Chengyi Zheng1, Benjamin C Sun2, Yi-Lin Wu3, Maros Ferencik4, Ming-Sum Lee5, Rita F Redberg6, Aniket A Kawatkar3, Visanee V Musigdilok3, Adam L Sharp3. 1. Research and Evaluation Department, Kaiser Permanente Southern California, 100 S Los Robles Ave, 2nd Floor, Pasadena, CA, 91101, USA. Chengyi.X.Zheng@kp.org. 2. Department of Emergency Medicine and Leonard Davis Institute, University of Pennsylvania, Philadelphia, PA, USA. 3. Research and Evaluation Department, Kaiser Permanente Southern California, 100 S Los Robles Ave, 2nd Floor, Pasadena, CA, 91101, USA. 4. Knight Cardiovascular Institute, Oregon Health and Science University, Portland, OR, USA. 5. Division of Cardiology, Kaiser Permanente Southern California, Los Angeles Medical Center, Los Angeles, CA, USA. 6. Division of Cardiology, University of California, San Francisco, San Francisco, CA, USA.
Abstract
BACKGROUND: Findings and interpretations of myocardial perfusion imaging (MPI) studies are documented in free-text MPI reports. MPI results are essential for research, but manual review is prohibitively time consuming. This study aimed to develop and validate an automated method to abstract MPI reports. METHODS: We developed a natural language processing (NLP) algorithm to abstract MPI reports. Randomly selected reports were double-blindly reviewed by two cardiologists to validate the NLP algorithm. Secondary analyses were performed to describe patient outcomes based on abstracted-MPI results on 16,957 MPI tests from adult patients evaluated for suspected ACS. RESULTS: The NLP algorithm achieved high sensitivity (96.7%) and specificity (98.9%) on the MPI categorical results and had a similar degree of agreement compared to the physician reviewers. Patients with abnormal MPI results had higher rates of 30-day acute myocardial infarction or death compared to patients with normal results. We identified issues related to the quality of the reports that not only affect communication with referring physicians but also challenges for automated abstraction. CONCLUSION: NLP is an accurate and efficient strategy to abstract results from the free-text MPI reports. Our findings will facilitate future research to understand the benefits of MPI studies but requires validation in other settings.
BACKGROUND: Findings and interpretations of myocardial perfusion imaging (MPI) studies are documented in free-text MPI reports. MPI results are essential for research, but manual review is prohibitively time consuming. This study aimed to develop and validate an automated method to abstract MPI reports. METHODS: We developed a natural language processing (NLP) algorithm to abstract MPI reports. Randomly selected reports were double-blindly reviewed by two cardiologists to validate the NLP algorithm. Secondary analyses were performed to describe patient outcomes based on abstracted-MPI results on 16,957 MPI tests from adult patients evaluated for suspected ACS. RESULTS: The NLP algorithm achieved high sensitivity (96.7%) and specificity (98.9%) on the MPI categorical results and had a similar degree of agreement compared to the physician reviewers. Patients with abnormal MPI results had higher rates of 30-day acute myocardial infarction or death compared to patients with normal results. We identified issues related to the quality of the reports that not only affect communication with referring physicians but also challenges for automated abstraction. CONCLUSION: NLP is an accurate and efficient strategy to abstract results from the free-text MPI reports. Our findings will facilitate future research to understand the benefits of MPI studies but requires validation in other settings.
Authors: JaeJin An; Fang Niu; Chengyi Zheng; Nazia Rashid; Robert A Mendes; Diana Dills; Lien Vo; Prianka Singh; Amanda Bruno; Daniel T Lang; Paul T Le; Kristin P Jazdzewski; Gustavus Aranda Journal: J Manag Care Spec Pharm Date: 2017-06
Authors: Edward P Ficaro; Venkatesh L Murthy; Alexis Poitrasson-Rivière; Jonathan B Moody; Jennifer M Renaud; Tomoe Hagio; Liliana Arida-Moody; Christopher Buckley; Richard L Weinberg Journal: J Nucl Cardiol Date: 2021-11-15 Impact factor: 3.872