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Gao F, Cong J, Duan Y, Zhao W, Zhu Z, Zheng Y, Jin L, Ji M, Li M. Screening of postoperative cerebral hyperperfusion syndrome in moyamoya disease: a three-dimensional pulsed arterial-spin labeling magnetic resonance imaging approach. Front Neurosci 2023; 17:1274038. [PMID: 37928741 PMCID: PMC10620603 DOI: 10.3389/fnins.2023.1274038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/02/2023] [Indexed: 11/07/2023] Open
Abstract
Introduction Moyamoya disease (MMD) is associated with a risk of postoperative cerebral hyperperfusion syndrome (CHS) after revascularization surgery. This study aimed to explore the feasibility of using three-dimensional pulsed arterial spin labeling (3D PASL) and phase contrast (PC) magnetic resonance imaging (MRI) for predicting CHS occurrence in patients with MMD before revascularization surgery. Methods Overall, 191 adult patients (207 hemispheres) with MMD who underwent combined revascularization surgery were included in this study. Preoperative 3D PASL-MRI and PC-MRI were performed before surgery. The PASL-MRI data were analyzed using SPM12. Patient clinical information, average flow, and preoperative cerebral blood flow (CBF) were compared between the non-CHS and CHS groups. Results Among the patients, 45 (21.74%) developed CHS after revascularization surgery. No significant differences were noted in age, sex, clinical symptoms, hypertension, diabetes, surgical side, or history of revascularization surgery between the non-CHS and CHS groups. However, the average flow in the superficial temporal artery was significantly lower in the CHS group than in the non-CHS group (p < 0.05). Furthermore, 11 clusters of preoperative CBF values were significantly greater in the CHS group than in the non-CHS group [p < 0.05, false discovery rate (FDR) corrected]. A significant correlation was also observed between the preoperative time-to-flight MR angiography (MRA) scores and CBF values in patients with MMD (p < 0.05). Conclusion Compare patients with lower preoperative CBF and higher preoperative average flow in the STA, patients with higher preoperative CBF and lower preoperative average flow in the STA are more likely to develop postoperative CHS Preoperative PASL-MRI and PC-MRI examinations may help to screen patients at high risk of developing CHS after revascularization surgery.
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Affiliation(s)
- Feng Gao
- Department of Radiology, Huadong Hospital Fudan University, Shanghai, China
| | - Jianhua Cong
- Department of Medical Centre, Huadong Hospital Fudan University, Shanghai, China
| | - Yu Duan
- Department of Neurosurgery, Huadong Hospital Fudan University, Shanghai, China
| | - Wei Zhao
- Department of Radiology, Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhenfang Zhu
- Department of Radiology, Huadong Hospital Fudan University, Shanghai, China
| | - Yu Zheng
- Department of Magnetic Resonance, Lanzhou University Second Hospital, Lanzhou, China
| | - Liang Jin
- Department of Radiology, Huadong Hospital Fudan University, Shanghai, China
| | - Ming Ji
- Department of Radiology, Huadong Hospital Fudan University, Shanghai, China
| | - Ming Li
- Department of Radiology, Huadong Hospital Fudan University, Shanghai, China
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A subtle connection between crossed cerebellar diaschisis and supratentorial collateral circulation in subacute and chronic ischemic stroke. J Stroke Cerebrovasc Dis 2022; 31:106856. [DOI: 10.1016/j.jstrokecerebrovasdis.2022.106856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/02/2022] [Accepted: 10/20/2022] [Indexed: 11/21/2022] Open
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Kimura K, Kubo Y, Dobashi K, Katakura Y, Chida K, Kobayashi M, Yoshida K, Fujiwara S, Terasaki K, Kawamura T, Ogasawara K. Angiographic, Cerebral Hemodynamic, and Cognitive Outcomes of Indirect Revascularization Surgery Alone for Adult Patients With Misery Perfusion due to Ischemic Moyamoya Disease. Neurosurgery 2022; 90:676-683. [PMID: 35311740 DOI: 10.1227/neu.0000000000001907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/05/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Revascularization surgery for adult patients with ischemic moyamoya disease (MMD) may improve both cognitive function and cerebral perfusion. OBJECTIVE To determine angiographic, cerebral hemodynamic, and cognitive outcomes of indirect revascularization surgery alone for adult patients with misery perfusion due to ischemic MMD (IDR group) and to test the superiority of indirect revascularization surgery for cognitive improvement by conducting comparisons with historical control patients who had undergone direct revascularization surgery (DR group) through prospective