• Title/Summary/Keyword: cerebrovascular

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Effects of Salvianolic Acid B Against Oxidative Stress in Skeletal Muscle and Brain Tissue following Exhaustive Exercise in Rats (Salvianolic acid B가 고강도 운동부하에 의한 흰쥐 골격근과 뇌조직의 Oxidative Stress에 미치는 영향)

  • Lee, Hyun-Joon;Kang, Sung-Han;Kweon, Su-Hyeon;Kim, Dae-Kyung;Kim, Jeeho;Moon, Ji-Hong;Shin, Jung-Won;Lee, Jong-Soo;Sohn, Nak-Won
    • The Korea Journal of Herbology
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    • v.31 no.5
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    • pp.99-106
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    • 2016
  • Objectives : Salvianolic acid B (SAB) is an active ingredient in Salvia miltiorrhiza frequently used for cardiovascular and cerebrovascular diseases. The present study investigated the antioxidant effects of SAB on the skeletal muscle and the brain tissue of rats following exhaustive exercise.Methods : The rats were treated with oral administration of SAB (30 mg/kg) daily for 5 days prior to the exhaustive exercise. The exhaustive exercise was performed as swimming for 150 min with 5% body weight attached to the tail on the 5th day. The antioxidant effects of SAB was evaluated by measuring the superoxide generation in the gastrocnemius and the 4-HNE expression in the hippocampal tissue. In addition, c-Fos-expressing cells in the brain tissue was observed using immunohistochemistry.Results : Histological features and muscle fiber type composition were not different between the SAB group and the exhaustive exercise group. SAB significantly reduced the upregulation of superoxide generation in the muscle tissue. SAB significantly reduced the increase of c-Fos-expressing cells in the cerebral cortex, paraventricular thalamic nucleus, dorsomedial hypothalamic nucleus, the CA1, CA3, and DG regions of hippocampus. SAB significantly reduced the upregulation of 4-HNE expression in the CA1 and DG regions of hippocampus caused by the exhaustive exercise.Conclusions : The results suggest that SAB exerts antioxidative effect against oxidative stress in the skeletal muscle and the brain tissue following exhaustive exercise, while SAB may has an anti-stress effect on stress responses in the brain.

A Study on The Life Tablefor Specific Causes of Death in Korea (사망원인과 특정사인생명표에 관한 연구)

  • 한동준
    • Korea journal of population studies
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    • v.6 no.1
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    • pp.43-69
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    • 1983
  • This study was conducted to make the life tables from specific causes of death in Korea. Both "Life tables of Korea in l978-79" and "the statistics on causes of death statistics in 1980" issued by Economic Planning Board were used as source of data for this study. Among the 58, 187 death certificates reported to the concerned authorities, 39, 801 causes were drawn for the purpose of this study. As a result, it is revealed that two thirds of men in Korea died from these 10 major causes of death. The summarized results are as follows: 1. According to recent statistics, 10 major causes of death in 1980 were shown in the order of 1) malignant neoplasms, 2) cerebrovascular disease, 3) accidents and adverse effects, 4)hypertensive disease, 5) ischaemic heart disease and heart attack, 6) chronic liver disease and cirrhosis, 7) tuberculosis, 8) pneumonia, bronchitis, emphysema and asthma, 9) suicide, 10) diabetes mellitis. 2. The major causes of death in Korea were very similar to those of developed countries such as West Germany, Denmark and Japan. This means that our pattern of death causes is almost approaching to that of developed countries. 3. Our crude death rate in 1980 was on the line of 6.6 per 1, 000 people. This is very low level, compared with 12.1 in West Germany and 10.0 in Denmark, however, our age sepcific death rate was on the verge of doubled level in each age category as to that of West Germany, Denmark and Japan. The fact tells us that our death rate is very high yet, especially in young and prime adult age, and the proportion of the aged is quite low. 4. Average ages of people died from malignant neoplasms, cerebro vascular diseases and hypertensive diseases were 63.1, 66.6, 67.3 respectively, however, that of accidents and adverse effect was only 42.5. This shows that accidents occur indifferently from age. 5. In the curve of eventual death probability, the curve of malignant neoplasms was the highest of all curves before 60 in age. However, the probability curve of eventually dying from accidents and adverse effects tends to decline with age. 6. In this study five life tables from major causes of death (four leading causes of death and of tuberculosis) were constructed for 1979. These life tables are reflecting accurately the effects of age distribution on the specific cause of death. In the surviving curje of these tables we can see that the curve of accidents is adversely related to age. While curves of neoplasms, hypertension and tuberculosis are not diminishing before 40 in age, they are going sharply downward after 50 in age.ard after 50 in age.

