 57–83.5] years; 21 [63.6%] male) were included. On DWI, acute ischemic lesions were observed in 22 (78.6%). Acute ischemic lesions were observed in 17 (51.5%) patients on initial DWI, and in 26 (78.8%) patients on follow-up DWI. Lesion detectability was rated significantly better on cDWI at 2000s/mm<sup>2</sup> compared to standard DWI. In 2 (9.1%) patients, cDWI at 2000s/mm<sup>2</sup> revealed an acute ischemic lesion proven on follow-up standard DWI which was not detected with certainty on the initial standard DWI.</p></div><div><h3>Conclusion</h3><p>cDWI might be a valuable addition to routinely acquired standard DWI in patients with transient neurovascular symptoms since its use might result in improved ischemic lesion detection. A b-value of 2000s/mm<sup>2</sup> seems most promising for clinical practice.</p></div>","PeriodicalId":50115,"journal":{"name":"Journal of Neuroradiology","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Computed diffusion-weighted imaging in patients with transient neurovascular symptoms with and without ischemic infarction\",\"authors\":\"A. Förster , Ana Ramos , H. Wenz , C. Groden , A. Alonso\",\"doi\":\"10.1016/j.neurad.2023.02.007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Purpose</h3><p><span>Detection of ischemic lesions in patients with transient neurovascular symptoms is relevant for the estimation of the risk of a subsequent stroke and etiological classification. To improve detection rates, different technical approaches have been used, such as diffusion-weighted imaging (DWI) with high b-values or higher magnetic field strength. Here, we sought to investigate the value of computed </span>DWI (cDWI) with high b-values in these patients.</p></div><div><h3>Methods</h3><p>From an MRI report database we identified patients with transient neurovascular symptoms who underwent repeated MRI including DWI. cDWI was calculated with a monoexponential model with high b-values (2000, 3000, and 4000 s/mm<sup>2</sup>) and compared to the routinely used standard DWI with regard to presence of ischemic lesions and lesion detectability.</p></div><div><h3>Result</h3><p>Overall 33 patients with transient neurovascular symptoms (71 [IQR 57–83.5] years; 21 [63.6%] male) were included. On DWI, acute ischemic lesions were observed in 22 (78.6%). Acute ischemic lesions were observed in 17 (51.5%) patients on initial DWI, and in 26 (78.8%) patients on follow-up DWI. Lesion detectability was rated significantly better on cDWI at 2000s/mm<sup>2</sup> compared to standard DWI. In 2 (9.1%) patients, cDWI at 2000s/mm<sup>2</sup> revealed an acute ischemic lesion proven on follow-up standard DWI which was not detected with certainty on the initial standard DWI.</p></div><div><h3>Conclusion</h3><p>cDWI might be a valuable addition to routinely acquired standard DWI in patients with transient neurovascular symptoms since its use might result in improved ischemic lesion detection. A b-value of 2000s/mm<sup>2</sup> seems most promising for clinical practice.</p></div>\",\"PeriodicalId\":50115,\"journal\":{\"name\":\"Journal of Neuroradiology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2024-02-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Neuroradiology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0150986123001864\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CLINICAL NEUROLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Neuroradiology","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0150986123001864","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CLINICAL NEUROLOGY","Score":null,"Total":0}
Computed diffusion-weighted imaging in patients with transient neurovascular symptoms with and without ischemic infarction
Purpose
Detection of ischemic lesions in patients with transient neurovascular symptoms is relevant for the estimation of the risk of a subsequent stroke and etiological classification. To improve detection rates, different technical approaches have been used, such as diffusion-weighted imaging (DWI) with high b-values or higher magnetic field strength. Here, we sought to investigate the value of computed DWI (cDWI) with high b-values in these patients.
Methods
From an MRI report database we identified patients with transient neurovascular symptoms who underwent repeated MRI including DWI. cDWI was calculated with a monoexponential model with high b-values (2000, 3000, and 4000 s/mm2) and compared to the routinely used standard DWI with regard to presence of ischemic lesions and lesion detectability.
Result
Overall 33 patients with transient neurovascular symptoms (71 [IQR 57–83.5] years; 21 [63.6%] male) were included. On DWI, acute ischemic lesions were observed in 22 (78.6%). Acute ischemic lesions were observed in 17 (51.5%) patients on initial DWI, and in 26 (78.8%) patients on follow-up DWI. Lesion detectability was rated significantly better on cDWI at 2000s/mm2 compared to standard DWI. In 2 (9.1%) patients, cDWI at 2000s/mm2 revealed an acute ischemic lesion proven on follow-up standard DWI which was not detected with certainty on the initial standard DWI.
Conclusion
cDWI might be a valuable addition to routinely acquired standard DWI in patients with transient neurovascular symptoms since its use might result in improved ischemic lesion detection. A b-value of 2000s/mm2 seems most promising for clinical practice.
期刊介绍:
The Journal of Neuroradiology is a peer-reviewed journal, publishing worldwide clinical and basic research in the field of diagnostic and Interventional neuroradiology, translational and molecular neuroimaging, and artificial intelligence in neuroradiology.
The Journal of Neuroradiology considers for publication articles, reviews, technical notes and letters to the editors (correspondence section), provided that the methodology and scientific content are of high quality, and that the results will have substantial clinical impact and/or physiological importance.