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

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https://read.qxmd.com/read/30799585/erratum-analysis-of-complications-of-percutaneous-transthoracic-needle-biopsy-using-ct-guidance-modalities-in-a-multicenter-cohort-of-10568-biopsies
#1
Soon Ho Yoon, Chang Min Park, Kyung Hee Lee, Kun Young Lim, Young Joo Suh, Dong Jin Im, Jin Hur, Dae Hee Han, Mi Jin Kang, Ji Yung Choo, Cherry Kim, Jung Im Kim, Hyunsook Hong
This corrects the article on p. 323 in vol. 20, PMID: 30672172.
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799584/association-of-chest-ct-based-quantitative-measures-of-muscle-and-fat-with-post-lung-transplant-survival-and-morbidity-a-single-institutional-retrospective-cohort-study-in-korean-population
#2
Young Hoon Cho, Kyung Hyun Do, Eun Jin Chae, Se Hoon Choi, Kyung Wook Jo, Sang Oh Lee, Sang Bum Hong
OBJECTIVE: Abnormal body composition is an important modifiable risk factor in lung transplantation. Therefore, precise quantification of different body components, including muscle and fat, may play an important role in optimizing outcomes in lung transplant patients. The purpose of the study was to investigate the prognostic significance of muscle and subcutaneous fat mass measured on chest CT with regard to lung transplantation survival and other post-transplant outcomes. MATERIALS AND METHODS: The study population included 45 consecutive adult lung transplant recipients (mean age of 47...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799583/solitary-nodular-invasive-mucinous-adenocarcinoma-of-the-lung-imaging-diagnosis-using-the-morphologic-metabolic-dissociation-sign
#3
Min Jae Cha, Kyung Soo Lee, Tae Jung Kim, Hyun Su Kim, Tae Sung Kim, Myung Jin Chung, Byung Tae Kim, Yang Soo Kim
OBJECTIVE: To evaluate the efficacy of the morphologic-metabolic (M-M) dissociation sign based on computed tomography (CT) and fluorine-18-fluorodeoxyglucose positron emission tomography (PET)/CT in discriminating invasive mucinous adenocarcinoma (IMA) from invasive non-mucinous adenocarcinomas (ADCs) of the lung. MATERIALS AND METHODS: The Institutional Review Board approved this retrospective study. Among surgically resected solitary pulmonary nodule (SPN)-type ADCs (< 3 cm in diameter), 35 patients with IMAs and 329 with invasive non-mucinous ADCs were included...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799582/a-newly-developed-flow-diverter-flowise-for-internal-carotid-artery-aneurysm-results-of-a-pilot-clinical-study
#4
Byung Moon Kim, Keun Young Park, Jae Whan Lee, Joonho Chung, Dong Joon Kim, Dong Ik Kim
OBJECTIVE: We report the results of a pilot clinical study that evaluated the safety and efficacy of a newly-developed, retrievable flow diverter (FloWise; Taewoong Medical) for the treatment of internal carotid artery (ICA) aneurysm. MATERIALS AND METHODS: A total of 10 patients were enrolled. Inclusion criteria were 1) unruptured aneurysm with a dome size of ≥ 8 mm and a neck size of ≥ 4 mm at the ICA, or 2) two or more unruptured aneurysms of any size able to be spanned by a single FloWise at the ICA...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799581/quantitative-analysis-of-parotid-gland-secretion-function-in-sj%C3%A3-gren-s-syndrome-patients-with-dynamic-magnetic-resonance-sialography
#5
Simin Liu, Weiwei Chen, Min Wang, Tong Wu, Lingli Dong, Chu Pan, Wenzhen Zhu
OBJECTIVE: To evaluate the secretory function of parotid glands by dynamic magnetic resonance (MR) sialography and determine the clinical performance of this technique in diagnosing and evaluating Sjögren's syndrome (SS) patients. MATERIALS AND METHODS: This study enrolled 29 healthy volunteers (25 women and 4 men; mean age, 34.8 ± 6.3 years; age range, 26-47 years) and 25 primary SS (pSS) patients (23 women and 2 men; mean age, 37.7 ± 7.9 years; age range, 25-50 years) with decreased secretory function...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799580/high-resolution-magnetic-resonance-imaging-using-compressed-sensing-for-intracranial-and-extracranial-arteries-comparison-with-conventional-parallel-imaging
#6
Chong Hyun Suh, Seung Chai Jung, Ho Beom Lee, Se Jin Cho
