Jungwon Kwak
YOU?
Author Swipe
View article: Evaluation of intensity‐modulated radiation therapy factors by treatment site and technique for various linear accelerators
Evaluation of intensity‐modulated radiation therapy factors by treatment site and technique for various linear accelerators Open
Purpose The intensity‐modulated radiation therapy (IMRT) factor, which is essential for calculating leakage radiation and secondary barrier thicknesses, is represented by the ratio of average monitor units (MUs) per unit dose in IMRT compa…
View article: Feasibility test of 3 dimensional patient specific quality assurance of gamma knife radiosurgery using novel mobile phospor probe system
Feasibility test of 3 dimensional patient specific quality assurance of gamma knife radiosurgery using novel mobile phospor probe system Open
This study evaluates a novel three-dimensional (3D) quality assurance (QA) device, the Mobile Phosphor Probe (MPP), for pretreatment dose verification in Gamma Knife (GK) stereotactic radiosurgery. The MPP system consists of a cylindrical …
View article: Challenges and opportunities to integrate artificial intelligence in radiation oncology: a narrative review
Challenges and opportunities to integrate artificial intelligence in radiation oncology: a narrative review Open
Artificial intelligence (AI) is rapidly transforming various medical fields, including radiation oncology. This review explores the integration of AI into radiation oncology, highlighting both challenges and opportunities. AI can improve t…
View article: Evaluation of Fused Deposition Modeling Materials for 3D-Printed Container of Dosimetric Polymer Gel
Evaluation of Fused Deposition Modeling Materials for 3D-Printed Container of Dosimetric Polymer Gel Open
Accurate dosimetric verification is becoming increasingly important in radiotherapy. Although polymer gel dosimetry may be useful for verifying complex 3D dose distributions, it has limitations for clinical application due to its strong re…
View article: P03.07.B DOSIMETRIC ACCURACY OF CYBERKNIFE STEREOTACTIC RADIOSURGERY FOR BENIGN PERIOPTIC TUMOR
P03.07.B DOSIMETRIC ACCURACY OF CYBERKNIFE STEREOTACTIC RADIOSURGERY FOR BENIGN PERIOPTIC TUMOR Open
BACKGROUND The Cyberknife (CK) SRS delivers a highly focused ablative radiation dose to tumors to effectively control tumors with minimized radiation toxicity to surrounding normal tissues. This study aimed to evaluate the dosimetric accur…
View article: Feasibility of a Linear Diode Array Detector for Commissioning of a Radiotherapy Planning System
Feasibility of a Linear Diode Array Detector for Commissioning of a Radiotherapy Planning System Open
Purpose: Although ionization chambers are widely used to measure beam commissioning data, point-by-point measurements of all the profiles with various field size and depths are timeconsuming tasks.As an alternative, we investigated the fea…
View article: A study of quantitative indicators for slice sorting in cine-mode 4DCT
A study of quantitative indicators for slice sorting in cine-mode 4DCT Open
The uncertainties of four-dimensional computed tomography (4DCT), also called as residual motion artefacts (RMA), induced from irregular respiratory patterns can degrade the quality of overall radiotherapy. This study aims to quantify and …
View article: Usefulness of Semi-cylindrical Beam Spoiler in Treatment of Early Glottic Cancer Using 6 MV Photon Beam
Usefulness of Semi-cylindrical Beam Spoiler in Treatment of Early Glottic Cancer Using 6 MV Photon Beam Open
The sCBS of the 6 MV photon beam could be a useful tool for the treatment of early glottic cancers.
