![]() Heavily T2W 3D-SPACE Images for Evaluation of Cerebrospinal Fluid Containing Spaces. Post contrast T1 SPACE is also more useful than T1 MPRAGE in assessing leptomeningeal abnormalities 5.Ĭentral nervous system (CNS) imaging: especially of the CSF spaces or in multiple sclerosis 1 T1 SPACE sequence is superior than T1 MPRAGE in detecting lesions in dural and sulcal spaces because it is able to suppress normal blood vessel signals in these areas. This sequence provides high sensitivity to low gadolinium concentration, and is considered less sensitive to susceptibility 4, flow, and chemical shift artifacts, making it superior to conventional turbo spin echo. SPACE is able to produce high resolution isotropic images that can be reconstructed in multiple planes. It uses non-selective, short refocusing pulse trains that consist of radiofrequency pulses with variable flip angles, allowing for very high turbo factors (>100) and high sampling efficiency. ![]() Images are obtained within a clinically acceptable time frame and without specific absorption rate limitations. It is useful in acquiring high resolution three-dimensional datasets with contrasts similar to those obtained from two-dimensional T1-weighted, T2-weighted, proton density, and dark fluid protocols at 1.5 T and 3 T. ![]() The SPACE sequence is a single slab three-dimensional turbo spin echo (TSE) sequence with a slab selective, variable excitation pulse. SPACE is an abbreviation for Sampling Perfection with Application optimized Contrast using different flip angle Evolution. You can always ask an expert in the Excel Tech Community or get support in the Answers community.The SPACE MRI sequence, is a spin echo type MRI sequence, which creates high spatial resolution three-dimensional datasets. In addition, you could use =SEQUENCE(5,1,1001,1000) to create the sequential list of GL Code numbers in the examples. Here's an example of nesting SEQUENCE with INT and RAND to create a 5 row by 6 column array with a random set of increasing integers. If you need to create a quick sample dataset, here's an example using SEQUENCE with TEXT, DATE, YEAR, and TODAY to create a dynamic list of months for a header row, where the underlying date will always be the current year. If you close the source workbook, any linked dynamic array formulas will return a #REF! error when they are refreshed. For more details, see this article on spilled array behavior.Įxcel has limited support for dynamic arrays between workbooks, and this scenario is only supported when both workbooks are open. ![]() If your supporting data is in an Excel table, then the array will automatically resize as you add or remove data from your array range if you're using structured references. This means that Excel will dynamically create the appropriate sized array range when you press ENTER. The SEQUENCE function will return an array, which will spill if it's the final result of a formula. In the example above, the array for our SEQUENCE formula is range C1:G4. If you omit the rows argument, you must provide at least one other argument.Īn array can be thought of as a row of values, a column of values, or a combination of rows and columns of values. Any missing optional arguments will default to 1. ![]()
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