Ahmed Toaha Mobashsher

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A portable microwave system to detect traumatic brain injuries is described. The wideband system utilizes a unidirectional antenna, microwave transceiver, and processing and image reconstruction algorithms. The utilized antenna is designed to have a compact three-dimensional (3-D) structure using a slotted dipole element and a folded parasitic structure. It(More)
An intracranial haemorrhage is a life threatening medical emergency, yet only a fraction of the patients receive treatment in time, primarily due to the transport delay in accessing diagnostic equipment in hospitals such as Magnetic Resonance Imaging or Computed Tomography. A mono-static microwave head imaging system that can be carried in an ambulance for(More)
Worldwide, brain stroke is the leading cause of disability among adult. Present imaging systems do not offer a low cost and portable solution for the stroke diagnosis. Microwave imaging systems have the potential to provide that solution and substitute, or complement, existing systems. To achieve that target, a wideband antenna operating at the band used(More)
Stroke is the second leading cause of death worldwide. The treatment depends on the location and extent of stroke and it should be started within 4.5 hours of the attack. Thus rapid detection is a must. Existing imaging systems do not provide a solution to monitor the patient in real time and not portable, thus requires patient's movement. Addressing these(More)
Intracranial hemorrhage is a medical emergency that requires rapid detection and medication to restrict any brain damage to minimal. Here, an effective wideband microwave head imaging system for on-the-spot detection of intracranial hemorrhage is presented. The operation of the system relies on the dielectric contrast between healthy brain tissues and a(More)
Worldwide, stroke is the leading cause of adult disability. Stroke occurs when the blood supply in a part of brain is disturbed as a blood vessel bursts or is blocked by a clot. Delayed or wrong medical analysis can be fatal for the stroke affected patient. In this paper, a compact antenna is proposed for the brain stroke detection system. The antenna(More)
A multistatic microwave imaging technique is presented for fast diagnosis of medical emergencies pertaining to brain injuries. The frequency-based imaging method utilizes Bessel functions to estimate the scattered power intensity inside the imaged region from measured multistatic scattered signals outside the imaged region in a quasi-real-time manner. A(More)
Brain Stroke is the leading cause of disability and death in the world in which the supply of blood to the brain is stopped by a clot or burst of blood vessel. Microwave techniques have been investigated as a reliable solution for the immediate detection of brain strokes. To that end, an appropriate signal acquisition and processing method is needed to(More)
In many medical applications, getting an accurate detection in real, or at least quasi-real, time is vital for the survival of the patient. An example of such an application is the detection of brain injuries due to different accidents. In this work, a frequency-domain multistatic microwave imaging technique, which aims to serve medical applications that(More)
The objective of this paper is to study the effect and suitability of directionality in near-field microwave head imaging system. To that end, the near-field performances of directional and omnidirectional antennas are compared. The imaging performance comparison is carried out through experimental validation of a realistic artificial head phantom with an(More)