# Support **URL:** https://discourse.slicer.org/c/support/11.md?page=338 [Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md) **Page:** 339 --- ## [STL models comparison](https://discourse.slicer.org/t/stl-models-comparison/11806)
**Author:** [@danila](https://discourse.slicer.org/u/danila)\ **Replies:** 13\ **Last updated:** [June 2, 2020, 5:58pm UTC](https://discourse.slicer.org/t/stl-models-comparison/11806 "2020-06-02T17:58:44Z")
Operating system: macOS Catalina v10.15 Slicer version: 4.10.2 Expected behavior: How to compare and analyse two STL models of the same patients at T1 and T2. Actual behavior: I have done a CBCT superimposition using … --- ## [Brightness and contrast on 3d model on slicer screen](https://discourse.slicer.org/t/brightness-and-contrast-on-3d-model-on-slicer-screen/11818)
**Author:** [@lambrosone](https://discourse.slicer.org/u/lambrosone)\ **Replies:** 19\ **Last updated:** [June 2, 2020, 4:02pm UTC](https://discourse.slicer.org/t/brightness-and-contrast-on-3d-model-on-slicer-screen/11818 "2020-06-02T16:02:11Z")
THE 3D MODEL THAT APPEARS WITH VOLUME RENDERING IS VERY DARK AND CONTRASTY, oops, almost useless. is there a way to juggle those two to make a more useful image? thank you --- ## [Calculation of the Dose Volume Histogram for Primo RT Dose](https://discourse.slicer.org/t/calculation-of-the-dose-volume-histogram-for-primo-rt-dose/11822)
**Author:** [@aseman](https://discourse.slicer.org/u/aseman)\ **Replies:** 1\ **Last updated:** [June 2, 2020, 8:03am UTC](https://discourse.slicer.org/t/calculation-of-the-dose-volume-histogram-for-primo-rt-dose/11822 "2020-06-02T08:03:08Z")
Slicer version: 4.10.1 Hi 3d Slicer Experts and all I want to calculate Dose Volume Histograms for two RT Dose ,which the first has been obtained from Treatment Planning System (TPS), and the second from Mont Carl code… --- ## [Algorithm used for growing seeds](https://discourse.slicer.org/t/algorithm-used-for-growing-seeds/11817)
**Author:** [@flaviu2](https://discourse.slicer.org/u/flaviu2)\ **Replies:** 1\ **Last updated:** [June 1, 2020, 5:55pm UTC](https://discourse.slicer.org/t/algorithm-used-for-growing-seeds/11817 "2020-06-01T17:55:45Z")
Hello everyone. I saw on youtube an interesting liver segmentation done it by growing by seeds: https://www.youtube.com/watch?v=R-lBsqAvSTA (at the ending of the movie is liver segmentation). Is there any way to know wh… --- ## [Ctr-Z-function in Slicer](https://discourse.slicer.org/t/ctr-z-function-in-slicer/4207)
**Author:** [@persst](https://discourse.slicer.org/u/persst)\ **Replies:** 4\ **Last updated:** [June 2, 2020, 12:08am UTC](https://discourse.slicer.org/t/ctr-z-function-in-slicer/4207 "2020-06-02T00:08:51Z")
Operating system: Windows 10 Slicer version: 4.9 Hi! I am segmenting brain tumors from DICOM data and wonder if Slicer has any quick-button to erase your previous action, like Ctr+Z? --- ## [Missing qt library references](https://discourse.slicer.org/t/missing-qt-library-references/11816)
**Author:** [@kayarre](https://discourse.slicer.org/u/kayarre)\ **Replies:** 1\ **Last updated:** [June 1, 2020, 4:18pm UTC](https://discourse.slicer.org/t/missing-qt-library-references/11816 "2020-06-01T16:18:17Z")
it appears the nightly linux build is expecting at qt library that isn’t there. $ ./Slicer-4.11.0-2020-05-30-linux-amd64/Slicer /tools/Slicer-4.11.0-2020-05-30-linux-amd64/bin/SlicerApp-real: error while loading shared … --- ## [Volume rendering not centered](https://discourse.slicer.org/t/volume-rendering-not-centered/11735)
