如何为MPR计算dicom切片之间的空间？ [英] How to calculate space between dicom slices for MPR?

问题描述

基于Dicoms显示 MPR视图。我用一系列dicom文件制作了3D阵列。我从 Coronal 和 Sagittal 侧面展示它。

Due to showing MPR view based on Dicoms. I've made a 3D array from series of dicom files. And I show it from Coronal and Sagittal sides.

My 3D array includes: 

 - z = count of dicoms
 - c = column value for every dicoms
 - r = Row value for every dicoms

但是我有一个问题。当切片之间有一定间隔时，以这种方式制作的图像将无法显示正确的视图。因为我无法想到它们之间的模拟距离！

But I have a problem. When there is some space between slices, image is made by this way doesn't show a correct view. Because I can not think of simulation distance between them!

我不知道如何计算切片之间的空间？我想在切片之间添加额外的空间。例如，如果切片之间的间隔为4，则我必须添加4个时间z内部切片。

I don't know how to calculate space between slices? I want to add extra space between slices. for example, If space between slices is 4. I have to add 4 time z inner slices.

我希望得出平均值。

推荐答案

DICOM具有一个称为切片间间距（0018，0088）的属性，该属性给出两个相邻切片之间的距离（垂直于图像平面），并且还具有称为切片厚度（0018，0050）的属性，它给出了成像切片的厚度（图像平面位于切片的中心，一半的体积在平面的上方，一半的体积在平面的下方）。图像位置（患者）（0020，0032）和图像方向（患者）（0020，0037）也是计算切片之间空间关系的有用属性。

DICOM has an attribute called Spacing Between Slices (0018, 0088) that gives the distance between two adjacent slices (perpendicular to the image plane) and it also has an attribute called Slice Thickness (0018, 0050) that gives the thickness of the imaged slice (the image plane exists at the center of the slice, with half of the volume above the plane and half below). Image Position (Patient) (0020, 0032) and Image Orientation (Patient) (0020, 0037) are also useful attributes for computing spatial relationships between slices.

更多详细说明，请参阅DICOM标准第3部分C.7.6.2节第部分。 （第409页）

For a more detailed explanation, see section C.7.6.2 of part 3 of the DICOM standard. (p. 409)

警告：请注意，不同的供应商使用相同 dicom标签来解决不同的问题东西。例如，属性片间间距（0018，0088）表示两个不同项，具体取决于供应商。请参阅此表以获取指南，以及< a href = http://mriquestions.com/cross-talk.html# rel = nofollow noreferrer>此线程以获取解释。

WARNING: Please be aware that different vendors use the same dicom tags for addressing different things. For instance, the attribute Spacing Between Slices (0018, 0088) means two different things depending on the vendor. See this table to have a guide, and this thread for an explanation.

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