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Med_Imager


Ryerson University

Attivo dal 2012

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Domanda


Read / Output one pixel value from a 4D Matrix
Hi, I have a 4D matrix (128x128x2x96) lets call it 'A' and I want to test the pixel stability throughout all 96 reps. I need ...

oltre 11 anni fa | 1 risposta | 0

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Domanda


Normalization by an unaffected hemisphere of a brain to the affected hemisphere
Hi, I have few images of a brain (128x128x12) where I have affected one hemisphere of the brain by a certain method and I wan...

oltre 12 anni fa | 0 risposte | 0

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Domanda


Size of a kernel
Hi I have MR data acquired at 3.8x3.8x8.0 mm resolution. First I load it in to Matlab and then do some Gaussian filtering. ...

oltre 12 anni fa | 1 risposta | 0

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Domanda


Filtering to increase SNR
I have a bunch of images that have been generated after some calculations. The images were originally acquired from a 3T MRI. ...

oltre 12 anni fa | 1 risposta | 0

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Domanda


Medical Imaging Question- Mean inside a masked image
Hi, I Am trying to compute the mean values within the brain. I created a binary Mask of the brain. And I am computing my mea...

oltre 12 anni fa | 1 risposta | 0

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Domanda


Insert Degree Symbol in Axes Title
Hello Anyone know how to display the degree symbol ° in the title on a plot? Also want to know how to display it on the top of ...

oltre 12 anni fa | 4 risposte | 3

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Domanda


Calculate SNR pixel-by-pixel
I am trying to figure out the Signal to Noise Ratio (SNR) in an image matrix (64x64x16). (called Image_Matrix_3D in the code) ...

oltre 12 anni fa | 1 risposta | 0

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Domanda


Mean of a bunch of slices
% -----------------Step 3 -Masking the PCASL Files PCASL_Files_Masked= PCASL_Files.*Human_Mask; %apply the mask. P...

oltre 12 anni fa | 2 risposte | 0

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Domanda


Efficient way of preallocating memory
Hello, Just wondering is there a better way to preallocate memory for a bunch of 4D arrays. Because so far the way I am doin...

oltre 12 anni fa | 2 risposte | 0

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Domanda


help with the montage function
Hello! I am having trouble with the montage function. I have a 3D matrix of 256 x 256 x 10. After reading this ( <http://w...

quasi 13 anni fa | 1 risposta | 0

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Risposto
Creating a 3D array out of multiple 2D arrays
You can also do Mask_3D(:,:,1)=Mask_1 for index=1:10 eval(['Mask_3D(:,:,index)=Mask_' num2str(index)';']); en...

quasi 13 anni fa | 3

Domanda


Creating a 3D array out of multiple 2D arrays
I have 10 masks that are 256 x 256 each. These masks are for 10 respective slices, so I want to combine them and make a 3D arra...

quasi 13 anni fa | 3 risposte | 1

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Domanda


Deleting a a part of a dimension in a 4D array
Hi, I have a 4D array of MR images that are 64 x 64 x 128 x 16. side=64 # of images=128 # of slices in one image=16 I ...

quasi 13 anni fa | 2 risposte | 0

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Risposto
Resizing a stamp size 64X64 dicom image to 256X256
Thank you Sean and Anton! Anton, that was very useful info! I used the wrong word "resolution'. I just need to re-size the image...

quasi 13 anni fa | 0

Domanda


Resizing a stamp size 64X64 dicom image to 256X256
Does anyone have any ideas on the best way to resize a 64X64 dicom to a 256X256 dicom. I need to do ROI analysis, hence I need a...

quasi 13 anni fa | 2 risposte | 0

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Domanda


Seperating a montage/mosaic of DICOM images in to individual slices
HI, I have a 3D matrix of 256 X 256 X 128 (means 128 images of 256 X 256 resolution). Within one of these images there are 10...

quasi 13 anni fa | 0 risposte | 0

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