Essays about: "Physiological signal"

Showing result 6 - 10 of 37 essays containing the words Physiological signal.

  1. 6. Functional connectivity analysis in the human brain using ultra-high field MRI

    University essay from Lunds universitet/Examensarbeten i bioinformatik

    Author : Theodor Rumetshofer; [2021]
    Keywords : Biology and Life Sciences;

    Abstract : Introduction: Functional magnetic resonance imaging (MRI) is a non-invasive method which uses a combination of a strong magnetic field and radio frequency pulses to image magnetic difference between oxygenated and deoxygenated blood in the human brain. This contrast differences can be used to identify areas in the brain when subjects performing an active task in the MRI scanner. READ MORE

  3. 7. Embryots signalering under tidig dräktighet : en jämförelse mellan idisslare, gris och häst

    University essay from SLU/Dept. of Anatomy, Physiology and Biochemistry

    Author : Sophia Mourath; [2019]
    Keywords : dräktighetssignal; blastocyst; konceptus; progesterone; östrogen; corpus luteum; idisslare; gris; häst;

    Abstract : Tidig embryonal död under dräktighet är vanligt förekommande hos våra domesticerade djur vilket får konsekvenser för reproduktionsresultatet. För att en dräktighet skall etableras och kunna fortskrida krävs det kommunikation mellan det tidiga embryot eller konceptus (den nya individen med dess fosterhinnor) och det maternella systemet. READ MORE

  4. 8. Developing a New Method for MRI Triggering Using Doppler Ultrasound

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Usama Gazay; [2019]
    Keywords : ;

    Abstract : Purpose: Magnetic Resonance Imaging (MRI) is a medical imaging technique used in radiology to produce high quality images of the anatomy and the physiological processes of the body. Cardiac gating is a triggering system used for the MRI scanner to synchronize the MRI scanner with the cardiac cycle of the patient while imaging. READ MORE

  5. 9. Detecting Cardiac Pulsatility and Respiration using Multiband fMRI

    University essay from Umeå universitet/Institutionen för fysik

    Author : Joakim Jonsson; [2018]
    Keywords : fMRI; multiband; cardiac pulsation; respiration; correlation analysis; neuroimaging;

    Abstract : Purpose: Arterial stiffening poses an increased risk of cerebrovascular diseases, cognitive impairments, and even dementia as cardiac pulsations reach further into the brain causing white matter hyperintensities and microbleeds. Therefore it is of interest to obtain methods to estimate and map cardiac related pulsatility in the brain. READ MORE

  6. 10. Extraction of Follow up Parameters of Bone Density Microwave Sensor from Post Craniotomy and Lower Extremity Trauma Rehabilitation Measurements

    University essay from Uppsala universitet/Institutionen för informationsteknologi

    Author : George George Thomas; [2017]
    Keywords : ;

    Abstract : Longitudinal microwave based sensor systems facilitates frequent follow ups in scenarios where healing information is largely missing. An example is neonatalcraniotomy where Computerized Tomography (CT) information is available mostly before surgery and up to three years after that. READ MORE