Hybrid MP-RAGE Trajectory with FID Motion Detection and Self-Navigated Motion Correction (MoCoRAGE)

نویسندگان

  • Tobias Kober
  • Davide Piccini
  • Christoph Forman
  • Thorsten Feiweier
  • Gunnar Krueger
چکیده

Fig. 2 Exemplary FID time course, clearly depicting the head position change (A). Colour bars indicate portions of the scan used to reconstruct images which were co-registered to the first 4 minutes (cyan, B). The 6 sets of motion parameters were used to correct the 2 half of the data, resulting in the final images (C). Hybrid MP-RAGE Trajectory with FID Motion Detection and Self-Navigated Motion Correction (MoCoRAGE) Tobias Kober, Davide Piccini, Christoph Forman, Thorsten Feiweier, and Gunnar Krueger Advanced Clinical Imaging Technology, Siemens Healthcare IM S AW, Lausanne, Switzerland, CIBM AIT, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, Pattern Recognition Lab, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany, Erlangen Graduate School in Advanced Optical Technologies, Friedrich-Alexander-University Erlangen-Nürnberg, Erlangen, Germany, Siemens Healthcare Sector, Erlangen, Germany

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Motion Correction in Magnetic Resonance Imaging Using the Signal of Free-Induction-Decay

Magnetic resonance imaging (MRI) is highly susceptible to subject’s motion and can significantly degrade image quality. In brain MRI exams, involuntary headmovements can affect the sampled k-space data. Such unintended alterations may result in visible image artifacts such as blurring, ghosting and others, and therefore potentially disqualify the image fromdiagnostic purposes. Methods to charac...

متن کامل

Real-time Motion Detection for Structural Brain Imaging Using Multi-Coil FID Navigators

Fig. 2 Uncorrected (black) and corrected (blue) navigator signal of an MP-RAGE measurement. Head position was changed during the period marked violet. The green bars show motion threshold at that moment, red points mark motion-corrupted TRs, which are rescanned at the end (pink bar). Cyan shows the online regression time course. Real-time Motion Detection for Structural Brain Imaging Using Mult...

متن کامل

The Next Step in Self-Navigated Coronary MRI: A Hybrid Approach for Affine Motion Correction

technique and reformatted to display the coronaries (here LAD), (a) were compared to acquisitions performed with the new hybrid method (b). In this case, the vessel sharpness resulted visibly improved in the central and distal parts of the LAD. Figure 1: Schematic description of the hybrid motion correction technique The Next Step in Self-Navigated Coronary MRI: A Hybrid Approach for Affine Mot...

متن کامل

Magnetization-Prepared Shells With Integrated RadiaL and Spirals

Introduction 3D magnetization-prepared fast gradient echo MR sequences, such as MP-RAGE [1], have been widely used for 3D brain volumetric imaging due to high spatial resolution and good contrast between white matter and gray matter. However, these techniques usually require long acquisition time, which increases the probability of motion and decreases clinical throughput. There have been sever...

متن کامل

Advanced Motion Correction Methods in PET

With the arrival of increasingly higher resolution PET systems, small amounts of motion can cause significant blurring in the images, compared to the intrinsic resolutions of the scanners. In this work, we have reviewed advanced correction methods for the three cases of (i) unwanted patient motion, as well as motions due to (ii) cardiac and (iii) respiratory cycles. For the first type of ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013