Medical imaging is a technology that enables viewing of the interior of the body for diagnostic and therapeutic reasons, and it is critical in today's patient management.
Fremont, CA: Medical diagnostic imaging makes use of 'invisible' waves such as electromagnetic radiation, magnetic fields, or sound waves. Understanding the various sorts of waves enables us to comprehend what medical imaging technology is all about. Typically, the waves originate on one side of the body, pass through the body, and collide with a detector on the opposite side. Different body tissues absorb the waves to varying degrees. Thus, the sensor constructs an image from the shadows of various body tissues. Earlier kinds of medical imaging, such as radiography, relied on a photodetector plate that required film processing before visibility. Today's advanced medical imaging technology enables images to be taken directly via a detecting camera and displayed digitally on a monitor.
Applications of medical imaging technology
Ultrasound, as the name implies, acquires medical images through the use of sound waves. Due to the absence of electromagnetic radiation, it is likely the safest method of diagnostic medical imaging. The ultrasonic probe transmits sound waves into the body via a conductive gel. The waves then collide with and bounce off numerous anatomical components within the body. They are taken and converted into monitor-viewable images. Medical personnel can view the movement of blood within blood arteries using a particular type of ultrasound called Doppler.
The patient is positioned within a CT chamber that houses both the detector and the source. The source and detector are positioned opposite one another and travel in an arc around the patient, sequentially acquiring images. The images are acquired in a few millimeter-thick slices along three distinct axes, yielding coronal, axial, and sagittal portions. Following that, these parts can be rebuilt to create a three-dimensional image. CT pictures are significantly more detailed than conventional radiography. CT scanning, on the other hand, exposes the body to a far larger dosage of radiation.
Magnetic Resonance Imaging
Radio waves within a magnetic field are used in this diagnostic medical imaging method. Water makes up the majority of the human body. When the water molecules are placed in the MRI scanner, the hydrogen ions within them position themselves according to the field. This alignment is altered when radiofrequency waves are administered, and the ions then revert to their original position. These alignment changes are captured and processed to form a picture. The magnetic resonance imaging (MRI) technique is advantageous for visualizing soft tissue features such as muscles, tendons, and joint spaces. While there is no radiation risk associated with MRI, the use of a high magnetic field can be problematic for persons who have metal implants.