Compare the area on the right side where the maxillary sinus ostium (O) was observed on the previous CT scan. There is no opening now, only the gray tissue completely blocking the ostium. Not surprisingly, this patient had a great deal of pain as a result of that blockage. Although there...
CT scan of the Chest (Thorax) is done to further study an abnormality or a problem that is detected on a plain chest X-ray. Chest CT can also be done to look for enlarged lymph nodes, problems with the heart, aorta, esophagus, lungs and tissues present in the chest. Some of the co...
Head CT scan is often used to detect abnormalities in the brain such as tumors. The scan can help to diagnose a stroke by pointing out blood circulation problems in a specific part of the brain. It can pinpoint the arteries where blood flow has been obstructed. A head CT scan is also ...
Data from a computer tomography scan of at least one nasal cavity and one sinus cavity of the patient and a completed headache questionnaire are matched to at least one nasal/sinus surgery plan to operate on at least one of; a nasal septum, at least one sinus cavity and at least one ...
[2]Koedwut S, Kaewlai R, Sudsang T, et al. Clear sinus sign on head CT scan: reliable criterion to exclude paranasal sinus fracture[J]. J Oral Maxillofac Surg, 2020, 78(6): 996.e1-996996.e6. DOI: 10.1016/...
A total of 27 pouch patients with inflammatory bowel diseases, who underwent pelvic MRI-DIXON and CT scan within one year, were included. Peripouch fat areas were measured at the middle height level of pouch (AreaM) and the highest level of pouch (AreaH)
If a case of chronic sinusitis is suspected, it is very important to check whether the semilunar hiatus is open. It represents the main channel for discharging secretions of the paranasal sinuses. In Figure 60.3 you will find examples of anatomic variations which narrow this channel and may pr...
From the CT-scan image, fiducial markers were extracted using contrast enhancement and thresholding (Fig. 3(d)). Marker centre points, obtained by detecting blob-like contours in the image using topological structural analysis33, were highlighted on the reconstructed image for assistance (Fig. 4(...
The CT scan was analyzed for 1) degree of aeration of the mastoid; 2) location of the sigmoid sinus; 3) height of the tegmen, which correspond to difficulties associated with a cortical mastoidectomy, as well as 4) the presence of air cells around the facial recess, which relates to ...
For each foot scan, 960 CT images at 0.26 mm distance were exported in a Dicom file. This was processed in Mimics Innovation Suite version 22.0 (Materialise, Leuven, Belgium) by a single operator to work out a 3D mesh for distal tibia and fibula and the foot bones (Fig. 1, bottom-rig...