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1.
S. Takahashi K. Ishii K. Matsumoto S. Higano T. Ishibashi M. Suzuki K. Sakamoto 《Neuroradiology》1994,36(5):337-339
We reviewed 12 cases of infarcts in the territory of the anterior choroidal artery (AChA) on CT and/or MRI. In each case vascular occlusion in the region was verified angiographically. Although the extent of the lesion on CT/MR images was variable, all were located on the axial images within an arcuate zone between the striatium anterolaterally and the thalamus posteromedially. The distribution of the lesions on mutiplanar MRI conformed well to the territory of the AChA demonstrated microangiographically. The variability of the extent of the infarcts may be explained by variations in the degree of occlusive changes in the AChA or the development of collateral circulation through anastomoses between the AChA and the posterior communicating and posterior cerebral arteries. The extent of the lesion appeared to be closely related to the degree of neurological deficit. 相似文献
2.
Chronological changes in nonhaemorrhagic brain Infarcts with short T1 in the cerebellum and basal ganglia 总被引:2,自引:0,他引:2
Our purpose was to investigate nonhaemorrhagic infarcts with a short T1 in the cerebellum and basal ganglia. We carried out
repeat MRI on 12 patients with infarcts in the cerebellum or basal ganglia with a short T1. Cerebellar cortical lesions showed
high signal on T1-weighted spin-echo images beginning at 2 weeks, which became prominent from 3 weeks to 2 months, and persisted
for as long as 14 months after the ictus. The basal ganglia lesions demonstrated slightly high signal from a week after the
ictus, which became more intense thereafter. Signal intensity began to fade gradually after 2 months. High signal could be
seen at the periphery until 5 months, and then disappeared, while low or isointense signal, seen in the central portion from
day 20, persisted thereafter.
Received: 1 February 1999 Accepted: 13 September 1999 相似文献
3.
Catarina Patrício Mariana Marques Silva Pedro Eduardo Silva João Oliveira Luís Bagulho 《Revista portuguesa de cardiologia》2018,37(5):447.e1-447.e6
A 49-year-old woman was hospitalized for acute left foot arterial ischemia. Arterial Doppler revealed occlusion of the dorsalis pedis and posterior tibial arteries. A computed tomography angiography performed to assess abdominal pain showed hepatic, splenic, renal and pancreatic infarctions. A splenic artery embolism and a small aortic wall thrombus at the celiac trunk were identified. No radiological signs of aortic atherosclerosis were found. No predisposing conditions for secondary aortic thrombosis or intracardiac embolic sources were detected. It was determined that primary aortic thrombosis, a rare though potentially serious condition, was to blame. Isolated aortic mural thrombosis therapy is not well established, although systemic anticoagulation, thrombolysis, thromboaspiration, endovascular stent grafting and surgical thrombectomy have been attempted with varying success. In our patient, systemic anticoagulation therapy was initiated and resulted in aortic thrombus resolution. Close clinical follow-up is crucial, as the aortic thrombus can recur despite anticoagulation and aggressive control of the atherosclerotic risk factors. 相似文献
4.
Hoogendam YY van der Geest JN van der Lijn F van der Lugt A Niessen WJ Krestin GP Hofman A Vernooij MW Breteler MM Ikram MA 《Neurobiology of aging》2012,33(12):2774-2781
In a population-based study of 3962 community-dwelling nondemented elderly we investigated the relation of age, sex, cardiovascular risk factors, and the presence of infarcts with cerebellar volume, and its interrelationship with cerebral volumes. Cerebellar and cerebral gray and white matter were segmented using Freesurfer version 4.5 (http://surfer.nmr.mgh.harvard.edu/). We used linear regression analyses to model the relationship between age, sex, cardiovascular risk factors, brain infarcts, white matter lesions (WMLs) and cerebellar and cerebral volume. Smaller cerebellar volumes with increasing age were mainly driven by loss of white matter. Diabetes, higher serum glucose and lower cholesterol levels were related to smaller cerebellar volume. No association was found between hypertension, smoking, apolipoprotein E (ApoE) genotype, and cerebellar volume. Supratentorial lacunar infarcts and WMLs were related to smaller cerebellar volume. Infratentorial infarcts were related to smaller cerebellar white matter volume and total cerebral volume. This study suggests that determinants of cerebellar volume do not entirely overlap with those established for cerebral volume. Furthermore, presence of infarcts or WMLs in the cerebrum can affect cerebellar volume. 相似文献
5.
93例经头颅MRI确诊为脑梗塞,腔隙性梗塞占74.19%,梗塞部位以基底节区、丘脑、桥脑、放射冠多见基底节区以豆状核多见左右侧发生梗塞的机会相似,但以双侧均梗塞的机会大,高血压高并糖尿病患者发生梗塞的病灶数明显多于无高血压病无糖尿病患者(P=0.01),提示前者可能更易发生多部位或多次梗塞。 相似文献
6.