cohort study with historical controls. METHODS Twenty adult patients with cerebral misery perfusion underwent encephalo-duro-myo-arterio-pericranial-synangiosis alone. Cerebral angiography through arterial catheterization, brain perfusion single-photon emission computed tomography, and neuropsychological testing were performed preoperatively and at 6 months postoperatively. RESULTS In 17 patients of the IDR group, collateral flows that were newly formed after surgery on angiograms fed more than one-third of the middle cerebral artery (MCA) cortical territory. In the IDR group, perfusion in the MCA territory was significantly increased after surgery (P < .0001), and the difference in MCA perfusion between before and after surgery was significantly greater (P = .0493) compared with the DR group. Improved cognition was significantly more frequent in the IDR group (65%) than in the DR group (31%, P = .0233). CONCLUSION Indirect revascularization surgery alone forms sufficient collateral circulation, improves cerebral hemodynamics, and recovers cognitive function in adult patients with misery perfusion due to ischemic MMD. The latter 2 beneficial effects may be higher when compared with patients undergoing direct revascularization surgery.
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Affiliation(s)
- Kazuto Kimura
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Yoshitaka Kubo
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Kazumasa Dobashi
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Yasukazu Katakura
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Kohei Chida
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
- Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, Japan
| | - Masakazu Kobayashi
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
- Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, Japan
| | - Kenji Yoshida
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Shunrou Fujiwara
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
| | - Kazunori Terasaki
- Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, Japan
| | | | - Kuniaki Ogasawara
- Department of Neurosurgery, School of Medicine, Iwate Medical University, Japan
- Institute for Biomedical Sciences, School of Medicine, Iwate Medical University, Japan
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Yasuda S, Katakura Y, Kubo Y, Dobashi K, Kimura K, Fujiwara S, Chida K, Akamatsu Y, Kobayashi M, Yoshida K, Terasaki K, Ogasawara K. Recovery of cortical neurotransmitter receptor function and its impact on cognitive improvement after indirect revascularization surgery alone for adult patients with ischemic moyamoya disease: 123I-iomazenil single-photon emission computed tomography study. World Neurosurg 2022; 164:e1135-e1142. [PMID: 35660480 DOI: 10.1016/j.wneu.2022.05.118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/25/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE Brain 123I-iomazenil single-photon emission computed tomography (SPECT) can assess the distribution of the binding potential of central benzodiazepine receptors in the cerebral cortex. This binding potential may reflect neuronal function in viable tissues. The present prospective study using brain 123I-iomazenil SPECT aimed to determine whether improvements in cognitive function after indirect revascularization surgery alone are associated with postoperative recovery in neurotransmitter receptor function in the affected cerebral hemisphere among adult patients with moyamoya disease (MMD) accompanied by ischemic presentation due to misery perfusion. METHODS Twenty-two patients who underwent indirect revascularization surgery alone also underwent brain SPECT scanning at 180 minutes after 123I-iomazenil administration and neuropsychological testing before and at 6 months after surgery. The affected-to-contralateral cerebral hemispheric asymmetry of tracer uptake before and after surgery was then calculated. RESULTS The asymmetry of tracer uptake was significantly increased after surgery (p < 0.0001). A significant difference between the pre- and postoperative asymmetry of tracer uptake was seen in patients with improved cognition compared with those with unchanged cognition (p = 0.0001). The area under the receiver operating characteristic curve was 0.99 for the difference between the pre- and postoperative asymmetry of tracer uptake to assess the ability to discriminate patients with improved cognition from those with unchanged cognition. CONCLUSIONS Improvements in cognitive function after indirect revascularization surgery alone are associated with postoperative recovery in the binding potential of central benzodiazepine receptors in the affected cerebral hemisphere in adult patients with MMD accompanied by ischemic presentation due to misery perfusion.
