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Source: Journal of Stroke and Cerebrovascular Diseases
Procedure: CT Scan
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Total 317 results found since Jan 2013.
Arterial Spin Labeling Perfusion Magnetic Resonance Image with Dual Postlabeling Delay: A Correlative Study with Acetazolamide Loading I-Iodoamphetamine Single-Photon Emission Computed Tomography
Perfusion magnetic resonance image with arterial spin labeling (ASL) provides a completely noninvasive measurement of cerebral blood flow (CBF). However, arterial transient times can have a marked effect on the ASL signal. For example, a single postlabeling delay (PLD) of 1.5 seconds underestimates the slowly streaming collateral pathways that maintain the cerebrovascular reserve (CVR). To overcome this limitation, we developed a dual PLD method.
Source: Journal of Stroke and Cerebrovascular Diseases - September 16, 2015 Category: Neurology Authors: Sei Haga, Takato Morioka, Takafumi Shimogawa, Tomoaki Akiyama, Kei Murao, Yuka Kanazawa, Tetsuro Sayama, Shuji Arakawa Source Type: research
A Case of Unexpected Symptomatic Vasospasm after Clipping Surgery for an Unruptured Intracranial Aneurysm
We report a case of a 62-year-old woman who presented with symptomatic vasospasm 11 days after clipping surgery for an unruptured aneurysm. We could not predict the existence of vasospasm until ischemic symptoms developed. We retrospectively found mild vasospasm in the computed tomography angiogram taken 8 days after the operation. The patient complained of a prolonged unexpected headache 1 week after the operation.
Source: Journal of Stroke and Cerebrovascular Diseases - December 24, 2015 Category: Neurology Authors: Hiroaki Hashimoto, Masahiro Kameda, Takao Yasuhara, Isao Date Tags: Case Studies Source Type: research
Time-Resolved 4-Dimensional Computed-Tomography Angiography Can Correctly Identify Carotid Pseudo-Occlusion
We present an 82-year-old man with a symptomatic critical internal carotid artery, which was detected on time-resolved 4-dimensional computed-tomography angiography, whereas single-phase computed-tomography angiography, magnetic resonance angiography, and Doppler ultrasonography suggested apparent occlusion.
Source: Journal of Stroke and Cerebrovascular Diseases - February 20, 2016 Category: Neurology Authors: Felix C. Ng, Mineesh Datta, Philip M.C. Choi Tags: Case Studies Source Type: research
Risk Factors for Lacunar Strokes with Visible Cerebral Lesions on Computed Tomography Scan
The aim of this study was the detection of risk factors for lacunar strokes with visible lesions on computed tomography (CT) scan, considering in particular clinical characteristics, echocardiographic parameters, and carotid–femoral pulse wave velocity (PWV, a marker of large-artery stiffness). Lacunar strokes with very small or nonvisible lesions may have different risk factors.
Source: Journal of Stroke and Cerebrovascular Diseases - March 19, 2016 Category: Neurology Authors: Antonio Muscari, Camilla Conte, Daniela Degli Esposti, Luca Faccioli, Roberta Falcone, Besar Kolce, Lisa Marabini, Giovanni M. Puddu, Martina Rosticci, Luca Spinardi, Maddalena Veronesi, Claudio Borghi, Marco Zoli Source Type: research
Concurrence of Aneurysmal Subarachnoid Hemorrhage and Stanford Type A Acute Aortic Dissection
We report a rare case of concurrent aneurysmal subarachnoid hemorrhage (SAH) and acute aortic dissection (AAD). A 38-year-old man visited our hospital complaining of severe headache, and brain computed tomography (CT) revealed the presence of SAH. Thoracic to neck computed tomography angiography (CTA), performed in addition to brain CTA, suggested a tear in the aortic arch, and subsequent CT aortography established the diagnosis of Stanford type A AAD. The AAD in our patient, who reported no episodes of chest or back pain, was detected incidentally by thoracic to neck CTA.
Source: Journal of Stroke and Cerebrovascular Diseases - April 11, 2016 Category: Neurology Authors: Joji Inamasu, Takeya Suzuki, Akira Wakako, Akiyo Sadato, Yuichi Hirose Tags: Case Studies Source Type: research
Subarachnoid Hemorrhage due to Spinal Cord Schwannoma Presenting Findings Mimicking Meningitis
We report an unusual case of spinal SAH mimicking meningitis with normal brain computed tomography (CT)/magnetic resonance imaging (MRI) and negative CT angiography. Cerebrospinal fluid examination results were consistent with the manifestation of SAH. Spinal MRI performed subsequently showed an intradural extramedullary mass. The patient received surgery and was finally diagnosed with spinal cord schwannoma.
Source: Journal of Stroke and Cerebrovascular Diseases - May 23, 2016 Category: Neurology Authors: Hong-Mei Zhang, Yin-Xi Zhang, Qing Zhang, Shui-Jiang Song, Zhi-Rong Liu Tags: Case Studies Source Type: research
Four-Dimensional Computed Tomography Angiography Demonstrating a Ruptured Basilar Artery Aneurysm Causing Anterior Cerebral Circulation Arrest
A 61-year-old woman suffered a pronounced subarachnoid hemorrhage. Conventional computed tomography angiography (CTA) showed no enhancement of the intracranial vasculature, whereas there was normal contrast enhancement of bilateral external carotid artery branches. Subsequent four-dimensional computed tomography angiography (4D-CTA) demonstrated active contrast leakage out of a ruptured basilar tip aneurysm, whereas there was no enhancement of the anterior circulation at any time point, consistent with intracranial anterior circulation arrest.
