Syntax for reading from database

I'm displaying data onscreen from the database with the following code

 {var:read_data17.load_fields.title}

This is working correctly and displaying from the proper field.
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I would like to pull data from the images field, specifically the subfield "image_fulltext_caption" as shown here in the database -
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I just cannot figure out the proper syntax for it to work, I was thinking something like the following -

 {var:read_data26.load_fields2.images."image_fulltext_caption"}

I've tried a couple different things but can't get anything to work

It's JSON encoded so you have to json decode it first.

I am able to display the entire field on screen, just trying to dig a little deeper.
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This is what I have in the custom code
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ID: {var:read_data17.load_fields.id}<br>
Introtext: {var:read_data17.load_fields.introtext}<br>
Created By Alias: {var:read_data17.load_fields.created_by_alias}<br>
Title: {var:read_data17.load_fields.title}<br>
Alias: {var:read_data17.load_fields.alias}<br>
CatID: {var:read_data17.load_fields.catid}<br>
Images: {var.jasonde:read_data17.load_fields.images}

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This is is what it looks like on the front end, I would like to just display the "image_fulltext_caption" field
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Frontend Link

Have you tried adding .image_fulltext_caption to that var call?

Yes, I've tried

{var.jasonde:read_data17.load_fields.image_fulltext_caption}

and

{var.jasonde:read_data17.load_fields.images.image_fulltext_caption}

Just shows up blank

Do it in PHP then.

$images = json_decode($this-get("read_data17.load_fields.images"), true);

return $images["field_you_want"];

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Then use {var:php_name}
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Dont copy paste from forums though type manually

Think I typed it in correctly but I'm just getting a spinning wheel when I execute...
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Sorry $this->get

That did it, thanks!