Chang Kyu Sung

ORCID: 0000-0003-4922-5107
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Research Areas
  • MRI in cancer diagnosis
  • Ovarian cancer diagnosis and treatment
  • Renal and Vascular Pathologies
  • Urinary and Genital Oncology Studies
  • Pediatric Urology and Nephrology Studies
  • Urological Disorders and Treatments
  • Microbial Inactivation Methods
  • Prostate Cancer Diagnosis and Treatment
  • Endometriosis Research and Treatment
  • Renal cell carcinoma treatment
  • Microfluidic and Bio-sensing Technologies
  • Bladder and Urothelial Cancer Treatments
  • Sperm and Testicular Function
  • Magnetic and Electromagnetic Effects
  • Endometrial and Cervical Cancer Treatments
  • Uterine Myomas and Treatments
  • Kidney Stones and Urolithiasis Treatments
  • Prostate Cancer Treatment and Research
  • Radiomics and Machine Learning in Medical Imaging
  • Ovarian function and disorders
  • Laser Applications in Dentistry and Medicine
  • Advanced X-ray and CT Imaging
  • Blood Pressure and Hypertension Studies
  • Renal and related cancers
  • Urologic and reproductive health conditions

Seoul National University
2012-2024

Boramae Medical Center
2013-2024

Seoul Metropolitan Government
2009-2024

Thales (Australia)
2023

American College of Radiology
2019

National University College
2011

New Generation University College
2011

Kyungpook National University Hospital
2008

Angiomyolipoma (AML) with minimal fat may mimic renal cell carcinoma (RCC) and is difficult to distinguish from RCC imaging studies alone. Precise diagnostic strategies have been explored discern AML RCC.To compare the morphological enhancement features of those size-matched on computed tomography (CT).Our study included 143 pathologically proved tumors (29 fat: mean diameter, 2.5 cm; range, 1.2-4 114 RCC: 2.8 1.3-4 cm). All patients underwent biphasic helical CTs. Two radiologists...

10.1177/0284185115618547 article EN Acta Radiologica 2015-12-13

Segmental Enhancement Inversion of Small Renal Oncocytoma: Differences in Prevalence According to Tumor SizeSungmin Woo1, Jeong Yeon Cho1, 2, Seung Hyup Kim1, Sang Youn Hak Jong Lee3, Sung Il Hwang3, Min Hoan Moon4 and Chang Kyu Sung4Audio Available | Share

10.2214/ajr.12.9300 article EN American Journal of Roentgenology 2013-04-25

Objective:The purpose of the current study was to develop support vector machine (SVM) and artificial neural network (ANN) models for pre-operative prediction advanced prostate cancer by using parameters acquired from transrectal ultrasound (TRUS)-guided biopsies, compare accuracies between two models.Materials Methods: Five hundred thirty-two consecutive patients who underwent biopsies prostatectomies were divided into training test groups (n = 300 versus n 232).From data in group, clinical...

10.3348/kjr.2011.12.5.588 article EN cc-by-nc Korean Journal of Radiology 2011-01-01

Objective: To evaluate the determinant pretreatment CT findings that can predict surgical intervention for patients suffering from corpus luteal cyst rupture with hemoperitoneum.Materials and Methods: From January 2009 to December 2014, a total of 106 female (mean age, 26.1 years; range, 17-44 years) who visited emergency room our institute acute abdominal pain were subsequently diagnosed ruptured hemoperitoneum included in retrospective study.The analysis size, shape, sentinel clot sign,...

10.3348/kjr.2017.18.4.607 article EN Korean Journal of Radiology 2017-01-01

Objective: To determine the feasibility of labeling human mesenchymal stem cells (hMSCs) with bifunctional nanoparticles and assessing their potential as imaging probes in monitoring hMSC transplantation. Materials Methods:The T1 T2 relaxivities (MNP@SiO 2 [RITC]-PEG) were measured at 1.5T 3T magnetic resonance scanner.Using hMSCs nanoparticles, efficiency, toxicity, proliferation assessed.Confocal laser scanning microscopy transmission electron used to specify intracellular localization...

10.3348/kjr.2009.10.6.613 article EN Korean Journal of Radiology 2009-01-01

Objective The purpose of our study was to assess computed tomographic (CT) findings adnexal torsion through a matched case-control analysis. Materials and methods This retrospective, single-institution included 43 women with age- ovarian mass-matched control women. CT images were evaluated independently by two readers for the following: prominent peripheral follicles, uterine deviation, thickened pedicles, whirl sign, navel sign. Comparisons performed using Chi square test receiver operating...

10.1371/journal.pone.0200190 article EN cc-by PLoS ONE 2018-07-11

Background Identification of the source postpartum hemorrhage (PPH) is important for embolization because PPH frequently originates from non-uterine arteries. Purpose To evaluate clinical importance identifying arteries causing and results their selective embolization. Material Methods This retrospective study enrolled 59 patients who underwent June 2009 to July 2016. Angiographic findings medical records were reviewed determine whether contributed PPH. Arteries showing extravasation or...

