Impact of Energy and Access Methods on Extrahepatic Tumor Spreading and the Ablation Zone: An Ex vivo Experiment Using a Subcapsular Tumor Model.

Abstract:

OBJECTIVE:To evaluate the impact of energy and access methods on extrahepatic tumor spreading and the ablation zone in an ex vivo subcapsular tumor mimic model with a risk of extrahepatic tumor spreading. MATERIALS AND METHODS:Forty-two tumor-mimics were created in bovine liver blocks by injecting a mixture of iodine contrast material just below the liver capsule. Radiofrequency (RF) ablations were performed using an electrode placed parallel or perpendicular to hepatic surface through the tumor mimic with low- and high-power protocols (groups 1 and 2, respectively). Computed tomography (CT) scans were performed before and after ablation. The presence of contrast leak on the hepatic surface on CT, size of ablation zone, and timing of the first roll-off and popping sound were compared between the groups. RESULTS:With parallel access, one contrast leak in group 1 (1/10, 10%) and nine in group 2 (9/10, 90%) (p < 0.001) were identified on post-ablation CT. With perpendicular access, six contrast leaks were identified in each group (6/11, 54.5%). The first roll-off and popping sound were significantly delayed in group 1 irrespective of the access method (p = 0.002). No statistical difference in the size of the ablation zone of the liver specimen was observed between the two groups (p = 0.247). CONCLUSION:Low-power RF ablation with parallel access is proposed to be effective and safe from extrahepatic tumor spreading in RF ablation of a solid hepatic tumor in the subcapsular location. Perpendicular placement of an electrode to the capsule is associated with a risk of extrahepatic tumor spreading regardless of the power applied.

journal_name

Korean J Radiol

authors

Kim JS,Ko Y,Kwon H,Kim M,Lee JK

doi

10.3348/kjr.2018.0564

subject

Has Abstract

pub_date

2019-04-01 00:00:00

pages

580-588

issue

4

eissn

1229-6929

issn

2005-8330

pii

20.580

journal_volume

20

pub_type

杂志文章
  • Prediction of Treatment Response in Patients with Chronic Obstructive Pulmonary Disease by Determination of Airway Dimensions with Baseline Computed Tomography.

    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

    authors: Park HJ,Lee SM,Choe J,Lee SM,Kim N,Lee JS,Oh YM,Seo JB

    更新日期:2019-02-01 00:00:00

  • Effect of ultrasound-guided radiofrequency ablation in incompletely treated hepatocellular carcinoma after transcatheter arterial chemoembolization.

    abstract:OBJECTIVE:To evaluate the effectiveness of ultrasound-guided radiofrequency (RF) ablation in patients with incompletely treated hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolization (TACE) and to evaluate possible prognostic factors for this therapy. SUBJECTS AND METHODS:Thirty nine patients wi...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2012.13.S1.S104

    authors: Chang NK,Shin SS,Kim JW,Kim HJ,Jeong YY,Heo SH,Kim JK,Kang HK

    更新日期:2012-01-01 00:00:00

  • Congenital pial arteriovenous fistula in the temporal region draining into cavernous sinus: a case report.

    abstract::This report concerns a 4-month-old infant with progressive prominent and redness of his left eye since birth. This report concerns a 4-month-old infant with progressive prominent redness of his left eye since birth. Angiography revealed a congenital pial arteriovenous fistula between the temporal branch of the left po...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2013.14.3.497

    authors: Zhang Z,Yang K,Wang C,Zhang C,Xie X,Tang J

    更新日期:2013-05-01 00:00:00

  • Various tumor-mimicking lesions in the musculoskeletal system: causes and diagnostic approach.

    abstract::Tumor-mimicking lesions in the musculoskeletal system can be defined as lesions mistaken as tumors due to the presence of palpation upon physical examination or a tumor-like appearance upon radiological examination. Moreover, tumor-mimicking lesions show diverse etiologies and anatomic locations. We illustrated the va...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章,评审

    doi:10.3348/kjr.2011.12.2.220

    authors: Kim SY,Park JS,Ryu KN,Jin W,Park SY

    更新日期:2011-03-01 00:00:00

  • The efficacy and long-term outcome of microcoil embolotherapy for acute lower gastrointestinal bleeding.

    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

    authors: Teng HC,Liang HL,Lin YH,Huang JS,Chen CY,Lee SC,Pan HB

    更新日期:2013-03-01 00:00:00

  • Pre-operative prediction of advanced prostatic cancer using clinical decision support systems: accuracy comparison between support vector machine and artificial neural network.

    abstract:OBJECTIVE:The purpose of the current study was to develop support vector machine (SVM) and artificial neural network (ANN) models for the pre-operative prediction of advanced prostate cancer by using the parameters acquired from transrectal ultrasound (TRUS)-guided prostate biopsies, and to compare the accuracies betwe...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2011.12.5.588

    authors: Kim SY,Moon SK,Jung DC,Hwang SI,Sung CK,Cho JY,Kim SH,Lee J,Lee HJ

    更新日期:2011-09-01 00:00:00

  • Intraductal tubular carcinoma of the pancreas: a case report with the imaging findings.

    abstract::We describe here a case of intraductal tubular carcinoma of the main pancreatic duct. Gadolinium-enhanced pancreas magnetic resonance (MR) imaging showed an enhancing mass that was confined in the dilated main pancreatic duct of the pancreatic body, along with dilatation of the upstream main pancreatic duct and chroni...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2008.9.5.473

    authors: Oh DK,Kim SH,Choi SH,Jang KT

    更新日期:2008-09-01 00:00:00

  • Spontaneous intramural full-length dissection of esophagus treated with surgical intervention: multidetector CT diagnosis with multiplanar reformations and virtual endoscopic display.

    abstract::Intramural esophageal dissection (IED) is an uncommon disorder characterized by separation of the mucosal and submucosal layers of the esophagus. Iatrogenic intervention is the most common cause of IED, but spontaneous dissection is rare. We report an unusually complicated case of spontaneous IED that involved the ful...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2014.15.1.173

    authors: Khil EK,Lee H,Her K

    更新日期:2014-01-01 00:00:00

  • MR imaging of central diabetes insipidus: a pictorial essay.

    abstract::Central diabetes insipidus (DI) can be the outcome of a number of diseases that affect the hypothalamic-neurohypophyseal axis. The causes of the condition can be classified as traumatic, inflammatory, or neoplastic. Traumatic causes include postoperative sella or transection of the pituitary stalk, while infectious or...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章,评审

    doi:10.3348/kjr.2001.2.4.222

    authors: Shin JH,Lee HK,Choi CG,Suh DC,Kim CJ,Hong SK,Na DG

    更新日期:2001-10-01 00:00:00

  • 2017 Thyroid Radiofrequency Ablation Guideline: Korean Society of Thyroid Radiology.

    abstract::Thermal ablation using radiofrequency is a new, minimally invasive modality employed as an alternative to surgery in patients with benign thyroid nodules and recurrent thyroid cancers. The Task Force Committee of the Korean Society of Thyroid Radiology (KSThR) developed recommendations for the optimal use of radiofreq...

    journal_title:Korean journal of radiology

    pub_type: 指南,杂志文章

    doi:10.3348/kjr.2018.19.4.632

    authors: Kim JH,Baek JH,Lim HK,Ahn HS,Baek SM,Choi YJ,Choi YJ,Chung SR,Ha EJ,Hahn SY,Jung SL,Kim DS,Kim SJ,Kim YK,Lee CY,Lee JH,Lee KH,Lee YH,Park JS,Park H,Shin JH,Suh CH,Sung JY,Sim JS,Youn I,Choi M,Na DG,G

    更新日期:2018-07-01 00:00:00

  • A suspicious breast lesion detected by dynamic contrast-enhanced MRI and pathologically confirmed as capillary hemangioma: a case report and literature review.

    abstract::Breast capillary hemangioma is a type of benign vascular tumor which is rarely seen. Little is known about its presentation on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). Here, we describe a case of suspicious breast lesion detected by DCE-MRI and pathologically confirmed as capillary hemangioma. O...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2013.14.6.869

    authors: Yang LH,Ma S,Li QC,Xu HT,Wang X,Wang EH

    更新日期:2013-11-01 00:00:00

  • Brain MRI findings of carbon disulfide poisoning.

