Manu Francis

11 Questions 4 Answers 0 Followers

Questions related from Manu Francis

How to extract connected nodes from weighted undirected graph based on the weight of the edges?

Hi, I have a graph as in attached figure. I have to extract connected nodes from graph based on edge weights. If edge weight is less than a certain threshold, we have to consider that there will...

06 December 2021 2,295 3 View

How group nodes if a path exists between nodes in the main graph?

Hi, If I have some nodes coordinates and I have to group these nodes together if there is path exist between them. Is there any algorithm available? The main graph structure looks as in attached...

21 October 2021 2,943 1 View

How can I find and plot the gamma source energy distribution in SPECT simulation by using GATE?

Hi, I tried to simulate the SPECT system with GATE and I could visualize interactions in the detector. However, I would like to visualize source energy distribution too. I tried to simulate a...

01 July 2020 2,681 1 View

How to edit the single phase UDF for a multiphase case?

In the first case (single phase case) liquid enters the tube and absorbs heat energy which is produced by the solid region. There is no phase change happening here. The following UDF is used to...

08 January 2020 5,966 1 View

Is it possible to use STIR to reconstruct image for SPECT system with multipinhole arrays as collimator?

Hi, I am trying to do 3D reconstruction with SPECT system having multi-pinhole arrays as collimators. Can I use STIR to reconstruct 3D objects? Will it be possible to specify collimator structure...

05 November 2019 6,132 1 View

How to generate sinogram from multi-pinhole SPECT scanning for filtering?

Hi, I am trying to generate sinogram from scanned images of multi-pinhole SPECT system. After filtering I am trying to reconstruct object volumetrically and not slice by slice. Can anyone reply?...

18 September 2018 2,021 3 View

How can I find Point Spread Function and Modulation Transfer function of multipinhole SPECT?

Hi, I am trying to find PSF(point spread function) and MTF(modulation transfer function) of multipinhole SPECT. Pinholes are arranged in such a way that, there is no overlapping between...

20 June 2018 6,057 1 View

How can I calculate probability matrix for MLEM based SPECT reconstruction?

Hi, I am trying to implement MLEM algorithm for SPECT image reconstruction in 3D. But I am confused with probability matrix. How can I calculate probability matrix? Thanks in advance Manu

25 January 2018 2,444 3 View

How can I implement cone voxel tracing algorithm?

Hi, I have a 3D cube with 128x128x128 voxels. If a cone with known details, pass through the 3D cube, how can I find with which voxels, this cone intersects? The attached image shows the...

08 January 2018 7,591 2 View

Are there any publications regarding thermal profile of cancerous cells in oral cavity?

As part of my thesis topic, I need to know the variations in thermal profile of normal cell and cancerous cell in oral cavity. I need to know ,are there any publications regrading thermal profile...

22 January 2014 8,676 2 View

Are there oral cavity thermal image databases available?

As a part of my M.tech thesis, I need some thermal images of oral cavities. Is there any database for oral thermal images?

16 January 2014 3,926 1 View