Data Item _em_micrographs.correction_type

General

Item name
_em_micrographs.correction_type
Category name
em_micrographs
Attribute name
correction_type
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The difference between the two is that in Phase only correction only the phase of the CTF is flipped whereas in Phase and Amplitude correction, Wiener filtering is done to correct both phase and amplitude. If the envelope function and noise spectrum parameters are not available then phase only correction is recommended. For example if the parameters calculated from far from focus images are used to correct near to focus images (after adjusting for the defocus difference), the envelope function and noise spectrum parameter estimates of far from focus images are not reliable for near to focus images.

Data Type

Data type code
line
Data type detail
char item types / multi-word items ...
Primitive data type code
char
Regular expression
[][ \t_(),.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*

Controlled Vocabulary

Allowed Value Details
Phase and Amplitude correction
Phase only correction

Controlled Vocabulary at Deposition

Allowed Value Details
Phase and Amplitude correction
Phase only correction