    abstract:OBJECTIVE:To evaluate the findings of brain MRI in patients with carbon disulfide poisoning. MATERIALS AND METHODS:Ninety-one patients who had suffered carbon disulfide poisoning [male:female=87:4; age, 32-74 (mean 53.3) years] were included in this study. To determine the extent of white matter hyperintensity (Grade ...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2002.3.3.158

    authors: Cha JH,Kim SS,Han H,Kim RH,Yim SH,Kim MJ

    更新日期:2002-07-01 00:00:00

  • Radiation dose reduction of chest CT with iterative reconstruction in image space - Part II: assessment of radiologists' preferences using dual source CT.

    abstract:OBJECTIVE:To evaluate the impact of radiation dose and reconstruction algorithms on radiologists' preferences, and whether an iterative reconstruction in image space (IRIS) can be used for dose reduction in chest CT. MATERIALS AND METHODS:Standard dose chest CT (SDCT) in 50 patients and low dose chest CT (LDCT) in ano...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2012.13.6.720

    authors: Hwang HJ,Seo JB,Lee JS,Song JW,Kim SS,Lee HJ,Lim CH

    更新日期:2012-11-01 00:00:00

  • Diffusion-weighted MRI in intrahepatic bile duct adenoma arising from the cirrhotic liver.

    abstract::A 64-year-old male patient with liver cirrhosis underwent a CT study for hepatocellular carcinoma surveillance, which demonstrated a 1.4-cm hypervascular subcapsular tumor in the liver. On gadoxetic acid-enhanced MRI, the tumor showed brisk arterial enhancement and persistent hyperenhancement in the portal phase, but ...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2013.14.5.769

    authors: An C,Park S,Choi YJ

    更新日期:2013-09-01 00:00:00

  • Delayed cerebral infarction due to stent folding deformation following carotid artery stenting.

    abstract::We report a case of delayed cerebral infarction due to stent longitudinal folding deformation following carotid artery stenting using a self-expandable stent with an open-cell design. The stented segment of the left common carotid artery was divided into two different lumens by this folding deformation, and the separa...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2014.15.6.858

    authors: Seo KD,Lee KY,Kim BM,Suh SH

    更新日期:2014-11-01 00:00:00

  • Erratum: RE: An Unusual Course of Sinoatrial Node Artery Originating from Distal Right Coronary Artery.

    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

    authors: Kara K,Ozturk E,Saglam M

    更新日期:2015-01-01 00:00:00

  • Comparison of Urologist Satisfaction for Different Types of Prostate MRI Reports: A Large Sample Investigation.

    abstract:OBJECTIVE:To evaluate urologist satisfaction on structured prostate MRI reports, including report with tumor-node-metastasis (TNM) staging (report B) and with Prostate Imaging Reporting and Data System (PI-RADS) score with/without TNM staging (report C, report with PI-RADS score only [report C-a] and report with PI-RAD...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2019.0820

    authors: Zhong J,Qin W,Li Y,Wang Y,Huan Y,Ren J

    更新日期:2020-12-01 00:00:00

  • Thymic metastasis in breast cancer: a case report.

    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

    authors: Park SB,Kim HH,Shin HJ,Paik MH,Kim DB,Gong G

    更新日期:2007-07-01 00:00:00

  • High-Resolution Magnetic Resonance Imaging Using Compressed Sensing for Intracranial and Extracranial Arteries: Comparison with Conventional Parallel Imaging.

    abstract: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 p...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2018.0424

    authors: Suh CH,Jung SC,Lee HB,Cho SJ

    更新日期:2019-03-01 00:00:00

  • Role of fully covered self-expandable metal stent for treatment of benign biliary strictures and bile leaks.

    abstract::Endoscopic therapy by balloon dilation and placement of multiple large-bore plastic stents is the treatment of choice for benign biliary stricture. This approach is effective but it typically requires multiple endoscopic sessions given the short duration of stent patency. The endoscopic approach for treatment of bile ...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章,评审

    doi:10.3348/kjr.2012.13.S1.S67

    authors: Pausawasadi N,Soontornmanokul T,Rerknimitr R

    更新日期:2012-01-01 00:00:00

  • Ultrasound-Guided Intraoperative Radiofrequency Ablation and Surgical Resection for Liver Metastasis from Malignant Gastrointestinal Stromal Tumors.

