Korean Journal of Radiology最新文献

{"title":"Safety and Efficacy of Venous Coil-Embolization of Type IIa Pelvic Arteriovenous Malformations.","authors":"Lyo Min Kwon, Sang Yub Lee, Young Soo Do, Kwang Bo Park, Jun Gon Kim, Shin-Seok Yang, Dong-Ik Kim","doi":"10.3348/kjr.2024.0977","DOIUrl":"10.3348/kjr.2024.0977","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the safety and efficacy of coil embolization of venous segments in patients with Type IIa pelvic arteriovenous malformations (AVMs).</p><p><strong>Materials and methods: </strong>A retrospective study was performed on 13 patients (median age, 43 years, range 20-62 years, 7 males) who underwent transvenous coil embolization for Type IIa pelvic AVM (characterized by multiple arterioles shunting to focal venous segments of a single draining vein) without the use of additional liquid embolic agents from March 2017 to February 2023. Treatment outcomes were analyzed based on clinical evaluations, post angiography findings, and follow-up CT.</p><p><strong>Results: </strong>Fourteen procedures were performed on 13 patients. Except in one patient, all treatments were completed in a single session. Transvenous access was employed in 10 procedures, whereas direct puncture was used in four sessions. The embolization procedures used an average of 55.7 ± 58.5 coils (range, 7-238) and lasted an average of 127.3 ± 39.5 minutes. The technical success rate was 92.9% (of 13/14). All patients reported symptom improvement. Follow-up CT scans showed complete occlusion of the AVM without recurrence in ten of the 13 patients. There was one minor adverse event: a small retroperitoneal hemorrhage, likely related to direct puncture, which resolved spontaneously. No other adverse events were observed.</p><p><strong>Conclusion: </strong>Coil embolization of the draining vein segment, without the use of additional liquid embolic agents is a safe and effective method for managing Type IIa pelvic AVM.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"239-245"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865896/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postgraduate Training Program for MD Radiology in Sri Lanka: An Overview.","authors":"Harsha Dissanayake","doi":"10.3348/kjr.2024.1269","DOIUrl":"10.3348/kjr.2024.1269","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"207-209"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865898/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endoscopic Ultrasound-Guided Fine-Needle Aspiration for Pancreatic Cysts >2.5 cm Without Worrisome Features or High-Risk Stigmata.","authors":"Anthony Benjamín Ayala Inga","doi":"10.3348/kjr.2024.1301","DOIUrl":"10.3348/kjr.2024.1301","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"281-282"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865905/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovation and Optimization of Contrast Media Administration in Computed Tomography.","authors":"Damiano Caruso","doi":"10.3348/kjr.2024.1159","DOIUrl":"10.3348/kjr.2024.1159","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"210-212"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnosing Complete Response to Preoperative Chemoradiation in Esophageal Cancer Using Dynamic Contrast-Enhanced MRI Response Criteria.","authors":"Yura Ahn, Jooae Choe, Hyun Joo Lee, Sook Ryun Park, Jong-Hoon Kim, Ho June Song, Min-Ju Kim, Yong-Hee Kim","doi":"10.3348/kjr.2024.0896","DOIUrl":"10.3348/kjr.2024.0896","url":null,"abstract":"<p><strong>Objective: </strong>To assess the performance of novel qualitative diagnostic criteria using dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI) to identify the pathologic complete response (pCR) of primary tumors in esophageal cancer after neoadjuvant chemoradiation (nCRT).</p><p><strong>Materials and methods: </strong>Patients who underwent nCRT, subsequent MRI, positron emission tomography/computed tomography (PET/CT), endoscopy, or esophagectomy for esophageal cancer between October 2021 and October 2023 were retrospectively analyzed. The DCE-MRI response of primary tumors was interpreted using five grades by thoracic radiologists as follows: G1 (compatible with CR), G2 (probable CR), G3 (probable partial response [PR]), G4 (compatible with PR), and G5 (stable or progressive disease). The performances of MRI, PET/CT, endoscopy, and their combinations in diagnosing pCR in primary tumors were calculated.</p><p><strong>Results: </strong>A total of 52 patients (male:female, 46:6; age, 61.2 ± 8.0 years) were included. Surgical specimens revealed pCR (ypT0) in 34 patients. G1 as the MRI criterion for pCR of primary tumors yielded a positive predictive value (PPV), specificity of 100% (18/18), and low sensitivity (23.5% [8/34]). Combining G1 and G2 as the MRI criteria increased the sensitivity to 73.5% (25/34), with a specificity of 88.9% (16/18), accuracy of 78.8% (41/52), and PPV of 92.6% (25/27). Adding the DCE-MRI results (G1-2) significantly improved accuracy for both PET/CT (from 65.4% [34/52] to 80.8% [42/52], <i>P</i> = 0.03) and endoscopy (from 55.8% [29/52] to 76.9% [40/52], <i>P</i> = 0.005), with increase in sensitivity (from 55.9% [19/34] to 82.4% [28/34] for PET/CT-based evaluation [<i>P</i> = 0.008] and from 47.1% [16/34] to 82.4% [28/34] for endoscopy-based evaluation [<i>P</i> = 0.001]).</p><p><strong>Conclusion: </strong>DCE-MRI-based grading shows high diagnostic performance for identifying pCR in primary tumors, particularly in terms of PPV and specificity, and enhances response evaluation when combined with PET/CT and endoscopy.