**Author:** [@Henry\_Cope](https://discourse.slicer.org/u/Henry_Cope)\ **Replies:** 15\ **Last updated:** [June 1, 2020, 3:49pm UTC](https://discourse.slicer.org/t/volume-rendering-not-centered/11735 "2020-06-01T15:49:10Z")
Hello, I’m running into an issue where my volume rendering is not centered. I’ve attached a picture of the result that occurs: Ideally, the aorta would be centered within the box. I realize I can click on the center… --- ## [DICOM SEG can not be loaded ](https://discourse.slicer.org/t/dicom-seg-can-not-be-loaded/11653)
**Author:** [@chiarapalu](https://discourse.slicer.org/u/chiarapalu)\ **Replies:** 1\ **Last updated:** [May 31, 2020, 10:17pm UTC](https://discourse.slicer.org/t/dicom-seg-can-not-be-loaded/11653 "2020-05-31T22:17:20Z")
Operating system: Windows Slicer version: 4.11 or 4.10 Expected behavior: Loading of Dicom Segmentation Objects exported from Commercial software BrainLab (Elements) Actual behavior: Error message: Could not load obje… --- ## [From CT to qCT?](https://discourse.slicer.org/t/from-ct-to-qct/11782)
**Author:** [@gsolit](https://discourse.slicer.org/u/gsolit)\ **Replies:** 4\ **Last updated:** [May 31, 2020, 6:51pm UTC](https://discourse.slicer.org/t/from-ct-to-qct/11782 "2020-05-31T18:51:14Z")
Dear all Is there an extension that allows to extract segment statistics for known CT calibration parameters? I would like to extract bone density values instead of HU. Thanks --- ## [Q- Surface area reported from Models: outward facing polys only?](https://discourse.slicer.org/t/q-surface-area-reported-from-models-outward-facing-polys-only/11795)
**Author:** [@hherhold](https://discourse.slicer.org/u/hherhold)\ **Replies:** 2\ **Last updated:** [May 31, 2020, 1:02am UTC](https://discourse.slicer.org/t/q-surface-area-reported-from-models-outward-facing-polys-only/11795 "2020-05-31T01:02:06Z")
I have a quick question on the surface area number reported by the Models module. I did a quick exercise where I made a 5cm sphere (well, as close as I could get by hand using the ruler) and compared reported values to h… --- ## [I cannot DICOM image export with a segment](https://discourse.slicer.org/t/i-cannot-dicom-image-export-with-a-segment/11788)
**Author:** [@11139](https://discourse.slicer.org/u/11139)\ **Replies:** 4\ **Last updated:** [May 31, 2020, 12:50am UTC](https://discourse.slicer.org/t/i-cannot-dicom-image-export-with-a-segment/11788 "2020-05-31T00:50:39Z")
I want to draw contour with dicom image sequence and export them together as DICOM images. I tried to export them but only exported original DICOM image sequence(the image sequence didn’t have any segment（contours）. Pl… --- ## [Poll: Which version of macOS do you use to run Slicer?](https://discourse.slicer.org/t/poll-which-version-of-macos-do-you-use-to-run-slicer/6055)
**Author:** [@jcfr](https://discourse.slicer.org/u/jcfr)\ **Replies:** 6\ **Last updated:** [May 30, 2020, 12:52am UTC](https://discourse.slicer.org/t/poll-which-version-of-macos-do-you-use-to-run-slicer/6055 "2020-05-30T00:52:59Z")
Hi Slicers, We are thinking about updating the minimum supported version of macOS (most likely 10.11 “El Capitan”) but before doing so we would like to have a better idea of what you are all using to run Slicer. Thanks… --- ## [Resize 3d volume](https://discourse.slicer.org/t/resize-3d-volume/11767)
