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Item Metadata only Risk estimation of radiation induced second cancers for three dimensional conformal radiotherapy (3D-CRT) and intensity modulated radiotherapy (IMRT)(Mahidol University. Mahidol University Library and Knowledge Center, 2009) Siwaporn Sakulsingharoj; Vipa Boonkitticharoen; Chirapha Tannanonta; Chumpot Kakanaporn; Porntip Iampongpaiboon(3D-CRT) or intensity modulated radiotherapy (IMRT) technique. Both 3D-CRT and IMRT plans were optimized for each of the 10 patients using Eclipse Radiation Therapy Planning System (RTPS), from which the differential dose volume histograms (dItem Metadata only Optimized radiation dose and image quality for abdominal CT protocol : phantom study(Mahidol University. Mahidol University Library and Knowledge Center, 2018) Saimai Siangyai; Malulee Tuntawiroon; Dittapong SongsaengThis study aims to determine the appropriate radiation dose to achieve an acceptable image quality of an abdominal body phantom when varying the Noise Index in the routine abdominal CT scan protocol at Siriraj Diagnostic Imaging Center, using 2 CT... systems, GE Medical System, Model VCT Light Speed and Model HD750. The radiation Noise Index of CT images was measured on standard, large and very large size phantoms. Radiation doses were recorded using fix mode (500 mA) and auto modulation (Noise Index 0Item Metadata only Qualitative and quantitative evaluation of yttrium-90 positron emission tomography imaging(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Thamonwan Thareeboonchai; Krisanat Chuamsaamarkkee; Putthiporn CharoenphunSelective internal radiation therapy (SIRT) is a treatment option to treat inoperable hepatocellular carcinoma (HCC). SIRT is the technique that delivers radiopharmaceutical, Yttrium-90 (90Y) microsphere to target lesion by angiographic intervention...รังสีร่วมรักษาโดยการนำรังสีเข้าสู่ร่างกายเฉพาะจุด (selective internal radiation therapy, SIRT) เป็นวิธีการรักษาโรคมะเร็งตับที่ไม่สามารถผ่าตัดได้ โดยวิธีการ SIRT จะเป็นการนำสารเภสัชรังสี 90Y-microsphere เข้าสู่ก้อนมะเร็งโดยใช้เทคนิครังสีร่วมรักษาระบบPublication Open Access An Overview of CyberKnife Robotic Radiosurgery(2009) Putipun Puataweepong; พุฒิพรรณ พัวทวีพงศ์; Mahidol University. Faculty of Medicine Ramathibodi Hospital. Department of Diagnostic and Therapeutic Radiologytargets using a very accurate Image-to-Image correlation algorithm, and precisely cross-fires high-energy radiation from a lightweight linear accelerator by means of a highly manipulable robotic arm, Cyberknife radiosurgery is an effective alternative... to conventional surgery or radiation therapy for a range of tumors and some non-neoplastic disorders. This report will describe Cyberknife technology and oncologic applications in neurosurgery and throughout the body.Item Metadata only Comparative risk assessment of radiation induced second cancers in patient with prostate cancer after intensity modulated radiation therapy and stereotactic body radiation therapy(Mahidol University. Mahidol University Library and Knowledge Center, 2016) Sawanee Suntiwong; Mantana Dhanachai; Chomporn Sitathanee; Vipa Boonkitticharoenconformal radiation therapy (3D-CRT). The SPC risks expressed as excess absolute risk (EAR) were determined for organs in or near the treatment fields, out-of-field and those involved in the image-guided procedures. Organ equivalent dose (OED) using a...; 6-MV photon with 184-289 beam orientations for CK-SBRT plan was delivered in 5 fractions of 7.25 Gy. An image-guided dose and scatter/leakage radiation for each treatment plan were measured using an Alderson radiotherapy (ART) phantomItem Metadata only MRI-guided biopsy reduces biochemical recurrence in prostate cancer patients undergoing radiation therapy: a single-center study from Thailand(2025-12-01) Mahamongkol K.; Teyateeti A.; Woranisarakul V.; Srinualnad S.; Hansomwong T.; Mahamongkol K.; Mahidol UniversityAccurate diagnosis of significant prostate cancer (PCa) is essential for effective treatment. Multiparametric magnetic resonance imaging (mpMRI) is increasingly used for lesion detection and biopsy guidance, but