<p>首先,您需要确定图像在第四维度中的存储顺序。在</p>
<p>标题可能会有帮助:</p>
<pre><code>print(a.header)
</code></pre>
<p>接下来,要只保留一个模态,您可以使用以下方法:</p>
^{pr2}$
<p><strong>编辑1:</strong></p>
<p>根据挑战网站:</p>
<blockquote>
<p>All BraTS multimodal scans are available as NIfTI files (.nii.gz) and
describe a) native (T1) and b) post-contrast T1-weighted (T1Gd), c)
T2-weighted (T2), and d) T2 Fluid Attenuated Inversion Recovery
(FLAIR) volumes, and were acquired with different clinical protocols
and various scanners from multiple (n=19) institutions, mentioned as
data contributors here.</p>
</blockquote>
<p>以及</p>
<blockquote>
<p>The provided data are distributed after their pre-processing, i.e.
co-registered to the same anatomical template, interpolated to the
same resolution (1 mm^3) and skull-stripped.</p>
</blockquote>
<p><strong>因此,在这种情况下,报头没有帮助(由于预处理,所有模式的维数都相等)。</strong></p>
<p>如果您正在寻找对比后T1加权(T1Gd)图像,则它是第二维度,因此请使用:</p>
^{3}$
<p>此外,我们可以可视化每个3D卷<code>(data[:,:,:,0], data[:,:,:,1],data[:,:,:,2], data[:,:,:,3])</code>并验证我的语句。在</p>
<p>请看这里:<a href="https://gofile.io/?c=fhoZTu" rel="nofollow noreferrer">https://gofile.io/?c=fhoZTu</a></p>