**Author:** [@1116](https://discourse.slicer.org/u/1116)\ **Replies:** 2\ **Last updated:** [May 30, 2020, 12:02am UTC](https://discourse.slicer.org/t/resize-3d-volume/11767 "2020-05-30T00:02:41Z")
If i want to resize 3d volume 256 x 256 x 26 to 184 x 220 x 26 , is it right to use Resample Sacalar/Vector/DWI Volume module? The Original volumes spacing is 1.25 x 1.25 x 4 The reason to resize 3d volume is that I… --- ## [I can't select RT when I select export type](https://discourse.slicer.org/t/i-cant-select-rt-when-i-select-export-type/11784)
**Author:** [@11139](https://discourse.slicer.org/u/11139)\ **Replies:** 0\ **Last updated:** [May 29, 2020, 6:52pm UTC](https://discourse.slicer.org/t/i-cant-select-rt-when-i-select-export-type/11784 "2020-05-29T18:52:54Z")
Hi. I want to make segment with DICOM image sequence and export them together as DICOM image sequence. I tried to export as below figure but couldn’t select RT as export type. I can select only scalar volume. Please t… --- ## [Mapping brain lesions to standard connectome/tractography](https://discourse.slicer.org/t/mapping-brain-lesions-to-standard-connectome-tractography/11783)
**Author:** [@MaxF](https://discourse.slicer.org/u/MaxF)\ **Replies:** 0\ **Last updated:** [May 29, 2020, 6:52pm UTC](https://discourse.slicer.org/t/mapping-brain-lesions-to-standard-connectome-tractography/11783 "2020-05-29T18:52:48Z")
Hello everyone, I am new to the slicer 3d and would like to map brain lesions (structural scans, T1, DWI, T2, dicom format) to visualize interactions with fibre tracts by coregistration with a standard connectome databa… --- ## [Update oversampling factor](https://discourse.slicer.org/t/update-oversampling-factor/11717)
**Author:** [@Queen\_Rei](https://discourse.slicer.org/u/Queen_Rei)\ **Replies:** 4\ **Last updated:** [May 29, 2020, 5:56pm UTC](https://discourse.slicer.org/t/update-oversampling-factor/11717 "2020-05-29T17:56:51Z")
I am currently working on an extension to create a segmentation on start-up. One step in that process is to update the oversampling factor under segmentation geometry from 1.0 to 1.5. I want to know how I can do this in… --- ## [Converting transform.h5 to cmtk .xform](https://discourse.slicer.org/t/converting-transform-h5-to-cmtk-xform/11747)
**Author:** [@HugoTrentesaux](https://discourse.slicer.org/u/HugoTrentesaux)\ **Replies:** 2\ **Last updated:** [May 29, 2020, 3:31pm UTC](https://discourse.slicer.org/t/converting-transform-h5-to-cmtk-xform/11747 "2020-05-29T15:31:07Z")
Is there a builtin way for converting the transform.h5 file made by 3DSlicer to a xform file as produced by cmtk? Here is an example of the same transformation in both formats: \>\> h5read('slicer\_transform.h5', '/Transf… --- ## [Batch resampling](https://discourse.slicer.org/t/batch-resampling/11748)
**Author:** [@HugoTrentesaux](https://discourse.slicer.org/u/HugoTrentesaux)\ **Replies:** 3\ **Last updated:** [May 29, 2020, 11:45am UTC](https://discourse.slicer.org/t/batch-resampling/11748 "2020-05-29T11:45:16Z")
Is there a way to use the transform.h5 file from a script to apply the same transform on a batch of volumes? The easiest way would be directly from bash script like: $ for i in $list; do Slicer resample \\ --transform tr… --- ## [Best way to automatically segment an implant](https://discourse.slicer.org/t/best-way-to-automatically-segment-an-implant/11722)
