The Reliability of a Grading System for Digital Subtraction Imaging Quality During Cervical Transforaminal Epidural Steroid Injection.
Pain Med
; 21(11): 3126-3132, 2020 11 01.
Article
em En
| MEDLINE
| ID: mdl-32167547
ABSTRACT
OBJECTIVE:
Digital subtraction imaging (DSI) decreases the risk of intravascular injection during cervical transforaminal epidural steroid injection (CTFESI); however, sequence acquisition and interpretation are operator-dependent skills. This study tests the reliability of a grading system to determine adequate DSI during CTFESI.SETTING:
Academic tertiary medical center.METHODS:
A grading scheme for adequate DSI quality during CTFESI was created by the study authors based on patient positioning, mask image, and volume of contrast injected. The inter-rater and intrarater reliability values of this grading scheme were tested using 50 DSI images evaluated by three raters during two distinct sessions separated by four weeks. Based on a power analysis, a sample of 50 scans was sufficient to detect significant correlations. Inter-rater reliability was determined by percent agreement between graders for dichotomized categories of "quality of DSI is adequate for safe C-TFESI" vs "quality of DSI is inadequate for safe C-TFESI." The percentage of agreement was reported, along with Gwet's agreement coefficient (AC). The intrarater (pre/post) correlation was assessed using Yule's Q statistics.RESULTS:
Correlation coefficients were interpreted as follows 0.00-0.19 "very weak," 0.20-0.39 "weak," 0.40-0.59 "moderate," 0.60-0.79 "strong," and 0.80-1.00 "very strong." Inter-rater reliability analyses demonstrated that the patient position category had "very strong" agreement, contrast volume had "strong" agreement, and mask image had "moderate" agreement. The overall inter-rater reliability was "moderate." All of the raters demonstrated "very strong" intrarater reliability.CONCLUSIONS:
The proposed grading system for adequate-quality DSI during CTFESI showed overall "moderate" and "very strong" inter- and intrarater reliability, respectively. This scheme provides an objective measure of DSI quality for CTFESI. Refinement is needed to improve the reliability of this scheme.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Esteroides
Limite:
Humans
Idioma:
En
Revista:
Pain Med
Assunto da revista:
NEUROLOGIA
/
PSICOFISIOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article