Organ dose modulation 放射線

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August undefined, 2024

WitrynaPurpose: Organ-based tube current modulation (OB-TCM) techniques, which are provided by three vendors, reduces the radiation dose to the lens of the eyes by … Witryna1 sty 2024 · The purpose of this study was to evaluate the effectiveness of organ effect modulation (OEM) in reducing the lens dose in 4D computed tomography (CT) of the head in volume-acquisition (NVA) mode.

(PDF) An evaluation of organ dose modulation on a GE optima …

Witryna28 kwi 2024 · For dose measurements, organ doses were evaluated using radio-photoluminescence glass dosemeters located at various organ positions within the phantom. Relative differences between the simulated and measured organ doses were -2.5 to 11.0% and -1.5 to 10.5% for organs in chest and abdomen-pelvis CT scan … Witryna20 maj 2024 · Objectives To investigate the effect of an organ-based tube current modulation (OTCM) technique on organ absorbed dose and assess image quality in pediatric CT examinations. Methods Four physical anthropomorphic phantoms that represent the average individual as neonate, 1-year-old, 5-year-old, and 10-year-old … tabique lijero

Evaluation of exposure dose in fetal computed tomography using …

Witryna28 paź 2024 · Background and objective To study the radiation dose and image quality on the use of full-field organ dose modulation (ODM) on cervical-thoracic-abdominal … Organ Dose Modulation or ODM (GE Healthcare, Milwaukee, WI) was evaluated to characterize changes in , image noise, effective dose, and organ dose saving to patients.Three separate investigations were completed: a tube current modulation phantom was scanned with and without ODM, a phantom was scanned with ODM, and Monte Carlo simulations were performed. ta biographie

The influence of ODM technique on the radiation dose received …

日本赤十字社診療放射線技師会

WitrynaJSMPの起点は、1961年3月に日本医学放射線学会（日医放）傘下の「物理専門部会」になったことに起因する。 ... Modulation transfer function measurement of CT images by use of a circular edge method with a logistic curve-fitting technique. 8, 53–59(2015) ... Monte Carlo calculation of patient organ doses ... Witryna24 cze 2016 · For dose measurements, organ doses were evaluated using radio-photoluminescence glass dosemeters located at various organ positions within the phantom. Relative differences between the simulated and measured organ doses were −2.5 to 11.0% and −1.5 to 10.5% for organs in chest and abdomen–pelvis CT scan … basikal airWitryna1 wrz 2008 · Radiation exposure to the patient has become a concern for the radiologist in the multidetector computed tomography (CT) era. With the introduction of faster … basikal belakang ada tempat pemijak

"Witryna日本放射線技術学会(JSRT)は，放射線技術学に関する教育・研究を推進し，学術の進歩発展に寄与し，公益社団法人として健康と福祉に貢献することを目指す学術団体で … " - Organ dose modulation 放射線

Organ dose modulation 放射線

Organ Dose Evaluations Based on Monte Carlo Simulation for CT …

Witryna1 lut 2024 · Organ-based tube current modulation (OBTCM) is a technique designed for anterior dose reduction, potentially reducing radiation dose to radiosensitive organs such as the breasts and eye lens in computed tomography (CT). The major vendors have specific solutions, and all systems decrease the tube current when the tube is within a … Witryna1 wrz 2008 · Radiation exposure to the patient has become a concern for the radiologist in the multidetector computed tomography (CT) era. With the introduction of faster multidetector CT scanners, various techniques have been developed to reduce the radiation dose to the patient; one method is automatic exposure control (AEC). AEC …

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WitrynaObjective: The purpose of this study was to assess the radiation dose distribution and image quality for organ-based dose modulation during adult thoracic MDCT. Materials and methods: Organ doses were measured using an anthropomorphic adult female phantom containing 30 metal oxide semiconductor field-effect transistor detectors on … Witryna8 maj 2016 · Abstract. Organ Dose Modulation or ODM (GE Healthcare, Milwaukee, WI) was evaluated to characterize changes in CTDIvol, image noise, effective dose, …

Witryna22 lut 2024 · 藤田医科大学の放射線学科における小林研究室の紹介です。医療放射線防護・計測分野の研究、放射線技術の教育教材の開発に興味がある方は藤田医科大学 … WitrynaA validated MC dosimetry package was used to perform detailed simulation of CT examinations on all 332 patient models to estimate dose to each segmented organ (lungs, breasts, liver, spleen, and kidneys), denoted as reference organ dose values. Approximately 60% of the data were used to train a dose estimation model, while the …

Witryna1 gru 2024 · Dose constraints are essential for performing dosimetry, especially for intensity modulation and for radiotherapy under stereotaxic conditions. We present … Witrynaを使用することにより放射線感受性の高い臓器への被ばく線量を低減することが可能となり、より被ばく線量の低い有益な検査が行えると考える。参考文献. 1. Organ …

Witryna20 maj 2024 · Objectives To investigate the effect of an organ-based tube current modulation (OTCM) technique on organ absorbed dose and assess image quality in …

http://www.fujita-hu.ac.jp/~masa1121/works.html basikal budak 4 tahunWitrynaOncology imaging: organ-based dose modulation and iterative reconstruction techniques CT is the examination of choice for detecting or evaluating liver lesions. This diagnostic task can pose challenges due to low contrast of the lesions.[2] Another feature of the iPatient approach to help basikalWitrynaThere was a 17–47% decrease (p = < 0.05) in anterior thoracic organ dose and a maximum 52% increase (p = < 0.05) in posterior thoracic organ dose using organ … basikal bmxWitrynaObjective: To investigate the differences in imaging quality and radiation dose in CT pulmonary angiography (CTPA) by organ dose modulation and 3D Smart mA modulation in different body mass indices (BMIs) with an adaptive statistical iterative reconstruction (ASiR-V) algorithm. Methods: Three hundred female patients who … basika cannes la boccaWitrynaX-CARE（シーメンス），Organ Dose Modulation（GE），Active Collimator（東芝），etc 1．低被ばくCTの性能評価辻岡勝美藤田保健衛生大学医療科学部放射線学 … basikal bmx yang bagusWitryna日本赤十字社診療放射線技師会 basikal alor setarWitryna4 cze 2015 · Purpose To develop a methodology that allows direct measurement of organ doses from computed tomographic (CT) examinations of postmortem subjects. Materials and Methods In this institutional review board approved study, the x-ray linear attenuation coefficients of various tissues were calculated from the mean CT numbers … tabira hoje morte