The quality of adaptive treatment planning depends on the accuracy of its underlying deformable image registration (DIR). The purpose of this study is to evaluate the performance of two DIR algorithms, B-spline-based deformable multipass (DMP) and deformable demons (Demons), implemented in a commercial software package. Evaluations were conducted using both computational and physical deformable...

The development of methods for correcting patient motion in emission tomography has been receiving increased attention. Often the performance of these methods is evaluated through simulations using digital anthropomorphic phantoms, such as the commonly used extended cardiac torso (XCAT) phantom, which models both respiratory and cardiac motion based on human studies. However, non-rigid body mot...

Purpose The use of three-dimensional (3D) printing to develop custom phantoms for dosimetric studies in radiotherapy is increasing. process allows production designed evaluated specific geometries, patients, or patient groups with a defining feature. ability print bone-equivalent has, however, proved challenging. purpose this work was 3D series three similar spine containing no surgical implant...

Introduction: In recent years, there has been increasing demand for personalized anatomy modeling for medical applications, because the influence of phantoms on the quality of treatments and precision dosimetry has been specified. Phantoms have many applications on medical such as treatment planning, diagnostic imaging, clinical radiological exposure simulation, and biomechanic...

background: electronic portal imaging devices (epids) play an important role in radiation therapy portal imaging, geometric and dosimetric verifications. a successful utilization of epids for imaging and dosimetric purposes requires a reliable quality control process routine to be carried out regularly. in this study, two in-house phantoms were developed and analyzed for implementation in a qua...

Abstract Phantoms are commonly used throughout medical imaging and physics for a multitude of applications, the designs which vary between modalities clinical or research requirements. Within positron emission tomography (PET) nuclear medicine, phantoms have well-established role in validation protocols so as to reduce administration radioisotope volunteers. Similarly, within magnetic resonance...

In this letter, a microwave imaging strategy based on an artificial neural network (ANN) is applied, for the first time, to experimental data gathered from simplified neck phantoms. The ANN used solving underlying inverse scattering problem, with aim of retrieving dielectric properties monitoring and diagnostic purposes. trained using simulated phantoms, overcome limited availability data. Firs...

Wall shear stress (WSS) plays an important role in the formation, growth, and rupture of atherosclerotic plaques arteries. This study measured WSS diseased carotid artery phantoms with degrees stenosis varying from 0 to 60% both steady pulsatile flow. Experiments were performed using silico real flow phantoms. Blood velocities estimated plane wave (PW) vector Doppler. was then velocity gradient...

PURPOSE The goal of this work was to develop phantoms for the optimization of pre-operative computed tomography (CT) scans of the prostate artery, which are used for embolization planning. METHODS Acrylonitrile butadiene styrene (ABS) pellets were doped with barium sulfate and extruded into filaments suitable for 3D printing on a fused deposition modeling (FDM) printer. Cylinder phantoms were...