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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index f9fe80e..855fd16 100644
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         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -345,8 +345,8 @@ <h1>Contributor Code of Conduct</h1>
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   "dateCreated": "2024-06-04",
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 }
 
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diff --git a/LICENSE.html b/LICENSE.html
index 7c29d2a..0fcc659 100644
--- a/LICENSE.html
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@@ -262,7 +262,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -396,8 +396,8 @@ <h1>Licenses</h1>
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   "identifier": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/LICENSE.html",
   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
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 }
 
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diff --git a/aio.html b/aio.html
index ef7ada1..f015968 100644
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+++ b/aio.html
@@ -310,7 +310,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-imaging-data-structure-and-formats"><p>Content from <a href="imaging-data-structure-and-formats.html">Imaging Data: Structure And Formats</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/imaging-data-structure-and-formats.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
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@@ -417,7 +417,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
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 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
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+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Here are the screenshots you should see: <img src="fig/aic_imdata_fsl_lthal.png" alt="Left Thalamus" width="800" class="figure"></p>
 <figure><img src="fig/aic_imdata_fsl_rthal.png" alt="Right Thalamus" width="800" class="figure mx-auto d-block"></figure>
@@ -1120,7 +1120,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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 <div class="accordion-body">
 <ul>
 <li>Use <code>fslhd</code> to get information on dimension and voxel
@@ -1137,7 +1137,7 @@ <h4 class="accordion-header" id="headingHint1"> Give me a hint </h4>
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <p><em>Do the T1 and the FLAIR have the same dimension?</em></p>
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@@ -1215,7 +1215,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-structural-mri"><p>Content from <a href="structural-mri.html">Structural MRI: Bias Correction, Segmentation and Image Registration</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/structural-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -1906,7 +1906,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-pet-imaging"><p>Content from <a href="pet-imaging.html">Processing and analysing PET brain images</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/pet-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -2012,7 +2012,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Open up multiple terminal windows to view the .json file contents
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 <div class="accordion-body">
 <p>Pay close attention to the display settings for the window and
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-<div id="collapseHint3" class="accordion-collapse collapse" data-bs-parent="#accordionHint3" aria-labelledby="headingHint3">
+<div id="collapseHint3" class="accordion-collapse collapse" aria-labelledby="headingHint3" data-bs-parent="#accordionHint3">
 <div class="accordion-body">
 <p>You’ll need to look at the .json file for the TAU PET NIfTI file -
 this will contain key information around timing and framing so that you
@@ -2815,7 +2815,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-diffusion-weighted-imaging"><p>Content from <a href="diffusion-weighted-imaging.html">Diffusion-weighted imaging (DWI)</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/diffusion-weighted-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -3411,7 +3411,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-functional-mri"><p>Content from <a href="functional-mri.html">Functional Magnetic Resonance Imaging (fMRI)</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/functional-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -3832,7 +3832,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-command-line"><p>Content from <a href="command-line.html">Extra: Using the Command Line</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/command-line.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -4198,7 +4198,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
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+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>Using <code>cat</code> on a large text file can end up looking
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diff --git a/command-line.html b/command-line.html
index e32de99..60acfda 100644
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Extra: Using the Command Line</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/command-line.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -628,7 +628,7 @@ <h3 class="accordion-header" id="headingSpoiler1">
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   </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
 <div class="accordion-body">
 <p>Using <code>cat</code> on a large text file can end up looking
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@@ -1064,8 +1064,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/diffusion-weighted-imaging.html b/diffusion-weighted-imaging.html
index 7da4586..a6fcf04 100644
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@@ -276,7 +276,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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         <h1>Diffusion-weighted imaging (DWI)</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/diffusion-weighted-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -898,8 +898,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/functional-mri.html b/functional-mri.html
index 77aac02..174a0c5 100644
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Functional Magnetic Resonance Imaging (fMRI)</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/functional-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -727,8 +727,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
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 }
 
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diff --git a/images.html b/images.html
index 46c454e..d171f47 100644
--- a/images.html
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   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
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 }
 
