Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy
Abstract Background Dynamic axial computed tomographic angiography (dynax–CTA), covering a thin width, with a focus on the bilateral middle cerebral artery (MCA), can quickly visualize the internal carotid artery (ICA) or MCA occlusion. We aimed to investigate whether dynax–CTA appropriately evaluat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2021-06-01
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| Series: | BMC Neurology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s12883-021-02284-8 |
| _version_ | 1819083831017209856 |
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| author | Takahisa Mori Kazuhiro Yoshioka Wataru Mori Yuhei Tanno |
| author_facet | Takahisa Mori Kazuhiro Yoshioka Wataru Mori Yuhei Tanno |
| author_sort | Takahisa Mori |
| collection | DOAJ |
| description | Abstract Background Dynamic axial computed tomographic angiography (dynax–CTA), covering a thin width, with a focus on the bilateral middle cerebral artery (MCA), can quickly visualize the internal carotid artery (ICA) or MCA occlusion. We aimed to investigate whether dynax–CTA appropriately evaluated the collateral status coupled with the upper limit of the onset-to-reperfusion (OtR) time to achieve a major neurological improvement (MNI) at a 24-h follow-up examination after mechanical thrombectomy (MT). Methods We included acute ischemic stroke patients admitted from 2018 to 2020 who underwent dynax–CTA on admission and emergent MT for ICA or MCA occlusion. We performed dynax–CTA using an 80-row CT scanner and acquired 25 volume scans, consisting of 40 images of 1-mm thickness and 4-cm width. We classified the collateral status as good, intermediate, and poor based on MCA branch opacification. We evaluated the collateral status and the upper OtR time limit to achieve MNI. Results Forty-eight patients met our inclusion criteria. Dynax–CTA findings demonstrated MCA and ICA occlusion in 30 and 18 patients, respectively. The collateral status was good, intermediate, and poor in four, 25, and 19 patients, respectively. The upper limits of the OtR time for MNI were 3.63, 8.08, and 8.67 h in patients with poor, intermediate, and intermediate or good collateral status, respectively. Conclusions Dynax–CTA appropriately evaluated the collateral status coupled with the upper limit of the OtR time before performing MT. |
| first_indexed | 2024-12-21T20:38:49Z |
| format | Article |
| id | doaj.art-3245538fa8e54977a1a1af28552130a3 |
| institution | Directory Open Access Journal |
| issn | 1471-2377 |
| language | English |
| last_indexed | 2024-12-21T20:38:49Z |
| publishDate | 2021-06-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Neurology |
| spelling | doaj.art-3245538fa8e54977a1a1af28552130a32022-12-21T18:51:01ZengBMCBMC Neurology1471-23772021-06-012111810.1186/s12883-021-02284-8Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomyTakahisa Mori0Kazuhiro Yoshioka1Wataru Mori2Yuhei Tanno3Department of Stroke Treatment, Shonan Kamakura General HospitalDepartment of Stroke Treatment, Shonan Kamakura General HospitalDepartment of Stroke Treatment, Shonan Kamakura General HospitalDepartment of Stroke Treatment, Shonan Kamakura General HospitalAbstract Background Dynamic axial computed tomographic angiography (dynax–CTA), covering a thin width, with a focus on the bilateral middle cerebral artery (MCA), can quickly visualize the internal carotid artery (ICA) or MCA occlusion. We aimed to investigate whether dynax–CTA appropriately evaluated the collateral status coupled with the upper limit of the onset-to-reperfusion (OtR) time to achieve a major neurological improvement (MNI) at a 24-h follow-up examination after mechanical thrombectomy (MT). Methods We included acute ischemic stroke patients admitted from 2018 to 2020 who underwent dynax–CTA on admission and emergent MT for ICA or MCA occlusion. We performed dynax–CTA using an 80-row CT scanner and acquired 25 volume scans, consisting of 40 images of 1-mm thickness and 4-cm width. We classified the collateral status as good, intermediate, and poor based on MCA branch opacification. We evaluated the collateral status and the upper OtR time limit to achieve MNI. Results Forty-eight patients met our inclusion criteria. Dynax–CTA findings demonstrated MCA and ICA occlusion in 30 and 18 patients, respectively. The collateral status was good, intermediate, and poor in four, 25, and 19 patients, respectively. The upper limits of the OtR time for MNI were 3.63, 8.08, and 8.67 h in patients with poor, intermediate, and intermediate or good collateral status, respectively. Conclusions Dynax–CTA appropriately evaluated the collateral status coupled with the upper limit of the OtR time before performing MT.https://doi.org/10.1186/s12883-021-02284-8IschemiaStrokeComputed tomography angiographyThrombectomyReperfusion |
| spellingShingle | Takahisa Mori Kazuhiro Yoshioka Wataru Mori Yuhei Tanno Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy BMC Neurology Ischemia Stroke Computed tomography angiography Thrombectomy Reperfusion |
| title | Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| title_full | Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| title_fullStr | Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| title_full_unstemmed | Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| title_short | Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| title_sort | collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy |
| topic | Ischemia Stroke Computed tomography angiography Thrombectomy Reperfusion |
| url | https://doi.org/10.1186/s12883-021-02284-8 |
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