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Iizuka K, Takekawa H, Iwasaki A, Igarashi H, Suzuki K, Kobayashi S, Tsukui D, Hirata K. Suitable methods of measuring acceleration time in the diagnosis of internal carotid artery stenosis. J Med Ultrason (2001) 2020; 47:327-333. [PMID: 31912319 PMCID: PMC7181545 DOI: 10.1007/s10396-019-01000-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/03/2019] [Indexed: 11/12/2022]
Abstract
Purpose To enhance the utility of acceleration time (AcT) in the diagnosis of internal carotid artery (ICA) stenosis, we assessed the value of AcT measurements with different waveform patterns. Methods Ninety-three patients with acute atherothrombotic cerebral infarction were enrolled, and they underwent both carotid ultrasonography and digital subtraction angiography (DSA). AcT was determined by a conventional procedure (using the first peak point or the bending point) and the peak systolic velocity (PSV) procedure. The AcT ratio was calculated as (AcT of ICA)/(AcT of the ipsilateral common carotid artery). We evaluated the correlation of stenosis rate as assessed by the North American Symptomatic Carotid Endarterectomy Trial method using DSA (DSA-NASCET) with the AcT of ICA (ICA-AcT), the AcT ratio measured by the conventional procedure (conventional AcT ratio), and the AcT ratio measured by the PSV procedure (PSV AcT ratio). The area under receiver operating characteristic curves (AUC) for DSA-NASCET was calculated based on the ICA-AcT and AcT ratio. Results Forty-five vessels had 50% or greater ICA stenosis. DSA-NASCET was positively correlated with the conventional AcT ratio (r = 0.723), conventional ICA-AcT (r = 0.638), and PSV AcT ratio (r = 0.245). The corresponding AUCs for ICA stenosis ≥ 50% were 0.971, 0.886, and 0.572, respectively. Conclusion We demonstrated the usefulness of the conventional procedure for diagnosing stenosis of ICA origin using AcT and showed that the AcT ratio was a more beneficial parameter than AcT.
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Affiliation(s)
- Kentaro Iizuka
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan.,Stroke Center, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan
| | - Hidehiro Takekawa
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan. .,Stroke Center, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan. .,Center of Medical Ultrasonics, Dokkyo Medical University, Tochigi, Japan.
| | - Akio Iwasaki
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan.,Stroke Center, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan
| | - Haruki Igarashi
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan.,Stroke Center, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi, 321-0293, Japan
| | - Keisuke Suzuki
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Saro Kobayashi
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Daisuke Tsukui
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Koichi Hirata
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
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