A method of automatic data deletion based on dicom
A technology of automatic deletion and data, applied in the field of medical image data processing, can solve the problem of not being able to delete by mistake, not deleting by mistake, etc.
Active Publication Date: 2018-09-21
SHANGHAI UNITED IMAGING HEALTHCARE
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Problems solved by technology
The method of automatically deleting data is still rarely used in large-scale medical equipment. In the above scheme, there are few strategies for deleting dependencies. If it is applied to medical equipment, it cannot meet the requirements of no mistaken deletion and no missing deletion.
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Embodiment 1
[0036] Detect the disk space capacity for storing data files, which can be detected immediately after the system is turned on, or the detection cycle can be set in advance, and the system will automatically detect the disk space capacity periodically. Set the first threshold of disk free space as required, if the disk free space is less than the first threshold, the system will start the data deletion program, otherwise the system will continue to run normally.
[0037] After the system starts the data deletion program, it first accesses the database to find the data records containing the specified fields. A data record containing a "check complete" field is looked up at the first storage level. Then use the marker of a data record containing the field "check complete" as a foreign key to search for a data record containing the field "unprotected" in the data list of the second storage level. It should be noted that, for medical databases based on DICOM storage hierarchy, wh...
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The invention provides an automatic data deleting method based on DICOM. The method comprises the following steps: step 1, detecting the capacity of a disk space, carrying out step 2 if the available space of the disk space is smaller than a first threshold valve, and otherwise, enabling the system to operate normally; step 2, accessing a database, searching data records confirming to deleting conditions and acquiring the storage path of a data file corresponding to the searched data records in the disk space; step 3, carrying out deleting operation on the data file stored in the disk space according to the storage path; step 4, detecting the capacity of the disk space again, stopping data deleting operation if the capacity of the available space is greater than a second threshold valve, and otherwise, carrying out step 2 again. When the technical scheme provided by the invention is used for deleting data in medical equipment, the situation that data is deleted mistakenly or is not deleted completely can be avoided.
Description
technical field [0001] The invention relates to the technical field of medical image data processing, in particular to a DICOM-based data automatic deletion method. Background technique [0002] Large medical equipment will generate a large number of data files during use, and storing these data files requires a large disk space. Taking PET systems as an example, the raw data acquired by PET scanners are photon events produced by the annihilation of positrons and negatrons acquired by a series of detectors. Typically, a PET scan can generate data volumes up to several million events, and storing these data takes up a lot of disk space. If the disk cannot be cleaned up in time, when the next scan is performed, the scan may fail due to insufficient disk space. [0003] At present, the method of automatically deleting data is mostly used in mobile equipment terminals. In the Chinese patent whose patent number is CN200510083023.4, and the patent name is the method for automati...
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IPC IPC(8): G06F3/06G06F12/02G06F17/30
CPCG06F3/0652
Inventor 马润霞宋文兵
Owner SHANGHAI UNITED IMAGING HEALTHCARE