journal
MENU ▼
Read by QxMD icon Read
search

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

journal
https://www.readbyqxmd.com/read/28670170/re-should-we-use-a-monopolar-or-bipolar-mode-for-performing-no-touch-radiofrequency-ablation-of-liver-tumors-clinical-practice-might-have-already-resolved-the-matter-once-and-for-all
#1
Olivier Seror, Olivier Sutter
No abstract text is available yet for this article.
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670169/ct-quantification-of-lungs-and-airways-in-normal-korean-subjects
#2
Song Soo Kim, Gong Yong Jin, Yuan Zhe Li, Jeong Eun Lee, Hye Soo Shin
OBJECTIVE: To measure and compare the quantitative parameters of the lungs and airways in Korean never-smokers and current or former smokers ("ever-smokers"). MATERIALS AND METHODS: Never-smokers (n = 119) and ever-smokers (n = 45) who had normal spirometry and visually normal chest computed tomography (CT) results were retrospectively enrolled in this study. For quantitative CT analyses, the low attenuation area (LAA) of LAAI-950, LAAE-856, CT attenuation value at the 15th percentile, mean lung attenuation (MLA), bronchial wall thickness of inner perimeter of a 10 mm diameter airway (Pi10), total lung capacity (TLCCT), and functional residual capacity (FRCCT) were calculated based on inspiratory and expiratory CT images...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670168/value-of-repeat-brain-mri-in-children-with-focal-epilepsy-and-negative-findings-on-initial-mri
#3
Tae Yeon Jeon, Ji Hye Kim, Jeehun Lee, So-Young Yoo, Sook Min Hwang, Munhyang Lee
OBJECTIVE: To evaluate the value of repeat brain magnetic resonance imaging (MRI) in identifying potential epileptogenic lesions in children with initial MRI-negative focal epilepsy. MATERIALS AND METHODS: Our Institutional Review Board approved this retrospective study and waived the requirement for informed consent. During a 15-year period, 257 children (148 boys and 109 girls) with initial MRI-negative focal epilepsy were included. After re-evaluating both initial and repeat MRIs, positive results at repeat MRI were classified into potential epileptogenic lesions (malformation of cortical development and hippocampal sclerosis) and other abnormalities...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670167/radiation-dose-reduction-without-compromise-to-image-quality-by-alterations-of-filtration-and-focal-spot-size-in-cerebral-angiography
#4
Dong Joon Kim, Min Keun Park, Da Eun Jung, Jung Han Kang, Byung Moon Kim
OBJECTIVE: Different angiographic protocols may influence the radiation dose and image quality. In this study, we aimed to investigate the effects of filtration and focal spot size on radiation dose and image quality for diagnostic cerebral angiography using an in-vitro model and in-vivo patient groups. MATERIALS AND METHODS: Radiation dose and image quality were analyzed by varying the filtration and focal spot size on digital subtraction angiography exposure protocols (1, inherent filtration + large focus; 2, inherent + small; 3, copper + large; 4, copper + small)...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670166/splenial-lesions-of-the-corpus-callosum-disease-spectrum-and-mri-findings
#5
Sung Eun Park, Dae Seob Choi, Hwa Seon Shin, Hye Jin Baek, Ho Cheol Choi, Ji Eun Kim, Hye Young Choi, Mi Jung Park
The corpus callosum (CC) is the largest white matter structure in the brain, consisting of more than 200-250 million axons that provide a large connection mainly between homologous cerebral cortical areas in mirror image sites. The posterior end of the CC is the thickest part, which is called the splenium. Various diseases including congenital to acquired lesions including congenital anomalies, traumatic lesions, ischemic diseases, tumors, metabolic, toxic, degenerative, and demyelinating diseases, can involve the splenium of the CC and their clinical symptoms and signs are also variable...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670165/efficacy-of-maximum-intensity-projection-of-contrast-enhanced-3d-turbo-spin-echo-imaging-with-improved-motion-sensitized-driven-equilibrium-preparation-in-the-detection-of-brain-metastases
#6