OBJECTIVE: To compare conventional sensitivity encoding (SENSE) to compressed sensing plus SENSE (CS) for high-resolution magnetic resonance imaging (HR-MRI) of intracranial and extracranial arteries. MATERIALS AND METHODS: HR-MRI was performed in 14 healthy volunteers. Three-dimensional T1-weighted imaging (T1WI) and proton density-weighted imaging (PD) were acquired using CS or SENSE under the same total acceleration factors (AFt )-5.5, 6.8, and 9.7 for T1WI and 3...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799579/computed-tomography-arthrography-findings-of-idiopathic-adhesive-capsulitis-of-the-hip-an-analog-of-adhesive-capsulitis-of-the-shoulder
#7
Guen Young Lee, Yong Chan Ha, Sujin Kim, Jae Yoon Kim
OBJECTIVE: To identify useful imaging findings for the diagnosis of idiopathic adhesive capsulitis of the hip (ACH) on computed tomography arthrography (CTA). MATERIALS AND METHODS: Twenty-eight consecutive patients (29 hips; 7 males; mean age, 45.7 years; age range, 17-67 years) with ACH from October 2009 to March 2017 and 29 age- and sex-matched control patients from 2014 to 2016 were enrolled. All CTA images were evaluated by 2 radiologists independently for joint distensibility (anterior-posterior [AP] and superior-inferior [SI] joint cavity filling ratios), the presence of contrast filling around the ligamentum teres, and extracapsular contrast leakage...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799578/cervical-spine-ct-using-spectral-shaping-can-it-be-a-solution-to-overcome-artifacts-in-the-lower-cervical-spinal-region
#8
Su Min Lee, Hye Jung Choo, Sun Joo Lee, Sung Kwan Kim, In Sook Lee, Dong Wook Kim, Jin Wook Baek, Young Jin Heo
OBJECTIVE: To investigate the image quality, radiation dose, and intermodality agreement of cervical spine CT using spectral shaping at 140 kVp by a tin filter (Sn140-kVp) in comparison with those of conventional CT at 120 kVp. MATERIALS AND METHODS: Patients who had undergone cervical spine CT with Sn140-kVp (n = 58) and conventional 120 kVp (n = 49) were included. Qualitative image quality was analyzed using a 5-point Likert scale. Quantitative image quality was assessed by measuring the noise and attenuation within the central spinal canals at C3/4, C6/7, and C7/T1 levels...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799577/hepatic-artery-occlusion-after-liver-transplantation-in-patients-with-doppler-ultrasound-abnormality-increasing-sensitivity-of-contrast-enhanced-ultrasound-diagnosis
#9
Jin Sil Kim, Kyoung Won Kim, Sang Hyun Choi, So Yeong Jeong, Jae Hyun Kwon, Gi Won Song, Sung Gyu Lee
OBJECTIVE: To investigate whether diagnostic performance of contrast-enhanced ultrasound (CEUS) could be improved with modified criteria to diagnose significant hepatic artery occlusion (HAO) and to determine the role of CEUS in patients with a tardus-parvus hepatic artery (HA) pattern on Doppler US. MATERIALS AND METHODS: Among 2679 adult liver transplantations performed over 7 years, HAO was suspected in 288 recipients, based on Doppler ultrasound. Among them, 130 patients underwent CEUS...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799576/evaluation-of-early-response-to-treatment-of-hepatocellular-carcinoma-with-yttrium-90-radioembolization-using-quantitative-computed-tomography-analysis
#10
Sungwon Kim, Do Young Kim, Chansik An, Kyunghwa Han, Jong Yun Won, Gyoung Min Kim, Myeong Jin Kim, Jin Young Choi
OBJECTIVE: To identify an imaging predictor for the assessment of early treatment response to yttrium-90 transarterial radioembolization (TARE) in patients with hepatocellular carcinoma (HCC), using a quantitative assessment of dynamic computed tomography (CT) images. MATERIALS AND METHODS: Dynamic contrast-enhanced CT was obtained pre- and 4 weeks post-TARE in 44 patients (34 men, 10 women; mean age, 60 years) with HCC. Computer software was developed for measuring the percentage increase in the combined delayed-enhancing area and necrotic area (pD + N) and the percentage increase in the necrotic area (pNI) in the tumor-containing segments pre- and post-TARE...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799575/high-acceleration-three-dimensional-t1-weighted-dual-echo-dixon-hepatobiliary-phase-imaging-using-compressed-sensing-sensitivity-encoding-comparison-of-image-quality-and-solid-lesion-detectability-with-the-standard-t1-weighted-sequence
