Fantastic Voyage

Here's the overall target area.
Benes's brain.
As near as we can map it stereotaxically.

The clot is right here.
It's impossible to get at
without damage to the intervening tissue,

which would prove fatal to Benes.
The only way to reach it
is via the arterial system.

Phase one calls for
miniaturising a submarine,

with crew and surgical team,
and injecting it into the carotid artery.

How small will it be?
About the size of a microbe.
We're putting Benes in deep hypothermia.

That's freezing him
as low as is compatible with human life.

It'll slow down his heartbeat, circulation
and all other physical processes.

Even so, Colonel, because of our size -
I mean, the lack of it -
we'll still be cruising pretty fast.

We'll be smashed to bits
if there's turbulence.

The only danger of turbulence
is in the heart,

and we're not going through it.
Once in the carotid artery,
we remain within the arterial system
until we reach the point of the damage,

where Dr Duval will attempt
to dissolve the clot with a laser beam.

Thank you.
After the operation,
we return by way of the venous system

until we reach the base of the neck,
where we'll be removed

right here. With a hypodermic.
How will you know
where the sub is at any moment?

Dr Michaels is a circulatory specialist
and will act as your navigator.

He'll know where you are and you can
communicate directly with us by wireless.

Also the sub is nuclear powered. We'll track it
just as we would any radioactive tracer.

There'll be surgeons standing by
to remove you immediately
should anything happen.

In any event,
you must be out within 60 minutes.