Korean Journal of Radiology最新文献

{"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}

{"title":"Clinical and Radiological Outcomes of Transarterial Embolization for Adhesive Capsulitis.","authors":"Keng-Wei Liang, Hsuan Yin Lin, Kai-Lan Hsu, Fa-Chuan Kuan, Chia-Yu Gean, Chien-Kuo Wang, Wei-Ren Su, Bow Wang","doi":"10.3348/kjr.2024.0883","DOIUrl":"10.3348/kjr.2024.0883","url":null,"abstract":"<p><strong>Objective: </strong>To assess the effect of transarterial embolization (TAE) for adhesive capsulitis (AC) by evaluating clinical outcomes and changes in inflammation using magnetic resonance imaging (MRI).</p><p><strong>Materials and methods: </strong>Patients who had undergone TAE between August 2020 and August 2023 for AC refractory to conservative treatments without any invasive procedures for more than 3 months, and had undergone baseline and 3-month post-AC follow-up contrast-enhanced MRI evaluations, were included. A suspension mixture of 500 mg imipenem/cilastatin in 10 mL of iodinated contrast agent was used for TAE. MRI results were analyzed to assess periarticular capsule/ligament inflammation. Clinical assessments included pain scores using the numeric rating scale (NRS) and functional scores using the quick disabilities of the arm, shoulder, and hand (Quick DASH) questionnaire.</p><p><strong>Results: </strong>Twenty-five patients (female:male, 14:11; age, 54.9 ± 7.1 years) were included. Significant reductions in average NRS pain scores as well as improvements in Quick DASH scores and range of motion, including anterior flexion and abduction, were observed at 1, 3, and 6 months after TAE (all <i>P</i> < 0.001). MRI analyses revealed that TAE significantly decreased the grades of axillary recess capsule enhancement, rotator interval (RI) capsule T2 signal intensity, and RI capsule enhancement (all <i>P</i> ≤ 0.004).</p><p><strong>Conclusion: </strong>TAE may be an effective and safe therapeutic approach for AC refractory to conservative treatments, alleviating pain and supporting functional recovery. The observed MRI findings suggest that the effectiveness of TAE for AC may be attributed to the reduction of inflammation and the elimination of angiogenesis.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 3","pages":"230-238"},"PeriodicalIF":4.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11865901/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502036","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 Thailand.","authors":"Tawika Kaewchur, Juntima Euathrongchit, Wiwatana Tanomkiat","doi":"10.3348/kjr.2024.1097","DOIUrl":"10.3348/kjr.2024.1097","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"97-98"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080520","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":"Establishing Normative Values for Entire Spinal Cord Morphometrics in East Asian Young Adults.","authors":"Bio Joo, Hyung Jun Park, Mina Park, Sang Hyun Suh, Sung Jun Ahn","doi":"10.3348/kjr.2024.0907","DOIUrl":"10.3348/kjr.2024.0907","url":null,"abstract":"<p><strong>Objective: </strong>The quantitative assessment of spinal cord volume is still in the early stages of development. Recently, normative morphometric values of the cervical spinal cord have been reported. This study aimed to establish normative values for spinal cord morphometry, extending beyond the cervical region to include the thoracic and lumbar spinal cord, and to examine the influence of sex and ethnicity on these measurements.</p><p><strong>Materials and methods: </strong>This prospective study included 28 young, healthy, East Asian volunteers (14 males and 14 females; mean age, 30.14 ± 4.07 years) who underwent spinal cord MRI using a 3T scanner. The cross-sectional areas (CSAs), anteroposterior (AP) and transverse diameters, and compression ratios of the entire spinal cord were calculated. Additionally, the effects of sex and ethnicity on spinal cord volumetry were evaluated, with the influence of ethnicity assessed by comparing the findings with a Caucasian dataset from the PAM50 study.</p><p><strong>Results: </strong>The CSAs demonstrated two enlargements at the cervical and lumbar levels. The cervical enlargement at C4-5 exhibited an elliptical shape, while the lumbar enlargement at T12 appeared more circular. The CSAs and AP and transverse diameters of the spinal cords in males were significantly larger than that of females (<i>P</i> < 0.001). The spinal cord compression ratios in East Asians were significantly lower than those in Caucasians (<i>P</i> < 0.001).</p><p><strong>Conclusion: </strong>This study revealed that the two spinal cord enlargements exhibit different patterns and suggest significant differences in spinal cord morphometric values according to sex and ethnicity.