نتایج جستجو برای: based phantom

تعداد نتایج: 2946802  

Journal: :Journal of Physics: Conference Series 2021

Journal: :iranian journal of child neurology 0
mahtab poor zamany nejat kermany 1. anesthesiology and critical care deprtment, labbafinejad hospital, medical university of shahid beheshti, tehran, iran ehsan modirian 2. emergency medicine department, boali hospital, qazvin university of medical sciences, qazvin, iran mohammadreza soroush 3. janbazan medical and engineering research center (jmerc), tehran, iran mahdi masoumi 3. janbazan medical and engineering research center (jmerc), tehran, iran maryam hosseini 3. janbazan medical and engineering research center (jmerc), tehran, iran

how to cite this article: poor zamany nejat kermany m, modirian e, soroush m, masoumi m, hosseini m. phantom limb sensation (pls) and phantom limb pain (plp) among young landmine amputees. iran j child neurol. summer 2016; 10(3):42-47.   abstract objective to determine the frequency of phantom limb sensation (pls) and phantom limb pain (plp) in children and young adults suffering landmine-relat...

H.K. Lee, J.H. Cho, J.W. Hong,

Background: This study assessed the clinical usefulness of the solid phantom, which may compensate for the disadvantages of the water phantom, by comparing the radiological doses between the two depending on their depths. Materials and Methods: The experimental equipment used was a linear accelerator for medical use, water phantom, solid phantom, Farmer type ion chamber and electrometer. The di...

Journal: :Medical physics 2012
J Deng

PURPOSE To develop a realistic yet flexible 4D digital phantom based on patient anatomy for dynamic estimation of organ doses due to external ionizing radiation. METHODS In this work, we propose to build a 4D digital phantom based on patient CT anatomy and time-tagged CT information. A regional 4D-CT is first acquired on the patient around lesion with a RPM system. By binning CT information a...

Journal: :iranian journal of medical physics 0
alireza vejdani-noghreiyan physics department, faculty of sciences, university of neyshabur, neyshabur, iran, atiyeh ebrahimi-khankook physics department, faculty of sciences, university of neyshabur, neyshabur, iran,

introduction accurate estimation of the absorbed dose in radiosensitive organs, located away from the target volume during radiotherapy, is one of the main reasons for the development of reference phantoms. the international commission on radiological protection (icrp) reference phantoms can provide a more realistic view of the human anatomy in comparison with the previously used mathematical p...

Journal: :asia oceania journal of nuclear medicine and biology 0
yasuyuki takahashi department of radiology, gunma prefectural college of health sciences, maebashi, japan mizuki mochiki department of ragiological technology, gunma cardiovascular center, maebashi, japan keiko koyama department of diagnostic radiology and nuclear medicine, gunma cardiovascular center, maebashi, japan toshihiko ino department of ragiological technology, gunma cardiovascular center, maebashi, japan hiroyuki yamaji department of ragiological technology, national kyusyu medical center, fukuoka, japan atsuko kawakami department of ragiological technology, red cross maebashi hospital, maebashi, japan

objective(s): use of a positron emission tomography (pet)/single-photonemission computed tomography (spect) system facilitates the simultaneousacquisition of images with fluorine-18 fluorodeoxyglucose (18f-fdg) andtechnetium (99mtc)-tetrofosmin. however, 18f has a short half-life, and 511kev compton-scattered photons are detected in the 99mtc energy window.therefore, in this study, we aimed to ...

Journal: :iranian journal of radiation research 0
h. nan department of biomedical engineering, school of bioengineering, chongqing university, chongqing 400030, china s. jinlu department of radiation oncology, chongqing daping hospital, chongqing, 400042, china z. shaoxiang department of anatomy, institution of digital medicine, tmmu, chongqing 400038, china h. qing institute of nuclear science and technology, sichuan university, chengdu 610064, china t. li-wen department of anatomy, institution of digital medicine, tmmu, chongqing 400038, china g. chengjun institute of nuclear science and technology, sichuan university, chengdu 610064, china

background: accurate voxel phantom is needed for dosimetric simulation in radiation therapy for malignant tumors in female pelvic region. however, most of the existing voxel phantoms are constructed on the basis of caucasian or non-chinese population. materials and methods: a computational framework for constructing female pelvic voxel phantom for radiation dosimetry was performed based on chin...

2008
A. Isambert G. Bonniaud F. Lavielle G. Malandain D. Lefkopoulos

Purpose. – The aim of the present study was to quantitatively assess the performance of a block matching-based automatic registration algorithm integrated within the commercial treatment planning system designated ISOgrayTM from Dosisoft. The accuracy of the process was evaluated by a phantom study on computed tomography (CT), magnetic resonance (MR) and positron emission tomography (PET) image...

2017
Min-Joo Kim Seu-Ran Lee Min-Young Lee Jason W Sohn Hyong Geon Yun Joon Yong Choi Sang Won Jeon Tae Suk Suh

Development and comparison of spine-shaped phantoms generated by two different 3D-printing technologies, digital light processing (DLP) and Polyjet has been purposed to utilize in patient-specific quality assurance (QA) of stereotactic body radiation treatment. The developed 3D-printed spine QA phantom consisted of an acrylic body phantom and a 3D-printed spine shaped object. DLP and Polyjet 3D...

G. Chengjun, H. Nan, H. Qing, S. Jinlu, S.B. Jiang, T. Li-wen, X. Tang, Z. Shaoxiang, Z. Xiao-lin,

Background: Accurate voxel phantom is needed for dosimetric simulation in radiation therapy for malignant tumors in female pelvic region. However, most of the existing voxel phantoms are constructed on the basis of Caucasian or non-Chinese population. Materials and Methods: A computational framework for constructing female pelvic voxel phantom for radiation dosimetry was performed base...

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