Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2017131594) ALL DIGITAL MULTI-CHANNEL RF TRANSMITTER FOR PARALLEL MAGNETIC RESONANCE IMAGING WITH SSB MODULATION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2017/131594 International Application No.: PCT/TR2016/050021
Publication Date: 03.08.2017 International Filing Date: 28.01.2016
IPC:
G01R 33/36 (2006.01) ,G01R 33/483 (2006.01) ,G01R 33/561 (2006.01) ,G01R 33/565 (2006.01)
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
20
involving magnetic resonance
28
Details of apparatus provided for in groups G01R33/44-G01R33/6496
32
Excitation or detection systems, e.g. using radiofrequency signals
36
Electrical details, e.g. matching or coupling of the coil to the receiver
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
20
involving magnetic resonance
44
using nuclear magnetic resonance (NMR)
48
NMR imaging systems
483
with selection of signal or spectra from particular regions of the volume, e.g. in vivo spectroscopy
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
20
involving magnetic resonance
44
using nuclear magnetic resonance (NMR)
48
NMR imaging systems
54
Signal processing systems, e.g. using pulse sequences
56
Image enhancement or correction, e.g. subtraction or averaging techniques
561
by reduction of the scanning time, i.e. fast acquiring systems, e.g. using echo-planar pulse sequences
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33
Arrangements or instruments for measuring magnetic variables
20
involving magnetic resonance
44
using nuclear magnetic resonance (NMR)
48
NMR imaging systems
54
Signal processing systems, e.g. using pulse sequences
56
Image enhancement or correction, e.g. subtraction or averaging techniques
565
Correction of image distortions, e.g. due to magnetic field inhomogeneities
Applicants:
ASELSAN ELEKTRONIK SANAYI VE TICARET ANONIM SIRKETI [TR/TR]; Mehmet Akif Ersoy Mahallesi 296 Cadde. No:16 06370 Yenimahalle/Ankara, TR
Inventors:
SEN, Bulent; TR
SAGCAN, Filiz Ece; TR
DOĞAN, Aylin; TR
Agent:
DESTEK PATENT, INC.; Konak Mah. Lefkose Cad. NM Ofis Park B Blok No:36/5 Besevler 16110 Nilufer/Bursa, TR
Priority Data:
Title (EN) ALL DIGITAL MULTI-CHANNEL RF TRANSMITTER FOR PARALLEL MAGNETIC RESONANCE IMAGING WITH SSB MODULATION
(FR) ÉMETTEUR RF MULTICANAL TOUT NUMÉRIQUE POUR IMAGERIE À RÉSONANCE MAGNÉTIQUE PARALLÈLE À MODULATION BLU
Abstract:
(EN) In the present invention, an all digital, multi channel RF transmitter is introduced for parallel magnetic resonance imaging (MRI) device. MRI signal generation, modulation and amplification are employed all-digital in the proposed RF transmitter, which enables to reconfigure each transmit channel easily and individually, in amplitude and phase. Individual channel control ensures homogeneous magnetic field in the multi channel RF coil in MRI. Besides the homogeneous magnetic field generation, multi-frequency MRI signal generation is made easy by the present invention with very high frequency resolution. Multi frequency enables faster image acquisition which reduces MRI operation time. Digital Weaver Single Side Band (SSB) modulation is also incorporated into the all digital transmitter to suppress unwanted band of Double Side Band (DSB) MRI signal. The power amplifier in the MRI transmitter does not amplify the unwanted band so that SSB modulation leads to higher power efficiency.
(FR) Selon la présente invention, un émetteur RF multicanal tout numérique est présenté pour un dispositif d'imagerie à résonance magnétique (IRM) parallèle. La génération, la modulation et l'amplification de signaux d'IRM sont employées de manière complètement numérique dans l'émetteur à RF selon l'invention, qui permet de reconfigurer chaque canal d'émission facilement et individuellement, en amplitude et en phase. La commande de canal individuel assure un champ magnétique homogène dans la bobine à RF multicanal en IRM. En plus de la génération de champ magnétique homogène, la génération de signaux d'IRM multifréquence est facilitée par la présente invention avec une résolution à très haute fréquence. La multifréquence permet une acquisition d'image plus rapide qui réduit le temps d'utilisation d'IRM. La modulation à bande latérale unique (BLU) à tisseur numérique est également incorporée dans l'émetteur tout numérique pour supprimer une bande indésirable de signaux d'IRM à bande latérale double (BLD). L'amplificateur de puissance dans l'émetteur d'IRM n'amplifie pas la bande indésirable de sorte que la modulation à BLU conduit à un rendement de puissance supérieur.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US20180109411