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"146-155"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794285/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080349","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":"Evaluation of Image Quality and Scan Time Efficiency in Accelerated 3D T1-Weighted Pediatric Brain MRI Using Deep Learning-Based Reconstruction.","authors":"Hyunsuk Yoo, Hee Eun Moon, Soojin Kim, Da Hee Kim, Young Hun Choi, Jeong-Eun Cheon, Joon Sung Lee, Seunghyun Lee","doi":"10.3348/kjr.2024.0701","DOIUrl":"10.3348/kjr.2024.0701","url":null,"abstract":"<p><strong>Objective: </strong>This study evaluated the effect of an accelerated three-dimensional (3D) T1-weighted pediatric brain MRI protocol using a deep learning (DL)-based reconstruction algorithm on scan time and image quality.</p><p><strong>Materials and methods: </strong>This retrospective study included 46 pediatric patients who underwent conventional and accelerated, pre- and post-contrast, 3D T1-weighted brain MRI using a 3T scanner (SIGNA Premier; GE HealthCare) at a single tertiary referral center between March 1, 2023, and April 30, 2023. Conventional scans were reconstructed using intensity Filter A (Conv), whereas accelerated scans were reconstructed using intensity Filter A (Fast_A) and a DL-based algorithm (Fast_DL). Image quality was assessed quantitatively based on the coefficient of variation, relative contrast, apparent signal-to-noise ratio (aSNR), and apparent contrast-to-noise ratio (aCNR) and qualitatively according to radiologists' ratings of overall image quality, artifacts, noisiness, gray-white matter differentiation, and lesion conspicuity.</p><p><strong>Results: </strong>The acquisition times for the pre- and post-contrast scans were 191 and 135 seconds, respectively, for the conventional scan. With the accelerated protocol, these were reduced to 135 and 80 seconds, achieving time reductions of 29.3% and 40.7%, respectively. DL-based reconstruction significantly reduced the coefficient of variation, improved the aSNR, aCNR, and overall image quality, and reduced the number of artifacts compared with the conventional acquisition method (all <i>P</i> < 0.05). However, the lesion conspicuity remained similar between the two protocols.</p><p><strong>Conclusion: </strong>Utilizing a DL-based reconstruction algorithm in accelerated 3D T1-weighted pediatric brain MRI can significantly shorten the acquisition time, enhance image quality, and reduce artifacts, making it a viable option for pediatric imaging.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"180-192"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794287/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080363","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":"Imaging Findings of Complications of New Anticancer Drugs.","authors":"Ji Sung Jang, Hyo Jung Park, Chong Hyun Suh, Sang Eun Won, Eun Seong Lee, Nari Kim, Do-Wan Lee, Kyung Won Kim","doi":"10.3348/kjr.2024.0195","DOIUrl":"10.3348/kjr.2024.0195","url":null,"abstract":"<p><p>The anticancer drugs have evolved significantly, spanning molecular targeted therapeutics (MTTs), immune checkpoint inhibitors (ICIs), chimeric antigen receptor T-cell (CAR-T) therapy, and antibody-drug conjugates (ADCs). Complications associated with these drugs vary widely based on their mechanisms of action. MTTs that target angiogenesis can often lead to complications related to ischemia or endothelial damage across various organs, whereas non-anti-angiogenic MTTs present unique complications derived from their specific pharmacological actions. ICIs are predominantly associated with immune-related adverse events, such as pneumonitis, colitis, hepatitis, thyroid disorders, hypophysitis, and sarcoid-like reactions. CAR-T therapy causes unique and severe complications including cytokine release syndrome and immune effector cell-associated neurotoxicity syndrome. ADCs tend to cause complications associated with cytotoxic payloads. A comprehensive understanding of these drug-specific toxicities, particularly using medical imaging, is essential for providing optimal patient care. Based on this knowledge, radiologists can play a pivotal role in multidisciplinary teams. Therefore, radiologists must stay up-to-date on the imaging characteristics of these complications and the mechanisms underlying novel anticancer drugs.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"156-168"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794286/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080364","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 Hong Kong Special Administrative Region.","authors":"Stephen Kwok, Yiu Chung Wong","doi":"10.3348/kjr.2024.1058","DOIUrl":"10.3348/kjr.2024.1058","url":null,"abstract":"","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"99-101"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794289/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080513","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":"Radiofrequency Ablation of Benign Thyroid Nodules: 10-Year Follow-Up Results From a Single Center.","authors":"Jae Ho Shin, Minkook Seo, Min Kyoung Lee, So Lyung Jung","doi":"10.3348/kjr.2024.0599","DOIUrl":"10.3348/kjr.2024.0599","url":null,"abstract":"<p><strong>Objective: </strong>The long-term efficacy of radiofrequency ablation (RFA) for the treatment of benign thyroid nodules remains unclear. We aimed to evaluate the long-term efficacy, emphasizing single-session RFA, and identify the factors associated with cases requiring additional RFA sessions to achieve a comparable volume reduction rates (VRR).