Hee Sun Park's research while affiliated with Konkuk University Medical Center and other places

Publications (308)

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While previous researchers have addressed motivations to join and continue using social media, this paper focuses on why users quit certain social media and change their favorite platforms, such as the current shift from Facebook to Twitter to Instagram and Snapchat. Furthermore, this exploratory study seeks to build an understanding of social medi...
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Background: In LI-RADS version 2018, observations showing at least one of five targetoid appearances on different sequences or postcontrast phases are assigned LR-M, indicating likely non-hepatocellular carcinoma (HCC) malignancy. Objective: To evaluate interobserver agreement of the LI-RADS targetoid appearances among a large number of radiologist...
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Two field studies investigated people’s inferences about the honesty or deceptiveness of two Korean artists whose work may or may not have been forged. Based on the projective motive model from truth-default theory, it was anticipated that judgments of honesty would be impacted by people’s perceptions of the artist’s apparent motive for lying. The...
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Background Recently introduced no-touch radiofrequency ablation (RFA) of hepatocellular carcinoma (HCC) has the potential to improve local tumor control. Purpose To evaluate midterm clinical outcomes of monopolar no-touch RFA in single HCCs 2.5 cm or smaller. Materials and Methods In this multicenter clinical trial (ClinicalTrials.gov: NCT03375281)...
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Truth-default Theory proposes that the frequency of lying is not normally distributed across the population and that most lies are told by a few prolific liars. A survey with a probability sample examined the frequency of lying among of adults in South Korea. Consistent with theoretical predictions and well-documented prior findings from the United...
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Combining different crisis response strategies of situational crisis communication theory, two studies examined the components of an appropriate crisis response strategy that includes an apology. Regarding the content of crisis responses, apologies that are combined with compensation were perceived to be more appropriate than those with scapegoatin...
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Background Accurate identification of microvascular invasion (MVI) in hepatocellular carcinoma (HCC) before treatment is critical for selecting a proper treatment strategy. Purpose To evaluate the interobserver agreement and the diagnostic performance of the MRI assessment of MVI in HCC according to the level of radiologist experience. Materials an...
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Purpose To investigate the clinical and CT features at admission to predict the progression to necrotizing pancreatitis (NP) in patients initially diagnosed with interstitial edematous pancreatitis (IEP). Materials and Methods Patients with IEP who underwent contrast-enhanced CT at admission and follow-up CT (< 14 days) were included (n = 178). Two...
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Background: The resistance of lung cancer to epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) is one of the unconquered frontiers in chemotherapy. Mitogen-inducible gene 6 (Mig-6) is known to inhibit the kinase activity of epidermal growth factor receptor (EGFR). Similarly, numerous studies of mouse models suggested tumor supp...
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Benign gallbladder diseases usually present with intraluminal lesions and localized or diffuse wall thickening. Intraluminal lesions of the gallbladder include gallstones, cholesterol polyps, adenomas, or sludge and polypoid type of gallbladder cancer must subsequently be excluded. Polyp size, stalk width, and enhancement intensity on contrast-enha...
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Background Hepatobiliary phase (HBP) hypointense nodules without arterial phase hyperenhancement (APHE) at gadoxetic acid-enhanced MRI may indicate hepatocellular carcinoma (HCC) or nonmalignant cirrhosis-associated nodules. Purpose To assess the distribution of pathologic diagnoses of HBP hypointense nodules without APHE at gadoxetic acid-enhanced...
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Purpose: This study was aimed to investigate the value of quantitative ultrasound (US) parameters from radiofrequency (RF) data analysis for assessing hepatic steatosis, using controlled attenuation parameter (CAP)-based steatosis grades as the reference standard. Methods: We analyzed 243 participants with both B-mode liver US with RF data acqui...
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Purpose: We measured ureter length in healthy Koreans using reformatted computed tomography (ULCT) and found ways to indirectly estimate ureter length by measuring LLCT, the length between the ureteropelvic junction and the ureterovesical junction, and standing and sitting height. Materials and methods: A total of 508 ureters of 254 healthy pati...
