Perfusion-weighted MRI parameters for prediction of early progressive infarction in middle cerebral artery occlusion

Kim, Hoon; Jo, Kwang Wook; Kim, Seong Rim; Prak, Ik Seong; Kim, Young Woo

doi:10.1016/j.jstrokecerebrovasdis.2016.11.103

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…And several studies used multiple images for evaluating ischemic penumbra but not the one that is superior to others 12) . Kim et al 9) investigated perfusion MRI can be a parameter for early progression of acute infarction. DE-FUSE 3 trial used automated software (RAPID; RapidAI, Menlo Park, CA, USA) for defining diffusion-perfusion mismatching 1) .…”

Section: Discussionmentioning

confidence: 99%

Early Restoration of Hypoperfusion Confirmed by Perfusion Magnetic Resonance Image after Emergency Superficial Temporal Artery to Middle Cerebral Artery Anastomosis

Eun

Park

2022

J Korean Neurosurg Soc

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Objective : Emergency superficial temporal artery to middle cerebral artery (STA-MCA) anastomosis in patients with large vessel occlusion who fails mechanical thrombectomy or does not become an indication due to over the time window can be done as an alternative for blood flow restoration. The authors planned this study to quantitatively measure the degree of improvement in cerebral perfusion flow using perfusion magnetic resonance imaging (MRI) after bypass surgery and to find out what factors are related to the outcome of the bypass surgery. Methods : For a total of 107 patients who underwent emergent STA-MCA bypass surgery with large vessel occlusion, the National Institute of Health stroke scale (NIHSS), modified Rankin score (mRS), infarction volume, and hypoperfusion area volume was calculated, the duration between symptom onset and reperfusion time, occlusion site and infarction type were analyzed. After emergency STA-MCA bypass, hypoperfusion area volume at post-operative 7 days was calculated and analyzed compared with pre-operative hypoperfusion area volume. The factors affecting the improvement of mRS were analyzed. The clinical status of patients who underwent emergency bypass was investigated by mRS and NIHSS before and after surgery, and changes in infarct volume, extent, degree of collateral circulation, and hypoperfusion area volume were measured using MRI and digital subtraction angiography (DSA). Results : The preoperative infarction volume was median 10 mL and the hypoperfusion area volume was median 101 mL. NIHSS was a median of 8 points, and the last normal to operation time was a median of 60.7 hours. STA patency was fair in 97.1% of patients at 6 months follow-up DSA and recanalization of the occluded vessel was confirmed at 26.5% of patients. Infarction volume significantly influenced the improvement of mRS (p=0.010) but preoperative hypoperfusion volume was not significantly influenced (p=0.192), and the infarction type showed marginal significance (p=0.0508). Preoperative NIHSS, initial mRS, occlusion vessel type, and last normal to operation time did not influence the improvement of mRS (p=0.272, 0.941, 0.354, and 0.391). Conclusion :In a patient who had an acute cerebral infarction due to large vessel occlusion with large ischemic penumbra but was unable to perform mechanical thrombectomy, STA-MCA bypass could be performed. By using time-to-peak images of perfusion MRI, it is possible to quickly and easily confirm that the brain tissue at risk is preserved and that the ischemic penumbra is recovered to a normal blood flow state.

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Section: Discussionmentioning

confidence: 99%

Early Restoration of Hypoperfusion Confirmed by Perfusion Magnetic Resonance Image after Emergency Superficial Temporal Artery to Middle Cerebral Artery Anastomosis

Eun

Park

2022

J Korean Neurosurg Soc

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“…No matter which side, there are significant intellectual and memory impairments, mainly expressing language and words, abstract thinking, computing operations, visual memory retention, recent events memory, etc., frontotemporal lobe damage and abnormal behavior, apathy, and depression. alamic and/or basal ganglia area damage may also include thalamus aphasia and lateral neglect, as shown in Figure 5, which is an MRI image of cerebral infarction [6].…”

Section: Discussionmentioning

confidence: 99%

Optimized CSMRI Algorithm-Based MRI Image Analysis in the Active Rehabilitation Method for Patients with Acute Cerebral Infarction