</p><p><strong>Materials and methods: </strong>We retrospectively evaluated benign thyroid nodules treated with RFA between 2008 and 2018. Treatment efficacy at the 5- and 10-year follow-ups was analyzed. Additionally, subgroup analysis comparing technique efficacy, such as the final VRR, between the single- and multi-session RFA groups was performed. Continuous variables were analyzed using the two-sample t-test or Mann-Whitney U test, and categorical variables were analyzed using the Chi-square or Fisher's exact test.</p><p><strong>Results: </strong>A total of 267 nodules from 237 patients (age: 46.3 ± 15.0 years; female: 210/237 [88.6%]) were included. Of these, 60 were analyzed for the 5-year follow-up (mean follow-up duration ± standard deviation: 5.8 ± 0.4 years) and 29 for the 10-year follow-up (10.9 ± 0.9 years). Single-session RFA showed a median VRR of 95.7% (5th year) and 98.8% (10th year), while multi-session RFA showed comparable median VRRs of 97.4% (5th year) and 96.9% (10th year). The vascularity type, demographic factors, nodular components, and locations did not significantly differ between the single-session and multi-session RFA groups. However, nodules with pre-RFA volume <10 mL were more prevalent in the single-session RFA group than in the multi-session RFA group (5th year: 64.3% [18/28] vs. 34.4% [11/32], <i>P</i> = 0.040; 10th year: 75.0% [12/16] vs. 23.1% [3/13], <i>P</i> = 0.016).</p><p><strong>Conclusion: </strong>Single-session RFA may be sufficient for achieving adequate volume reduction during long-term follow-up for small-volume benign thyroid nodules. A high VRR was maintained regardless of the nodular component, location, demographic factors, or vascularity type. However, large-volume nodules may require multiple RFA sessions to achieve a comparable VRR.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"193-203"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794290/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080428","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":"Interpretation, Reporting, Imaging-Based Workups, and Surveillance of Incidentally Detected Gallbladder Polyps and Gallbladder Wall Thickening: 2025 Recommendations From the Korean Society of Abdominal Radiology.","authors":"Won Chang, Sunyoung Lee, Yeun-Yoon Kim, Jin Young Park, Sun Kyung Jeon, Jeong Eun Lee, Jeongin Yoo, Seungchul Han, So Hyun Park, Jae Hyun Kim, Hyo Jung Park, Jeong Hee Yoon","doi":"10.3348/kjr.2024.0914","DOIUrl":"10.3348/kjr.2024.0914","url":null,"abstract":"<p><p>Incidentally detected gallbladder polyps (GBPs) and gallbladder wall thickening (GBWT) are frequently encountered in clinical practice. However, characterizing GBPs and GBWT in asymptomatic patients can be challenging and may result in overtreatment, including unnecessary follow-ups or surgeries. The Korean Society of Abdominal Radiology (KSAR) Clinical Practice Guideline Committee has developed expert recommendations that focus on standardized imaging interpretation and follow-up strategies for both GBPs and GBWT, with support from the Korean Society of Radiology and KSAR. These guidelines, which address 24 key questions, aim to standardize the approach for the interpretation of imaging findings, reporting, imaging-based workups, and surveillance of incidentally detected GBPs and GBWT. This recommendation promotes evidence-based practice, facilitates communication between radiologists and referring physicians, and reduces unnecessary interventions.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"102-134"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794292/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080386","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":"Erratum: Changing Gadolinium-Based Contrast Agents to Prevent Recurrent Acute Adverse Drug Reactions: 6-Year Cohort Study Using Propensity Score Matching.","authors":"Min Woo Han, Chong Hyun Suh, Pyeong Hwa Kim, Seonok Kim, Ah Young Kim, Kyung-Hyun Do, Jeong Hyun Lee, Dong-Il Gwon, Ah Young Jung, Choong Wook Lee","doi":"10.3348/kjr.2025.0061","DOIUrl":"10.3348/kjr.2025.0061","url":null,"abstract":"<p><p>This corrects the article on p. 824 in vol. 25, PMID: 39197827.</p>","PeriodicalId":17881,"journal":{"name":"Korean Journal of Radiology","volume":"26 2","pages":"204"},"PeriodicalIF":4.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11794293/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080345","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}