#11
Ju Gang Nam, Jeong Min Lee, Sang Min Lee, Hyo Jin Kang, Eun Sun Lee, Bo Yun Hur, Jeong Hee Yoon, EunJu Kim, Mariya Doneva
OBJECTIVE: To compare a high acceleration three-dimensional (3D) T1-weighted gradient-recalled-echo (GRE) sequence using the combined compressed sensing (CS)-sensitivity encoding (SENSE) method with a conventional 3D GRE sequence using SENSE, with respect to image quality and detectability of solid focal liver lesions (FLLs) in the hepatobiliary phase (HBP) of gadoxetic acid-enhanced liver MRI. MATERIALS AND METHODS: A total of 217 patients with gadoxetic acid-enhanced liver MRI at 3T (54 in the preliminary study and 163 in the main study) were retrospectively included...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799574/mri-t2-weighted-imaging-and-fat-suppressed-t2-weighted-imaging-image-fusion-technology-improves-image-discriminability-for-the-evaluation-of-anal-fistulas
#12
Shi Ting Feng, Mengqi Huang, Zhi Dong, Ling Xu, Yin Li, Yingmei Jia, Huasong Cai, Bingqi Shen, Zi Ping Li
OBJECTIVE: To explore whether MRI fusion technology (combined T2-weighted imaging [T2WI] and fat-suppressed T2WI [T2WI-FS ]) improves signal differences between anal fistulas and surrounding structures. MATERIALS AND METHODS: A total of 32 patients with confirmed diagnoses of anal fistula were retrospectively studied. All available T2WI and T2WI-FS images for each patient were used to generate fusion image (T2WI-Fusion ) based on the addition of gray values obtained from each pixel via an MR post-processing work station...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799573/computed-tomography-arteriography-for-detecting-the-origin-of-the-inferior-pyloric-artery-in-patients-with-gastric-cancer
#13
Zhi Long Wang, Ru Lin Miao, Chao Gao, Lei Tang, Zi Yu Li, Ying Shi Sun, Jia Fu Ji
OBJECTIVE: To analyze the detection rate of the inferior pyloric artery (IPA) in patients with gastric cancer by computed tomography arteriography (CTA). MATERIALS AND METHODS: Fifty-four patients (48 males and 6 females; mean age, 59.0 ± 1.5 years) who had undergone radical gastrectomy for gastric cancer from September 2016 to July 2017 at our institution were recruited prospectively. Patients underwent abdominal contrast-enhanced CT scans and CTA imaging reconstruction before the operation...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799572/kinetic-features-of-invasive-breast-cancers-on-computer-aided-diagnosis-using-3t-mri-data-correlation-with-clinical-and-pathologic-prognostic-factors
#14
Sung Eun Song, Kyu Ran Cho, Bo Kyoung Seo, Ok Hee Woo, Seung Pil Jung, Deuk Jae Sung
OBJECTIVE: To investigate the correlation of kinetic features of breast cancers on computer-aided diagnosis (CAD) of preoperative 3T magnetic resonance imaging (MRI) data and clinical-pathologic factors in breast cancer patients. MATERIALS AND METHODS: Between July 2016 and March 2017, 85 patients (mean age, 54 years; age range, 35-81 years) with invasive breast cancers (mean, 1.8 cm; range, 0.8-4.8 cm) who had undergone MRI and surgery were retrospectively enrolled...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799571/design-characteristics-of-studies-reporting-the-performance-of-artificial-intelligence-algorithms-for-diagnostic-analysis-of-medical-images-results-from-recently-published-papers
#15
Dong Wook Kim, Hye Young Jang, Kyung Won Kim, Youngbin Shin, Seong Ho Park
OBJECTIVE: To evaluate the design characteristics of studies that evaluated the performance of artificial intelligence (AI) algorithms for the diagnostic analysis of medical images. MATERIALS AND METHODS: PubMed MEDLINE and Embase databases were searched to identify original research articles published between January 1, 2018 and August 17, 2018 that investigated the performance of AI algorithms that analyze medical images to provide diagnostic decisions. Eligible articles were evaluated to determine 1) whether the study used external validation rather than internal validation, and in case of external validation, whether the data for validation were collected, 2) with diagnostic cohort design instead of diagnostic case-control design, 3) from multiple institutions, and 4) in a prospective manner...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799570/radiation-safety-in-emergency-medicine-balancing-the-benefits-and-risks
