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Korean Journal of Radiology: Official Journal of the Korean Radiological Society

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https://www.readbyqxmd.com/read/29521383/erratum-application-of-deconvolution-algorithm-of-point-spread-function-in-improving-image-quality-an-observer-preference-study-on-chest-radiography
#1
Kum Ju Chae, Jin Mo Goo, Su Yeon Ahn, Jin Young Yoo, Soon Ho Yoon
[This corrects the article on p. 147 in vol. 19, PMID: 29354011.].
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520196/re-multi-parameter-cmr-approach-in-acute-myocarditis-to-improve-diagnosis-and-prognostic-stratification
#2
COMMENT
Fausto Pizzino, Antonino Recupero, Pietro Pugliatti, Stefano Maffei, Gianluca Di Bella
No abstract text is available yet for this article.
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520195/a-whole-tumor-histogram-analysis-of-apparent-diffusion-coefficient-maps-for-differentiating-thymic-carcinoma-from-lymphoma
#3
Wei Zhang, Yue Zhou, Xiao-Quan Xu, Ling-Yan Kong, Hai Xu, Tong-Fu Yu, Hai-Bin Shi, Qing Feng
Objective: To assess the performance of a whole-tumor histogram analysis of apparent diffusion coefficient (ADC) maps in differentiating thymic carcinoma from lymphoma, and compare it with that of a commonly used hot-spot region-of-interest (ROI)-based ADC measurement. Materials and Methods: Diffusion weighted imaging data of 15 patients with thymic carcinoma and 13 patients with lymphoma were retrospectively collected and processed with a mono-exponential model...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520194/incidence-of-breakthrough-reaction-in-patients-with-prior-acute-allergic-like-reactions-to-iodinated-contrast-media-according-to-the-administration-route
#4
Yeon Soo Kim, Young Hun Choi, Yeon Jin Cho, Seunghyun Lee, Soon Ho Yoon, Chang Min Park, Hye Ryun Kang
Objective: This study assessed the risk of acute allergic-like reactions (AARs) after extravascular administration of iodinated contrast media (ICM) in at-risk patients compared with that after intravascular ICM administration. Materials and Methods: From July 2012 to January 2016, 264 patients with a history of moderate or severe reactions to ICM, with re-exposure to ICM intravascularly or extravascularly were included. The incidence of recurrent AARs after ICM re-exposure were assessed according to the administration routes by reviewing electronic medical records and comparison between the two routes...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520193/diagnostic-value-of-volume-based-fluorine-18-fluorodeoxyglucose-pet-ct-parameters-for-characterizing-thyroid-incidentaloma
#5
Huazheng Shi, Zuguo Yuan, Zheng Yuan, Chunshan Yang, Jian Zhang, Yi Shou, Wenrui Zhang, Zhaofu Ping, Xin Gao, Shiyuan Liu
Objective: To assess clinical value of fluorine-18-fluorodeoxyglucose positron emission tomography/computed tomography (PET/CT) for differentiation of malignant from benign focal thyroid incidentaloma. Materials and Methods: This retrospective study included 99 patients with focal thyroid incidentaloma of 5216 non-thyroid cancer patients that had undergone PET/CT. PET/CT semi-quantitative parameters, volume-based functional parameters, metabolic tumor volume (MTV), and total lesion glycolysis (TLG) of thyroid incidentaloma were assessed...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520192/endovascular-treatment-of-bilateral-cavernous-sinus-dural-arteriovenous-fistula-therapeutic-strategy-and-follow-up-outcomes
#6
Jong Kook Rhim, Young Dae Cho, Dong Hyun Yoo, Hyun-Seung Kang, Won-Sang Cho, Jeong Eun Kim, Min Jae Cho, Gyojun Hwang, O-Ki Kwon, Moon Hee Han
