Abstract:
OBJECTIVE:To evaluate the influence of papillary muscles and trabeculae on left ventricular (LV) cardiovascular magnetic resonance (CMR) analysis using three methods of cavity delineation (classic or modified inclusion methods, and the exclusion method) in patients with hypertrophic cardiomyopathy (HCM). MATERIALS AND METHODS:This retrospective study included 20 consecutive HCM patients who underwent 1.5-T CMR imaging with short-axis cine stacks of the entire LV. LV measurements were performed using three different methods of manual cavity delineation of the endocardial and epicardial contours: method A, presumed endocardial boundary as seen on short-axis cine images; method B, including solely the cavity and closely adjacent trabeculae; or method C, excluding papillary muscles and trabeculae. Ascending aorta forward flow was measured as reference for LV-stroke volume (SV). Interobserver reproducibility was assessed using intraclass correlation coefficients. RESULTS:Method A showed larger end-diastole and end-systole volumes (largest percentage differences of 25% and 68%, respectively, p < 0.05), compared with method C. The ejection fraction was 55.7 ± 6.9% for method A, 68.6 ± 8.4% for B, and 71.7 ± 7.0% for C (p < 0.001). Mean mass was also significantly different: 164.6 ± 47.4 g for A, 176.5 ± 50.5 g for B, and 199.6 ± 53.2 g for C (p < 0.001). LV-SV error was largest with method B (p < 0.001). No difference in interobserver agreement was observed (p > 0.05). CONCLUSION:In HCM patients, LV measurements are strikingly different dependent on whether papillary muscles and trabeculae are included or excluded. Therefore, a consistent method of LV cavity delineation may be crucial during longitudinal follow-up to avoid misinterpretation and erroneous clinical decision-making.
journal_name
Korean J Radioljournal_title
Korean journal of radiologyauthors
Park EA,Lee W,Kim HK,Chung JWdoi
10.3348/kjr.2015.16.1.4subject
Has Abstractpub_date
2015-01-01 00:00:00pages
4-12issue
1eissn
1229-6929issn
2005-8330journal_volume
16pub_type
杂志文章abstract:OBJECTIVE:To determine the predictive factors for treatment responsiveness in patients with chronic obstructive pulmonary disease (COPD) at 1-year follow-up by performing quantitative analyses of baseline CT scans. MATERIALS AND METHODS:COPD patients (n = 226; 212 men, 14 women) were recruited from the Korean Obstruct...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.0204
更新日期:2019-02-01 00:00:00
abstract::[This corrects the article on p. 878 in vol. 15, PMID: 25469103.]. ...
journal_title:Korean journal of radiology
pub_type: 已发布勘误
doi:10.3348/kjr.2015.16.1.217
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate a novel radiofrequency ablation (RFA) application utilizing an adjustable electrode for treatment of benign thyroid nodules. MATERIALS AND METHODS:From April 2011 to December 2018, 21 patients underwent RFA treatment on 21 thyroid nodules, utilizing an 18-gauge inter...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2019.0724
更新日期:2020-03-01 00:00:00
abstract:OBJECTIVE:To test the feasibility of non-contrast magnetic resonance imaging (MRI) in a sequential imaging study for characterizing computed tomography (CT)-detected arterial-enhancing nodules that do not washout in patients at risk of hepatocellular carcinoma (HCC). MATERIALS AND METHODS:In this retrospective study, ...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2019.0447
更新日期:2020-03-01 00:00:00
abstract::The Korean Society of Urogenital Radiology (KSUR) aimed to present a consensus statement for patient preparation, standard technique, and pain management in relation to transrectal ultrasound-guided prostate biopsy (TRUS-Bx) to reduce the variability in TRUS-Bx methodologies and suggest a nationwide guideline. The KSU...