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Affiliation(s)
- Sara Yasuda
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Yasukazu Katakura
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Yoshitaka Kubo
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kazumasa Dobashi
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kazuto Kimura
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Shunrou Fujiwara
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kohei Chida
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Yosuke Akamatsu
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Masakazu Kobayashi
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kazunori Terasaki
- Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Yahaba, Japan
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University School of Medicine, Yahaba, Japan.
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Katakura Y, Kubo Y, Dobashi K, Kimura K, Fujiwara S, Chida K, Kobayashi M, Yoshida K, Terasaki K, Ogasawara K. Delayed development of cerebral atrophy after cerebral hyperperfusion following arterial bypass for adult patients with ischemic moyamoya disease: supplementary analysis of a 5-year prospective cohort. Acta Neurochir (Wien) 2022; 164:1037-1045. [PMID: 35122551 DOI: 10.1007/s00701-022-05141-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/27/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Adult patients with moyamoya disease (MMD) occasionally exhibit cerebral hyperperfusion after arterial bypass surgery, leading to persistent cognitive decline. The present supplementary analysis of a prospective 5-year cohort study aimed to determine whether cerebral hyperperfusion after arterial bypass surgery for adult patients with misery perfusion due to ischemic MMD causes cerebral atrophy, and whether the development of cerebral atrophy is related to persistent cognitive decline. METHODS In total, 31 patients who underwent arterial bypass surgery also underwent fluid-attenuated inversion recovery (FLAIR) magnetic resonance imaging (MRI) and neuropsychological testing before surgery and at the end of a 5-year follow-up. The development of cerebral hyperperfusion and hyperperfusion syndrome after surgery was defined based on brain perfusion single-photon emission computed tomography (SPECT) findings and clinical symptoms. Univariate and multivariate logistic regression analyses of factors related to the development of cerebral atrophy on FLAIR MRI or cognitive decline on neuropsychological testing at the end of the 5-year follow-up were performed. RESULTS Eleven patients (35%) developed cerebral atrophy in the frontal lobe where the superficial temporal artery was anastomosed. Cerebral hyperperfusion on brain perfusion SPECT (odds ratio [OR], 50.6; p = 0.0008) or cerebral hyperperfusion syndrome (OR, 41.8; p = 0.0026) was independently associated with the development of cerebral atrophy, and cerebral atrophy development was significantly associated with cognitive decline (OR, 47.7; p = 0.0010). CONCLUSIONS Cerebral hyperperfusion after arterial bypass surgery for adult patients with misery perfusion due to ischemic MMD can cause cerebral atrophy related to persistent cognitive decline.
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Affiliation(s)
- Yasukazu Katakura
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Yoshitaka Kubo
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Kazumasa Dobashi
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Kazuto Kimura
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Shunrou Fujiwara
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Kohei Chida
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Masakazu Kobayashi
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan
| | - Kazunori Terasaki
- Institute for Biomedical Sciences, Iwate Medical University School of Medicine, Iwate, Japan
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University School of Medicine, 2-1-1 Idaidoori Yahaba-cho, Shiwa-gun, Iwate, 020-3695, Japan.