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diff --git a/imaging-data-structure-and-formats.html b/imaging-data-structure-and-formats.html
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@@ -280,7 +280,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Imaging Data: Structure And Formats</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/imaging-data-structure-and-formats.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -385,7 +385,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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   <h3 class="accordion-header" id="headingSpoiler1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div> Let’s look at the output </h3>
 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
 <div class="accordion-body">
 <div class="codewrapper">
 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
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   <h3 class="accordion-header" id="headingSpoiler2">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="eye"></i></div> Let’s look at the output </h3>
 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
 <div class="accordion-body">
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 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Here are the screenshots you should see: <img src="fig/aic_imdata_fsl_lthal.png" alt="Left Thalamus" width="800" class="figure"></p>
 <figure><img src="fig/aic_imdata_fsl_rthal.png" alt="Right Thalamus" width="800" class="figure mx-auto d-block"></figure></div>
@@ -1024,7 +1024,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <ul><li>Use <code>fslhd</code> to get information on dimension and voxel
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 <div class="accordion-body">
 <p><em>Do the T1 and the FLAIR have the same dimension?</em></p>
 <p><strong>No</strong>-Using <code>fslhd</code>, we can see that the
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diff --git a/index.html b/index.html
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diff --git a/instructor/404.html b/instructor/404.html
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         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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         <h1>Licenses</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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diff --git a/instructor/aio.html b/instructor/aio.html
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@@ -312,7 +312,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-imaging-data-structure-and-formats"><p>Content from <a href="imaging-data-structure-and-formats.html">Imaging Data: Structure And Formats</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/imaging-data-structure-and-formats.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 32 minutes</p>
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 <div class="accordion-body">
 <p>If the voxel dimension is the same in all directions (e.g. 1x1x1 mm)
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 <div class="accordion-body">
 <p>Here are the screenshots you should see: <img src="../fig/aic_imdata_fsl_lthal.png" alt="Left Thalamus" width="800" class="figure"></p>
 <figure><img src="../fig/aic_imdata_fsl_rthal.png" alt="Right Thalamus" width="800" class="figure mx-auto d-block"></figure>
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 <div class="accordion-body">
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 <p><em>Do the T1 and the FLAIR have the same dimension?</em></p>
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 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/structural-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 65 minutes</p>
@@ -1924,7 +1924,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 </section></section><section id="aio-pet-imaging"><p>Content from <a href="pet-imaging.html">Processing and analysing PET brain images</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/pet-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 45 minutes</p>
@@ -2031,7 +2031,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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 <div class="accordion-body">
 <p>Open up multiple terminal windows to view the .json file contents
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 <p>Pay close attention to the display settings for the window and
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 <p>You’ll need to look at the .json file for the TAU PET NIfTI file -
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 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/diffusion-weighted-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 12 minutes</p>
@@ -3431,7 +3431,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/functional-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 12 minutes</p>
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 </section></section><section id="aio-command-line"><p>Content from <a href="command-line.html">Extra: Using the Command Line</a></p>
 <hr>
-<p>Last updated on 2024-08-06 |
+<p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/command-line.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 12 minutes</p>
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 <div class="accordion-body">
 <p>Using <code>cat</code> on a large text file can end up looking
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-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/command-line.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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 <div class="accordion-body">
 <p>Using <code>cat</code> on a large text file can end up looking
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         <h1>Diffusion-weighted imaging (DWI)</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/diffusion-weighted-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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         <h1>Functional Magnetic Resonance Imaging (fMRI)</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/functional-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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diff --git a/instructor/imaging-data-structure-and-formats.html b/instructor/imaging-data-structure-and-formats.html
index f00ccfe..9a5bf26 100644
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@@ -280,7 +280,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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         <h1>Imaging Data: Structure And Formats</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/imaging-data-structure-and-formats.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -387,7 +387,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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 </button>
-<div id="collapseSpoiler1" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler1" aria-labelledby="headingSpoiler1">
+<div id="collapseSpoiler1" class="accordion-collapse collapse" aria-labelledby="headingSpoiler1" data-bs-parent="#accordionSpoiler1">
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 <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
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 </button>
-<div id="collapseSpoiler2" class="accordion-collapse collapse" data-bs-parent="#accordionSpoiler2" aria-labelledby="headingSpoiler2">
+<div id="collapseSpoiler2" class="accordion-collapse collapse" aria-labelledby="headingSpoiler2" data-bs-parent="#accordionSpoiler2">
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 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>If the voxel dimension is the same in all directions (e.g. 1x1x1 mm)
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@@ -985,7 +985,7 @@ <h3 class="callout-title">Challenge<a class="anchor" aria-label="anchor" href="#
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+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>Here are the screenshots you should see: <img src="../fig/aic_imdata_fsl_lthal.png" alt="Left Thalamus" width="800" class="figure"></p>
 <figure><img src="../fig/aic_imdata_fsl_rthal.png" alt="Right Thalamus" width="800" class="figure mx-auto d-block"></figure></div>
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 <div class="accordion-body">
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 size.</li>
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 <p><em>Do the T1 and the FLAIR have the same dimension?</em></p>
 <p><strong>No</strong>-Using <code>fslhd</code>, we can see that the
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diff --git a/instructor/index.html b/instructor/index.html
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index e11ddf9..d846360 100644
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         <h1>Processing and analysing PET brain images</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/pet-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
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diff --git a/instructor/reference.html b/instructor/reference.html
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         <h1>Reference</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/learners/reference.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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diff --git a/instructor/structural-mri.html b/instructor/structural-mri.html
index 36c7ad7..2fb745e 100644
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         <h1>Structural MRI: Bias Correction, Segmentation and Image Registration</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/structural-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
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diff --git a/pet-imaging.html b/pet-imaging.html
index 96c1a01..ea350f4 100644
--- a/pet-imaging.html
+++ b/pet-imaging.html
@@ -282,7 +282,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Processing and analysing PET brain images</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/pet-imaging.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -381,7 +381,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint1" aria-expanded="false" aria-controls="collapseHint1">
   <h4 class="accordion-header" id="headingHint1"> Give me a hint </h4>
 </button>
-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Open up multiple terminal windows to view the .json file contents
 side-by-side.</p>
@@ -818,7 +818,7 @@ <h3 class="callout-title">SUVR versus DVR images<a class="anchor" aria-label="an
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint2" aria-expanded="false" aria-controls="collapseHint2">
   <h4 class="accordion-header" id="headingHint2"> Give me a hint </h4>
 </button>
-<div id="collapseHint2" class="accordion-collapse collapse" data-bs-parent="#accordionHint2" aria-labelledby="headingHint2">
+<div id="collapseHint2" class="accordion-collapse collapse" aria-labelledby="headingHint2" data-bs-parent="#accordionHint2">
 <div class="accordion-body">
 <p>Pay close attention to the display settings for the window and
 colormap.</p>
@@ -846,7 +846,7 @@ <h3 class="callout-title">Create a Tau PET SUVR image<a class="anchor" aria-labe
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint3" aria-expanded="false" aria-controls="collapseHint3">
   <h4 class="accordion-header" id="headingHint3"> Give me a hint </h4>
 </button>
-<div id="collapseHint3" class="accordion-collapse collapse" data-bs-parent="#accordionHint3" aria-labelledby="headingHint3">
+<div id="collapseHint3" class="accordion-collapse collapse" aria-labelledby="headingHint3" data-bs-parent="#accordionHint3">
 <div class="accordion-body">
 <p>You’ll need to look at the .json file for the TAU PET NIfTI file -
 this will contain key information around timing and framing so that you
@@ -1155,8 +1155,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/pet-imaging.html",
   "identifier": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/pet-imaging.html",
   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
+  "dateModified": "2024-08-13",
+  "datePublished": "2024-08-13"
 }
 