Yun Jung Bae, Byung Se Choi, Kyung Mi Lee, Yeon Hong Yoon, Leonard Sunwoo, Cheolkyu Jung, Jae Hyoung Kim
OBJECTIVE: To evaluate the diagnostic benefits of 5-mm maximum intensity projection of improved motion-sensitized driven-equilibrium prepared contrast-enhanced 3D T1-weighted turbo-spin echo imaging (MIP iMSDE-TSE) in the detection of brain metastases. The imaging technique was compared with 1-mm images of iMSDE-TSE (non-MIP iMSDE-TSE), 1-mm contrast-enhanced 3D T1-weighted gradient-echo imaging (non-MIP 3D-GRE), and 5-mm MIP 3D-GRE. MATERIALS AND METHODS: From October 2014 to July 2015, 30 patients with 460 enhancing brain metastases (size > 3 mm, n = 150; size ≤ 3 mm, n = 310) were scanned with non-MIP iMSDE-TSE and non-MIP 3D-GRE...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670164/texture-analysis-of-torn-rotator-cuff-on-preoperative-magnetic-resonance-arthrography-as-a-predictor-of-postoperative-tendon-status
#7
Yeonah Kang, Guen Young Lee, Joon Woo Lee, Eugene Lee, Bohyoung Kim, Su Jin Kim, Joong Mo Ahn, Heung Sik Kang
OBJECTIVE: To evaluate texture data of the torn supraspinatus tendon (SST) on preoperative T2-weighted magnetic resonance arthrography (MRA) using the gray-level co-occurrence matrix (GLCM) for prediction of post-operative tendon state. MATERIALS AND METHODS: Fifty patients who underwent arthroscopic rotator cuff repair for full-thickness tears of the SST were included in this retrospective study. Based on 1-year follow-up, magnetic resonance imaging showed that 30 patients had intact SSTs, and 20 had rotator cuff retears...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670163/t2-mapping-from-multi-echo-dixon-sequence-on-gadoxetic-acid-enhanced-magnetic-resonance-imaging-for-the-hepatic-fat-quantification-can-it-be-used-for-hepatic-function-assessment
#8
Hyunsuk Yoo, Jeong Min Lee, Jeong Hee Yoon, Hyo-Jin Kang, Sang Min Lee, Hyun Kyung Yang, Joon Koo Han
OBJECTIVE: To evaluate the diagnostic value of T2(*) mapping using 3D multi-echo Dixon gradient echo acquisition on gadoxetic acid-enhanced liver magnetic resonance imaging (MRI) as a tool to evaluate hepatic function. MATERIALS AND METHODS: This retrospective study was approved by the IRB and the requirement of informed consent was waived. 242 patients who underwent liver MRIs, including 3D multi-echo Dixon fast gradient-recalled echo (GRE) sequence at 3T, before and after administration of gadoxetic acid, were included...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670162/the-blood-oxygenation-t2-values-of-resectable-esophageal-squamous-cell-carcinomas-as-measured-by-3t-magnetic-resonance-imaging-association-with-tumor-stage
#9
Yu-Lian Tang, Xiao-Ming Zhang, Zhi-Gang Yang, Yu-Cheng Huang, Tian-Wu Chen, Yan-Li Chen, Fan Chen, Nan-Lin Zeng, Rui Li, Jiani Hu
OBJECTIVE: To explore the association between the blood oxygenation T2(*) values of resectable esophageal squamous cell carcinomas (ESCCs) and tumor stages. MATERIALS AND METHODS: This study included 48 ESCC patients and 20 healthy participants who had undergone esophageal T2(*)-weighted imaging to obtain T2(*) values of the tumors and normal esophagi. ESCC patients underwent surgical resections less than one week after imaging. Statistical analyses were performed to identify the association between T2(*) values of ESCCs and tumor stages...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670161/left-ventricular-functional-parameters-and-geometric-patterns-in-korean-adults-on-coronary-ct-angiography-with-a-320-detector-row-ct-scanner
#10
Eun-Ju Kang, Ki-Nam Lee, Won Jin Choi, Young-Dae Kim, Kyung Min Shin, Jae-Kwang Lim, Jongmin Lee
OBJECTIVE: To assess the normal reference values of left ventricle (LV) functional parameters in Korean adults on coronary CT angiography (CCTA) with a 320-detector-row CT scanner, and to analyze sex-related differences and correlations with various clinical characteristics. MATERIALS AND METHODS: This study retrospectively enrolled 172 subjects (107 men and 65 women; age, 58 ± 10.9 years; body surface area [BSA], 1.75 ± 0.2 m(2)) who underwent CCTA without any prior history of cardiac disease...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670160/assessment-of-myocardial-bridge-by-cardiac-ct-intracoronary-transluminal-attenuation-gradient-derived-from-diastolic-phase-predicts-systolic-compression