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Dobashi K, Kubo Y, Kimura K, Katakura Y, Chida K, Kobayashi M, Yoshida K, Fujiwara S, Terasaki K, Ogasawara K. De Novo Cerebral Microbleeds and Cognitive Decline in Cerebral Hyperperfusion After Direct Revascularization for Adult Moyamoya Disease. J Stroke Cerebrovasc Dis 2021; 31:106166. [PMID: 34768143 DOI: 10.1016/j.jstrokecerebrovasdis.2021.106166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/02/2021] [Accepted: 10/04/2021] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVES Adult patients with moyamoya disease (MMD) occasionally develop cognitive decline due to cerebral hyperperfusion following direct revascularization surgery. However, how the hyperperfusion phenomenon contributes to declines in cognitive function remains unclear. The present supplementary analysis of a prospective study aimed to determine whether cerebral hyperperfusion following direct revascularization surgery for adult MMD with ischemic presentation and misery perfusion leads to development of de novo cerebral microbleeds (CMBs) and whether postoperative cognitive decline is related to these CMBs. MATERIALS AND METHODS In total, 32 patients who underwent direct revascularization surgery also underwent T2*-weighted magnetic resonance imaging (T2*WI) and neuropsychological testing before and 2 months after surgery. Development of cerebral hyperperfusion and hyperperfusion syndrome following surgery was defined based on brain perfusion single-photon emission computed tomography (SPECT) findings and clinical symptoms. RESULTS Cerebral hyperperfusion on brain perfusion SPECT (95% confidence interval [CI], 1.1-10.8; p = 0.0175) or cerebral hyperperfusion syndrome (95%CI, 1.3-15.3; p = 0.0029) was significantly associated with postoperatively increased CMBs on T2*WI. Postoperatively increased CMBs were significantly associated with postoperative cognitive decline (95%CI, 1.8-20.4, p = 0.0041). For patients with cerebral hyperperfusion on brain perfusion SPECT, the incidence of postoperative cognitive decline was significantly greater in patients with than in those without postoperatively increased CMBs (p = 0.0294). CONCLUSIONS Cerebral hyperperfusion following direct revascularization surgery for adult MMD with ischemic presentation and misery perfusion contributes to the development of de novo CMBs and postoperative cognitive decline is related to these CMBs.
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Affiliation(s)
- Kazumasa Dobashi
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Yoshitaka Kubo
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Kazuto Kimura
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Yasukazu Katakura
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Kohei Chida
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Masakazu Kobayashi
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Shunrou Fujiwara
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Kazunori Terasaki
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan
| | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University, 2-1-1 Idai-dori Yahaba-cho, Iwate 020-3695, Japan.
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Sato S, Fujiwara S, Miyoshi K, Chida K, Kobayashi M, Kubo Y, Yoshida K, Terasaki K, Ogasawara K. Improvement in gait function after carotid endarterectomy is associated with postoperative recovery in perfusion and neurotransmitter receptor function in the motor-related cerebral cortex: a 123I-iomazenil SPECT study. Nucl Med Commun 2020; 41:1161-1168. [PMID: 32815897 DOI: 10.1097/mnm.0000000000001275] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Carotid endarterectomy (CEA) often restores cerebral perfusion and neurotransmitter receptor function, which is seen on early and late images, respectively, on brain I-iomazenil single-photon emission computed tomography (SPECT). The reliability of gait-related parameters obtained using a triaxial accelerometer, a portable device for gait assessment, has been confirmed with test-retest measurements. The purpose of the present prospective cohort study was to determine whether improvement in gait function after CEA is associated with postoperative recovery in perfusion and neurotransmitter receptor function in the motor-related cerebral cortex. METHODS Gait testing using a triaxial accelerometer was performed preoperatively and 6 months postoperatively in 64 patients undergoing CEA for ipsilateral internal carotid artery stenosis (≥70%). I-iomazenil SPECT was also performed with scanning within 30 min (early images) and at 180 min (late images) after tracer administration before and after surgery. SPECT data were analyzed using a three-dimensional stereotactic surface projection, and motor (Brodmann 4) and premotor (Brodmann 6) cortexes in each hemisphere were combined and defined as the motor-related cortex. RESULTS Based on preoperative and postoperative gait testing, seven patients (11%) showed postoperative improved gait. Logistic regression analysis revealed that postoperative increase in I-iomazenil uptake in the motor-related cortex ipsilateral to surgery on early [95% confidence interval (CI), 4.32-365.21; P = 0.0477) or late (95% CI, 9.45-1572.57; P = 0.0173) images was an independent predictor of postoperative improved gait. CONCLUSIONS Improvement in gait function after CEA is associated with postoperative recovery in perfusion and neurotransmitter receptor function in the motor-related cerebral cortex.
