The different biomedical diagnostic instruments employed in medical measurements. We cover various biomedical diagnostic techniques employed that include and not limited to: X-rays, Magnetic resonance imaging (MRI), Ultrasound scanning, PET scanning, etc.
How the three imaging modalities compare? We examine each of the three diagnostic imaging methods as discussed in the following sections:
Unlike other imaging modalities, ultrasound resolution and penetration depends on the center frequency and type of frequency … Read More
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
The radionuclide imaging devices place radionuclides, called tracers, within the body. We have 3 types of imaging that include the following:
Let’s discuss briefly each of the above … Read More
The key application of ultrasound in cardiovascular diagnosis is echocardiogram. It utilizes M-scan technique in the imaging. In the echocardiogram, the movements of the valves and other structures of the heart are displayed as a function of time. The … Read More
Radioisotopes diagnosis technique helps in obtaining image of the body anatomy and functions. The images are obtained by detecting energy emitted from the radioactive substance injected in the patient either intravenously or by mouth.
The radiation emitted from the patient … Read More
Both ultrasound and X-rays are used in medical diagnosis. We look at the differences in their physical properties and the applications differences between the two as applied in medical diagnosis.
Table 1: Physical Property differences between Ultrasound and X-rays
| Property |
The ultrasound is widely used for the diagnostics scanning of the eye. A-scan and B-scan modes of display are used in ophthalmic scanning. The transducer is placed directly over the eye of the patient while performing ophthalmic scanning. The high … Read More
Pressure in the eye is called Intraocular Pressure (IOP). Tonometer is the instrument that is used to determine IOP. The presence of any elevated IOP can be dangerous because people with varying degree of IOP elevation may develop certain … Read More
Ophthalmoscope is an instrument used to examine the interior of the eye including the lens, retina, and optic nerve. It is used primarily to:
Ophthalmoscope is … Read More
Imaging systems employ pulsed ultrasound or the pulsed Doppler mode. The instrumentation system consists of:
