The patient is automatically moved head first into the CT gantry, and the x-ray tomogram is acquired. Now the patient is automatically moved through the PET gantry, which is mounted in parallel with the CT gantry, and the PET slices are acquired. The patient may now leave the device, and the PET-CT software starts reconstructing and aligning the PET and CT images.
Diagnostic Procedures. Three common diagnostic procedures, tonometry, visual field tests, and ophthalmoscopy, enable ophthalmologists to screen patients for glaucoma. To make a definitive diagnosis, ophthalmologists often use all 3 procedures as part of an overall eye examination. The procedures are simple, relatively quick, and virtually painless.
This procedure is typically reserved for those with moderate to advanced cases of glaucoma due to the invasiveness of the procedure and possible complications.4 While there had previously been limited surgical options for patients with mild-moderate glaucoma, developing micro invasive glaucoma surgery (MIGS) procedures are creating new options for those who do not meet the criteria for trabeculectomy.