Objective: Bilateral cavernous sinus dural arteriovenous fistula (CSdAVF) is very rare, even in Asian countries. The research intended to present clinical and radiologic outcomes of treating such fistulas through endovascular embolization. Materials and Methods: Data was obtained from 220 consecutive patients, with CSdAVF, who were treated from January 2004 to December 2015. Bilateral CSdAVF was identified in 17 patients (7.7%). The clinical and radiologic outcomes of the fistulas were assessed with an emphasis on the technical aspects of treatment...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520191/early-changes-in-apparent-diffusion-coefficient-for-salivary-glands-during-radiotherapy-for-nasopharyngeal-carcinoma-associated-with-xerostomia
#7
Qing Zhang, Yu-Mei Wei, Yuan-Gang Qi, Bao-Sheng Li
Objective: To evaluate the early changes in the apparent diffusion coefficient (ADC) of the salivary glands during radiotherapy (RT) and their association with the degree of xerostomia at 6 months after RT in patients with nasopharyngeal carcinoma (NPC). Materials and Methods: We enrolled 26 patients with NPC who underwent RT. Each patient underwent diffusion-weighted MRI of the salivary glands at rest and with gustatory stimulation within 1 week before RT and 2 weeks after the beginning of RT...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520190/evaluation-of-the-subscapularis-tendon-tears-on-3t-magnetic-resonance-arthrography-comparison-of-diagnostic-performance-of-t1-weighted-spectral-presaturation-with-inversion-recovery-and-t2-weighted-turbo-spin-echo-sequences
#8
Hoseok Lee, Joong Mo Ahn, Yusuhn Kang, Joo Han Oh, Eugene Lee, Joon Woo Lee, Heung Sik Kang
Objective: To compare the T1-weighted spectral presaturation with inversion-recovery sequences (T1 SPIR) with T2-weighted turbo spin-echo sequences (T2 TSE) on 3T magnetic resonance arthrography (MRA) in the evaluation of the subscapularis (SSC) tendon tear with arthroscopic findings as the reference standard. Materials and Methods: This retrospective study included 120 consecutive patients who had undergone MRA within 3 months between April and December 2015. Two musculoskeletal radiologists blinded to the arthroscopic results evaluated T1 SPIR and T2 TSE images in separate sessions for the integrity of the SSC tendon, examining normal/articular-surface partial-thickness tear (PTTa)/full-thickness tear (FTT)...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520189/clinical-feasibility-of-synthetic-magnetic-resonance-imaging-in-the-diagnosis-of-internal-derangements-of-the-knee
#9
Jisook Yi, Young Han Lee, Ho-Taek Song, Jin-Suck Suh
Objective: To evaluate the feasibility of synthetic magnetic resonance imaging (MRI) compared to conventional MRI for the diagnosis of internal derangements of the knee at 3T. Materials and Methods: Following Institutional Review Board approval, image sets of conventional and synthetic MRI in 39 patients were included. Two musculoskeletal radiologists compared the image sets and qualitatively analyzed the images. Subjective image quality was assessed using a four-grade scale...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520188/the-incidence-of-various-types-of-systemic-reactions-related-to-epidural-steroid-injections-a-prospective-observational-study
#10
Guen Young Lee, Joon Woo Lee, Jin S Yeom, Ki-Jeong Kim, Hyung-Ik Shin, Heung Sik Kang
Objective: To evaluate the incidence, types and association of systemic reactions after an epidural steroid injection (ESI) with patient demographics, ESI factors and repeated occurrence of an ESI. Materials and Methods: This prospective observational study was approved by the Institutional Review Board of our hospital, and written informed consent was obtained from all the participants. From October to December 2011, systemic reactions at 2 weeks after 960 ESIs among 885 patients were measured...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520187/the-correlation-between-the-injury-patterns-of-the-medial-patellofemoral-ligament-in-an-acute-first-time-lateral-patellar-dislocation-on-mr-imaging-and-the-incidence-of-a-second-time-lateral-patellar-dislocation
#11
Guang-Ying Zhang, Hong-Xia Zhu, En-Miao Li, Hao Shi, Wei Liu, Lei Zheng, Zheng-Wu Bai, Hong-Yu Ding