10.1177/0284185117738547 article EN Acta Radiologica 2017-10-24

The objective of our study was to evaluate the performance multiparametric MRI with Prostate Imaging Reporting and Data System version 2 (PI-RADSv2) for detecting prostate cancer (PCA) clinically significant PCA through this per-lesion one-to-one correlation between pathologically proven lesions MRI-visible lesions.A total 93 from 44 patients who underwent radical prostatectomy were included in retrospective study. Two radiologists scored every visible lesion a PI-RADSv2 score 3, 4, or 5...

10.2214/ajr.17.18684 article EN American Journal of Roentgenology 2018-04-27

Ultrasonography (renamed from the Journal of Korean Society Ultrasound in Medicine January 2014), official English-language journal (KSUM), is an international peer-reviewed academic dedicated to practice, research, technology, and education dealing with medical ultrasound, Aims Scope:Ultrasonography ultrasound.It published four times per year: 1, April July October 1. Original articles, topical reviews, pictorial essays, notable case reports are covering state-of-the-art content. also...

10.14366/usg.15055 article EN cc-by-nc ULTRASONOGRAPHY 2016-07-07

This study is aimed to explore the performance of texture-based machine learning and image-based deep-learning for enhancing detection Transitional-zone prostate cancer (TZPCa) in background benign prostatic hyperplasia (BPH), using a one-to-one correlation between prostatectomy-based pathologically proven lesion MRI. Seventy patients confirmed as TZPCa twenty-nine BPH without by radical prostatectomy. For texture analysis, radiologist drew region interest (ROI) correlated surrounding on...

10.1097/md.0000000000035039 article EN cc-by-nc Medicine 2023-09-29

Irreversible electroporation has clinically been used to treat various types of cancer. A plan on how apply irreversible before practicing is very important increase the ablation area and reduce side effects. Several electrical models have developed predict with applied electric energy. In this experiment, static relationship between energy ablated was mathematically experimentally investigated at 10 hours after applying electroporation. We performed liver tissue Sprague Dawley rats (male, 8...

10.1177/1533034616640642 article EN Technology in Cancer Research & Treatment 2016-04-14

The aim of this study was to explore the usefulness resistive index (RI) on spectral Doppler ultrasonography (US) in detection renal cell carcinoma (RCC) patients with end-stage disease (ESRD).Seventeen ESRD kidneys which masses were suspected routine US subjected. They underwent computed tomography scans and additional for characterization detected lesions. All radical nephrectomy suspicion RCC. Fourteen finally included. RI measurements conducted region mass background parenchyma....

10.14366/usg.14001 article EN cc-by-nc ULTRASONOGRAPHY 2014-02-10

The purpose of our study was to evaluate the value a ratio attenuation measurements urine in each kidney (hereafter referred as CT ratio) detection and lateralization significant renal artery stenosis (RAS).In 33 patients with suspected renovascular hypertension 43 normotensive patients, 5-mm-thick transverse scans area were obtained 4 min after helical angiography (CTA). measured, its calculated. All 76 underwent intraarterial digital subtraction within 2 days examination. results...

10.2214/ajr.05.0045 article EN American Journal of Roentgenology 2006-07-21

A 58-year-old woman presented acutely with a 3-day history of general weakness, vomiting and fever. For 2 years she had untreated diabetes mellitus. On examination was ill, blood pressure 64/47mmHg, heart rate: 111 beats/min, respiration 28/min body temperature 37.28C. The right upper abdomen tender. There loin tenderness. Investigations: white cell count 10 380/mm; haemoglobin 7.8 g/dl; haematocrit 23.1%; platelet 36 000/mm; urea nitrogen 70mg/dl; serum creatinine 6.2mg/dl; glucose...

10.1093/ndt/gfl462 article EN Nephrology Dialysis Transplantation 2006-08-05

Urine-filled bladder can be evaluated easily with ultrasound, and tumors are usually well shown at ultrasound. Although ultrasound is not a primary imaging modality for staging of tumors, it provide general information regarding depth tumor invasion into the proper muscle or perivesical adipose tissue. Ultrasound also useful in showing nonneoplastic lesions bladder, such as stone, cystitis, diverticulum ureterocele. Color Doppler show vascularity tumor. It shows urine flow from ureteral...

10.1016/s0929-6441(08)60026-0 article EN Journal of Medical Ultrasound 2007-01-01

The interfacial bonding of silicone-coated stents was characterized by field emission scanning electron microscopy and anodic potentiodynamic polarization tests.The coaxial in-lens secondary imaging revealed partial between silicon rubber nitinol alloy strips in both primer-treatment plasma-treatment cases.Several strands the polymer stent substrate were observed cases it seems that strength is same.However, tests have shown corrosion rates plasma-treated less than half primer-treated...

10.12693/aphyspola.129.857 article EN Acta Physica Polonica A 2016-04-01

The goal of this study was to evaluate the effect vascular compliance, resistance, and pulse rate on resistive index (RI) by using an electrical circuit model simulate renal blood flow. In order analyze arterial Doppler waveform, we modeled blood-flow with equivalent simple containing inductance, capacitance. relationships among impedance, compliance were derived from well-known equations, including Kirchhoff's current law for alternating circuits. Simulated velocity-time profiles pulsatile...

10.14366/usg.15056 article EN cc-by-nc ULTRASONOGRAPHY 2015-09-20
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