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Affiliation(s)
- Shinpei Sato
- Department of Neurosurgery.,Cyclotron Research Center, Iwate Medical University, Morioka, Japan
| | | | | | | | - Masakazu Kobayashi
- Department of Neurosurgery.,Cyclotron Research Center, Iwate Medical University, Morioka, Japan
| | | | | | | | - Kuniaki Ogasawara
- Department of Neurosurgery.,Cyclotron Research Center, Iwate Medical University, Morioka, Japan
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Kubo Y, Koji T, Murakami T, Yoshida K, Matsumoto Y, Ogasawara K. Long-Term Outcomes of Cerebral Blood Flow and Neurotransmitter Receptor Function on Iodine-123-Iomazenil Single-Photon Emission Computed Tomography and Cognitive Assessments After Parent Artery Occlusion Combined with Cerebral Revascularization for Internal Carotid Artery Aneurysms. World Neurosurg 2020; 143:e199-e205. [PMID: 32810631 DOI: 10.1016/j.wneu.2020.07.119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/13/2020] [Accepted: 07/15/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Many studies of external-internal carotid artery (EC-IC) bypass as cerebral revascularization for unclippable internal carotid artery (ICA) aneurysms have reported surgical outcomes, including bypass patency and aneurysm resolution. However, no previous studies have assessed the long-term outcomes of cerebral blood flow (CBF), brain neural density, and cognition. The purpose of the present study was to evaluate the long-term outcomes of CBF and neurotransmitter receptor function using early and late images of iodine-123 (123I)-iomazenil (IMZ) single-photon emission computed tomography (SPECT) and the cognitive function of patients who had undergone EC-IC bypass for symptomatic aneurysms in the cavernous portion of the ICA. METHODS We performed a prospective observational study of 11 patients who had undergone superficial temporal artery-middle cerebral artery bypass or bypass using a saphenous vein graft for symptomatic aneurysms in the cavernous portion of the ICA. One patient experienced extensive infarction and, therefore, did not undergo postoperative testing. 123I-IMZ SPECT was performed with scanning at 23 minutes (early) and 180 minutes (late) after tracer administration before and after surgery. The preoperative and follow-up neuropsychological test scores from 6 patients were also analyzed. RESULTS None of 10 patients who had undergone EC-IC bypass showed reductions in CBF and brain neural density. In addition, the neuropsychological test scores had not changed significantly from preoperatively to postoperatively. CONCLUSION Using early and late 123I-IMZ SPECT, the present study has demonstrated that patients undergoing uncomplicated cerebral revascularization for unclippable ICA aneurysms will not experience reductions in CBF or neurotransmitter receptor function, and their cognitive function was not impaired.
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Affiliation(s)
- Yoshitaka Kubo
- Department of Neurosurgery, Iwate Medical University, Morioka, Japan.
