Abstract:
OBJECTIVE:We aimed to evaluate correlations between computed tomography (CT) parameters and pulmonary function test (PFT) parameters according to disease severity in patients with chronic obstructive pulmonary disease (COPD), and to determine whether CT parameters can be used to predict PFT indices. MATERIALS AND METHODS:A total of 370 patients with COPD were grouped based on disease severity according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) I-IV criteria. Emphysema index (EI), air-trapping index, and airway parameters such as the square root of wall area of a hypothetical airway with an internal perimeter of 10 mm (Pi10) were measured using automatic segmentation software. Clinical characteristics including PFT results and quantitative CT parameters according to GOLD criteria were compared using ANOVA. The correlations between CT parameters and PFT indices, including the ratio of forced expiratory volume in one second to forced vital capacity (FEV₁/FVC) and FEV₁, were assessed. To evaluate whether CT parameters can be used to predict PFT indices, multiple linear regression analyses were performed for all patients, Group 1 (GOLD I and II), and Group 2 (GOLD III and IV). RESULTS:Pulmonary function deteriorated with increase in disease severity according to the GOLD criteria (p < 0.001). Parenchymal attenuation parameters were significantly worse in patients with higher GOLD stages (p < 0.001), and Pi10 was highest for patients with GOLD III (4.41 ± 0.94 mm). Airway parameters were nonlinearly correlated with PFT results, and Pi10 demonstrated mild correlation with FEV₁/FVC in patients with GOLD II and III (r = 0.16, p = 0.06 and r = 0.21, p = 0.04, respectively). Parenchymal attenuation parameters, airway parameters, EI, and Pi10 were identified as predictors of FEV₁/FVC for the entire study sample and for Group 1 (R² = 0.38 and 0.22, respectively; p < 0.001). However, only parenchymal attenuation parameter, EI, was identified as a predictor of FEV₁/FVC for Group 2 (R² = 0.37, p < 0.001). Similar results were obtained for FEV₁. CONCLUSION:Airway and parenchymal attenuation parameters are independent predictors of pulmonary function in patients with mild COPD, whereas parenchymal attenuation parameters are dominant independent predictors of pulmonary function in patients with severe COPD.
journal_name
Korean J Radioljournal_title
Korean journal of radiologyauthors
Koo HJ,Lee SM,Seo JB,Lee SM,Kim N,Oh SY,Lee JS,Oh YMdoi
10.3348/kjr.2018.0391subject
Has Abstractpub_date
2019-04-01 00:00:00pages
683-692issue
4eissn
1229-6929issn
2005-8330pii
20.683journal_volume
20pub_type
杂志文章abstract:Objective:To assess clinical feasibility of low-attenuation cluster analysis in evaluation of chronic obstructive pulmonary disease (COPD). Materials and Methods:Subjects were 199 current and former cigarette smokers that underwent CT for quantification of COPD and had physiological measurements. Quantitative CT (QCT)...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.19.1.139
更新日期:2018-01-01 00:00:00
abstract::A tumoral pseudoangiomatous stromal hyperplasia (PASH) that causes huge breast enlargement is very rare. Only two cases of huge tumoral PASHs have been reported in the English medical literature. We report here on a surgically confirmed case of bilateral huge tumoral PASH in a 47-year-old woman, and we present the ima...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2010.11.3.355
更新日期:2010-05-01 00:00:00
abstract::Over the last few years, percutaneous radiofrequency (RF) ablation has been successfully established as a viable treatment modality for small peripheral renal cell carcinoma (RCC). This technique is limited by central tumor location and tumor size. We report the interventional management of a 5.3 cm mixed RCC with cen...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2009.10.5.523
更新日期:2009-09-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the effects of localized brain cooling on blood-brain barrier (BBB) permeability following transient middle cerebral artery occlusion (tMCAO) in rats, by using dynamic contrast-enhanced (DCE)-MRI. MATERIALS AND METHODS:Thirty rats were divided into 3 groups of 10 rat...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2016.17.5.715
更新日期:2016-09-01 00:00:00
abstract:OBJECTIVE:The objective of this retrospective study was to develop and validate a simple diagnostic prediction model by using ultrasound (US) features of thyroid nodules obtained from multicenter retrospective data. MATERIALS AND METHODS:Patient data were collected from 20 different institutions and the data included ...
