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Low-dosage spiral CT scanning method for PET/MRI (positron emission tomography/magnetic resonance imaging) lung examination

A technology of CT scanning and inspection methods, applied in the medical field, can solve problems such as missed diagnosis, potential risks of patient-centered medical care, and shortcomings in detection efficiency, so as to reduce pain, reduce the possibility of missed diagnosis, and improve the detection rate.

Inactive Publication Date: 2016-08-17
上海全景医学影像诊断中心有限公司
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Problems solved by technology

However, there is no doubt that PET / MRI does have shortcomings in the detection efficiency of small lesions in the chest. For example, ground-glass lesions and inflammatory lesions in the lungs may be missed, which will bring unpredictable and serious consequences to patients or cause serious harm to the center. potential medical risk

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Embodiment Construction

[0020] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.

[0021] This low-dose helical CT scan is used for the examination method of PET / MRI lung, and its main feature is that described low-dose helical CT scan is used for the examination method of PET / MRI lung comprising:

[0022] (1) Before the injection of FDG drugs, a low-dose helical CT scan was performed; the scanning parameters were 80-120KV, 20-60mAs, the scanning range was from the lung apex to the lung base, the DLP was 63.4mGY·cm, and the radiation dose was 70.8mGY. The weighted dose index of the low-dose helical CT scan is 25% of the conventional scan dose; wherein the conventional dose DLP is 248mGY·cm, mAs is 3521mAs (P<0.001), and the radiation dose is 274.7mGY.

[0023] (2) SPN is found in the lung in the scan, the DFOV is reduced, and the scan parameters are increased to 140-180Kv and 260mA for ta...

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Abstract

The present invention relates to a kind of low-dose helical CT scan is used for the examination method of PET / MRI lung, wherein said examination method comprises: (1) before injecting FDG medicine, carry out low-dose helical CT scan; (2) scan If there is a solitary pulmonary nodule SPN in the lung, a target scan is performed; (3) PET / MRI examination is performed after the scan; the low-dose helical scan is completed on a multi-slice helical CT machine. (4) After the PET / MRI scan, the multifunctional workstation was used to fuse the spiral CT scan data with the PET image in PET / MRI. The low-dose helical CT scan in this invention is used for PET / MRI lung inspection method, which can detect small chest lesions as early as possible, and can make PET / MRI scans detect pulmonary lesions with sensitivity and accuracy after cooperating with the application Significantly increased, reaching 95% and 84% respectively. In particular, the helical CT scan data and the PET data in PET / MRI will be fused in a different machine to further improve the qualitative diagnosis ability of the lesions detected by the helical CT scan.

Description

technical field [0001] The invention relates to the medical field, in particular to a method for using low-dose helical CT, in particular to a low-dose helical CT scanning method for PET / MRI lung inspection. Background technique [0002] Compared with the commonly used PET / CT, PET / MRI examination can greatly reduce the radiation damage to the human body, because unlike CT, MRI does not have any radiation damage to the human body. Excessive CT examinations may lead to cancer. Therefore, PET / MRI is the best physical examination and diagnostic equipment. Compared with other methods, PET / MRI examination has high sensitivity and good accuracy, and has the value of early detection and early diagnosis for many diseases (especially tumors and the most common heart and brain diseases). [0003] Low-dose spiral CT can increase the detection rate of non-calcified nodules and bronchial morbidity (disease) in the lung (calcified and non-calcified nodules), and is of great value in the ...

Claims

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Application Information

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IPC IPC(8): A61B6/02
CPCA61B6/027A61B6/5235
Inventor 石华铮
Owner 上海全景医学影像诊断中心有限公司
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