   </script><script>
diff --git a/pkgdown.yml b/pkgdown.yml
index 85bc60d..3b26321 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,4 +2,4 @@ pandoc: 3.1.11
 pkgdown: 2.1.0
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-08-06T00:22Z
+last_built: 2024-08-13T00:23Z
diff --git a/profiles.html b/profiles.html
index 393a75c..8bfd81e 100644
--- a/profiles.html
+++ b/profiles.html
@@ -299,8 +299,8 @@ <h1>Learner Profiles</h1>
   "url": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/profiles.html",
   "identifier": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/profiles.html",
   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
+  "dateModified": "2024-08-13",
+  "datePublished": "2024-08-13"
 }
 
   </script><script>
diff --git a/reference.html b/reference.html
index e666111..1f60537 100644
--- a/reference.html
+++ b/reference.html
@@ -262,7 +262,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Reference</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/learners/reference.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -338,8 +338,8 @@ <h1>Reference</h1>
   "url": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/reference.html",
   "identifier": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/reference.html",
   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
+  "dateModified": "2024-08-13",
+  "datePublished": "2024-08-13"
 }
 
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diff --git a/structural-mri.html b/structural-mri.html
index d991900..8768b1c 100644
--- a/structural-mri.html
+++ b/structural-mri.html
@@ -279,7 +279,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Structural MRI: Bias Correction, Segmentation and Image Registration</h1>
-        <p>Last updated on 2024-08-06 |
+        <p>Last updated on 2024-08-13 |
 
         <a href="https://github.com/HealthBioscienceIDEAS/aaic2024-neuroimaging-workshop/edit/main/episodes/structural-mri.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -966,8 +966,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/structural-mri.html",
   "identifier": "https://HealthBioscienceIDEAS.github.io/aaic2024-neuroimaging-workshop/structural-mri.html",
   "dateCreated": "2024-06-04",
-  "dateModified": "2024-08-06",
-  "datePublished": "2024-08-06"
+  "dateModified": "2024-08-13",
+  "datePublished": "2024-08-13"
 }
 
   </script><script>