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Background/aims: A switch to systemic therapy, such as sorafenib, should be considered for hepatocellular carcinoma (HCC) patients refractory to transarterial chemoembolization (TACE). On the other hand, treatment changes are difficult if the liver function worsens to Child-Pugh B or C. Therefore, predicting the risk factors for non-responsiveness...
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Rapid urbanization has beset sustainable consumption. Although many countries are increasingly taking pro-environmental stances, most countries continue to have a low recycling rate and a high littering rate. This study examines the effect of temporal distance as a part of Construal-Level Theory and descriptive norms on pro- and contra-environmenta...
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While previous researchers have addressed motivations to join and continue using social media, this paper focuses on why users quit certain social media and change their favorite platforms, such as the current shift from Facebook to Twitter to Instagram and Snapchat. Furthermore, this exploratory study seeks to build an understanding of social medi...
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Full-text available
Objective: To validate the diagnostic value of a new point shear-wave elastography method, S-shearwave elastography (S-SWE; Samsung Medison Co., Ltd.), in noninvasive assessment of liver fibrosis. Materials and methods: In this prospective multicenter study, liver stiffness (LS) measurements for 600 participants were obtained with both S-SWE and...
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Background Whirlpool sign on computed tomography (CT) is pathognomic of adnexal torsion. Purpose To evaluate the visibility and common location of the whirlpool sign in adnexal torsion on CT. Material and Methods This retrospective study included 143 consecutive patients who underwent preoperative CT imaging and subsequent surgically confirmed as...
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The term “team player” originated in a Western cultural context and can be summarized in the form of five task and two social roles. Yet, can these roles be replicated outside of a U.S. context and will their endorsement vary across cultures and employment status? To answer this exploratory question, we collected data from a total of 483 participan...
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Background: Accurate detection of significant fibrosis (fibrosis stage 2 or higher on the METAVIR scale) is important especially for chronic hepatitis B (CHB) patients with high viral loads but with normal or mildly elevated alanine aminotransferase (ALT) levels because the presence of significant fibrosis is accepted as the indication for antivir...
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This study examined the geographical diversity and publication patterns of editors and editorial board members in communication journals. The results indicated that the diversity of the editorial community was related to the journal’s affiliated association, international orientation, and interdisciplinary nature. As for the publications, publishin...
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The current study presents Location-based application connectedness (LBS app connectedness) as an indicator of LBS application usage behavior. This paper develops and empirically cross-validates a model to explain the use of LBS apps by integrating the Technology Acceptance Model with the Innovation Resistance Model. The current study recruited a s...
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Background/aims: Surgical resection or ablation is recommended for the treatment of early hepatocellular carcinoma (HCC), whereas transarterial chemoembolization (TACE) is frequently used in early HCC ineligible for curative resection. We evaluated the clinical effects and safety of radiofrequency ablation (RFA) shortly after TACE in patients with...
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Objective This study was conducted to investigate tumor shrinkage and influencing factors in patients with hepatocellular carcinoma (HCC) from radiofrequency (RF) ablation following transcatheter arterial chemoembolization (TACE). Methods A total of 222 patients underwent combined sequential treatment of TACE and RF ablation for HCC at our institu...
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Introduction: This study aimed to characterize the tumor-infiltrating immune cells population in Kras/tumor protein 53 (Trp53)-driven lung tumors and to evaluate the combinatorial antitumor effect with MEK inhibitor (MEKi), trametinib, and immunomodulatory monoclonal antibodies (mAbs) targeting either programmed death -1 (PD-1) or programmed cell...
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Purpose to show the variety of imaging findings of unusual foreign body related Ultrasound features of Breast. Materials & Methods We retrospectively collected the data and analyzed Ultrasound features and Mammography findings. We correlated Ultrasound images with surgical specimen and histo-pathological findings. Results We collected total seven...
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This study examined social responsibility and individual right perception as factors related to intention to register and to intention to avoid registering in an organ donor registry among Koreans in South Korea, Korean Americans, and White Americans in the United States. Findings showed that compared to Korean and Korean Americans, White Americans...
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Background: We developed an additional laser guidance system to improve the efficacy and safety of conventional computed tomography (CT)-guided percutaneous transthoracic needle biopsy (PTNB), and we conducted this study to evaluate the efficacy and safety of our system. Methods: We retrospectively analyzed the medical records of 244 patients wh...
