Air calibration

1. A method for air calibration, the method comprising:

generating an initial scanning condition from a subject scanning sequence of a medical equipment, wherein the subject scanning sequence is generated when a subject is scanned by the medical equipment to obtain an image of the subject and is recorded in association with a subject ID uniquely identifying the subject;

obtaining an air calibration scanning condition by correcting the initial scanning condition; and

generating air calibration data by performing an air calibration on the medical equipment with the air calibration scanning condition;

wherein generating the initial scanning condition from the subject scanning sequence of a medical equipment comprises:

loading a subject information database which stores one or more subject scanning sequences;

filtering the subject information database by deleting a subject scanning sequence in the subject information database which has the same scanning parameter values as another subject scanning sequence in the subject information database, wherein having the same scanning parameter values indicates values of each scanning parameter in two subject scanning sequences are the same; and

generating an initial scanning condition table including one or more initial scanning conditions according to the filtered subject information database, wherein each of the initial scanning conditions corresponds to one subject scanning sequence in the filtered subject information database.

2. The method according to claim 1 , wherein said generating an initial scanning condition from a subject scanning sequence of a medical equipment comprises:

determining whether a target subject scanning sequence has the same scanning parameter values as a subject scanning sequence recorded in the subject information database when the target subject scanning sequence is to be or being performed by the medical equipment; and

generating an initial scanning condition from the target subject scanning sequence and writing the generated initial scanning condition into the initial scanning condition table if the determination result is no.

3. The method according to claim 1 , wherein said obtaining an air calibration scanning condition by correcting the initial scanning condition comprises:

performing a standardization process on scanning parameters of each initial scanning condition in the initial scanning condition table; and

filtering the initial scanning condition table by deleting a standardized initial scanning condition in the initial scanning condition table which has the same scanning parameter values as another standardized initial scanning condition in the initial scanning condition table, wherein having the same scanning parameter values indicates values of each scanning parameter in two initial scanning conditions are the same;

writing each of the standardized initial scanning conditions in the filtered initial scanning condition table as an air calibration scanning condition into an air calibration scanning condition table.

4. The method according to claim 3 , wherein said performing a standardization process on scanning parameters of each initial scanning condition in the initial scanning condition table comprises:

comparing the value of a scanning parameter in the initial scanning condition with one or more parameter ranges corresponding to the scanning parameter defined in an air calibration scanning condition database, so as to determine a matched parameter range which covers the value of the scanning parameter; and

rewriting the value of the scanning parameter in the initial scanning condition with a standard value corresponding to the matched parameter range defined in the air calibration scanning condition database.

5. The method according to claim 1 , wherein said generating air calibration data by performing an air calibration on the medical equipment with the air calibration scanning condition comprises:

setting scanning parameters of the medical equipment according to scanning parameters contained in the air calibration scanning condition; and

causing the medical equipment to scan air according to the set scanning parameters, so as to generate air calibration data under the air calibration scanning condition.

6. The method according to claim 1 , wherein

the air calibration scanning condition comprises a combination of a plurality of scanning parameters; and

the plurality of scanning parameters comprises any one or more of a focus mode, a focus position, a focal spot size, a bulb tube voltage, a scanning resolution, a rotational speed, and a slice position.

7. An air calibration device comprising:

a processor which invokes machine readable instructions corresponding to a control logic for air calibration stored on a storage medium and executes the machine readable instructions to:

generate an initial scanning condition from a subject scanning sequence of a medical equipment, wherein the subject scanning sequence is generated when a subject is scanned by the medical equipment to obtain an image of the subject and is recorded in association with a subject ID uniquely identifying the subject;

obtain an air calibration scanning condition by correcting the initial scanning condition; and

generate air calibration data by performing an air calibration on the medical equipment with the air calibration scanning condition;

wherein, when generating an initial scanning condition from a subject scanning sequence of a medical equipment, the machine readable instructions further cause the processor to:

load a subject information database which stores one or more subject scanning sequences;

filter the subject information database by deleting a subject scanning sequence in the subject information database which has the same scanning parameter values as another subject scanning sequence in the subject information database, wherein having the same scanning parameter values indicates values of each scanning parameter in two subject scanning sequences are the same; and

generate an initial scanning condition table including one or more initial scanning conditions according to the filtered subject information database, wherein each of the initial scanning conditions corresponds to one subject scanning sequence in the filtered subject information database.

8. The device according to claim 7 , wherein said machine readable instructions further cause the processor to:

determine whether a target subject scanning sequence has the same scanning parameter values as a subject scanning sequence recorded in the subject information database when the target subject scanning sequence is to be or being performed by the medical equipment; and

generate an initial scanning condition from the target subject scanning sequence and write the generated initial scanning condition into the initial scanning condition table if the determination result is no.

9. The device according to claim 7 , wherein said machine readable instructions further cause the processor to:

perform a standardization process on scanning parameters of each initial scanning condition in the initial scanning condition table; and

filter the initial scanning condition table by deleting a standardized initial scanning condition in the initial scanning condition table which has the same scanning parameter values as another standardized initial scanning condition in the initial scanning condition table, wherein having the same scanning parameter values indicates values of each scanning parameter in two initial scanning conditions are the same;

write each of the standardized initial scanning conditions in the filtered initial scanning condition table as an air calibration scanning condition into an air calibration scanning condition table.

10. The device according to claim 9 , wherein said machine readable instructions further cause the processor to:

compare the value of a scanning parameter in the initial scanning conditions with one or more parameter ranges corresponding to the scanning parameter defined in an air calibration scanning condition database, so as to determine a matched parameter range which covers the value of the scanning parameter; and

rewrite the value of the scanning parameter in the initial scanning condition with a standard value corresponding to the matched parameter range defined in the air calibration scanning condition database.

11. The device according to claim 7 , wherein said machine readable instructions further cause the processor to:

set scanning parameters of the medical equipment according to scanning parameters contained in the air calibration scanning condition; and

cause the medical equipment to scan air according to the set scanning parameters, so as to generate air calibration data under the air calibration scanning condition.

12. The device according to claim 7 , wherein the air calibration scanning condition comprises a combination of a plurality of scanning parameters; and the plurality of scanning parameters comprises any one or more of a focus mode, a focus position, a focal spot size, a bulb tube voltage, a scanning resolution, a rotational speed, and a slice position.

13. A non-transitory computer readable storage medium storing instructions executable by a processor and upon such execution causes the processor to:

generate an initial scanning condition from a subject scanning sequence of a medical equipment, wherein the subject scanning sequence is generated when a subject is scanned by the medical equipment to obtain an image of the subject and is recorded in association with a subject ID uniquely identifying the subject;

obtain an air calibration scanning condition by correcting the initial scanning condition; and

generate air calibration data by performing an air calibration on the medical equipment with the air calibration scanning condition;

wherein, when generating an initial scanning condition from a subject scanning sequence of a medical equipment, the instructions cause the processor to:

load a subject information database which stores one or more subject scanning sequences;

filter the subject information database by deleting a subject scanning sequence in the subject information database which has the same scanning parameter values as another subject scanning sequence in the subject information database, wherein having the same scanning parameter values indicates values of each scanning parameter in two subject scanning sequences are the same; and

generate an initial scanning condition table including one or more initial scanning conditions according to the filtered subject information database, wherein each of the initial scanning conditions corresponds to one subject scanning sequence in the filtered subject information database.