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A Study on the Estimation of Limits to Life Expectancy (한국인 기대여명의 한계추정에 관한 연구)

  • 천성수;김정근
    • Korea journal of population studies
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    • v.16 no.2
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    • pp.65-83
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    • 1993
  • The purpose of this study is estimate limits of Korean life expectancy at birth by 'Gompertz growth curse Model', 'Cause-Elimination Model' and Multidimensional models of Senescencee and Mortality'. Data used in Gompertz curve were obtained from all life tables published from 1905 to 1990 in Korea, and life expectancies at birth of eighteen groups were selected at five-year interval in consideration of time-series changes. Data used in Cause-Elimination Model are 'Cause of Death statistics in 1991' published in 1992 by National Bureau of Statistics of Korea and 'life table of 1989' published in 1990 by National Bureau of Statistics, Economic Planning Board of Korea. The materials are all classifiable death data, 119, 253 cases of male and 82, 420 cases of female, which is from 1991 Causes of Death statistics. The cases of death analyzed belong to one of 8 categories; i.e., Infectious and Parasitic Diseases(001-139; with notation of Infectious Diseases), Malignant Neoplasms(140-208), Hypertensive Diseases(401-405), Ischemic Heart Dieases and Diseases of Pulmonary Circulation and Other Forms of Heart Diseases(410-429;with notation of Heart Disease), Cerebrovascular Diseases(430-438), Chronic Liver Diseases and Cirrhosis(571; with notation of Liver Diseases), Injury and Poisoning(800-999) and all other disease. Data used in 'Multidimensional models of senescence and mortality' were life table of 1989 published by National Bureau of statistics, Economic Planning Board of Korea and life table of 1970, 1978-79, 1983, 1985 and 1987. The major findings may be summarised as follows: 1. Estimate equations of Gompertz growth curve using life expectancy at birth during the 1905-1990 period are as the following. Male : y = 88.047697 $\times$ $0.199690^{0.903381x}$ Female : y = 95.632828 $\times$ $0.199690^{0.903381x}$ Limits of life expectancy at birth, which were estimated by Gompertz growth curve, are 88.05 for male and 95.63 for female. 2. The effect on life expectancy at birth eliminationg all causes death is 14.04 years(for male) and 10.86 years(for female). Astonishingly, eliminating the malignant neoplasms increase life expectancy at birth by 2.85 years for male 2.03 years for female in 1991. In table 8 we show the effect on life expectancy at birth of separately eliminating each of the 8 categorical causes of death. The theoretical limit to life expectancy by Cause-Elimination Model is 80.96 for male and 85.82 for female. 3. If the same rate of delay [0.376 year(male), 0.435 year(femable) per calendar year] continued, then life expectancy at birth would reach 74.82(male) years and 84, 10(female) years in 2010. With 14.04-years(male) and 10.86-years(female) effect attributable in 2010 would be 88.86 years(male) and 94.96(femable) years. 4. 'Multidimensional models of senescence and death' permits calculations of the value of the attribution coefficient (B), percent of loss per year of physiologic function. The results of Ro and B during the 1970-1989 period are listed in table 9. Estimate of limit to Korean life expectancy at birth by 'Multidimensional models of senescence and death' is 99.47 years for male and 104.74 years for female in 1989.

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Effects of Folium Artemisiae Argyi' Herbal Acupuncture of $LR_3$ on Transient Forebrain Ischemic Injury in Rats (태충(太衝) 애엽(艾葉) 약침(藥鍼)이 일과성(一過性) 전뇌(前腦) 허혈(虛血) 손상(損傷)에 미치는 효과(效果))