Objective: To evaluate the correlation between the injury patterns of the medial patellofemoral ligament (MPFL) on magnetic resonance imaging in an acute first-time lateral patellar dislocation (LPD) and incidence of a second-time LPD. Materials and Methods: Magnetic resonance images were prospectively analyzed in 147 patients after an acute first-time LPD with identical nonoperative management. The injury patterns of MPFL in acute first-time LPDs were grouped by location and severity for the analysis of the incidence of second-time LPD in a 5-year follow-up...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520186/prediction-of-late-postoperative-hemorrhage-after-whipple-procedure-using-computed-tomography-performed-during-early-postoperative-period
#12
Ga Jin Han, Suk Kim, Nam Kyung Lee, Chang Won Kim, Hyeong Il Seo, Hyun Sung Kim, Tae Un Kim
Objective: Postpancreatectomy hemorrhage (PPH) is an uncommon but serious complication of Whipple surgery. To evaluate the radiologic features associated with late PPH at the first postoperative follow up CT, before bleeding. Materials and Methods: To evaluate the radiological features associated with late PPH at the first follow-up CT, two radiologists retrospectively reviewed the initial postoperative follow-up CT images of 151 patients, who had undergone Whipple surgery...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520185/multimodality-imaging-in-patients-with-secondary-hypertension-with-a-focus-on-appropriate-imaging-approaches-depending-on-the-etiologies
#13
Hyungwoo Ahn, Eun Ju Chun, Hak Jong Lee, Sung Il Hwang, Dong-Ju Choi, In-Ho Chae, Kyung Won Lee
Although the causes of hypertension are usually unknown, about 10% of the cases occur secondary to specific etiologies, which are often treatable. Common categories of secondary hypertension include renal parenchymal disease, renovascular stenosis, vascular and endocrinologic disorders. For diseases involving the renal parenchyma and adrenal glands, ultrasonography (US), computed tomography (CT) or magnetic resonance (MR) imaging is recommended. For renovascular stenosis and vascular disorders, Doppler US, conventional or noninvasive (CT or MR) angiography is an appropriate modality...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520184/effect-of-patient-characteristics-on-vessel-enhancement-at-lower-extremity-ct-angiography
#14
Takanori Masuda, Takeshi Nakaura, Yoshinori Funama, Tomoyasu Sato, Toru Higaki, Masao Kiguchi, Yukari Yamashita, Naoyuki Imada, Kazuo Awai
Objective: To evaluate the effect of patient characteristics on popliteal aortic contrast enhancement at lower extremity CT angiography (LE-CTA) scanning. Materials and Methods: Prior informed consent to participate was obtained from all 158 patients. All were examined using a routine protocol; the scanning parameters were tube voltage 100 kVp, tube current 100 mA to 770 mA (noise index 12), 0.5-second rotation, 1.25-mm detector row width, 0.516 beam pitch, and 41...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520183/natural-history-of-untreated-coronary-total-occlusions-revealed-with-follow-up-semi-automated-quantitative-coronary-ct-angiography-the-morphological-characteristics-of-initial-ct-predict-occlusion-shortening
#15
Qian Wu, Mengmeng Yu, Yuehua Li, Wenbin Li, Zhigang Lu, Meng Wei, Jing Yan, Jiayin Zhang
Objective: To investigate the morphological changes of coronary chronic total occlusion (CTO) as determined by coronary computed tomography angiography (CCTA) follow-up using semi-automated quantitative analysis. Materials and Methods: Thirty patients with 31 CTO lesions confirmed by invasive coronary angiography and baseline/follow-up CCTA were retrospectively included. CTOs were quantitatively analyzed by a semi-automated coronary plaque analysis software (Coronary Plaque Analysis, version 2...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520182/self-gated-late-gadolinium-enhancement-at-7t-to-image-rats-with-reperfused-acute-myocardial-infarction
#16
Lei Wang, Yushu Chen, Bing Zhang, Wei Chen, Chunhua Wang, Li Song, Ziqian Xu, Jie Zheng, Fabao Gao
