Acqusition and Analysis Pipeline

optimized protocol for micro-strucutre and connectivity analysis

 

1. Acquistion

Optimized acquisition protocols were implemented 3T scanners of GE, Siemens and Philips for CHARMED, AxCaliber and ActiveAx. The recommended protocol for each framework is provided in the table below. Expension of AxCaliber to AxCaliber3D will be provided in begining of 2013.

 

	CHARMED *	AxCaliber *	ActiveAx **
Matrix Size	80x80	128x128	128x128
Resolution (mm)	2.4x2.4x3.0	1.5x1.5x3.0	1.8x1.8x3.9
Max Gradient (G/cm)	~4	~4	~4
Δ/δ (ms)	38/32	(88,68,48,28)/21	(70,15,70)/15
TR/TE (ms)	17000/90	6000/137	6000/122
Max b (s/mm2)	4000	4000	500, 700, 2770, 2880
Brain Coverage	Full	Single Slice	Full
Gradient Scheme	3 at b=0; 6 at b=1000; 15 at b=2500; 16 at b=4000	Single direction Perpendicular to the CC. 28 b value incremented linearly from 0 to 4000	90 directions per each b value

* Protocols are available here. For additional details you may contact Yaniv Assaf

** Protocols are available here. For additional details you may contact Danny Alexander

 

 

2. Software

Below are links to software that contains tools to analyze the abovementioned acqusition frameworks.

Connectivity/Tractography tools

Micro-structure tools