  • Jang, Jin-Yo;Kim, Jae-Hyo;Park, Sung-Seup;Park, Gyi-Jong;Kim, Kyung-Sik;Sohn, In-Chul
    • Korean Journal of Acupuncture
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    • v.22 no.3
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    • pp.63-81
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    • 2005
  • Herbal acupuncture has been used to prevent and treat the cerebrovascular accident, such as a stroke, and many studies of acupuncture and moxibustion concerning to the stroke have been undertaken in the human and various animals. The main characteristics of herbal acupuncture are a combination of acupuncture and herbal medicine. It was not well known the therapeutic effect and the mechanism of herbal acupuncture on transient forebrain ischemic injury, although it has been used frequently in clinics. In this study, neuroprotective effects of folium artemisiae argyi (艾葉)' herbal acupuncture on the $LR_3$ (Taechung) on the transient forebrain ischemia were investigated in Sprague-Dawely rats. Expressions of cFos, FosB and BDNF protein in the hippocampus and cortex were observed at 2 hrs and 48 hrs after transient forebrain ischemia by immunohistochemistry and ELISA technique. Expression of cFos protein was increased slightly in the hippocampus and cortex at 2 hrs after transient forebrain ischemia, but FosB protein was increased highly comparing to cFos protein. However, pretreatment with folium artemisiae argyi' herbal acupuncture on $LR_3$ significantly increased expression of cFos protein and significantly decreased expression of FosB protein compared to control group. These features were observed in the motor cortex and retrosplenial granular cortex as well as the hippocampus. Also, pretreatment with folium artemisiae argyi' herbal acupuncture on $LR_3$ significantly increased the expression of BDNF protein in the hippocampus ($263.26{\pm}44.56pg/ml$ extracted by water, $275.35{\pm}51.47pg/ml$ extracted by moxa tar)and the cortex ($102.33{\pm}13.65pg/ml$ extracted by water, $109.54{\pm}9.37pg/ml$ extracted by moxa tar) compared to the hippocampus $(134.07{\pm}2.96pg/ml)$ and the cortex $(61.16{\pm}4.11pg/ml)$ in control group at 48 hrs after transient forebrain ischemia. These results suggest that pretreatment with folium artemisiae argyi'herbal acupuncture on $LR_3$ has neuroprotective effect on transient forebrain ischemia and the herbal acupunture on $LR_3$ may be related to antioxidative function of folium artemisiae argyi.

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An Analysis of Fall Incidence Rate and Its Related Factors of Fall in Inpatients (입원환자 낙상 발생 실태와 원인에 관한 분석 연구)

  • Kim, Chul-Gyu;Suh, Moon-Ja
    • Quality Improvement in Health Care
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    • v.9 no.2
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    • pp.210-228
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    • 2002
  • Background: The purpose of this research was to examine the fall incidence rate and its related factors of fall in inpatients. Methods: The data were collected from the 138 fall incident reports in one tertiary hospital in Seoul from April 1st 1999 to September 30th 2001. The Fall Incident Report Form was originally developed based on that of Massachusetts General Hospital revised in 1995. And this was modified for this survey by the collaborating work of QI team including researcher and department of nursing service of this particular hospital. The contents of Fall Incident Form were general characteristics of patient. factors related to fall. types and places of fall. circumstances, nursing interventions. and outcome. Results: 1) The incidence rate of fall was 0.08% of total discharged patients and 0.081 per 1000 patient-day. This incidence rate is much lower than that of several hospitals in USA. This finding might result from the different incidence report system of each hospital. 2) The characteristics of fall-prone patient were found as follows. They were mostly over 60 years old, in alert mental status, ambulatory with some assistance, and dependent on ambulatory device. The types of diseases related high incidence rate were cerebrovascular disease(3.2), hypertension(1.6), cardiovascular disease(1.4), diabetes(1.3) and liver disease(0.6). 3) The majority of fall events usually occurred m bed. bedside(walking or standing) and bathroom in patient room. Usually they were up on their own when they fell. And there were more falls of elderly occurred during night time than day or evening. 4) 63.8% of fall events resulted in physical injuries such as fracture and usually the patients had diagnostic procedures and some treatment(ex. suture) which caused additional cost to the patients and their families. 5) The found risk factors of fall were drugs(antihypertensive drug, diuretics) and environmental factors like too high bed height, long distance of bedside table and lamp switch, and slippery tile of bathroom floor. Conclusion: Considering these results, every medical and nursing staff should be aware of the risk factors of patients in hospital, and should intervene more actively the preventive managements, specially for the elderly patients during night. Therefore, it is recommended that the development of Fall Prevention Programs based on these results.