#11
Mengmeng Yu, Yang Zhang, Yuehua Li, Minghua Li, Wenbin Li, Jiayin Zhang
OBJECTIVE: To study the predictive value of transluminal attenuation gradient (TAG) derived from diastolic phase of coronary computed tomography angiography (CCTA) for identifying systolic compression of myocardial bridge (MB). MATERIALS AND METHODS: Consecutive patients diagnosed with MB based on CCTA findings and without obstructive coronary artery disease were retrospectively enrolled. In total, 143 patients with 144 MBs were included in the study. Patients were classified into three groups: without systolic compression, with systolic compression < 50%, and with systolic compression ≥ 50%...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670159/predictive-value-of-cardiac-magnetic-resonance-imaging-derived-myocardial-strain-for-poor-outcomes-in-patients-with-acute-myocarditis
#12
Ji Won Lee, Yeon Joo Jeong, Geewon Lee, Nam Kyung Lee, Hye Won Lee, Jin You Kim, Bum-Sung Choi, Ki Seok Choo
OBJECTIVE: To evaluate the utility of cardiovascular magnetic resonance (CMR)-derived myocardial strain measurement for the prediction of poor outcomes in patients with acute myocarditis. MATERIALS AND METHODS: We retrospectively analyzed data from 37 patients with acute myocarditis who underwent CMR. Left ventricular (LV) size, LV mass index, ejection fraction and presence of myocardial late gadolinium enhancement (LGE) were analyzed. LV circumferential strain (EccSAX), radial strain (ErrSAX) from mid-ventricular level short-axis cine views and LV longitudinal strain (EllLV), radial strain (ErrLax) measurements from 2-chamber long-axis views were obtained...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670158/estimation-of-diastolic-filling-pressure-with-cardiac-ct-in-comparison-with-echocardiography-using-tissue-doppler-imaging-determination-of-optimal-ct-reconstruction-parameters
#13
Ji-Sun Hwang, Heon Lee, Bora Lee, Soo-Jeong Lee, Sung Shick Jou, Hyun Kyung Lim, Jon Suh
OBJECTIVE: To determine the optimal CT image reconstruction parameters for the measurement of early transmitral peak velocity (E), early peak mitral septal tissue velocity (E'), and E / E'. MATERIALS AND METHODS: Forty-six patients underwent simultaneous cardiac CT and echocardiography on the same day. Four CT datasets were reconstructed with a slice thickness/interval of 0.9/0.9 mm or 3/3 mm at 10 (10% RR-interval) or 20 (5% RR-interval) RR-intervals. The E was calculated by dividing the peak transmitral flow (mL/s) by the corresponding mitral valve area (cm(2))...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670157/analysis-of-participant-factors-that-affect-the-diagnostic-performance-of-screening-mammography-a-report-of-the-alliance-for-breast-cancer-screening-in-korea
#14
Young Joong Kim, Eun Hye Lee, Jae Kwan Jun, Dong-Rock Shin, Young Mi Park, Hye-Won Kim, Youme Kim, Keum Won Kim, Hyo Soon Lim, Jeong Seon Park, Hye Jung Kim, Hye-Mi Jo
OBJECTIVE: To analyze participant factors that affect the diagnostic performance of screening mammography. MATERIALS AND METHODS: We enrolled 128756 cases from 10 hospitals between 2005 and 2010. We analyzed recall rate, cancer detection rate (CDR) per 1000 examinations, positive predictive value (PPV), sensitivity, specificity, false positive rate (FPR), and interval cancer rate (ICR) per 1000 negative examinations according to participant factors including age, breast density, and number of visit to the same institution, and adjusted for confounding variables...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670156/thyroid-radiofrequency-ablation-updates-on-innovative-devices-and-techniques
#15
REVIEW
Hye Sun Park, Jung Hwan Baek, Auh Whan Park, Sae Rom Chung, Young Jun Choi, Jeong Hyun Lee
Radiofrequency ablation (RFA) is a well-known, effective, and safe method for treating benign thyroid nodules and recurrent thyroid cancers. Thyroid-dedicated devices and basic techniques for thyroid RFA were introduced by the Korean Society of Thyroid Radiology (KSThR) in 2012. Thyroid RFA has now been adopted worldwide, with subsequent advances in devices and techniques. To optimize the treatment efficacy and patient safety, understanding the basic and advanced RFA techniques and selecting the optimal treatment strategy are critical...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670155/ruptured-corpus-luteal-cyst-prediction-of-clinical-outcomes-with-ct