journal_title:Korean journal of radiology
pub_type: 杂志文章,实务指引,评审
doi:10.3348/kjr.2019.0576
更新日期:2020-04-01 00:00:00
abstract::Recent advances in computer technology have generated a new area of research known as radiomics. Radiomics is defined as the high throughput extraction and analysis of quantitative features from imaging data. Radiomic features provide information on the gray-scale patterns, inter-pixel relationships, as well as shape ...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2019.0855
更新日期:2020-07-01 00:00:00
abstract::Breast metastasis from nonmammary malignant neoplasms is uncommon, and it accounts for approximately 2% of all breast tumors. Distant metastasis of thymoma is very rare, and especially to extrathorcic areas. We report a female who had a metastatic thymoma in her breast 20 years after undergoing resection for a non-inv...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2008.9.1.80
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:To determine whether the size of a perfusion defect seen at myocardial perfusion MR imaging represents the extent of irreversibly damaged myocardium in acute reperfused myocardial infarction. MATERIALS AND METHODS:In nine cats, reperfused myocardial infarction was induced by occlusion of the left anterior de...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2002.3.4.235
更新日期:2002-10-01 00:00:00
abstract:OBJECTIVE:We wanted to evaluate the impact of two reconstruction algorithms (halfscan and multisector) on the image quality and the accuracy of measuring the severity of coronary stenoses by using a pulsating cardiac phantom with different heart rates (HRs). MATERIALS AND METHODS:Simulated coronary arteries with diffe...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2009.10.3.227
更新日期:2009-05-01 00:00:00
abstract:OBJECTIVE:To compare the objective and subjective image quality indicators and radiation doses of computed tomography (CT) venography performed using model-based iterative reconstruction (MBIR) at 80 kVp and adaptive statistical iterative reconstruction (ASIR)-V at 70 kVp. MATERIALS AND METHODS:Eighty-three patients w...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.0897
更新日期:2019-07-01 00:00:00
abstract:OBJECTIVE:To demonstrate the usefulness of 3-tesla (3T) magnetic resonance imaging (MRI) including T2-weighted imaging (T2WI), diffusion weighted imaging (DWI), time-of-flight (TOF) magnetic resonance angiography (MRA), T2*-weighted gradient recalled echo (GRE), and susceptibility weighted imaging (SWI) in diagnosing b...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2012.13.5.541
更新日期:2012-09-01 00:00:00
abstract:OBJECTIVE:To compare the effect of radio frequency ablation (RFA) on the dimensions of radio frequency coagulation necrosis in a rabbit lung using a wet electrode in monopolar mode with that in dual electrode bipolar mode at different infusion rates (15 mm/hr versus 30 ml/hr) and saline concentrations (0.9% normal vers...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2006.7.2.97
更新日期:2006-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the interobserver agreement, diagnostic value, and associated clinical factors of automated breast ultrasound (ABUS) coronal features in differentiating breast lesions. MATERIALS AND METHODS:This study enrolled 457 pathologically confirmed lesions in 387 female (age, 46.4 ± 10.3 years), including...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2019.0525
更新日期:2020-05-01 00:00:00
abstract::Advances in imaging-based management of acute ischemic stroke now provide crucial information such as infarct core, ischemic penumbra/degree of collaterals, vessel occlusion, and thrombus that helps in the selection of the best candidates for reperfusion therapy. It also predicts thrombolytic efficacy and benefit or p...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2015.16.2.372
更新日期:2015-03-01 00:00:00
abstract:OBJECTIVE:To evaluate the three-phase helical CT features of early hepatocellular carcinomas, based on the new Japanese classification. MATERIALS AND METHODS:Over the course of an eight-year period, we collected 16 pathologically proven early hepatocellular carcinomas from 16 patients having undergone a three-phase he...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2008.9.4.325
更新日期:2008-07-01 00:00:00
abstract::Primary lymphoma of the uterus is a rare disease, the reported characteristic MR imaging findings being homogeneous intermediate signal intensity of the indistinct mass on T1- and T2-weighted images, and the preservation of endometrial lining and uterine architecture. We report a case of primary uterine lymphoma which...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2000.1.4.223
更新日期:2000-10-01 00:00:00
abstract:Objective:To evaluate the effectiveness, safety, and feasibility of intraoperative radiofrequency ablation (IORFA) under ultrasound guidance for the treatment of liver metastases from gastrointestinal stromal tumors (GISTs). Materials and Methods:From August 2009 to February 2017, 24 patients with liver metastases of ...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.19.1.54
更新日期:2018-01-01 00:00:00