Source: Journal of Stroke and Cerebrovascular Diseases - May 30, 2016 Category: Neurology Authors: Hans G.J. Kortman, Hieronymus D. Boogaarts, Mathias Prokop, Frederick J.A. Meijer Tags: Case Studies Source Type: research
Subarachnoid Hemorrhage due to Spinal Cord Schwannoma Presenting Findings Mimicking Meningitis
We report an unusual case of spinal SAH mimicking meningitis with normal brain computed tomography (CT)/magnetic resonance imaging (MRI) and negative CT angiography. Cerebrospinal fluid examination results were consistent with the manifestation of SAH. Spinal MRI performed subsequently showed an intradural extramedullary mass. The patient received surgery and was finally diagnosed with spinal cord schwannoma.
Source: Journal of Stroke and Cerebrovascular Diseases - May 23, 2016 Category: Neurology Authors: Hong-Mei Zhang, Yin-Xi Zhang, Qing Zhang, Shui-Jiang Song, Zhi-Rong Liu Tags: Case Studies Source Type: research
Factors Affecting Attenuation of Dural Sinuses on Noncontrasted Computed Tomography Scan
Noncontrasted computed tomography (NCCT) is used as the initial neuroimaging test of choice for patients who present with new-onset neurological symptoms. An apparently hyperattenuated venous sinus may lead to the suspicion of cerebral venous sinus thrombosis (CVST). Improved understanding of all factors that can affect attenuation of dural sinuses can guide triage of patients to or from further investigations of suspected CVST. The purpose of this retrospective study was to assess the effect of different factors including hematocrit (HCT), hemoglobin (Hb), age, BUN/Cr ratio (blood urea nitrogen-to-creatinine ratio), and g...
Source: Journal of Stroke and Cerebrovascular Diseases - July 31, 2016 Category: Neurology Authors: Nosaiba T. Al-Ryalat, Saif Aldeen S. AlRyalat, Lna W. Malkawi, Ethar F. Al-Zeena, Mahasen S. Al Najar, Azmy M. Hadidy Source Type: research
Computed Tomography Perfusion Deficits during the Baseline Period in Aneurysmal Subarachnoid Hemorrhage Are Predictive of Delayed Cerebral Ischemia
Delayed cerebral ischemia (DCI) is a frequent and fearful complication following aneurysmal subarachnoid hemorrhage (aSAH). The aim of this study is to assess the diagnostic accuracy of computed tomography perfusion (CTP) during an admission baseline period for the prediction of DCI.
Source: Journal of Stroke and Cerebrovascular Diseases - October 31, 2016 Category: Neurology Authors: Yuxia Duan, Haoli Xu, Rui Li, Kuikui Zheng, Zilong Hu, Nan Wu, Yunjun Yang, Qichuan Zhuge, Weijian Chen Source Type: research
Clinical Outcome Predicted by Collaterals Depends on Technical Success of Mechanical Thrombectomy in Middle Cerebral Artery Occlusion
This study aimed to analyze the effects of technical outcome of mechanical thrombectomy (MTE) on the associations between collateral status, assessed with pretreatment computed tomography angiography (CTA), and neurological and functional outcome, as well as associations between collaterals and metabolic risk factors (arterial hypertension, diabetes, hyperlipidemia, overweight).
Source: Journal of Stroke and Cerebrovascular Diseases - November 13, 2016 Category: Neurology Authors: Alexandra S. Gersing, Benedikt J. Schwaiger, Justus F. Kleine, Johannes Kaesmacher, Silke Wunderlich, Benjamin Friedrich, Sascha Prothmann, Claus Zimmer, Tobias Boeckh-Behrens Source Type: research
Utility of Urgent Computed Tomography Angiography in the Setting of Intraparenchymal Brain Hemorrhage
Patients presenting with an intracerebral hemorrhage (ICH) generally have an initial noncontrast computed tomography (NCCT) of the brain. Computed tomography angiography (CTA) can help identify secondary causes of ICH and detect a “spot sign.” We hypothesized that performing an urgent CTA in the setting of a presumed primary ICH has only limited utility and did not alter urgent management.
Source: Journal of Stroke and Cerebrovascular Diseases - November 24, 2016 Category: Neurology Authors: Omran Kaskar, Larry B. Goldstein Source Type: research
Assessment of Hemodynamic Compromise Using Computed Tomography Perfusion in Combination with 123I-IMP Single-Photon Emission Computed Tomography without Acetazolamide Challenge Test
In this study, we investigated whether CT perfusion in combination with resting state 123I-IMP SPECT could be used instead of the acetazolamide challenge test to evaluate hemodynamic compromise in patients with atherosclerotic occlusive disease.
Source: Journal of Stroke and Cerebrovascular Diseases - December 5, 2016 Category: Neurology Authors: Atsumu Hashimoto, Takeshi Mikami, Katsuya Komatsu, Shouhei Noshiro, Tohru Hirano, Masahiko Wanibuchi, Nobuhiro Mikuni Source Type: research
Different diagnosis with Dual energy CT imaging between hemorrhage and contrast agents for acute revascularization therapy patients
【Introduction】After acute revascularization with endovascular technique, sometimes it is difficult to distinguish hemorrhage and contrast agents in postoperative CT scans.
Source: Journal of Stroke and Cerebrovascular Diseases - March 18, 2017 Category: Neurology Authors: Masataka Hayashi, Kotaro Fukuda, Isamu Miura, Akane Tanda, Tomomi Ishikawa, Akitsugu Kawashima, Takakazu Kawamata Source Type: research