#16
Myoung Seok Lee, Min Hoan Moon, Hyunsik Woo, Chang Kyu Sung, Hye Won Jeon, Taek Sang Lee
OBJECTIVE: To evaluate the determinant pretreatment CT findings that can predict surgical intervention for patients suffering from corpus luteal cyst rupture with hemoperitoneum. MATERIALS AND METHODS: From January 2009 to December 2014, a total of 106 female patients (mean age, 26.1 years; range, 17-44 years) who visited the emergency room of our institute for acute abdominal pain and were subsequently diagnosed with ruptured corpus luteal cyst with hemoperitoneum were included in the retrospective study...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670154/multiparametric-mri-in-the-detection-of-clinically-significant-prostate-cancer
#17
REVIEW
Jurgen J Fütterer
Prostate cancer is the most common cancer among men aged 50 years and older in developed countries and the third leading cause of cancer-related death in men. Multiparametric prostate MR imaging is currently the most accurate imaging modality to detect, localize, and stage prostate cancer. The role of multi-parametric MR imaging in the detection of clinically significant prostate cancer are discussed. In addition, insights are provided in imaging techniques, protocol, and interpretation.
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670153/influence-of-b1-inhomogeneity-on-pharmacokinetic-modeling-of-dynamic-contrast-enhanced-mri-a-simulation-study
#18
Bumwoo Park, Byung Se Choi, Yu Sub Sung, Dong-Cheol Woo, Woo Hyun Shim, Kyung Won Kim, Yoon Seok Choi, Sang Joon Pae, Ji-Yeon Suh, Hyungjoon Cho, Jeong Kon Kim
OBJECTIVE: To simulate the B1-inhomogeneity-induced variation of pharmacokinetic parameters on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). MATERIALS AND METHODS: B1-inhomogeneity-induced flip angle (FA) variation was estimated in a phantom study. Monte Carlo simulation was performed to assess the FA-deviation-induced measurement error of the pre-contrast R1, contrast-enhancement ratio, Gd-concentration, and two-compartment pharmacokinetic parameters (K(trans), ve, and vp)...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670152/deep-learning-in-medical-imaging-general-overview
#19
REVIEW
June-Goo Lee, Sanghoon Jun, Young-Won Cho, Hyunna Lee, Guk Bae Kim, Joon Beom Seo, Namkug Kim
The artificial neural network (ANN)-a machine learning technique inspired by the human neuronal synapse system-was introduced in the 1950s. However, the ANN was previously limited in its ability to solve actual problems, due to the vanishing gradient and overfitting problems with training of deep architecture, lack of computing power, and primarily the absence of sufficient data to train the computer system. Interest in this concept has lately resurfaced, due to the availability of big data, enhanced computing power with the current graphics processing units, and novel algorithms to train the deep neural network...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28670151/dual-energy-ct-new-horizon-in-medical-imaging
#20
REVIEW
Hyun Woo Goo, Jin Mo Goo
Dual-energy CT has remained underutilized over the past decade probably due to a cumbersome workflow issue and current technical limitations. Clinical radiologists should be made aware of the potential clinical benefits of dual-energy CT over single-energy CT. To accomplish this aim, the basic principle, current acquisition methods with advantages and disadvantages, and various material-specific imaging methods as clinical applications of dual-energy CT should be addressed in detail. Current dual-energy CT acquisition methods include dual tubes with or without beam filtration, rapid voltage switching, dual-layer detector, split filter technique, and sequential scanning...
July 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
journal
journal
35065
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"