journal_title:Korean journal of radiology
pub_type: 杂志文章,多中心研究
doi:10.3348/kjr.2013.14.1.110
更新日期:2013-01-01 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::Diabetes mellitus (DM) can accompany many musculoskeletal (MSK) diseases. It is difficult to distinguish the DM-related MSK diseases based on clinical symptoms alone. Sonography is frequently used as a first imaging study for these MSK symptoms and is helpful to differentiate the various DM-related MSK diseases. This ...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2016.17.2.245
更新日期:2016-03-01 00:00:00
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...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2015.16.1.4
更新日期:2015-01-01 00:00:00
abstract::Thyroid ultrasonography (US) plays a key role in the diagnosis and management of thyroid-related diseases. The aim of this article was to illustrate various pitfalls that can occur in utilizing thyroid US and techniques to prevent them. In this article, we present cases demonstrating the common pitfalls associated wit...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2014.15.2.267
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVE:The aim of this work was to determine the radiation dose received by infants from radiographic exposure and the contribution from scatter radiation due to radiographic exposure of other infants in the same room. MATERIALS AND METHODS:We retrospectively evaluated the entrance skin doses (ESDs) and effective d...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2008.9.5.416
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:To investigate the diagnostic performance of contrast-enhanced ultrasound (CEUS) and its role as a second-line imaging modality after gadoxetate-enhanced MRI (Gd-EOB-MRI) in the diagnosis of hepatocellular carcinoma (HCC) among at risk observations. MATERIALS AND METHODS:We prospectively enrolled participant...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2020.0973
更新日期:2020-11-03 00:00:00
abstract::Imaging features of metastases to the urinary system may closely mimic primary urinary tract tumors, and differential diagnosis by imaging alone may be problematic or even impossible in some cases. The main purpose of this article was to familiarize radiologists with imaging findings of metastasis to the urinary syste...
journal_title:Korean journal of radiology
pub_type: 杂志文章,评审
doi:10.3348/kjr.2018.19.4.742
更新日期:2018-07-01 00:00:00
abstract:OBJECTIVE:We have used diffusion tensor tractography (DTT) for the evaluation of the somatotopic organization of corticospinal tracts (CSTs) in the posterior limb of the internal capsule (PLIC) and cerebral peduncle (CP). MATERIALS AND METHODS:We imaged the brains of nine healthy right-handed subjects. We used a spin-...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2008.9.3.191
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to examine the feasibility of perfusion imaging of the brain using the Z-score and subtraction dynamic images obtained from susceptibility contrast MR images. MATERIALS AND METHODS:Five patients, each with a normal MRI, Moya-moya, a middle cerebral artery occlusion, post-trauma synd...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2004.5.3.143
更新日期:2004-07-01 00:00:00
abstract:OBJECTIVE:To describe radiologic findings of adenovirus pneumonia and to understand clinico-radiological features associated with progression to acute respiratory distress syndrome (ARDS) in patients with adenovirus pneumonia. MATERIALS AND METHODS:This study included 19 patients diagnosed with adenovirus pneumonia at...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2016.17.6.940
更新日期:2016-11-01 00:00:00
abstract:OBJECTIVE:To investigate the image quality (IQ) and apparent diffusion coefficient (ADC) of reduced field-of-view (FOV) di-ffusion-weighted imaging (DWI) of pancreas in comparison with full FOV DWI. MATERIALS AND METHODS:In this retrospective study, 2 readers independently performed qualitative analysis of full FOV DW...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2015.16.6.1216
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVE:To evaluate the inter-group differences in growth and the pathological results of nodular ground-glass opacities (GGOs) according to their size and focal solid portions. MATERIALS AND METHODS:Ninety-six nodular GGOs in 55 individuals followed by CT for at least one month from an initial chest CT were include...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2007.8.1.22
更新日期:2007-01-01 00:00:00
abstract:Objective:To evaluate the current status of managing adverse reactions to iodinated contrast media (ICM) for computed tomography in referral hospitals in South Korea compared with hospitals in other countries. Materials and Methods:This survey investigation involved 59 Korean and 15 overseas hospitals using guideline-...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2017.0771