**Author:** [@Amn3s14](https://discourse.slicer.org/u/Amn3s14)\ **Replies:** 4\ **Last updated:** [May 29, 2020, 1:02am UTC](https://discourse.slicer.org/t/best-way-to-automatically-segment-an-implant/11722 "2020-05-29T01:02:56Z")
Hello, I am looking for the best way to automatically segment a breast implant, or atleast by using minimal user interaction. I have been trying region growing or fast marching approaches with poor success. I am using MR… --- ## [Reproducible Slicer crash on attempted tab completion, on Nightly 2020-01-08](https://discourse.slicer.org/t/reproducible-slicer-crash-on-attempted-tab-completion-on-nightly-2020-01-08/10146)
**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\ **Replies:** 8\ **Last updated:** [May 28, 2020, 11:10pm UTC](https://discourse.slicer.org/t/reproducible-slicer-crash-on-attempted-tab-completion-on-nightly-2020-01-08/10146 "2020-05-28T23:10:56Z")
Running the following code snippet in the python interactor (or a linked Jupyter notebook) and then typing “interp\_f” and hitting the Tab key reproducibly crashes Slicer. from scipy.interpolate import RegularGridInterpo… --- ## [Toggle off volume names](https://discourse.slicer.org/t/toggle-off-volume-names/11753)
**Author:** [@Tommaso\_Di\_Noto](https://discourse.slicer.org/u/Tommaso_Di_Noto)\ **Replies:** 2\ **Last updated:** [May 28, 2020, 5:04pm UTC](https://discourse.slicer.org/t/toggle-off-volume-names/11753 "2020-05-28T17:04:40Z")
Hi All! Is there a quick way to toggle on/off the names below the loaded volumes? They are not very informative in the mosaic view (see image) Thanks in advance! --- ## [Input for vector to scalar volume from jpg not working](https://discourse.slicer.org/t/input-for-vector-to-scalar-volume-from-jpg-not-working/11746)
**Author:** [@Pietro\_Ibba](https://discourse.slicer.org/u/Pietro_Ibba)\ **Replies:** 2\ **Last updated:** [May 28, 2020, 2:23pm UTC](https://discourse.slicer.org/t/input-for-vector-to-scalar-volume-from-jpg-not-working/11746 "2020-05-28T14:23:00Z")
Operating system: Windows 10 Slicer version: 4.10.2 Expected behavior: Actual behavior: I am sorry if this question was already posted. I am trying to reconstruct a 3D model from an MRI series of jpg images, I am fo… --- ## [Exporting values of "angle between two lines" (Q3DC) doesn't work](https://discourse.slicer.org/t/exporting-values-of-angle-between-two-lines-q3dc-doesnt-work/11694)
**Author:** [@Joao\_L](https://discourse.slicer.org/u/Joao_L)\ **Replies:** 18\ **Last updated:** [May 28, 2020, 1:38pm UTC](https://discourse.slicer.org/t/exporting-values-of-angle-between-two-lines-q3dc-doesnt-work/11694 "2020-05-28T13:38:42Z")
Operating system: Slicer version: 5.0 Expected behavior: Exporting values of “angle between two lines” (Q3DC) Actual behavior: Hello. Hope you are fine. Two weeks ago I did export the values that I found by calculati… --- ## [Interpolation between Slices MRI heart model](https://discourse.slicer.org/t/interpolation-between-slices-mri-heart-model/11742)
**Author:** [@Jonathan](https://discourse.slicer.org/u/Jonathan)\ **Replies:** 0\ **Last updated:** [May 28, 2020, 5:31am UTC](https://discourse.slicer.org/t/interpolation-between-slices-mri-heart-model/11742 "2020-05-28T05:31:08Z")
Hi, I am trying to reconstruct a heart model from MRI scans. There are only about 10 slices (short-axis view), so the LV resolution is very coarse. I used the Segmentation Editor to create a 3d model (pics are attache… --- ## [Survey 3D-printing Slicer Software](https://discourse.slicer.org/t/survey-3d-printing-slicer-software/11738)