#16
REVIEW
Raja Rizal Azman, Mohammad Nazri Md Shah, Kwan Hoong Ng
The use of computed tomography (CT) in emergency departments has increased over several decades, as physicians increasingly depend on imaging for diagnoses. Patients and medical personnel are put at risk due to frequent exposure to and higher levels of radiation, with very little evidence of improvements in outcomes. Here, we explore why CT imaging has a tendency to be overused in emergency departments and the obstacles that medical personnel face in ensuring patient safety. The solution requires cooperation from all emergency care stakeholders as well as the continuous education of doctors on how CT scans help in particular cases...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799569/comparison-of-radioembolization-and-sorafenib-for-the-treatment-of-hepatocellular-carcinoma-with-portal-vein-tumor-thrombosis-a-systematic-review-and-meta-analysis-of-safety-and-efficacy
#17
Pyeong Hwa Kim, Sang Hyun Choi, Jin Hyoung Kim, Seong Ho Park
OBJECTIVE: To compare the safety and efficacy of radioembolization with that of sorafenib for the treatment of hepatocellular carcinoma (HCC) with portal vein tumor thrombosis (PVTT). MATERIALS AND METHODS: MEDLINE, EMBASE, and Cochrane databases were searched for studies reporting outcomes in patients with HCC and PVTT treated with radioembolization or sorafenib. Meta-analyses of cumulative overall survival (OS) and Kaplan-Meier survival rates according to the time to progression (TTP) and incidence of adverse events (AEs) were performed...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799568/diagnostic-performance-of-mri-for-assessing-parametrial-invasion-in-cervical-cancer-a-head-to-head-comparison-between-oblique-and-true-axial-t2-weighted-images
#18
Sungmin Woo, Min Hoan Moon, Jeong Yeon Cho, Seung Hyup Kim, Sang Youn Kim
OBJECTIVE: To directly compare the diagnostic performance of true and oblique axial T2-weighted imaging (T2WI) for assessing parametrial invasion (PMI) in cervical cancer. MATERIALS AND METHODS: This retrospective study included 71 women with treatment-naive cervical cancer who underwent MRI that included both oblique and true axial T2WI, followed by radical hysterectomy. Two blinded radiologists (Radiologist 1 and Radiologist 2) independently assessed the presence of PMI on both sequences using a 5-point Likert scale...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799567/clinical-and-mri-characteristics-of-uterine-cervical-adenocarcinoma-its-variants-and-mimics
#19
REVIEW
Tsukasa Saida, Akiko Sakata, Yumiko Oishi Tanaka, Hiroyuki Ochi, Toshitaka Ishiguro, Masafumi Sakai, Hiroaki Takahashi, Toyomi Satoh, Manabu Minami
Adenocarcinoma currently accounts for 10-25% of all uterine cervical carcinomas and has a variety of histopathological subtypes. Among them, mucinous carcinoma gastric type is not associated with high-risk human papillomavirus (HPV) infection and a poor prognosis, while villoglandular carcinoma has an association with high-risk HPV infection and a good prognosis. They show relatively characteristic imaging findings which can be suggested by magnetic resonance imaging (MRI), though the former is sometimes difficult to be distinguished from lobular endocervical glandular hyperplasia...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://read.qxmd.com/read/30799566/utility-of-cardiac-ct-for-preoperative-evaluation-of-mitral-regurgitation-morphological-evaluation-of-mitral-valve-and-prediction-of-valve-replacement
#20
Young Joo Suh, Sak Lee, Byung Chul Chang, Chi Young Shim, Geu Ru Hong, Byoung Wook Choi, Young Jin Kim
OBJECTIVE: We aimed to investigate the diagnostic accuracy of cardiac computed tomography (CT) for the detection of mitral valve (MV) prolapse in mitral regurgitation (MR) with surgical findings as the standard reference, and to assess the predictability of MV replacement based on morphologic CT findings. MATERIALS AND METHODS: A total of 156 patients who had undergone preoperative cardiac CT and subsequently received MV surgery due to severe MR were retrospectively enrolled...
March 2019: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
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