Hi Gordon, I don't know if you are on the hcp-users list or not, but this looks like a question for you :)
Thanks, Matt. On 7/5/13 10:06 AM, "Reiß-Zimmermann, Martin" <[email protected]> wrote: >Dear all, > >I tried implementing and converting the HCP dMRI-sequences for our TRIO. >I followed the suggestions in the Appendix I and with minor modifications >(2 mm isotropic) it works well with MB3 and the MDDW-gradient table (60 >directions). > >However, when I use the HCP gradient table the measurement stops at >reproducable stops within the sequence (see following) and always with >the same error (hope I can translate that somehow from German into >English): >Error in gradient amplifier, GPA not ready. duty cycle is to high. Please >check sequence parameters. > >The sequences always stop at these points: > >95dir-dMRI: direction number 47 (-1.000 , -0.001 , -0.011) >96dir-dMRI: direction number 75 (-0.094 , 0.992 , -0.082) >97dir-dMRI: direction number 55 (-0.134 , -0.975 , 0.180) > >The images before look great! > >I took a look at the page of Emmanuel Caruyer - but if I create a >gradient table of 90 dir (the HCP 96dir-table seems to have 6 b0 and the >rest b1000-3000, the E.C.-table seems to encode b>0 values, right?) it is >totally different from the HCP one. > >I also read the note in the HCP gradient table that these gradients are >customized for the Connectome-Scanner. > >So my question is: Shall I just use one created on Emmanuel's page or can >I (or better: someone else) change the one from HCP? > >The Appendix I also mentions that the dMRI-sequence has been successfully >tested on a TRIO and Verio with 1.5 mm isotropic resolution (and b2000). >Is it possible that you could post the protocol (including the gradient >table). > >Thank you very much. Best regards, >Martin >____________________________________________________ >Dr. med. Martin Reiss-Zimmermann >Abteilung für Neuroradiologie >Universitätsklinikum Leipzig AöR >Liebigstr. 20 >04103 Leipzig > >Mail: [email protected] >Fon: +49 - 341 - 97 17 585 >Fax: +49 - 341 - 97 17 490 >Net: http://www.neuroradiologie-leipzig.de >.......................................................................... >.......................................................................... >.................................................... >Universitätsklinikum Leipzig - Anstalt öffentlichen Rechts | >Aufsichtsratsvorsitzender: Prof. Dr. Wolfram Knapp >Medizinischer Vorstand und Sprecher: Prof. Dr. med. Wolfgang E. Fleig | >Kaufmännischer Vorstand: Dipl.-Kfm. Ekkehard Zimmer >Sitz: Liebigstraße 18, 04103 Leipzig | Telefon +49-341-971709 | St.Nr.: >23114904074 | IK: 261401052 >Bankverbindung: Deutsche Bank | BLZ: 86070000 | Kto.: 1247998 | >Swift-Code: DEUTDE8L | IBAN: DE27860700000124799800 >Internet: www.uniklinikum-leipzig.de > >Universität Leipzig | Ritterstr. 26, 04109 Leipzig | Körperschaft des >Öffentlichen Rechts | Vertreten durch die Rektorin Prof. Dr. Beate >Schücking >Zuständige Aufsichtsbehörde: SMWK, Wigardstr. 17, 01097 Dresden, >www.smwk.de >Umsatzsteuer-Identifikationsnummer gemäß §27a Umsatzsteuergesetz DE >141510383 > >Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte >Informationen. Sollten Sie nicht der richtige Empfänger sein oder Sie >haben diese E-Mail irrtümlich erhalten, informieren Sie uns bitte sofort >und vernichten diese E-Mail. Das unerlaubte Kopieren sowie die unbefugte >Weitergabe dieser E-Mail und der darin enthaltenen Informationen ist >nicht gestattet. > >_______________________________________________ >HCP-Users mailing list >[email protected] >http://lists.humanconnectome.org/mailman/listinfo/hcp-users ________________________________ The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
