T Umemura1, T Hatano2, T Ogura2, T Miyata2, Y Agawa2, H Nakajima2, R Tomoyose2, H Sakamoto2, Y Tsujimoto2, Y Nakazawa2, T Wakabayashi2, T Hashimoto3, R Fujiki3, W Shiraishi3, I Nagata2. 1. From the Department of Neurosurgery (T.U., T.H., T.O., T.M., Y.A., N.H., R.T., H.S., Y.T., Y.N., T.W., I.N.), Stroke Center, Kokura Memorial Hospital, Kitakyushu City, Japan takeru.u115@gmail.com. 2. From the Department of Neurosurgery (T.U., T.H., T.O., T.M., Y.A., N.H., R.T., H.S., Y.T., Y.N., T.W., I.N.), Stroke Center, Kokura Memorial Hospital, Kitakyushu City, Japan. 3. Department of Neurology (T.H., R.F., W.B.), Stroke Center, Kokura Memorial Hospital, Kitakyushu City, Japan.
Abstract
BACKGROUND AND PURPOSE: In patients with ischemic stroke, DWI lesions can occasionally be reversed by reperfusion therapy. This study aimed to ascertain the relationship between ADC levels and DWI reversal in patients with acute ischemic stroke who underwent recanalization treatment. MATERIALS AND METHODS: We conducted a retrospective cohort study in patients with acute ischemic stroke who underwent endovascular mechanical thrombectomy with successful recanalization between April 2017 and March 2021. DWI reversal was assessed through follow-up MR imaging approximately 24 hours after treatment. RESULTS: In total, 118 patients were included. DWI reversal was confirmed in 42 patients. The ADC level in patients with reversal was significantly higher than that in patients without reversal. Eighty-three percent of patients with DWI reversal areas had mean ADC levels of ≥520 × 10-6 mm2/s, and 71% of patients without DWI reversal areas had mean ADC levels of <520 × 10-6 mm2/s. The mean ADC threshold was 520 × 10-6 mm2/s with a sensitivity and specificity of 71% and 83%, respectively. In multivariate analysis, the mean ADC level (OR, 1.023; 95% CI, 1.013-1.033; P < .0001) was independently associated with DWI reversal. Patients with DWI reversal areas had earlier neurologic improvement (NIHSS at 7 days) than patients without reversal areas (P < .0001). CONCLUSIONS: In acute ischemic stroke, the ADC value is independently associated with DWI reversal. Lesions with a mean ADC of ≥520 × 10-6 mm2/s are salvageable by mechanical thrombectomy, and DWI reversal areas regain neurologic function. The ADC value is easily assessed and is a useful tool to predict viable lesions.
BACKGROUND AND PURPOSE: In patients with ischemic stroke, DWI lesions can occasionally be reversed by reperfusion therapy. This study aimed to ascertain the relationship between ADC levels and DWI reversal in patients with acute ischemic stroke who underwent recanalization treatment. MATERIALS AND METHODS: We conducted a retrospective cohort study in patients with acute ischemic stroke who underwent endovascular mechanical thrombectomy with successful recanalization between April 2017 and March 2021. DWI reversal was assessed through follow-up MR imaging approximately 24 hours after treatment. RESULTS: In total, 118 patients were included. DWI reversal was confirmed in 42 patients. The ADC level in patients with reversal was significantly higher than that in patients without reversal. Eighty-three percent of patients with DWI reversal areas had mean ADC levels of ≥520 × 10-6 mm2/s, and 71% of patients without DWI reversal areas had mean ADC levels of <520 × 10-6 mm2/s. The mean ADC threshold was 520 × 10-6 mm2/s with a sensitivity and specificity of 71% and 83%, respectively. In multivariate analysis, the mean ADC level (OR, 1.023; 95% CI, 1.013-1.033; P < .0001) was independently associated with DWI reversal. Patients with DWI reversal areas had earlier neurologic improvement (NIHSS at 7 days) than patients without reversal areas (P < .0001). CONCLUSIONS: In acute ischemic stroke, the ADC value is independently associated with DWI reversal. Lesions with a mean ADC of ≥520 × 10-6 mm2/s are salvageable by mechanical thrombectomy, and DWI reversal areas regain neurologic function. The ADC value is easily assessed and is a useful tool to predict viable lesions.
Authors: Bruce C V Campbell; Archana Purushotham; Soren Christensen; Patricia M Desmond; Yoshinari Nagakane; Mark W Parsons; Maarten G Lansberg; Michael Mlynash; Matus Straka; Deidre A De Silva; Jean-Marc Olivot; Roland Bammer; Gregory W Albers; Geoffrey A Donnan; Stephen M Davis Journal: J Cereb Blood Flow Metab Date: 2011-07-20 Impact factor: 6.200
Authors: Archana Purushotham; Bruce C V Campbell; Matus Straka; Michael Mlynash; Jean-Marc Olivot; Roland Bammer; Stephanie M Kemp; Gregory W Albers; Maarten G Lansberg Journal: Int J Stroke Date: 2013-06-27 Impact factor: 5.266
Authors: Joonsang Yoo; Jin Wook Choi; Seong-Joon Lee; Ji Man Hong; Jeong-Ho Hong; Chang-Hyun Kim; Yong-Won Kim; Dong-Hun Kang; Yong-Sun Kim; Yang-Ha Hwang; Bruce Ovbiagele; Andrew M Demchuk; Jin Soo Lee; Sung-Il Sohn Journal: Stroke Date: 2019-05-02 Impact factor: 7.914
Authors: Hakan Ay; Karen L Furie; Aneesh Singhal; Wade S Smith; A Gregory Sorensen; Walter J Koroshetz Journal: Ann Neurol Date: 2005-11 Impact factor: 10.422
Authors: Maarten G Lansberg; Vincent N Thijs; Roland Bammer; Jean-Marc Olivot; Michael P Marks; Lawrence R Wechsler; Stephanie Kemp; Gregory W Albers Journal: Stroke Date: 2008-07-17 Impact factor: 7.914
Authors: A Dávalos; M Blanco; S Pedraza; R Leira; M Castellanos; J M Pumar; Y Silva; J Serena; J Castillo Journal: Neurology Date: 2004-06-22 Impact factor: 9.910
Authors: Robert G Hart; Hans-Christoph Diener; Shelagh B Coutts; J Donald Easton; Christopher B Granger; Martin J O'Donnell; Ralph L Sacco; Stuart J Connolly Journal: Lancet Neurol Date: 2014-04 Impact factor: 44.182