- MDCT Application of Thoracic Imaging
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Chung MJ
- KMID: 2184795
- J Korean Med Assoc.
- 2007 Jan;50(1):57-64.
- doi: 10.5124/jkma.2007.50.1.57
Multidetector-row computed tomography (MDCT) provides new opportunities and poses challenges for medical imaging to radiologists and physicians. Isotropic imaging (similar resolution in three dimensional directions) allows in-depth views of anatomy... -
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- Gross tumor volume dependency on phase sorting methods of four-dimensional computed tomography images for lung cancer
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Lee SY, Lim S, Ma SY, Yu J
- KMID: 2393558
- Radiat Oncol J.
- 2017 Sep;35(3):274-280.
- doi: 10.3857/roj.2017.00444
PURPOSE: To see the gross tumor volume (GTV) dependency according to the phase selection and reconstruction methods, we measured and analyzed the changes of tumor volume and motion at each... -
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- Efficient approach for determining four-dimensional computed tomography-based internal target volume in stereotactic radiotherapy of lung cancer
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Yeo SG, Kim ES
- KMID: 2051146
- Radiat Oncol J.
- 2013 Dec;31(4):247-251.
- doi: 10.3857/roj.2013.31.4.247
PURPOSE: This study aimed to investigate efficient approaches for determining internal target volume (ITV) from four-dimensional computed tomography (4D CT) images used in stereotactic body radiotherapy (SBRT) for patients with... -
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- Four-Dimensional Thoracic CT in Free-Breathing Children
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Goo HW
- KMID: 2429919
- Korean J Radiol.
- 2019 Jan;20(1):50-57.
- doi: 10.3348/kjr.2018.0325
In pediatric thoracic CT, respiratory motion is generally treated as a motion artifact degrading the image quality. Conversely, respiratory motion in the thorax can be used to answer important clinical... -
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- Analysis of Acquisition Parameters That Caused Artifacts in Four-dimensional (4D) CT Images of Targets Undergoing Regular Motion
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Sheen H, Han Y, Shin E
- KMID: 1910565
- Prog Med Phys.
- 2013 Dec;24(4):243-252.
- doi: 10.14316/pmp.2013.24.4.243
The aim of this study was to clarify the impacts of acquisition parameters on artifacts in four-dimensional computed tomography (4D CT) images, such as the partial volume effect (PVE), partial... -
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- Moderate hypofractionated image-guided thoracic radiotherapy for locally advanced node-positive non-small cell lung cancer patients with very limited lung function: a case report
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Manapov F, Roengvoraphoj O, Li M, Eze C
- KMID: 2386216
- Radiat Oncol J.
- 2017 Jun;35(2):180-184.
- doi: 10.3857/roj.2017.00129
Patients with locally advanced lung cancer and very limited pulmonary function (forced expiratory volume in 1 second [FEV1] ≤ 1 L) have dismal prognosis and undergo palliative treatment or best... -
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- The Clinical Implementation of 2D Dose Distribution QA System for the Patient Specific Respiratory-gated Radiotherapy
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Kim JS, Shin E, Shin JS, Ju SG, Han Y, Park HC, Choi DH
- KMID: 2243931
- Korean J Med Phys.
- 2010 Jun;21(2):127-136.
Emerging technologies such as four-dimensional computed tomography (4D CT) is expected to allow clinicians to accurately model interfractional motion and to quantitatively estimate internal target volumes (ITVs) for radiation therapy... -
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- Benefit of Four-Dimensional Computed Tomography Derived Ejection Fraction of the Left Atrial Appendage to Predict Thromboembolic Risk in the Patients with Valvular Heart Disease
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Kim IC, Chang HJ, Cho IJ, Shim CY, Hong GR, Heo JH, Nam HS, Kim YJ, Choi BW, Chung N
- KMID: 2432135
- Korean Circ J.
- 2019 Feb;49(2):173-180.
- doi: 10.4070/kcj.2018.0152
BACKGROUND AND OBJECTIVES: Decreased left atrial appendage (LAA) emptying velocity in transesophageal echocardiography (TEE) is related with higher incidence of thrombus and increased risk of stroke. Patients with valve disease... -
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- Measurement of Intra-Fraction Displacement of the Mediastinal Metastatic Lymph Nodes Using Four-Dimensional CT in Non-Small Cell Lung Cancer
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Wang S, Li J, Zhang Y, Wang W, Li F, Fan T, Xu M, Shao Q
- KMID: 1383853
- Korean J Radiol.
- 2012 Aug;13(4):417-424.
- doi: 10.3348/kjr.2012.13.4.417
OBJECTIVE: To measure the intra-fraction displacements of the mediastinal metastatic lymph nodes by using four-dimensional CT (4D-CT) in non-small cell lung cancer (NSCLC). MATERIALS AND METHODS: Twenty-four patients with NSCLC, who... -
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- 4D CT for Stereotactic Radiosurgery of Lung Cancer : A case report
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Park SH, Song SY, Choi EK, Kim JH, Ahn SD, Shin SS, Lee SW
- KMID: 1895271
- J Lung Cancer.
- 2005 Jun;4(1):51-52.
For Stereotactic Radiosurgery of lung tumor, 4 dimensional CT was done during for free breathing of the patient. The movement of the treated target was measured in the CT images,... -
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- Assessment of Respiratory Tumor Movement using 4D Computed Tomography for Stereotactic Radiosurgery in Lung Tumor
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Song SY, Park SH, Yoon SM, Kim YS, Kim JH, Ahn SD, Shin SS, Lee SW, Park CI, Choi EK
- KMID: 2200112
- J Lung Cancer.