CADASIL is an autosomally dominantly inherited multi-infarct dementia caused by mutations in the Notch3 gene in chromosome 19. In this report we present the first patient in the world literature with CADASIL and schizophrenia and discuss the co-occurrence of these conditions in the light of the literature. 相似文献
7.
《Clinical neurophysiology》2021,132(7):1462-1480
Transcranial magnetic stimulation (TMS) paired with nerve stimulation evokes short-latency afferent inhibition (SAI) and long-latency afferent inhibition (LAI), which are non-invasive assessments of the excitability of the sensorimotor system. SAI and LAI are abnormally reduced in various special populations in comparison to healthy controls. However, the relationship between afferent inhibition and human behavior remains unclear. The purpose of this review is to survey the current literature and synthesize observations and patterns that affect the interpretation of SAI and LAI in the context of human behavior. We discuss human behaviour across the motor and cognitive domains, and in special and control populations. Further, we discuss future considerations for research in this field and the potential for clinical applications. By understanding how human behavior is mediated by changes in SAI and LAI, this can allow us to better understand the neurophysiological underpinnings of human motor control. 相似文献
8.
M. Kitajima Y. Korogi T. Kido O. Ikeda S. Morishita M. Takahashi 《Neuroradiology》1998,40(11):710-715
We reviewed the MRI studies of 25 patients with occipital lobe infarcts to clarify the distribution of infarcts in the posterior
cerebral arterial territory, focussing on their relationship to the striate cortex. Visual field defects and MRI findings
were also correlated in 16 patients. On coronal and/or sagittal images, the distribution of the infarct and its relationship
to the striate cortex were classified. Involvement of the cortex of both upper and lower lips of the calcarine fissure was
observed in 10 patients, and involvement of the lower lip alone in 15. The upper cortical lesions were always accompanied
by lower cortical lesions. The visual field defects were complete hemianopia in nine patients, superior quadrantanopia in
six and hemianopia with a preserved temporal crescent in one. All patients with superior quadrantanopia had involvement of
the lower cortex alone; there were no cases of inferior quadrantanopia. The characteristic vascular anatomy, and poor development
of the collateral circulation in the lower cortical area, may explain the vulnerability of this area to infarcts.
Received: 12 January 1998 Accepted: 13 March 1998 相似文献
9.
Lidia Sarro Nirubol Tosakulwong Christopher G. Schwarz Jonathan Graff-Radford Scott A. Przybelski Timothy G. Lesnick Samantha M. Zuk Robert I. Reid Mekala R. Raman Bradley F. Boeve Tanis J. Ferman David S. Knopman Giancarlo Comi Massimo Filippi Melissa E. Murray Joseph E. Parisi Dennis W. Dickson Ronald C. Petersen Kejal Kantarci 《Alzheimer's & dementia》2017,13(3):257-266
Introduction
Cerebrovascular lesions on MRI are common in Alzheimer's disease (AD) dementia, but less is known about their frequency and impact on dementia with Lewy bodies (DLB).Methods
White-matter hyperintensities (WMHs) and infarcts on MRI were assessed in consecutive DLB (n = 81) and AD dementia (n = 240) patients and compared to age-matched and sex-matched cognitively normal subjects (CN) from a population-based cohort.Results
DLB had higher WMH volume compared to CN, and WMH volume was higher in the occipital and posterior periventricular regions in DLB compared to AD. Higher WMH volume was associated with history of cardiovascular disease and diabetes but not with clinical disease severity in DLB. Frequency of infarcts in DLB was not different from CN and AD dementia.Discussion
In DLB, WMH volume is higher than AD and CN and appears to be primarily associated with history of vascular disease. 相似文献10.
Value of MRI of the brain in patients with systemic lupus erythematosus and neurologic disturbance 总被引:4,自引:0,他引:4
Abstract Our objective was to review the frequency and pattern of signal abnormalities seen on conventional MRI in patients with suspected neuropsychiatric systemic lupus erythematosus (NP-SLE). We reviewed 116 MRI examinations of the brain performed on 85 patients with SLE, (81 women, four men, aged 21–78 years, mean 40.6 years) presenting with neurological disturbances. MRI was normal or nearly normal in 34%. In 60% high-signal lesions were observed on T2-weighted images, frequently in the frontal and parietal subcortical white matter. Infarct-like lesions involving gray and white matter were demonstrated in 21 of cases. Areas of restricted diffusion were seen in 12 of the 67 patients who underwent diffusion-weighted imaging. Other abnormalities included loss of brain volume, hemorrhage, meningeal enhancement, and bilateral high signal in occipital white-matter. The MRI findings alone did not allow us to distinguish between thromboembolic and inflammatory events in many patients. Some patients with normal MRI improved clinically while on immunosuppressive therapy. More sensitive and/or specific imaging methods, such as spectroscopy and perfusion-weighted imaging, should be investigated in these subgroups of patients with suspected NP-SLE. 相似文献