None listed
Conditions
Interventions
None listed
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1) Age: 18 years or older 2) Period: January 1, 2017 to December 31, 2022 3) Data on patients who underwent brain CTA due to suspected LVO among patients who visited the emergency rooms of Chonnam National University Hospital and Daejeon Eulji University Hospital. 4) Data of patients with corrupt CTA 5) Guest data whose ownership is recognized for two reasons 6) Data from patients with CTA plus section thickness of 0.5 to 2.0 mm
Exclusion criteria
Exclusion criteria: 1) Patients with symptomatic LVO and asymptomatic LVO 2) Patients who took a brain CTA image, but an error occurred in the DICOM storage format and the image could not be read, making analysis impossible 3) A patient who had a brain CTA image taken, but analysis was not possible because the area within the brain could not be diagnosed due to strong metal artifacts. 4) Patients with insufficient analysis due to missing slices in brain CTA images 5) Those who have had a brain CTA image taken, but the subject's age, gender, date of shooting, and CT image sequence information for identification are unclear. 6) Patients who do not have enough vascular information to determine LVO because the contrast agent is insufficient or the contrast agent does not sufficiently fill the blood vessels. 7) Patients used for artificial intelligence model learning and internal verification
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The sensitivity and specificity of the software (JBS-LVO) comparing the LVO presence diagnosis result with the reference standard. | — |
Secondary
| Measure | Time frame |
|---|---|
| Predictive sensitivity and specificity of the software (JBS-LVO) by location of large vessel occlusion (carotid artery [ICA], proximal middle cerebral artery [M1], distal middle cerebral artery [M2]) | — |
Countries
Korea, Republic of
Contacts
Chonnam National University Hospital