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Using the X-ray Image, Augmented Reality based electrocardiogram measurement system Development (X-ray 이미지를 활용한 증강현실 기반 심전도 측정시스템 개발)

  • Lee, Kwang-In;Jang, Jin-Soo;Lee, Tae-Ro
    • Journal of Digital Convergence
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    • v.14 no.9
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    • pp.331-339
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    • 2016
  • Chronic diseases are increasing nowadays as daily habits changed due to economic growth. Among chronic diseases, heart cerebrovascular disease is one of the major causes of death in South Korea that accounts for approximately 20% of mortality. Tests to measure anomaly of the heart is ECG tests, which measures and analyzes the electrical heart activity. Any mistakes in lead attachment location critically affects ECG testings, and statistical facts showed that only 2.8% of the nurses properly located leads to patients. As a solution, this paper proposes a system based on a projection-based augmented reality technology to generate X-ray images to the patient's chest to point out exact attachment locations of ECG leads. Evaluation comparison results showed a 2.6 cm difference between the conventional system and the proposed system. ECG test results also showed significant signal differences between the systems in leads V1, V2, and V3. The ECG measured accurately by the proposed system would help greatly in patient management and clinical decisions of clinicians.

The Study on the Effectiveness of Acupuncture in Stroke Rehabilitation (중풍(中風) 재활(再活)의 침치료(鍼治療) 효과(效果)에 대한 고찰(考察) -최근 RCT(Randomized controlled trial) 논문을 중심으로-)

  • Kim, Eun-jung;Lee, Jae-dong;Kang, Sung-keel
    • Journal of Acupuncture Research
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    • v.22 no.1
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    • pp.211-221
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    • 2005
  • Objective : The aim of this study is to review clinical trials on the effectiveness of acupuncture in stroke rehabilitation. Methods : Computerized literature searches was carried out on three electronic databases, and hand-searching on some chinese medical journals in library of Kyung Hee Medical Center. Results : 1) Sixteen articles of clinical trials were collected and reviewed. Among these articles, randomized controlled trials were achieved in nine articles. 2) In three articles, statically significant results in improvement of mobile abilities, activities of daily life and Quality of life were reported after acupuncture treatment applied as a part of stroke rehabilitation. In three articles no statically significant changes were reported. 3) Among two articles about spasticity, One about the upper limbs and the results showed statically significant improvement of the spasticity after acupuncture treatment as stroke rehabilitation, and the other was about the lower limbs and the results showed no statically significant changes. 4) One article about acupuncture and postural control showed statically significant results suggesting that acupuncture promotes normalization of postural control after stroke.

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The Effects of Ohyaksungi-san(Wuyaoshunqi-san) on Cognition and Motor Function Recovery after Ischemic Brain Injury in Rat (오약순기산(烏藥順氣散)이 허혈성 뇌손상 흰쥐의 인지 및 운동기능회복에 미치는 효과)

  • Ryu, Ki-Jun;Choi, Jin-Bong;Shin, Mi-Suk;Kim, Sun-Jong
    • Journal of Korean Medicine Rehabilitation
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    • v.18 no.3
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    • pp.1-17
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    • 2008
  • Objectives : Ohyaksungi-san(Wuyaoshunqi-san) has been used for many years as a treatment for cerebrovascular diseases in Oriental medicine. This study was designed to evaluate the effects of Ohyaksungi-san(Wuyaoshunqi-san) on cognition and motor function recovery after ischemic brain injury, and also the expression of BDNF in hippocampus. Methods : This study was designed with 4 subgroups to evaluate the effects of Ohyaksungi-san(Wuyaoshunqi-san). As control groups, group I has no treatment during 1 week after ischemic brain injury and group II has no treatment during 2 weeks after ischemic brain injury. As experimental groups, group III has been treated with Ohyaksungi-san(Wuyaoshunqi-san) during 1 week after ischemic brain injury and group IV have treated with Ohyaksungi-san(Wuyaoshunqi-san) during 2 week after ischemic brain injury. Each group has been examined by tests as follows, neurological motor behavioral tests, cognitive motor behavior test and histological test. Neurological motor behavior tests consisted of limb placement test, beam-walking test and horizontal wire test. Cognitive motor behavior test was performed by using Morris water maze. In the histological test, TTC(2,3,5-triphenylteterazolium chloride) staining, hematoxylin & eosin staining, and immunohistochemical staining were used. Results : 1. The tests for motor function recovery change had significantly good result in the experimental groups as compared with control groups(p<.05). 2. The Morris water maze test on cognition also had significantly good result in the experimental groups as compared with control groups(p<.05). 3. In the immunohistochemical staining for the expression of BDNF in hippocampus, more immune reaction was investigated in the experimental groups as compared with control groups. Especially group IV has the greatest immune reaction. Conclusions : Ohyaksungi-san(Wuyaoshunqi-san) has good effects on cognition and motor function recovery after ischemic brain injury, and also the expression of BDNF in hippocampus.

