Magnetoencephalography (MEG) is a form of neuroimaging that maps the tangential components of magnetic fields associated with scalp potentials produced by the brain. These potentials are similar to those that can be recorded as electroencephalograms (EEGs) however the dynamic magnetic … Read More
Tag: Medical imaging
What is Functional MRI (fMRI)?
The Principle & Applications of Confocal Imaging
Confocal imaging (CI) is based on illuminating a single point on the sample and collecting scattered light from the same point of the sample. The illumination point on the sample is the image of the illumination pinhole and is imaged … Read More
Basic Features of Teleradiology
Teleradiology is a subcategory of telemedicine operation focusing in remote diagnosis of medical images. Teleradiology uses computer, display and telecommunication technologies for radiologists to make remote diagnosis from radiological images generated at distant examination sites. The diagnostic report is sent … Read More
The Function of a PET scan in Biomedical Diagnostics
Comparison of Imaging Modes – Ultrasound, CT & MRI
How the three imaging modalities compare? We examine each of the three diagnostic imaging methods as discussed in the following sections:
Ultrasound Imaging
Unlike other imaging modalities, ultrasound resolution and penetration depends on the center frequency and type of frequency … Read More
The Process of Setting up a PET scan
The ability of a PET scanner to target specific functions or objects e.g. tumour makes it a very effective tool in non-invasive medical imaging and diagnostics. The process involves using radionuclides, so PET scanners aren’t available at every medical facility.… Read More
Contrast Agents Commonly Applied In Medical Imaging
Contrast agents emphasize or magnify the physiological features or functions that would otherwise, be invisible, weak or obscured in images. Contrast agents are commonly applied in vasculature and also employed in applications where the uptake of an agent by an … Read More
Positron Emission Tomography (PET)
PET scan is an imaging technique which produces images of the body by detecting radiation or gamma rays emitted from the body after the patient is injected with radioactive substance. When a positron emitted by a radioactive substance bombards an … Read More