What is an OCTA scan?
Optical coherence tomography angiography (OCTA) is a non-invasive imaging technique known as optical coherence tomography (OCT) developed to visualize vascular networks in the human retina, choroid, skin and various animal models.
How is OCT angiography done?
OCT-A employs two methods for motion detection: amplitude decorrelation or phase variance. The former detects differences in amplitude between two different OCT B-scans. Above is a single structural OCT b-scan through the center of the angiogram (yellow).
What is the difference between OCT and OCTA?
The important difference between OCT and OCTA is: OCT images anatomical structure, OCTA images vascular structure. A large amount of burden is placed on the imager-usually technicians-because the amount of data captured in a scan is more than the clinician, or interpreter of the images, can feasibly decipher.
What is an A scan OCT?
Optical coherence tomography (OCT) is a non-invasive imaging method, which produces high-resolution volumetric histological images of tissue. In OCT many one-dimensional scans (a-scans) are performed at several depths to create a two-dimensional image (b-scan).
What is Cnvm in ophthalmology?
Choroidal neovascular membranes (CNVM) are new blood vessels that grow beneath the retina and disrupt vision. These blood vessels grow in an area called the choroid, the area between the retina and the sclera (the white part of your eye).
What does OptraSCAN desktop image scanning system do?
OptraSCAN ® desktop scanning systems are cloud-enabled to provide the ultimate flexibility for storing, archiving and managing digital images and metadata on pay-per-use pricing model. Cloud-enabled image management and reporting, image analysis, real-time digital conferencing.
How is an OctreoScan used to diagnose cancer?
What is an OctreoScan? An OctreoScan is fairly straightforward. While it cannot give an indication as to tumor size, it can indicate the extent of disease metastasis and show possible loci for tumors which may or may not have been suspected.
What are the benefits of the OCT imaging system?
New high-density OCTA imaging produces larger format scans with outstanding image quality to enable assessment with a wider field of view. And Because OCTA is derived from OCT data, you’ll see widefield structural OCT images, such as B-scans and thickness maps, right alongside the OCTA images, all from a single imaging system.
How is octa used in a retinal scan?
OCTA produces ultra-high resolution, three-dimensional images that are displayed as individual layers of retinal vasculature, allowing you to isolate specific areas of interest and see microvasculature that is not easily seen with FA or ICGA.
