A hematoma detector—a practical application of instrumental motion as signal in near infra-red imaging

Abstract

In this paper we discuss results based on using instrumental motion as a signal rather than treating it as noise in Near Infra-Red (NIR) imaging. As a practical application to demonstrate this approach we show the design of a novel NIR hematoma detection device. The proposed device is based on a simplified single source configuration with a dual separation detector array and uses motion as a signal for detecting changes in blood volume in the dural regions of the head. The rapid triage of hematomas in the emergency room will lead to improved use of more sophisticated/expensive imaging facilities such as CT/MRI units. We present simulation results demonstrating the viability of such a device and initial phantom results from a proof of principle device. The results demonstrate excellent localization of inclusions as well as good quantitative comparisons.

Prefrontal cortex hemodynamics and age: a pilot study using functional near infrared spectroscopy in children

“…fMRI BOLD signal is most sensitive to the magnetic property of deoxy-hemoglobin [Hb]. Importantly for pediatric applications, fNIRS instruments are small and transportable, less restraining compared to fMRI or PET, and can tolerate a large degree of subject motion (Riley et al, 2012 ). These features make the technique well- suited for young children who are not able to remain still for long periods of time (Elwell et al, 2005 ; Nagamitsu et al, 2006 ; Gervain et al, 2011 ).…”

Detection of Optical Inhomogeneities of Biological Tissue Using TPSF Conformal Mapping

“…процесс восстановления изображения в диффузионной оптической томографии (ДОТ) продолжителен по времени даже при использовании больших объемов оперативной памяти и скорости вычислений компьютерных систем, что является одной из ключевых проблем ДОТ [7]. В связи с этим активно разрабатываются [3,[6][7][8][9][10] упрощенные методы экспресс регистрации неоднородностей в биологических тканях. Эти методы, как правило, основаны либо на замене решения обратной задачи анализом формы ВФРТ, либо на серьёзных допущениях при решении обратной задачи.…”

High spatial resolution identification of hematoma in inhomogeneous head phantom using broadband fNIR system

“…The location and percentage of oxygen absorbed in the brain can be related to different physiological activities through fNIR system. Measuring the reduction in de-oxygenated hemoglobin or increase in oxygenated hemoglobin leads to an increase in oxygenated blood volume and having this localized information related to hematoma detection [ 9 ], would aid in earlier diagnosis. Resulting is faster, more efficient and cost-effective treatment.…”