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Scanning X-Ray Films

So Recently - because of binge running - I ended up with pain in my right thigh. So I had to visit an orthopedic doctor who diagnosed me with a pulled sciatica. We got an X-Ray done to make sure it wasn't the spine that was digging into the nerve to cause pain. It wasn't. No I usually digitize my medical records myself - the prescriptions and lab reports. This time I had an X-Ray film that I needed to scan with a regular scanner.
Drawing inspiration from here is what I got:

Trial 1: Regular scan on Epson L550. Regular settings

Trial 2: My friend has a Lenovo yoga 500 laptop - the one whose screen can be
flipped 360 degrees and turned into a tablet PC. I did just that and used it as a backlight
for the X-Ray film. I created a 1920x1080 sized image in mspaint with nothing but white in it.
I used IrfanView to display the image fullscreen and placed the laptop over the X-Ray film on the scanner.
Performed the scan with regular settings and got immediately improved results!
All I needed to do was to somehow remove the magenta and light green lines caused by scanning the screen.
Some sort of diffuser was needed.

Lenovo yoga 500 as a backlight
Lenovo Yoga 500 as backlight

Trial 3: Used a copier paper as a diffuser between the tablet PC screen and X-Ray: No Joy

75 gsm copier paper as diffuser

Trial 4: Used "Clear Plastic Folder Sheet" as diffuser between the X-Ray and backlight (Tablet Pc screen) :  Perfect

Folder sheet as diffuser