| | - Takahiro Koji
- Department of Neurosurgery, Iwate Medical University, Morioka, Japan
| | | | - Kenji Yoshida
- Department of Neurosurgery, Iwate Medical University, Morioka, Japan
| | | | - Kuniaki Ogasawara
- Department of Neurosurgery, Iwate Medical University, Morioka, Japan
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Takahashi S, Horiguchi T. Relationship between ischaemic symptoms during the early postoperative period in patients with moyamoya disease and changes in the cerebellar asymmetry index. Clin Neurol Neurosurg 2020; 197:106090. [PMID: 32693340 DOI: 10.1016/j.clineuro.2020.106090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this study was to clarify the relationship between ischaemic symptoms during the early postoperative period in patients with moyamoya disease and changes in the cerebellar asymmetry index (AI), a parameter used to quantitatively identify crossed cerebellar diaschisis (CCD). PATIENTS AND METHODS We analysed the data of 18 patients with moyamoya disease who underwent quantitative IMP-cerebral blood flow SPECT at least once during the follow-up period. Cerebellar AI scores were calculated using the CBF of the cerebellum calculated automatically from multiple slices of SPECT images with automated ROI setup software and categorized and statistically examined according to the presence or absence of ischaemic symptoms. RESULTS The cerebellar AI calculated from SPECT performed in the patients who presented with ischaemic symptoms was 0.094 ± 0.023 (mean ± SD), which was significantly elevated compared to the value of 0.013 ± 0.025 (mean ± SD) calculated from SPECT performed when the patients did not present with ischaemic symptoms (p < 0.0001). Limiting the time of SPECT to calculate the cerebellar AI to be compared to the acute phase within 2 weeks after surgery did not change this trend, and again, the cerebellar AI was statistically significantly elevated in the presence of ischaemic symptoms (0.094 ± 0.023 (mean ± SD)) compared to the AI in the absence of ischaemic symptoms (0.000081 ± 0.026 (mean ± SD)) (p = 0.0003). In patients who underwent quantitative SPECT in the acute phase during the first postoperative week, the cerebellar AI values calculated from the results of SPECT performed during the preoperative period as well as multiple times during postoperative period were followed over time in each case. The cerebellar AI increased in patients who presented with symptoms of ischaemia postoperatively but then tended to decrease reversibly and approach zero with the disappearance of symptoms of ischaemia. CONCLUSIONS Since the cerebellar AI reflects the symptom of ischaemia in patients with moyamoya disease, especially in the early stage after revascularization surgery, and is a parameter that improves with symptom improvement, it seems to be useful for understanding the state of cerebral blood flow after bypass surgery in patients with moyamoya disease.
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Affiliation(s)
- Satoshi Takahashi
- Department of Neurosurgery, Keio University, School of Medicine, Tokyo, Japan.
| | - Takashi Horiguchi
- Department of Neurosurgery, Keio University, School of Medicine, Tokyo, Japan
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Yamasaki M, Yoshioka H, Kanemaru K, Yagi T, Hashimoto K, Senbokuya N, Kinouchi H. Detection of Transient Increase of Cerebral Blood Flow and Reversible Neuronal Dysfunction by Iodine-123-Iomazenil Single Photon Emission Computed Tomography After Cerebral Hyperperfusion Syndrome After Revascularization Surgery for Moyamoya Disease. World Neurosurg 2020; 141:335-338. [PMID: 32526363 DOI: 10.1016/j.wneu.2020.06.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 05/30/2020] [Accepted: 06/02/2020] [Indexed: 11/20/2022]
Abstract
BACKGROUND Early and late images of single photon emission computed tomography (SPECT) using 123I-iomazenil (123I-IMZ) can demonstrate cerebral blood flow and cortical neuronal viability. Hyperperfusion syndrome is one of the serious complications after revascularization surgery for moyamoya disease; therefore, the real-time observation of the hemodynamics and neuronal viability is important for the treatment after the revascularization. Here we report, a case of moyamoya disease where 123I-IMZ SPECT had a significant efficacy to delineate the hemodynamics and transient neuronal dysfunction in hyperperfusion state after revascularization. CASE DESCRIPTION A 47-year-old woman presented with motor aphasia 3 days after superficial temporal artery-middle cerebral artery anastomosis with indirect revascularization. Magnetic resonance imaging (MRI) on the same day showed no new ischemic changes but high intensities along the left frontal sulci observed on fluid-attenuated inversion recovery images, and 123I-IMZ SPECT demonstrated the increased uptake on the early images and the decreased uptake on the late images around the anastomosis site. The patient was completely recovered 1 month after surgery, and abnormal changes on MRI and 123I-IMZ SPECT returned to normal along with the symptom withdrawal. CONCLUSIONS These findings indicate that 123I-IMZ SPECT could be the index for the treatment of revascularization for obstructive vascular diseases such as moyamoya disease.
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Affiliation(s)
- Mami Yamasaki
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Hideyuki Yoshioka
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Kazuya Kanemaru
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Takashi Yagi
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Koji Hashimoto
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Nobuo Senbokuya
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan
| | - Hiroyuki Kinouchi
- Department of Neurosurgery, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Yamanashi, Japan.
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