    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

    authors: Yoon IS,Shin JH,Han K,Kim PN,Kim KH,Kang YK,Ko HK

    更新日期:2018-01-01 00:00:00

  • Multivariate analysis of the predictors of survival for patients with hepatocellular carcinoma undergoing transarterial chemoembolization: focusing on superselective chemoembolization.

    abstract:OBJECTIVE:While the prognostic factors of survival for patients with hepatocellular carcinoma (HCC) who underwent transarterial chemoembolization (TACE) are well known, the clinical significance of performing selective TACE for HCC patients has not been clearly documented. We tried to analyze the potential factors of d...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2008.9.6.534

    authors: Ji SK,Cho YK,Ahn YS,Kim MY,Park YO,Kim JK,Kim WT

    更新日期:2008-11-01 00:00:00

  • Biliary ascariasis: MR cholangiography findings in two cases.

    abstract::We describe the imaging features of two cases of biliary ascariasis. Ultrasonography and CT showed no specific abnormal findings, but MR cholangiography clearly demonstrated an intraductal linear filling defect that led to the correct diagnosis. MR cholangiography is thus a useful technique for the diagnosis of biliar...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2001.2.3.175

    authors: Hwang CM,Kim TK,Ha HK,Kim PN,Lee MG

    更新日期:2001-07-01 00:00:00

  • Prostate-Specific Membrane Antigen PET Imaging in Prostate Cancer: Opportunities and Challenges.

    abstract::The aim of this systematic review was to describe the characteristics of prostate-specific membrane antigen (PSMA)-targeting PET and their clinical applications in prostate cancer patients. There have been major strides in the design, synthesis of PSMA-targeting PET tracers over the past several years. PSMA-targeting ...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章,评审

    doi:10.3348/kjr.2018.19.5.819

    authors: Oh SW,Cheon GJ

    更新日期:2018-09-01 00:00:00

  • Feasibility of Adjustable Electrodes for Radiofrequency Ablation of Benign Thyroid Nodules.

    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

    authors: Lee J,Shin JH,Hahn SY,Park KW,Choi JS

    更新日期:2020-03-01 00:00:00

  • Quantification of Fat Concentration and Vascular Response in Brown and White Adipose Tissue of Rats by Spectral CT Imaging.

    abstract:OBJECTIVE:The purpose of the study was to non-invasively characterize and discriminate brown adipose tissue (BAT) from white adipose tissue (WAT) in rats using spectral computed tomography (CT) with histological validation. MATERIALS AND METHODS:A lipid-containing phantom (lipid fractions from 0% to 100%) was imaged w...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2019.0111

    authors: Peng XG,Zhao Z,Chang D,Bai Y,Xu Q,Ju S

    更新日期:2020-02-01 00:00:00

  • Management of Adverse Reactions to Iodinated Contrast Media for Computed Tomography in Korean Referral Hospitals: A Survey Investigation.

    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

    authors: Han S,Yoon SH,Lee W,Choi YH,Kang DY,Kang HR

    更新日期:2019-01-01 00:00:00

  • A computer-aided diagnosis for evaluating lung nodules on chest CT: the current status and perspective.

    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

    authors: Goo JM

    更新日期:2011-03-01 00:00:00

  • Using 2-mSv Appendiceal CT in Usual Practice for Adolescents and Young Adults: Willingness Survey of 579 Radiologists, Emergency Physicians, and Surgeons from 20 Hospitals.

    abstract:OBJECTIVE:To survey care providers' willingness to use 2-mSv computed tomography (CT) in their usual practice for adolescents and young adults with suspected appendicitis. MATERIALS AND METHODS:An ethical committee approved this prospective study. We introduced 2-mSv CT in 20 hospitals through a pragmatic clinical tri...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2019.0010

    authors: Kim HJ,Lee KH,Kim MJ,Park SB,Ko Y,LOCAT Group.

    更新日期:2020-01-01 00:00:00

  • Assessment of Diffusion Tensor Imaging Parameters of Hepatic Parenchyma for Differentiation of Biliary Atresia from Alagille Syndrome.

    abstract:OBJECTIVE:To assess diffusion tensor imaging (DTI) parameters of the hepatic parenchyma for the differentiation of biliary atresia (BA) from Alagille syndrome (ALGS). MATERIALS AND METHODS:This study included 32 infants with BA and 12 infants with ALGS groups who had undergone DTI. Fractional anisotropy (FA) and mean ...

    journal_title:Korean journal of radiology

    pub_type: 杂志文章

    doi:10.3348/kjr.2019.0824

    authors: Abdel Razek AAK,Abdalla A,Elfar R,Ashmalla GA,Ali K,Barakat T

    更新日期:2020-12-01 00:00:00