更新日期:2019-01-01 00:00:00
abstract:OBJECTIVE:The study aimed to describe portal stenting for postoperative portal occlusion with delayed (≥ 3 months) variceal bleeding in the afferent jejunal loop. MATERIALS AND METHODS:Eleven consecutive patients (age range, 2-79 years; eight men and three women) who underwent portal stenting between April 2009 and De...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2017.18.5.828
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVE:To evaluate the clinical efficacy as well as long-term clinical outcomes of superselective microcoil embolization for lower gastrointestinal bleeding (LGIB). MATERIALS AND METHODS:Between 1997 and 2009, 26 patients with intended transcatheter embolotherapy for LGIB were retrospectively reviewed. Embolization...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2013.14.2.259
更新日期:2013-03-01 00:00:00
abstract::We report two cases of paratracheal air cyst discovered incidentally at neck ultrasonography and confirmed at CT. The cysts were located at the inferoposterior aspect of the right lobe of the thyroid. Ultrasonography revealed an ill-defined hypoechoic mass containing hyperechoic foci which mimicked calcifications. Nec...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2003.4.2.136
更新日期:2003-04-01 00:00:00
abstract:Objective:To compare correlations between pulmonary function test (PFT) results and different reconstruction algorithms and to suggest the optimal reconstruction protocol for computed tomography (CT) quantification of low lung attenuation areas and airways in healthy individuals. Materials and Methods:A total of 259 s...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.19.6.1187
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:Although three-dimensional time-of-flight magnetic resonance angiography (3D TOF-MRA) is used frequently as a follow-up tool to assess the response of arteriovenous malformations (AVMs) after radiosurgery, the diagnostic accuracy of 3D TOF-MRA is not well known. We evaluated the diagnostic accuracy of contras...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2009.10.4.333
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVE:To retrospectively evaluate the frequency and risk factors for developing thrombus in a systemic vein such as the infrarenal inferior vena cava or the iliac vein, in which a balloon-occluded retrograde transvenous obliteration (B-RTO) catheter was indwelled. MATERIALS AND METHODS:Forty-nine patients who unde...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2012.13.3.324
更新日期:2012-05-01 00:00:00
abstract:OBJECTIVE:This study aimed to evaluate the diagnostic value of combining the quantitative parameters of shear wave elastography (SWE) and superb microvascular imaging (SMI) to breast ultrasound (US) to differentiate between benign and malignant breast masses. MATERIALS AND METHODS:A total of 200 pathologically confirm...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2019.0765
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:To compare various models of diffusion-weighted imaging including monoexponential apparent diffusion coefficient (ADC), biexponential (fast diffusion coefficient [Df], slow diffusion coefficient [Ds], and fraction of fast diffusion), stretched-exponential (distributed diffusion coefficient and anomalous expon...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2018.0474
更新日期:2019-05-01 00:00:00
abstract::Disseminated mycobacterial infection after bacillus Calmette-Guerin (BCG) vaccination is a very rare disorder, occurring mostly in patients with immunologic deficiency. We report a case of disseminated BCG infection in a 16-month-old girl with severe combined immunodeficiency. Plain radiographs showed multiple osteoly...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2000.1.2.114
更新日期:2000-04-01 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:OBJECTIVE:To determine histopathologic findings related to the indeterminate or inadequate result of fine-needle aspiration biopsy (FNAB) in papillary thyroid carcinomas (PTCs) and to correlate histopathological findings with ultrasonographic features of tumors. MATERIALS AND METHODS:We retrospectively reviewed the me...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2010.11.2.141
更新日期:2010-03-01 00:00:00
abstract::A malignant tumor is generally believed to be very unlikely to metastasize to the thymus. Only three cases of thymic metastases have been reported so far in the medical literature. We report here a rare case of metastatic breast cancer to the thymus, which was detected by CT and PET scanning, and the metastasis was al...
journal_title:Korean journal of radiology
pub_type: 杂志文章
doi:10.3348/kjr.2007.8.4.360
更新日期:2007-07-01 00:00:00