Objective: A failed electrocardiography (ECG)-trigger often leads to a long acquisition time (TA) and deterioration in image quality. The purpose of this study was to evaluate and optimize the technique of self-gated (SG) cardiovascular magnetic resonance (CMR) for cardiac late gadolinium enhancement (LGE) imaging of rats with myocardial infarction/reperfusion. Materials and Methods: Cardiovascular magnetic resonance images of 10 rats were obtained using SG-LGE or ECG with respiration double-gating (ECG-RESP-gating) method at 7T to compare differences in image interference and TA between the two methods...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520181/comparison-of-the-efficacy-and-prognostic-factors-of-transarterial-chemoembolization-plus-microwave-ablation-versus-transarterial-chemoembolization-alone-in-patients-with-a-large-solitary-or-multinodular-hepatocellular-carcinomas
#17
Lin Zheng, Hai-Liang Li, Chen-Yang Guo, Su-Xia Luo
Objective: To evaluate the efficacy and prognostic factors associated with transcatheter arterial chemoembolization (TACE) combined with microwave ablation (MWA) versus TACE alone for a large solitary or multinodular hepatocellular carcinomas (HCCs). Materials and Methods: This retrospective study involved 258 patients with a large solitary or multinodular HCCs (not more than 10 tumors) who underwent TACE + MWA (n = 92) or TACE alone (n = 166) between July 2011 and April 2015...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520180/double-stent-system-with-long-duodenal-extension-for-palliative-treatment-of-malignant-extrahepatic-biliary-obstructions-a-prospective-study
#18
Dong Il Gwon, Gi-Young Ko, Jong Woo Kim, Heung Kyu Ko, Hyun-Ki Yoon, Kyu-Bo Sung
Objective: To investigate the technical safety and clinical efficacy of a double-stent system with long duodenal extension in patients with malignant extrahepatic biliary obstruction. Materials and Methods: This prospective study enrolled 48 consecutive patients (31 men, 17 women; mean age, 61 years; age range, 31-77 years) with malignant extrahepatic biliary obstructions from May 2013 to December 2015. All patients were treated with a double-stent system with long duodenal covered extension (16 cm or 21 cm)...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520179/plug-assisted-retrograde-transvenous-obliteration-for-the-treatment-of-gastric-varices-the-role-of-intra-procedural-cone-beam-computed-tomography
#19
Dong Il Gwon, Gi-Young Ko, Young Baek Kwon, Hyun-Ki Yoon, Kyu-Bo Sung
Objective: To investigate the technical and clinical outcomes of plug-assisted retrograde transvenous obliteration (PARTO) for the treatment of gastric varices (GV) and to evaluate the role of intra-procedural cone-beam computed tomography (CBCT) performed during PARTO to confirm its technical success. Materials and Methods: From January 2016 to December 2016, 17 patients with GV who had undergone PARTO were retrospectively evaluated. When the proximal part of the afferent vein was identified on a fluoroscopy, non-contrast CBCT images were obtained...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/29520178/imaging-evaluation-following-90-y-radioembolization-of-liver-tumors-what-radiologists-should-know
#20
REVIEW
Ijin Joo, Hyo-Cheol Kim, Gyoung Min Kim, Jin Chul Paeng
Radioembolization using beta-emitting yttrium-90 microspheres is being increasingly used for the treatment of primary and metastatic liver cancers. It is a form of intra-arterial brachytherapy which delivers intense radiation to liver tumors with little embolic effect; this mode of action results in unique post-treatment imaging findings. It is important to understand these imaging findings to avoid misinterpretation of tumor response and to determine further management of the disease. Herein, we discuss the current concepts for assessing tumor response, common post-treatment imaging features, and associated complications following radioembolization...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
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