- 2007 Jun;6(1):24-28.
- doi: 10.6058/jlc.2007.6.1.24
PURPOSE : To assess the respiratory tumor movement using 4D-CT (4-dimensional computed tomography) for minimizing setup and target volume uncertainty of body-frame based stereotactic radiosurgery (SRS) in lung tumor. MATERIALS... -
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- Evaluating Correlation between Geometrical Relationship and Dose Difference Caused by Respiratory Motion Using Statistical Analysis
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Shin DS, Kang SH, Kim DS, Kim TH, Kim KH, Cho MS, Noh YY, Yoon DK, Suh TS
- KMID: 2376553
- Prog Med Phys.
- 2016 Dec;27(4):203-212.
- doi: 10.14316/pmp.2016.27.4.203
Dose differences between three-dimensional (3D) and four-dimensional (4D) doses could be varied according to the geometrical relationship between a planning target volume (PTV) and an organ at risk (OAR). The... -
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- Analysis of the Imaging Dose for IGRT/Gated Treatments
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Shin JS, Han Y, Ju SG, Shin E, Hong CS, Ahn YC
- KMID: 2003444
- J Korean Soc Ther Radiol Oncol.
- 2009 Mar;27(1):42-48.
- doi: 10.3857/jkstro.2009.27.1.42
PURPOSE: The introduction of image guided radiation therapy/four-dimensional radiation therapy (IGRT/4DRT) potentially increases the accumulated dose to patients from imaging and verification processes as compared to conventional practice. It is... -
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- Analysis on the Decrease of Planning Target Volume in the Case of Lung Radiation Surgery with the Application of Respiratory Gated Radiotherpy Method
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Song JY, Nah BS, Chung WK, Ahn SJ, Nam TK, Yoon MS, Jung JU
- KMID: 2243968
- Korean J Med Phys.
- 2008 Dec;19(4):263-268.
The application of a respiratory gated radiotherpy method to the lung radiation surgery was evaluated compared with the conventional method in which the whole tumor motion range is considered in... -
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- Changing Trends in Preoperative Localization and Surgical Techniques for the Treatment of Primary Hyperparathyroidism in a Single Tertiary Center
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Lee J, Kim SJ, Yu HW, Chai YJ, Choi JY, Lee KE
- KMID: 2466238
- J Endocr Surg.
- 2019 Dec;19(4):126-135.
- doi: 10.16956/jes.2019.19.4.126
PURPOSE: Primary hyperparathyroidism (PHPT) is caused by the oversecretion of parathyroid hormone (PTH), resulting in increased serum calcium levels. The aim of this study was to analyze changing trends in... -
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- Four-Dimensional CT of the Diaphragm in Children: Initial Experience
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Goo HW
- KMID: 2425116
- Korean J Radiol.
- 2018 Feb;19(1):111-118.
- doi: 10.3348/kjr.2018.19.1.111
OBJECTIVE: To evaluate the technical feasibility of four-dimensional (4D) CT for the functional evaluation of the pediatric diaphragm. MATERIALS AND METHODS: In 22 consecutive children (median age 3.5 months, age range... -
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- The Dose and Risk Reduction from Adoption of Automatic mA Control in 4D CT Scans
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Ko YE, Je HU, Hwang Y, Park SH
- KMID: 2151761
- Prog Med Phys.
- 2015 Dec;26(4):267-272.
- doi: 10.14316/pmp.2015.26.4.267
In this study, the reduction of dose and risk was evaluated from using automatic mA control in 4D CT scan of patients whose organ movement was considered for gated radiotherapy.... -
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- Impact of the Respiratory Motion and Longitudinal Profile on Helical Tomotherapy
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Park SH, Choi J, Kim J, Ahn S, Kim MJ, Lee H, Choi SH, Park K
- KMID: 2411947
- Prog Med Phys.
- 2018 Mar;29(1):1-7.
- doi: 10.14316/pmp.2018.29.1.1
The TomoTherapy® beam-delivery method creates helical beam-junctioning patterns in the dose distribution within the target. In addition, the dose discrepancy results in the particular region where the resonance by pattern... -
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- Comparison of Three- and Four-dimensional Robotic Radiotherapy Treatment Plans for Lung Cancers
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Chai GY, Lim YK, Kang KM, Jeong BG, Ha IB, Park KB, Jung JM, Kim D
- KMID: 1460142
- J Korean Soc Ther Radiol Oncol.
- 2010 Dec;28(4):238-248.
- doi: 10.3857/jkstro.2010.28.4.238
PURPOSE: To compare the dose distributions between three-dimensional (3D) and four-dimensional (4D) radiation treatment plans calculated by Ray-tracing or the Monte Carlo algorithm, and to highlight the difference of dose... -
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- Development of Respiratory Signal Analysis Program for Accurate Phase Reassignment in 4D CT Reconstruction
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Park HJ, Jung WG, Yoon JW, Song JY, Suh TS
- KMID: 2243965
- Korean J Med Phys.
- 2008 Dec;19(4):241-246.
Patient's respiration can have an effect on movement of tumor range and peripheral organs. Therefore, the respiratory signal was acquired by relation between external markers and movement of patient's abdomen... -
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