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Pulmonary metastases present a wide spectrum of radiological findings, some of which have been known to be useful for analogizing the possible origin or site of primary tumors. In the present report, we describe a unique case of pulmonary metastasis manifesting on chest computed tomography as multiple nodules with tortuous, serpentine, aneurysmal,...
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Objective: To evaluate effect of postbiopsy hemorrhage on detection of peripheral zone (PZ) prostate cancer by multiparametric MR imaging according to Gleason score and tumor volume. Methods: This retrospective study included 54 biopsy-proven prostate cancer patients (median age, 67.0 years) who underwent multiparametric MR imaging. Two independ...
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Cultures may differ in descriptive and injunctive norms about lying and telling the truth and also in terms of the extent to which individuals intend to tell a lie or the truth when a friend is in trouble. Study 1 (N = 460) showed that Koreans had stronger intentions to lie for a friend and weaker intentions to tell the truth than Americans. For ly...
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Purpose: To evaluate modified Dixon MRI techniques in hepatic fat estimation and to assess the effect of cirrhosis. Methods: 235 patients who underwent liver MRI were included. Correlation between modified Dixon techniques with MRS was assessed. Accuracy of MR techniques in hepatic fat estimation was calculated, and the result was compared betwe...
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In honor and remembrance of Dr. James C. McCroskey, this article looks at McCroskey’s influence in Korean academic fields. We find that McCroskey’s scholarly articles and books were increasingly cited from 2001 to 2016 and that his work has been cited in Korean journals across diverse fields. In addition to the communication and education fields, M...
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James C. McCroskey passed away on December 27, 2012. He contributed immensely to the study of human communication. He led the field in in-field publications and citations. Perhaps his most lasting contribution is naming and measuring communication constructs. James C. McCroskey contributed substantially to Communication Research Reports as a past e...
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Developments of EGFR-TKI and immunotherapy targeting the PD1/PD-L1 pathway are considered most important medical breakthroughs in lung cancer treatment. Nowadays, 3rd generation EGFR TKI is widely used for T790M positive 1st and 2nd EGFR-TKI resistant lung cancer patients. Immunotherapy is powerful option for lung cancer patients without drug targe...
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Two experiments provided the first tests of the Park-Levine Probability Model in an intercultural context. The Park-Levine Model predicts a linear relationship between truth–lie base-rates in messages judged and the proportion of correct truth-lie judgments. Korean students watched and judged videotapes of American students denying that they cheate...
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This research examined how information‐seeking tactics and sense of workplace community are related to one another. Data from Korea showed that workers (n = 314) who preferred overt tactics of seeking information (i.e., direct questioning) also reported a stronger sense of workplace community. Information types and sources did not moderate the rela...
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Background: To investigate the agreement between Kupffer phase of Sonazoid contrast-enhanced sonography (CEUS) and hepatobiliary phase of gadoxetic acid-enhanced MRI in the evaluation of focal liver lesions (FLLs). Methods: One hundred fifty-four FLLs in 154 patients who underwent both Sonazoid CEUS and gadoxetic acid-enhanced liver MRI were inc...
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Intratumoral calcification is one of the most noticeable of radiologic findings. It facilitates detection and provides information important for correctly diagnosing tumors. In the abdominopelvic cavity, a wide variety of tumors have calcifications with various imaging features, though the majority of such calcifications are dystrophic in nature. I...
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Background The number of pneumonia patients increased suddenly in Korean military hospitals in late December 2014, indicating the urgent need for an epidemic outbreak investigation. Methods We conducted a prospective study of pneumonia etiology among immunocompetent young adults admitted to Daejeon Armed Forces hospital. Patient blood and sputum s...
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Comparison of clinical features associated with severe adenovirus pneumonia and mild to moderate adenovirus pneumonia among military personnel. (DOCX)
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The distribution of co-infection with multiple pathogens. (DOCX)
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Chest computed tomography (CT) scan patterns of adenoviral pneumonia and number of days from fever onset to CT scan (n = 152). (DOCX)
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Comparison of laboratory findings and outcomes associated with severe adenovirus pneumonia and mild to moderate adenovirus pneumonia among military personnel. (DOCX)
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Objectives: To determine whether hepatic arterial and portal venous Doppler ultrasound measurements of the liver in cirrhotic patients correlate with patients' Model for End-Stage Liver Disease (MELD) scores, splenomegaly, or ascites. Materials and methods: Sonographic images and reports were reviewed of 264 patients with hepatic cirrhosis who u...