Zeng

Chen

Liu

et al. 2021

Scientific Programming

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This paper combines optimized CSMRI algorithm (CS) and magnetic resonance imaging (MRI) to shorten the scanning time of MRI image data and improve the imaging quality. At the same time, the paper applies functional magnetic resonance imaging (BOLD-fMRI) based on the principle of blood oxygen level dependence to explore the application value of the nerve function reconstruction therapy system for the rehabilitation of active and passive motor functions in patients with acute cerebral infarction. Methods. In this paper, 20 patients with acute cerebral infarction were included. The random drawing method was used to divide them into active group and passive group, each with 10 cases. Both groups were treated with conventional medication and acupuncture. The active group used the active mode of the nerve function reconstruction treatment system to guide the patients’ limb active exercise; all training in the passive group is provided by the nerve function reconstruction treatment system to passively exercise the patients’ limbs; both groups undergo BOLD-fMRI examination before treatment and after 2 weeks of treatment and observe the activated parts of the brain functional area and corresponding parts of the two groups before and after treatment. We observe the activation volume and, at the same time, the ADL score. Results. After treatment, the activation volume and ADL scores of brain functional areas in the two groups were significantly improved compared with those before treatment, and the difference was statistically significant ( P < 0.05 ). Conclusion. The combination of optimized CSMRI algorithm (CS) and magnetic resonance imaging (MRI) can be used to evaluate the early rehabilitation efficacy of patients with acute cerebral infarction and has certain guiding value for clinical treatment.

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“…For cerebral perfusion volume, the amount of blood passing through 100 g brain tissue is measured (Cerebral blood volume). For cerebral perfusion flow, the amount of blood passing through 100 g brain tissue within a given period of time (1 minute) is measured (Cerebral blood flow) (5,9).…”

Section: A B C a B C █ Discussionmentioning

confidence: 99%

Evaluation of cortical brain parenchyma, by diffusion and perfusion mri, before and after chronic subdural hematoma surgery

Akgun

Çakın²,

Öztürk³

et al. 2017

Turkish Neurosurgery

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ABSTRACTresponsible for the development of SDHs (2,7). The causative factors for SDHs include previous trauma, coagulopathies, intracranial hypotension, chronic alcoholism, vascular malformations, and intracranial masses (1). According to the time of development, SDHs that develop within the first 3 days are classified as acute SDHs, those that develop within 4-20 days are classified as sub-acute SDHs, and those that develop after 21 days are classified as chronic SDHs (CSDHs) (14). CSDHs reflect the organization of the █ INTRODUCTION I ntracranial subdural hematomas (SDHs) are hemorrhages that develop between the dura mater and the arachnoid mater and are likely to be associated with high mortality and morbidity. They are divided into three types as acute, sub-acute, and chronic, according to the time of development (7). Rupture of the parasagittal bridging veins, which course along the subdural distance, is classically shown as the factor AIM: To evaluate microcirculatory changes in neighboring parenchyma as a result of pressure due to chronic subdural hematoma (CSDH) in early and late periods after hematoma drainage. MATERIAL and METHODS:The subject group consisted of 25 patients who underwent CSDH drainage. Brain diffusion and perfusion magnetic resonance images (MRIs) were obtained preoperatively, and at 48 hours (early period) and 2 months (late period) postoperatively. Measurements were performed on 1 cm 2 regions of interest (ROI) in the neighboring parenchymal tissue. RESULTS: CONCLUSION:The fact that there was an increase in diffusion values from early to late postoperative periods, compared with the preoperative period, indicates that the beneficial effects of surgery increase over time. Brain perfusion was found to be slightly decreased in early postoperative period. Following CSDH drainage, neurological deteriorations are observed in some patients in the early postoperative periods; a slight impairment in perfusion may account for this. However, during the late postoperative period, perfusion was seen to recover prominently.

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Perfusion-weighted MRI parameters for prediction of early progressive infarction in middle cerebral artery occlusion

Cited by 3 publications

References 13 publications

Early Restoration of Hypoperfusion Confirmed by Perfusion Magnetic Resonance Image after Emergency Superficial Temporal Artery to Middle Cerebral Artery Anastomosis

Early Restoration of Hypoperfusion Confirmed by Perfusion Magnetic Resonance Image after Emergency Superficial Temporal Artery to Middle Cerebral Artery Anastomosis

Optimized CSMRI Algorithm-Based MRI Image Analysis in the Active Rehabilitation Method for Patients with Acute Cerebral Infarction

Evaluation of cortical brain parenchyma, by diffusion and perfusion mri, before and after chronic subdural hematoma surgery

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