**Author:** [@JaelW](https://discourse.slicer.org/u/JaelW)\ **Replies:** 1\ **Last updated:** [May 27, 2020, 8:34pm UTC](https://discourse.slicer.org/t/survey-3d-printing-slicer-software/11738 "2020-05-27T20:34:51Z")
Hello 3D-print enthusiasts, We would like to know about your experiences with 3D-printing parameters in your current Slicer. It would be very helpful if you completed this survey. The survey is for educational purposes … --- ## [Accuracy of Intel RealSense D435](https://discourse.slicer.org/t/accuracy-of-intel-realsense-d435/11737)
**Author:** [@qeee](https://discourse.slicer.org/u/qeee)\ **Replies:** 1\ **Last updated:** [May 27, 2020, 6:05pm UTC](https://discourse.slicer.org/t/accuracy-of-intel-realsense-d435/11737 "2020-05-27T18:05:55Z")
Hello, I would like to start experimenting with image guided surgery and I would like to ask about your experience with the accuracy of Intel realsense devices, specifically the D435. Is the navigation accuracy within fe… --- ## [Convert STL to DICOM](https://discourse.slicer.org/t/convert-stl-to-dicom/11640)
**Author:** [@Zehra](https://discourse.slicer.org/u/Zehra)\ **Replies:** 4\ **Last updated:** [May 27, 2020, 11:54am UTC](https://discourse.slicer.org/t/convert-stl-to-dicom/11640 "2020-05-27T11:54:18Z")
Hello, I’ve been using 3D sicer since today. I am very happy to have discovered this program and I hope to solve my problem with it. I have a CAD model of a pacemaker. I need to convert this model as DICOM to be able t… --- ## [Creation of Module (Young's modulus)](https://discourse.slicer.org/t/creation-of-module-youngs-modulus/5822)
**Author:** [@Lorena\_Cardenas](https://discourse.slicer.org/u/Lorena_Cardenas)\ **Replies:** 2\ **Last updated:** [May 27, 2020, 9:54am UTC](https://discourse.slicer.org/t/creation-of-module-youngs-modulus/5822 "2020-05-27T09:54:59Z")
Hi everybody!, well I have to create a module that calculate Young’s modulus of mandible but i don’t know how to start. I have skills in programming on python but i never used VTK. My idea is to first cut the area of in… --- ## [Zoom in linked slices gets out of sync when using ctl+scroll](https://discourse.slicer.org/t/zoom-in-linked-slices-gets-out-of-sync-when-using-ctl-scroll/9994)
**Author:** [@Felipe\_Silveira](https://discourse.slicer.org/u/Felipe_Silveira)\ **Replies:** 5\ **Last updated:** [May 26, 2020, 5:44pm UTC](https://discourse.slicer.org/t/zoom-in-linked-slices-gets-out-of-sync-when-using-ctl-scroll/9994 "2020-05-26T17:44:59Z")
Hi, I noticed that if I have a couple of slice views linked and try to zoom in/out using ctrl+scroll only the slice view in focus is changed. If I later zoom in using right click, all views get synced up again. Is this … --- ## [Error: No image data in input volume #0](https://discourse.slicer.org/t/error-no-image-data-in-input-volume-0/11715)
**Author:** [@TomNB](https://discourse.slicer.org/u/TomNB)\ **Replies:** 1\ **Last updated:** [May 26, 2020, 4:21pm UTC](https://discourse.slicer.org/t/error-no-image-data-in-input-volume-0/11715 "2020-05-26T16:21:00Z")
Hello, I have CT images of the plastic water phantom loaded for orthovoltage dose calculation. The same images were used by my colleagues last year. Surprisingly, I get this error Error: No image data in input volume #… [Previous page](https://discourse.slicer.org/c/support/11.md?page=337) [Next page](https://discourse.slicer.org/c/support/11.md?page=339)