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Purpose . Topotecan and belotecan are camptothecin derivatives that are used to treat small cell lung cancer (SCLC). This study compared the toxicities and efficacies of belotecan and topotecan monotherapies in patients with SCLC. Methods . We retrospectively reviewed data from 94 patients with SCLC (with or without prior chemotherapy) who were tre...
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Lung cancer remains a major cause of cancer mortality. Malignant lesions are normally endogenously corrected by the immune surveillance system. However, tumors evade this immunity by inducing immunosuppressive microenvironments during cancer progression. It has been thought that there are two critical components of tumors making them capable of mai...
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Somatic mutation in the tyrosine kinase domain of epidermal growth factor receptor (EGFR) is a decisive factor for the therapeutic response to EGFR tyrosine kinase inhibitors (EGFR-TKIs) in lung adenocarcinoma. The stability of mutant EGFR is maintained by various regulators, including heat shock protein 90 (Hsp90). The C terminus of Hsc70-interact...
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Portal biliopathy is defined as abnormalities in the extra- and intrahepatic ducts and gallbladder of patients with portal hypertension. This condition is associated with extrahepatic venous obstruction and dilatation of the venous plexus of the common bile duct, resulting in mural irregularities and compression of the biliary tree. Most patients w...
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Purpose: To identify computed tomography (CT) findings for selection between conservative surgery and adnexectomy in patients of reproductive age with adnexal torsion. Methods: This retrospective study included 54 consecutive patients who underwent preoperative CT imaging before undergoing either conservative surgery or adnexectomy to treat adne...
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Spontaneous regression of malignant tumors is rare especially of lung tumor and biological mechanism of such remission has not been addressed. We report the case of a 79-year-old Korean patient with non-small cell lung cancer, squamous cell cancer with a right hilar tumor and multiple lymph nodes, lung to lung metastasis that spontaneously regresse...
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Giant cell hepatitis (GCH) with autoimmune hemolytic anemia (AHA) is a very rare disease characterized by early onset and severe clinical manifestations, including immune hemolytic anemia and hepatitis with cholestasis. The prognosis is poor despite aggressive immunosuppressive therapy. We report here the first case of GCH with AHA in East Asia. A...
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The effort to increase Web organ donation registrations in Michigan by enhancing 2 types of university campaigns with social media strategies informed by social identity theory is the focus of this research. The two campaigns focused on either ingroup or rivalry outgroup social identification, and each was enhanced with individually focused social...
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Background: Correlation between colorectal cancer (CRC) and abdominal obesity has been established, but there is a paucity of data on non-obese CRC patients. The aim of this study was to establish the characteristics of CRCs that occur in such patients. Materials and methods: Consecutive CRC patients without cachexia were included. Unintended bo...
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In this study, we examined cultural differences in estimation of both the percentage of people who would donate organs to others when they died and the percentage of people who would discuss their decision to donate organs with their parents. Participants were 79 undergraduates at a Midwestern university in the USA and 116 undergraduates at a unive...
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Background: The efficacy of epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) therapy can be measured based on the rate of treatment response, based on the Response Evaluation Criteria in Solid Tumors (RECIST) criteria or progression-free survival (PFS). However, there are some patients harboring sensitive EGFR mutations who re...
Book
Diagnostic Ultrasound: Abdomen and Pelvis combines anatomy, diagnosis, and differential diagnosis information specific to the abdomen and pelvis, presenting multiple vantage points to ensure clarity and full comprehension of each topic. This image-rich resource provides examples and insight into the full spectrum of imaging appearances observed in...
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Objective: To evaluate the utility of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using macromolecular contrast agent (P792) for assessment of vascular disrupting drug effect in rabbit VX2 liver tumor models. Materials and methods: This study was approved by our Institutional Animal Care and Use Committee. DCE-MRI was performe...