CBCT - Cone beam computed tomography

CBCT - Cone beam computed tomography

CT
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CBCT - Cone beam computed tomographyHow does CT work? CT uses X-rays to perform its work. These X-rays come from an X-ray tube which is placed inside a square machine called the gantry. The part of your body to be scanned goes inside a hole in this gantry. Why is CT such a good modality? Ordinary X-ray pictures are one-dimensional representations of body parts but CT allows us to section the body to view its inner parts. Thus, the skull X-ray only shows us the outer part, whereas CT shows us the inner parts of the brain. Where is CT useful? All parts of the body can be scanned with CT. For each part, there are specific indications or reasons for scanning. Your referring doctor and the consultant radiologist are the best judges of the usefulness of CT scanning in a specific situation and areas. Are there any dangers of CT scanning? Though X-rays involve radiation, there are no dangers, in practice. In women who are pregnant, however, CT scanning should be done after weighing all the risks. What is the injection that I may receive? Majority of the patients will be injected with a "dye" which enhances the ability of CT scans to pick up abnormalities. This is routine. The dye used is a non-ionic contrast medium, which is much safer than the routine, cheaper, ionic dyes. Are there any complications because of the "dye"? 0.5% of patients may get nausea and redness of the skin. Though severe reactions are known, these are very rare and uncommon.


Why is CBCT - Cone beam computed tomography done ?

This CT is commonly used for treatment planning of orthodontic issues. It is also useful for more complex cases that involve:

  • Surgical planning for impacted teeth
  • Diagnosing temporomandibular joint disorder (TMJ)
  • Accurate placement of dental implants
  • Evaluation of the jaw, sinuses, nerve canals and nasal cavity
  • Detecting, measuring and treating jaw tumors
  • Determining bone structure and tooth orientation
  • Locating the origin of pain or pathology
  • Cephalometric analysis
  • Reconstructive surgery

CBCT - Cone beam computed tomography Instructions

CCO:
Ask for the status of pregnancy in a female patient.No food intake 6 hrs prior to CT SCAN. Only liquids can be taken untill CT SCAN is done.. All the regular medications can be taken with sips of water. Ask for any history of claustrophobia.

SLAs:
For CT test scheduled before 8 AM eConsultation will be scheduled before 9 PM same day and the physical reports to be delivered by 10 PM same day
For CT test scheduled after 8 AM eConsultation to start from 8 AM next day and the physical reports to be delivered starting from 8 AM next day

FACILITATOR:
Confirm the compliance of preparations required. Ask the patient to wear comfortable clothes free of metals, zippers, hooks.

SLAs:
For CT test scheduled before 8 AM eConsultation will be scheduled before 9 PM same day and the physical reports to be delivered by 10 PM same day
For CT test scheduled after 8 AM eConsultation to start from 8 AM next day and the physical reports to be delivered starting from 8 AM next day

Why is CBCT - Cone beam computed tomography ?

Cone beam computed tomography (or CBCT, also referred to as C-arm CT, cone beam volume CT, or flat panel CT) is a medical imaging technique consisting of X-ray computed tomography where the X-rays are divergent, forming a cone.