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The contrast dispersion pattern was classified as \u201cfocal,\u201d \u201clinear,\u201d or \u201ctram-track\u201d; the location was divided into \u201cextraforaminal,\u201d \u201cforaminal,\u201d or \u201crecessal.\u201d Pain was assessed before and 4\u00a0weeks after treatment using a numerical rating scale (0, no pain; 10, intolerable pain). Additionally, the patient global impression of change (PGIC) was assessed. The TFESI was performed by musculoskeletal radiologists (experience range: first year of musculoskeletal fellowship training to 19\u00a0years). Contrast pattern\/location and radiologist\u2019s experience were compared between \u201cgood responder\u201d (\u2265\u200950% pain reduction) and \u201cpoor responder\u201d (&lt;\u200950%). A <jats:italic>p<\/jats:italic>-value\u2009&lt;\u20090.05 was considered to be statistically significant.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Overall, CT-guided TFESI resulted in a substantial pain reduction in 46.6% of patients with discogenic radiculopathy. The contrast dispersion pattern and location had no effect on pain relief (<jats:italic>p<\/jats:italic>\u2009=\u20090.75 and <jats:italic>p<\/jats:italic>\u2009=\u20090.09) and PGIC (<jats:italic>p<\/jats:italic>\u2009=\u20090.70 and <jats:italic>p<\/jats:italic>\u2009=\u20090.21) 4\u00a0weeks after TFESI. Additionally, the experience of the radiologist had no influence on pain reduction (<jats:italic>p<\/jats:italic>\u2009=\u20090.92) or PGIC (<jats:italic>p<\/jats:italic>\u2009=\u20090.75). Regarding pre-interventional imaging findings, both the location and grading of nerve compression had no effect on pain relief (<jats:italic>p<\/jats:italic>\u2009=\u20090.91 and <jats:italic>p<\/jats:italic>\u2009=\u20090.85) and PGIC (<jats:italic>p<\/jats:italic>\u2009=\u20090.18 and <jats:italic>p<\/jats:italic>\u2009=\u20090.31).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Our results indicate that neither contrast agent dispersion\/location nor the experience of the radiologist allows predicting the therapeutic outcome 4\u00a0weeks after the procedure.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00256-021-03881-x","type":"journal-article","created":{"date-parts":[[2021,8,12]],"date-time":"2021-08-12T02:02:32Z","timestamp":1628733752000},"page":"783-793","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["CT-guided transforaminal epidural steroid injection for discogenic lumbar radiculopathy: influence of contrast dispersion and radiologist\u2019s experience on clinical outcome"],"prefix":"10.1007","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9273-0032","authenticated-orcid":false,"given":"Christoph","family":"Germann","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dimitri N.","family":"Graf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin","family":"Fritz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reto","family":"Sutter","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,8,12]]},"reference":[{"issue":"4","key":"3881_CR1","doi-asserted-by":"publisher","first-page":"35","DOI":"10.36076\/ppj.2009\/12\/35","volume":"12","author":"L Manchikanti","year":"2009","unstructured":"Manchikanti L, Singh V, Datta S, Cohen SP, Hirsch JA, American Society of Interventional Pain P. 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