its impact on outcomes following... radiotherapy remains uncertain. This study assesses the effect of MRI-guided biopsy on biochemical recurrence (BCR) following definitive external beam radiotherapy (EBRT). This single-center, retrospective review included 102 patients with localized PCa whoItem Metadata only Dose accumulation of volumetric modulated arc radiation therapy for prostate cancer using deformable image registration(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Achawee Suwannarat; Lalida Tuntipumiamorn; Pittaya Dankulchai; Nuanpen Damrongkijudomfor adaptive radiation therapy and as to be the dose monitoring system. The aim of this work is to study the proper procedure of using CBCT images and Velocity AI 3.2.0 deformable image registration (DIR) software in predicting the accumulated dose... and -4.80 cc for Dmean and V70Gy of bladder, and -1.37 Gy, and -1.74 cc for Dmean and V70Gy of rectum, respectively. In conclusion, the accumulation dose using CBCT image and DIR to guide organ contouring is found to be feasible and adequate to predictItem Metadata only Halogenated BOIMPYs and Their Efficiency in Photodynamic Therapy(2024-01-01) Saiyasombat W.; Muangsopa P.; Khrootkaew T.; Chansaenpak K.; Pinyou P.; Sapermsap N.; Sangtawesin S.; Kamkaew A.; Saiyasombat W.; Mahidol UniversityBOIMPY (bis- (borondifluoride)-8-imidazodipyrromethene) photosensitizers were developed for imaging-guided photodynamic therapy (PDT). The introduction of heavy atoms (Br and I) to the β-positions of BOIMPY combined with the twisted structure... radiation. The half-maximal inhibitory concentrations for the iodinated and brominated BOIMPYs were 2.14 μM and 14.78 μM, respectively. Consequently, iodinated BOIMPY has been shown to represent a new class of photosensitizers with potential use in imagingItem Metadata only Evaluation of the offset couch parameter between kilovoltage on-board imaging and cone-beam computed tomography in patients with prostate cancer(2024-05-01) Guawgumnerdtong T.; Damrongkijudom N.; Suwanarat A.; Chailapakul P.; Ekjeen T.; Guawgumnerdtong T.; Mahidol UniversityBackground: External Beam Radiation Therapy (EBRT) is a curative therapy technique for prostate cancer. Since the prostate is unstable and surrounded by the bladder and rectum, precision of the target location is critical. Image Guided Radiation... Therapy (IGRT) can improve treatment precision. The bladder and rectum may alter volume during IGRT, shifting the prostate’s position and resulting in missed target volume doses and extra organs at risk (OARs) doses. Objective: To assess setup errorPublication Metadata only Preliminary survey of 3D image-guided brachytherapy for cervical cancer at representative hospitals in Asian countries(2020-07-06) Noriyuki Okonogi; Masaru Wakatsuki; Hideyuki Mizuno; Shigekazu Fukuda; Jianping Cao; Henry Kodrat; Fen Nee Lau; Miriam Joy Calaguas; Rey H. de Los Reyes; Yaowalak Chansilpa; A. F.M.Kamal Uddin; Tasbolat Adylkhanov; Chul Koo Cho; Uranchimeg Tsegmed; Nguyen Cong Hoang; Tatsuya Ohno; Takashi Nakano; Shingo Kato; Saitama Medical University International Medical Center; Graduate School of Medicine; National Institutes for Quantum and Radiological Science and Technology; QST Hospital; Jichi Medical University; Semey Medical University; St. Luke's Medical Center Quezon City; Jose R. Reyes Memorial Medical Center; University of Indonesia, RSUPN Dr. Cipto Mangunkusumo; Korea Institute of Radiological and Medical Sciences; Faculty of Medicine, Siriraj Hospital, Mahidol University; Soochow University; National Cancer Council of Mongolia; Institut Kanser Negara; United Hospital Limited; National Cancer Hospital© The Author(s) 2020. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology. 3D image-guided brachytherapy (3D-IGBT) has become a standard therapy for cervical cancer... tomography (CT)-based and not magnetic resonance image-based. The median doses to the high-risk clinical target volume D90, bladder D2cc, rectum D2cc and sigmoid colon D2cc were 80.9 Gy EQD2 (range, 58.9-105.9), 77.7 Gy EQD2 (range, 56.9-99.1), 68.0 Gy EQD2
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