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"269-280"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865900/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of Digital Mammography-Based Artificial Intelligence Computer-Aided Diagnosis on Synthetic Mammography From Digital Breast Tomosynthesis.","authors":"Kyung Eun Lee, Sung Eun Song, Kyu Ran Cho, Min Sun Bae, Bo Kyoung Seo, Soo-Yeon Kim, Ok Hee Woo","doi":"10.3348/kjr.2024.0664","DOIUrl":"10.3348/kjr.2024.0664","url":null,"abstract":"<p><strong>Objective: </strong>To test the performance of an artificial intelligence-based computer-aided diagnosis (AI-CAD) designed for full-field digital mammography (FFDM) when applied to synthetic mammography (SM).</p><p><strong>Materials and methods: </strong>We analyzed 501 women (mean age, 57 ± 11 years) who underwent preoperative mammography and breast cancer surgery. This cohort consisted of 1002 breasts, comprising 517 with cancer and 485 without. All patients underwent digital breast tomosynthesis (DBT) and FFDM during the preoperative workup. The SM is routinely reconstructed using DBT. Commercial AI-CAD (Lunit Insight MMG, version 1.1.7.2) was retrospectively applied to SM and FFDM to calculate the abnormality scores for each breast. The median abnormality scores were compared for the 517 breasts with cancer using the Wilcoxon signed-rank test. Calibration curves of abnormality scores were evaluated. The discrimination performance was analyzed using the area under the receiver operating characteristic curve (AUC), sensitivity, and specificity using a 10% preset threshold. Sensitivity and specificity were further analyzed according to the mammographic and pathological characteristics. The results of SM and FFDM were compared.</p><p><strong>Results: </strong>AI-CAD demonstrated a significantly lower median abnormality score (71% vs. 96%, <i>P</i> < 0.001) and poorer calibration performance for SM than for FFDM. SM exhibited lower sensitivity (76.2% vs. 82.8%, <i>P</i> < 0.001), higher specificity (95.5% vs. 91.8%, <i>P</i> < 0.001), and comparable AUC (0.86 vs. 0.87, <i>P</i> = 0.127) than FFDM. SM showed lower sensitivity than FFDM in asymptomatic breasts, dense breasts, ductal carcinoma in situ, T1, N0, and hormone receptor-positive/human epidermal growth factor receptor 2-negative cancers but showed higher specificity in non-cancerous dense breasts.</p><p><strong>Conclusion: </strong>AI-CAD showed lower abnormality scores and reduced calibration performance for SM than for FFDM. Furthermore, the 10% preset threshold resulted in different discrimination performances for the SM. Given these limitations, off-label application of the current AI-CAD to SM should be avoided.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"217-229"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865904/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Training of Radiology Residents in Taiwan.","authors":"Shu Huei Shen, Hong Jen Chiou","doi":"10.3348/kjr.2024.1253","DOIUrl":"10.3348/kjr.2024.1253","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"205-206"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865895/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Radiologist's Guide to IDH-Wildtype Glioblastoma for Efficient Communication With Clinicians: Part I-Essential Information on Preoperative and Immediate Postoperative Imaging.","authors":"Philipp Vollmuth, Philipp Karschnia, Felix Sahm, Yae Won Park, Sung Soo Ahn, Rajan Jain","doi":"10.3348/kjr.2024.0982","DOIUrl":"10.3348/kjr.2024.0982","url":null,"abstract":"<p><p>The paradigm of isocitrate dehydrogenase (IDH)-wildtype glioblastoma is rapidly evolving, reflecting clinical, pathological, and imaging advancements. Thus, it remains challenging for radiologists, even those who are dedicated to neuro-oncology imaging, to keep pace with this rapidly progressing field and provide useful and updated information to clinicians. Based on current knowledge, radiologists can play a significant role in managing patients with IDH-wildtype glioblastoma by providing accurate preoperative diagnosis as well as preoperative and postoperative treatment planning including accurate delineation of the residual tumor. Through active communication with clinicians, extending far beyond the confines of the radiology reading room, radiologists can impact clinical decision making. This Part 1 review provides an overview about the neuropathological diagnosis of glioblastoma to understand the past, present, and upcoming revisions of the World Health Organization classification. The imaging findings that are noteworthy for radiologists while communicating with clinicians on preoperative and immediate postoperative imaging of IDH-wildtype glioblastomas will be summarized.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"246-268"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865903/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Response to \"Endoscopic Ultrasound-Guided Fine-Needle Aspiration for Pancreatic Cysts >2.5 cm Without Worrisome Features or High-Risk Stigmata\".","authors":"Jeong Hee Yoon, In Rae Cho, Sang Hyub Lee, Jeong Min Lee","doi":"10.3348/kjr.2025.0056","DOIUrl":"10.3348/kjr.2025.0056","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"283-285"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865902/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Announcement of New Gastrointestinal Section Editor.","authors":"Seong Ho Park","doi":"10.3348/kjr.2025.0096","DOIUrl":"10.3348/kjr.2025.0096","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"216"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865899/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}