CT performance detecting phantom for automatic tube current modulation mode and test method of phantom

A technology of current modulation and mode detection, applied in the field of CT medical imaging, can solve the problems that cannot be used to evaluate the quality of scanning CT images
CN110179484APending Publication Date: 2019-08-30FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
FUDAN UNIV
Publication Date
2019-08-30

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Abstract

The present invention belongs to the technical field of CT medical imaging and specifically discloses a CT performance detecting phantom for a CT automatic tube current modulation mode and a test method of the phantom. The CT performance detecting phantom has a main material of polymethyl methacrylate, comprises a CT value detecting module, a high contrast resolution detecting module, a low contrast resolution detecting module, and a field uniformity and noise detecting module, and can be used to measure uniformity and noise at all levels in the tube current modulation mode. The CT performancedetecting phantom solves a problem that current image quality detecting phantoms are not suitable for scanning CT images in the automatic tube current modulation mode, can automatically analyze imagequality evaluation parameters (CT value linearity, noise, uniformity, high contrast resolution, low contrast resolution, texture features, etc.) generated by an automatic tube current modulation scanning sequence, and achieves image quality performance evaluation of a CT new technology-automatic tube current modulation technology.
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Description

technical field

[0001] The invention belongs to the technical field of CT medical imaging, and in particular relates to a CT performance detection phantom used in a CT automatic tube current modulation mode and a testing method thereof. Background technique

[0002] Computed Tomography (CT) originated in the late 1960s and began to be used clinically in 1972. The powerful diagnostic capabilities of CT and its innovative breakthroughs in medical imaging make it considered one of the milestones in the development of clinical images in the last century. Nowadays, X-ray computed tomography imaging has become one of the most important auxiliary means of medical diagnosis. In order to ensure that CT equipment provides high-quality images to meet the needs of clinical diagnosis, CT equipment must be tested regularly. The performance criteria for evaluating the image quality of a CT device mainly include: high contrast resolution noise, density resolution, CT value, linearity and u...

Claims

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