Computed Tomography

Computed Tomography

Write short note on advantages of computed tomography.
Answer.

“Steps to explain different types of CT scans: Head vs abdomen CT: Q&A guide”

Following are the advantages of computed tomography:

• CT scanners produce very high-resolution images. There are two types of resolution i.e. geometric and contrast. Conventional diagnostic radiographic technique provides images with fewer than 30 variations of gray, whereas CT scanning technology generates images with more than 200 shades of gray. The increased CT scan grayscale shows subtle variations in tissue density that is not discernable with conventional radiology.

“Understanding the role of computed tomography in medical diagnostics: Q&A explained”

X-ray grid

• Evaluation of jaws with CT needs very precise patient positioning. Without specialized machines, it is necessary to reorient the patient for each series of images to keep image plane perpendicular to the alveolar ridge. The reformattd CT examination, onthe other hand, permits the production of all possible cross-sections from a single data acquisition without moving the patient or reconfiuring the X-ray machine, Each of these pictures produced in this manner can be localized in a three dimensional space, so that there is never a doubt as to which position of alveolar ridge is included in image.

“Importance of studying computed tomography for better healthcare outcomes: Questions explained”

Radiology grid

• Dimensional accuracy of three-dimensional rendered images has been established. Linear measurements of anatomic structures are accurate to within 0.19 mm (0.28%) and angular measures are correct within 0.380 mm (1.39%). The linear measures of anthropologic dimensions of the skull using three-dimensional CT compared favorably with measurements made from original two dimensional slice data and are generally accurate to within 1 mm. Hence, it gives accurate assessment of bone height, width, ridge inclination, bone quality, anatomic spatial relationship, without any superimposition.

“Role of contrast-enhanced CT in diagnosing tumors: Questions answered”

Radiographic grid

• Special dental processing softare programs, which are capable of greater enhancement of CT scan, show threedimensional image and one-to-one correspondence in contrast to conventional tomograms. These programs were introduced in 1987 and provide panoramic and crosssectional views in addition to three-dimensional images of either maxilla or mandible. Measures can directly made from CT fims.

“Common challenges in performing computed tomography effectively: FAQs provided”

Focused grid radiology

• Use of CT scan splint lined with barium sulfate and methyl methacrylate in tooth portion of template permit the implant team to evaluate proposed tooth position, abutment selection and implant placement before initiating the therapy, especially in maxillary anterior region.

Potter-Bucky diaphragm

• Position of critical structures can be accurately assessed with bettr contrast sensitivity than fim tomography and less time consuming for multiple slices.
• It is helpful for patient education and the motivation.