Dual energy ct radiotherapy

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August undefined, 2024

WebFeb 6, 2024 · Range uncertainty has been a key factor preventing particle radiotherapy from reaching its full physical potential. One of the main contributing sources is the … WebRecent years witnessed an increasing number of dual-energy CT/spectral CT scanners installed and implemented in radiation oncology department. Dual-energy CT/spectral CT can provide material specific information by processing projection datasets of two or more different X-ray energy spectra, as well as synthesize virtual monoenergetic images with …

Comparison between Dual-Energy CT and Quantitative …

WebNov 7, 2024 · Almeida IP, Schyns LEJR, Vaniqui A, et al. Monte Carlo proton dose calculations using a radiotherapy specific dual‐energy CT scanner for tissue segmentation and range assessment. Phys Med Biol. 2024; 63 (11):115008. 10.1088/1361-6560/aabb60. [Google Scholar] 55. Han D, Siebers JV, Williamson JF. ... WebNov 21, 2024 · To investigate the feasibility of using dual-energy CT (DECT) for tissue segmentation and kilovolt (kV) dose calculations in pre-clinical studies and assess potential dose calculation accuracy gain. Two phantoms and an ex-vivo mouse were scanned in a small animal irradiator with two distinct energies. Tissue segmentation was performed … reinmuth gauting

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WebOct 1, 2024 · Objectives: This work aims to investigate whether virtual non-contrast (VNC) dual-energy CT(DECT) of contrasted lung tumours can be used as an alternative for true non-contrast (TNC) images in radiotherapy. Two DECT techniques and a TNC CT were compared and influences on gross tumour volume (GTV) volume and CT number from … WebJan 8, 2024 · At the beginning of the clinical application of dual-energy CT, the radiation dose associated with the modality was a concern, with substantially increased radiation exposure compared with that from single-energy CT . After optimization of the technology, including newer iterative reconstruction techniques, improved detector efficiency, and ... WebMar 9, 2024 · The clinical practice, adaptation and techniques of dual-energy CT is broken into individual articles: virtual non-contrast imaging. vascular. automated bone removal in … prodigy disc street team

Improving radiation physics, tumor visualisation, and treatment ...

Dual energy CT in radiotherapy: Current applications and …

WebVirtual monochromatic imaging in dual-source dual-energy CT: radiation dose and image quality. Med Phys 2011; 38:6371–6379 [Google Scholar] 20. Maass C, Meyer E, Kachelriess M. Exact dual energy material decomposition from inconsistent rays (MDIR). Med Phys 2011; 38:691–700 [Google Scholar] WebFeb 24, 2024 · Dual energy CT(DECT) refers to the acquisition of CT images at 2 or more energy spectra and can provide information about tissue composition beyond that obtainable by conventional CT. ... Dose reduction is especially relevant in coronary CT angiography where it has been shown that radiation dose associated with dual energy … rein motor mountsWebApr 1, 2024 · BACKGROUND AND PURPOSE: Both dual-energy CT and quantitative susceptibility mapping can evaluate iron depositions in the brain. The purpose of this study was to compare these 2 techniques in evaluating brain iron depositions in Parkinson disease. MATERIALS AND METHODS: Forty-one patients with Parkinson disease … prodigy discs sponsor

"WebApr 14, 2024 · The phantom was scanned with a dual-layer spectral detector dual energy CT (IQon Spectral CT, Philips Healthcare, Amsterdam, Netherlands) at two different tube voltages (120, 140 kVp) and two ... " - Dual energy ct radiotherapy

Dual energy ct radiotherapy

Radiotherapy treatment planning with contrast-enhanced …

WebApr 12, 2024 · Some DECT scanners use slightly higher radiation as compared to others. Though with the recent computerized dose-saving in-built techniques in the most scanning unit, the risk of radiation exposure has considerably reduced. ... Dual-energy CT scan is an emerging horizon in medical imaging. Properly understanding its principle and usage can ... WebJul 30, 2024 · Technical Principles of Dual-Energy Cone Beam Computed Tomography and Clinical Applications for Radiation Therapy Adv Radiat Oncol. 2024 Jul 30;5(1) :1-16. doi …

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WebNov 7, 2024 · Over the past decade, spectral or dual-energy CT has gained relevancy, especially in oncological radiology. Nonetheless, its use in the radiotherapy (RT) clinic …

WebRadiotherapy with protons or light ions can offer accurate and precise treatment delivery. Accurate knowledge of the stopping power ratio (SPR) distribution of the tissues in the … Web23 hours ago · Cone-beam CT (CBCT) with flat image detectors was first demonstrated in 2000. 1 The technique is widely used in interventional radiology procedures for anatomic and pathology assessment. 2 ⇓ ⇓-5 In patients with stroke, IV CBCT angiography (CBCTA) in the angiography suite could be an alternative to CTA to shorten the door-to …

WebJan 1, 2024 · Objective: Dual energy CT (DECT) has been shown to estimate stopping power ratio (SPR) map with a higher accuracy than conventional single energy CT … WebAbstract. Background: Dual-energy (DE) diagnostic computed tomography (CT) combines two scans of different photon energy spectra which can provide additional image information as compared to standard CT. We developed a DE material decomposition scan protocol for daily cone-beam CT (CBCT) of head-and-neck patients receiving radiotherapy and …

WebJul 29, 2014 · Dual-energy virtual unenhanced CT improves the accuracy of dose distributions in radiotherapy treatment planning by removing the iodine component from contrast-enhanced images. In radiotherapy treatment planning, intravenous administration of an iodine-based contrast agent during computed tomography (CT) improves the …

WebDual Source CT Imaging - Jun 04 2024 This book provides an introduction to Dual Source Computed Tomography (DSCT) technology and to the ... Radiation exposure, dual-energy imaging, contrast enhancement, image postprocessing, CT perfusion imaging, and CT angiography all receive close attention. The new edition has been comprehensively … prodigy discs teamWebJan 19, 2011 · The technique of multi-energy CT differs from that of dual-energy CT in that it uses the attenuation characteristics at more than two energies (i.e. multiple energies) and within narrow energy ranges [ 3 – 5 ]. The X-ray tube is typically operated at a single tube voltage to produce a broad spectrum of photon energies. reinmuth honigWebApr 29, 2016 · Dual energy CT imaging: technology and physics Imaging equipment for dual-energy CT imaging • Scanning techniques: rotate-rotate, dual source-dual … reinmuth insuranceWebMar 22, 2024 · Dual-energy computed tomography (DECT) can be used for various types of analyses, including iodine quantification, and its usefulness in diagnosing gastrointestinal diseases has been reported. ... The omission of pre-contrast CT can reduce radiation exposure by approximately 30%. A low-keV virtual monochromatic X-ray image (VMI) … prodigy dnd 5e featWebApr 12, 2024 · Some DECT scanners use slightly higher radiation as compared to others. Though with the recent computerized dose-saving in-built techniques in the most … reinmuthWebSep 2, 2024 · Dual-energy quality control (DEQC) analysis of the dual-energy computed tomography (DECT) phantom for 70 keV monoenergetic synthetic images based on … rein motor mounts 997 carerraWebRecent years witnessed an increasing number of dual-energy CT/spectral CT scanners installed and implemented in radiation oncology department. Dual-energy CT/spectral … prodigy dnd feat