abstract::Stenosis of the pancreatico-enteric anastomosis is one of the major complications of pancreaticoduodenectomy (PD). Endoscopic stent placement, has limited success rate as a nonsurgical treatment due to altered gastrointestinal anatomy. Percutaneous treatment is rarely attempted due to the technical difficulty in acces...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2016.17.5.797
更新日期:2016-09-01 00:00:00
abstract::Chondrosarcomas are malignant tumors of cartilage that rarely involve the sinonasal region, and myxoid chondrosarcoma is a rare histologic variant of chondrosarcoma that usually occurs in the soft tissue of extremities. Although several case reports and results of small series of chondrosarcomas in the sinonasal regio...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2007.8.5.452
更新日期:2007-09-01 00:00:00
abstract:OBJECTIVE:To compare the efficacy of Mangafodipir trisodium (Mn-DPDP)-enhanced MR cholangiogrphy (MRC) and Gadobenate dimeglumine (Gd-BOPTA)-enhanced MRC in visualizing a non-dilated biliary system. MATERIALS AND METHODS:Eighty-eight healthy liver donor candidates underwent contrast-enhanced T1-weighted MRC. Mn-DPDP a...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2005.6.4.229
更新日期:2005-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the incidence and risk factors of infections associated with implantable venous access ports (IVAPs). MATERIALS AND METHODS:From August 2003 through November 2011, 1747 IVAPs were placed in our interventional radiology suite. One hundred forty four IVAPs were insert...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2014.15.4.494
更新日期:2014-07-01 00:00:00
abstract::As the detection and characterization of lung nodules are of paramount importance in thoracic radiology, various tools for making a computer-aided diagnosis (CAD) have been developed to improve the diagnostic performance of radiologists in clinical practice. Numerous studies over the years have shown that the CAD syst...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2011.12.2.145
更新日期:2011-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to compare the clinical outcomes of the cervical interlaminar epidural steroid injection (CIESI) for unilateral radiculopathy by the midline or paramedian approaches and to determine the prognostic factors of CIESI. MATERIALS AND METHODS:We retrospectively analyzed 182 patient...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2015.16.3.604
更新日期:2015-05-01 00:00:00
abstract::The diagnostic and prognostic potential of an onco-metabolite, 2-hydroxyglutarate (2HG) as a proton magnetic resonance spectroscopy (1H-MRS) detectable biomarker of the isocitrate dehydrogenase (IDH)-mutated (IDH-MT) gliomas has drawn attention of neuroradiologists recently. However, due to severe spectral overlap wit...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2016.17.5.620
更新日期:2016-09-01 00:00:00
abstract::A 63-year-old man was found in the street after overrun by a car. Postmortem CT revealed multiple bone fractures, but surprisingly all without any relevant hemorrhage which would have been expected under such circumstances. A round radiopaque formation was found in the duodenum, which was reminiscent of ingested table...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2014.15.2.205
更新日期:2014-03-01 00:00:00
abstract::In keeping with the increasing utilization of CT examinations, the greater concern about radiation hazards from examinations has been addressed. In this regard, CT radiation dose optimization has been given a great deal of attention by radiologists, referring physicians, technologists, and physicists. Dose-saving stra...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2012.13.1.1
更新日期:2012-01-01 00:00:00
abstract: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 with...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2017.18.4.655
更新日期:2017-07-01 00:00:00
abstract::Degenerating nodules (DNs), which primarily manifest as benign thyroid nodules, are one of the main causes of discordance in ultrasonography (US) and cytological assessments. Intranodular hemorrhage is one of the mechanisms contributing to discordant nodules, and an impaired blood supply may explain further DN shrinka...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2018.0599
更新日期:2019-06-01 00:00:00
abstract:OBJECTIVE:To evaluate the correlations between prostate volumes estimated by transabdominal, transrectal, and three-dimensional US and the factors affecting the differences. MATERIALS AND METHODS:The prostate volumes of 94 consecutive patients were measured by both transabdominal and transrectal US. Next, the prostate...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2008.9.2.134
更新日期:2008-03-01 00:00:00
abstract::Pericardial fat necrosis is an infrequent cause of acute chest pain and this can mimic acute myocardial infarction and acute pericarditis. We describe here a patient with the magnetic resonance imaging (MRI) findings of pericardial fat necrosis and this was correlated with the computed tomography (CT) findings. The MR...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2011.12.3.390
更新日期:2011-05-01 00:00:00