The Correlation between Perceived Social Support and Hope of Stroke Survivors (뇌졸중 환자가 지각하는 사회적 지지와 희망과의 관계)

  • Kim, Kyung-Ok;Cho, Bok-Hee
    • The Korean Journal of Rehabilitation Nursing
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    • v.4 no.1
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    • pp.58-72
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    • 2001
  • A Cerebrovascular accident(CVA), or Stroke is a medical emergency that occurred when the blood supply to the brain is interrupted or blocked. The stroke causes physical function disorder due to hemiparalysis and emotional disorder. Also the stroke patients experience helplessness, powerlessness, sense of alienation and loss of hope. These feelings make the rehabilitation difficult because they lose the will of life. The purpose of this study is to identify the correlation between perceived social support and hope of stroke survivors. The subjects for this study were 100 out-patients with stroke in one general hospital and oriental medicine hospital located in Mokpo. The data were analysed by frequency, t-test, ANOVA. Duncan test, Pearson's correlation, using the SPSS WIN 9.0 program. Data were collected from July 11 to September 9, 2000, using a structured questionnaire. The instruments used for this study : The social support scale developed by Park, Ji-won(1985) and the hope scale developed by Miller(1988). The results were as follows. 1. It was found that the higher the degree of perceived social support, the higher the degree of hope(r=.726, p=.000). Therefore hypothesis was supported. 2. The mean score of perceived social support was 77.8(SD=21.0) with a score range from 27.0 to 104.0. 3. The mean score of perceived hope was 117.0(SD=25.7) with a score range from 57.0 to 160.0. 4. The level of social support depending on general characteristics were significantly different in variables such as marital status(t=3.131, p=.010). degree of income satisfaction(F=16.027, p=.000). 5. The level of hope depending on general characteristics were significantly different in variables such as marital status(t=2.681, p=.040). current job(t=-2.055, p=.043) degree of income, satisfaction(F=11.363, p=.000). For these subjects, there was a significant relationship between social support and hope. The stroke survivors need social support to inspire their hope. Nurses should plan interventions to enhance social support for patients with stroke. The above results may be used as the basic data to seek more efficient way of elevating nursing practice and rehabilitation for the patients with stroke.

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Susceptibility Vessel Sign for the Detection of Hyperacute MCA Occlusion: Evaluation with Susceptibility-weighted MR Imaging

  • Lee, Sangmin;Cho, Soo Bueum;Choi, Dae Seob;Park, Sung Eun;Shin, Hwa Seon;Baek, Hye Jin;Choi, Ho Cheol;Kim, Ji-Eun;Choi, Hye Young;Park, Mi Jung
    • Investigative Magnetic Resonance Imaging
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    • v.20 no.2
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    • pp.105-113
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    • 2016
  • Purpose: Susceptibility vessel sign (SVS) on gradient echo image, which is caused by MR signal loss due to arterial thrombosis, has been reported in acute middle cerebral artery (MCA) infarction. However, the reported sensitivity and diagnostic accuracy of SVS have been variable. Susceptibility-weighted imaging (SWI) is a newly developed MR sequence. Recent studies have found that SWI may be useful in the field of cerebrovascular diseases, especially for detecting the presence of prominent veins, microbleeds and the SVS. The purpose of this study was to evaluate the diagnostic values of SWI for the detection of hyperacute MCA occlusion. Materials and Methods: Sixty-nine patients (37 males, 32 females; 46-89 years old [mean, 69.1]) with acute stroke involving the MCA territory underwent MR imaging within 6 hours after the symptom onset. MR examination included T2, FLAIR (fluid-attenuated inversion recovery), DWI, SWI, PWI (perfusion-weighted imaging), contrast-enhanced MR angiography (MRA) and contrast-enhanced T1. Of these patients, 28 patients also underwent digital subtraction angiography (DSA) within 2 hours after MR examination. Presence or absence of SVS on SWI was assessed without knowledge of clinical, DSA and other MR imaging findings. Results: On MRA or DSA, 34 patients (49.3%) showed MCA occlusion. Of these patients, SVS was detected in 30 (88.2%) on SWI. The sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of SWI were 88.2%, 97.1%, 96.8%, 89.5% and 92.8%, respectively. Conclusion: SWI was sensitive, specific and accurate for the detection of hyperacute MCA occlusion.