Question

Cross-sectional image of internal body structure can be obtained by using this medical
instrument
A. ECG- Electrocardiograph
B. EEG- Electroencephalography
C. CAT- Computerized Axial Tomography
D. PET- Positron Emission Tomography
E. NMR- Nuclear Magnetic Resonance imaging

Answer 1

Hint: When consulting a physician for an illness, discomfort, or disease, the physician usually prescribes a series of blood tests and non-invasive tests to ultimately reach a diagnosis for the condition. Blood tests though help provide a diagnosis, non-invasive tests usually help figure out any abnormalities within the body by providing a graph or internal body image.

Complete step by step answer: A procedure that does not involve the introduction of an instrument into the patient’s body is termed as non-invasive. Medical imaging is one of these non-invasive procedures. Medical imaging is the technique and process used in creating a visual representation of organ or tissue physiology and the internal structure of the body for medical and clinical analysis. It has been repeatedly utilized to diagnose and treat diseases and to identify abnormalities. Medical imaging uses technologies such as X-ray radiography, ultrasound, magnetic resonance imaging, thermography, medical photography, and to some extent endoscopy. Endoscopy can be considered invasive but is also used to locate and eliminate tumor tissues for biopsy.
A. Electrocardiograph (ECG): An electrocardiograph is a machine that records the heart’s electrical activity. It does not implement any electricity into the body but just detects the tiny electrical signals responsible for pumping blood around the body.
B. Electroencephalogram (EEG): Brain cells have been discovered to communicate through electrical impulses with each other. These impulses can be studied using an electroencephalogram. This helps evaluate brain activity and indicate any abnormalities.
C. Computed Axial Tomography (CAT): Also known as a computed tomography scan or CT scan.
Tomographic stands for cross-sectional. This technique of medical imaging uses multiple X-ray measurements taken from different angles producing cross-sectional images that are combined and processed in a computer to display the inside of the body to the physician or diagnostician.
D. Positron Emission Tomography (PET): A PET scan allows us to visualize and measure changes in physiological activities such as blood flow, absorption, and chemical compositions in specific regions. This technique also allows us to visualize and measure changes in metabolic processes. This technique uses radioactive substances known as radiotracers for the imaging technique.
E. Nuclear Magnetic Resonance Imaging (NMR): This is a spectroscopic technique utilized to
procured information on the microscopic chemical and physical composition of molecules. An MRI uses a radiofrequency range of the electromagnetic spectrum and is based on the absorption and emission of energy in this range.
Therefore, the correct answer is C, i.e., Computed Axial Tomography (CAT).

Note: Medical privacy law covers medical imaging. The Health Insurance Portability and
Accountability Act (HIPAA) in the United States, set a restriction on the utilization of protected health information by the health providers to protect the information of the past, present, or future of an individual relating to their physical or mental health.