View article: Feasibility of automated planning for whole‐brain radiation therapy using deep learning
Feasibility of automated planning for whole‐brain radiation therapy using deep learning Open
Purpose The purpose of this study was to develop automated planning for whole‐brain radiation therapy (WBRT) using a U‐net‐based deep‐learning model for predicting the multileaf collimator (MLC) shape bypassing the contouring processes. Me…
View article: Plan optimization with L0-norm and group sparsity constraints for a new rotational, intensity-modulated brachytherapy for cervical cancer
Plan optimization with L0-norm and group sparsity constraints for a new rotational, intensity-modulated brachytherapy for cervical cancer Open
The aim of this work is to build a framework that comprehends inverse planning procedure and plan optimization algorithm tailored to a novel directional beam intensity-modulated brachytherapy (IMBT) of cervical cancer using a rotatable, si…
View article: Abdominal multi-organ auto-segmentation using 3D-patch-based deep convolutional neural network
Abdominal multi-organ auto-segmentation using 3D-patch-based deep convolutional neural network Open
Segmentation of normal organs is a critical and time-consuming process in radiotherapy. Auto-segmentation of abdominal organs has been made possible by the advent of the convolutional neural network. We utilized the U-Net, a 3D-patch-based…
View article: Comparing phase‐ and amplitude‐gated volumetric modulated arc therapy for stereotactic body radiation therapy using 3D printed lung phantom
Comparing phase‐ and amplitude‐gated volumetric modulated arc therapy for stereotactic body radiation therapy using 3D printed lung phantom Open
Purpose To compare the dosimetric impact and treatment delivery efficacy of phase‐gated volumetric modulated arc therapy ( VMAT ) vs amplitude‐gated VMAT for stereotactic body radiation therapy ( SBRT ) for lung cancer by using realistic t…
View article: Volumetric-Modulated Arc Radiotherapy Using Knowledge-Based Planning: Application to Spine Stereotactic Body Radiotherapy
Volumetric-Modulated Arc Radiotherapy Using Knowledge-Based Planning: Application to Spine Stereotactic Body Radiotherapy Open
Purpose To evaluate the clinical feasibility of knowledge-based planning (KBP) for volumetric-modulated arc radiotherapy (VMAT) in spine stereotactic body radiotherapy (SBRT). Methods Forty-eight VMAT plans for spine SBRT was studied. Two …
View article: An additional tilted‐scan‐based <scp>CT</scp> metal‐artifact‐reduction method for radiation therapy planning
An additional tilted‐scan‐based <span>CT</span> metal‐artifact‐reduction method for radiation therapy planning Open
Purpose As computed tomography ( CT ) imaging is the most commonly used modality for treatment planning in radiation therapy, metal artifacts in the planning CT images may complicate the target delineation and reduce the dose calculation a…
View article: Dosimetric evaluation of respiratory gated volumetric modulated arc therapy for lung stereotactic body radiation therapy using 3D printing technology
Dosimetric evaluation of respiratory gated volumetric modulated arc therapy for lung stereotactic body radiation therapy using 3D printing technology Open
Purpose: This study aimed to evaluate the dosimetric accuracy of respiratory gated volumetric modulated arc therapy (VMAT) for lung stereotactic body radiation therapy (SBRT) under simulation conditions similar to the actual clinical situa…
View article: Evaluation of delivered dose to a moving target by 4D dose reconstruction in gated volumetric modulated arc therapy
Evaluation of delivered dose to a moving target by 4D dose reconstruction in gated volumetric modulated arc therapy Open
The actual delivered dose in thoracic and abdominal VMAT under breathing motion was verified by 4D dose reconstruction using typical treatment equipment and software. The proposed method provides a verification method for the actual delive…
View article: Automated Field-In-Field (FIF) Plan Framework Combining Scripting Application Programming Interface and User-Executed Program for Breast Forward IMRT
Automated Field-In-Field (FIF) Plan Framework Combining Scripting Application Programming Interface and User-Executed Program for Breast Forward IMRT Open
Purpose: To develop an one-click option on treatment planning system that enables for the automated breast FIF planning by combining the Eclipse Scripting application programming interfaces and user-executed programming in Windows. Methods…
View article: Additional file 2: of Stereotactic body radiation therapy using a respiratory-gated volumetric-modulated arc therapy technique for small hepatocellular carcinoma
Additional file 2: of Stereotactic body radiation therapy using a respiratory-gated volumetric-modulated arc therapy technique for small hepatocellular carcinoma Open
Raw data of the treated lesions. Lesion characteristics and follow-up data exists. (XLSX 17Â kb)
View article: Enhanced Photosensitivity in Monolayer MoS2 with PbS Quantum Dots
Enhanced Photosensitivity in Monolayer MoS2 with PbS Quantum Dots Open
Absract Photocurrent enhancement has been investigated in monolayer (1L) MoS 2 with PbS quantum dots (QDs).A metal-semiconductor-metal (Au-1L MoS 2 -Au) junction device is fabricated using a standard photolithography method.Considerably im…
View article: Effect of Transverse Magnetic Field on Build-up Region of 6 MV Photon Beam
Effect of Transverse Magnetic Field on Build-up Region of 6 MV Photon Beam Open
저 강도 자기장을 이용하여 기존의 6 MV 광자선에 대한 선량 상승보다 향상된 선량 변조 방법을 제안하고 이를 실험적으로 선량 효과를 확인하고자 하였다. 0.5 T (Tesla) 강도를 지니는 두 개의 네오디뮴 영구 자석을 광자선에 수직 방향으로 자기장을 인가하였다. 자석과 자석 간의 거리(MMD)와 자석과 물 표면 간의 거리(MSD)에 따라 자기장을 인가한 경우와 인가하지 않은 경우에서의 선량 상승 영역의 선량 변화를 측정…