Invention Grant
- Patent Title: Method for generating a radial or spiral MRT image
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Application No.: US15517282Application Date: 2015-10-07
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Publication No.: US10386437B2Publication Date: 2019-08-20
- Inventor: Stefan Wundrak , Volker Rasche
- Applicant: DENTSPLY SIRONA inc.
- Applicant Address: US PA York
- Assignee: DENTSPLY SIRONA Inc.
- Current Assignee: DENTSPLY SIRONA Inc.
- Current Assignee Address: US PA York
- Agency: Dentsply Sirona Inc.
- Priority: DE102014220328 20141007
- International Application: PCT/EP2015/073107 WO 20151007
- International Announcement: WO2016/058876 WO 20160421
- Main IPC: G01R33/56
- IPC: G01R33/56 ; G01R33/561 ; G01R33/48 ; G01R33/565

Abstract:
Disclosed herein is a method for generating an MRI image in which a radial or spiral k-chamber path with a constant angular increment Psi is used to take an MRI image, the angular increment Psi being in the angular range of between 5-55 degrees or being in the corresponding supplementary angle Psi′ and is selected according to the formula PsiN,M=pi/(N+1/(M+tau−1)). Alternatively, for an angular increment Psi which deviates from the angle increment of the optimal distribution of n radial profiles Psiopt=180°/n, the minimum scanning efficiency of the angular increment Psi for n>21 profiles is greater than 0.95, the angular increment Psi is in an angular range of 5° to less than 68.7537°, in particular between 5-55 degrees or in the corresponding supplementary angle Psi′. Compared to the arrangement of the radial or spiral profile using the golden angle of 111.24°, the angle increments calculated according to the above formula lead to lower eddy current artifacts, for example during the use of a b-SSFP-pulse sequence.
Public/Granted literature
- US20170307711A1 METHOD FOR GENERATING A RADIAL OR SPIRAL MRT IMAGE Public/Granted day:2017-10-26
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