Article ID: NSC1055
Created: 6 May 2017
Reviewed: 12 Aug 2017
Information in this article applies to:
The uScope Navigator software gives you a great amount of control over your scanned images. Some option settings improve scan performance while some options negatively impact scan performance and may cause large regions of interest to take a long time to complete.
Following, are a few tips and techniques for improving the scan performance of your uScope whole slide scanner.
There are a number of contributors to the time required to scan a region of interest. Among these are:
Any of these can negatively affect the performance of the uScope. Combining options that require extra processing time can seriously slow the performance of the uScope.
Each of the causes mentioned above contribute to the total scan time. Below is a discussion of each along with suggestions for reducing their effect on total scan time.
Obviously, the larger the area you scan, the longer it will take to scan the entire region of interest. If the region you are scanning includes large empty areas, you may be able to improve scan speed by scanning multiple regions of interest (that exclude the empty areas).
In many cases, the Standard Definition (SD) camera mode is more than adequate for whole slide scans. It also has the benefit of being about four (4) times faster than the High Definition (HD) camera mode. You should always use SD mode unless you have specific requirements that require the HD mode.
For uScope models with a 20x objective, the HD camera mode provides nearly 40x image quality at a performance sacrifice of four (4) times.
For uScope models with a 40x or 60x objective, the HD camera mode provides little additional resolution and is unnecessary for most images.
While it may be tempting to scan everything in HD camera mode, this camera mode doubles the resolution of each field and increases scan times by about four (4) times. Use the HD camera mode with great care as it is always slower than the SD camera mode.
The uScope Navigator software allows you to choose the focus method used when scanning. Each focus method works best when applied to certain types of scans. Some focus methods are faster or better than others.
Fields that are clear (white) have no content and are especially hard to focus. The reason is that there is nothing in the field to use as a reference for good focus. Without any reference, the focus algorithm takes an excessive amount of time to determine that the field cannot be focused. For scans using the Exhaustive Stack focus method, clear or white fields are especially detrimental to scan speed.
While the uScope family of whole slide scanners is designed to work with the widest variety of desktop and laptop computers, higher performance PCs yield better results. Following are a few guidelines regarding the computer you use with the uScope: