Re: Airport and Building X-Ray machines and Digital Cameras

Roger N. Clark (change username to rnclark) wrote:

> ... But the original
> hospital X-ray machine should not have had x-rays leaking out,
> or did you put it in the machine?

The X-ray machine in this case was not a diagnostic machine
but a treatment machine. It puts out very much higher energy
X-rays than are used for diagnostics in order to damage the
nuclei of cancer cells in such a way that they are unable
to divide and reproduce.

The patient lies on a table and the machine rotates around
and underneath him, shooting rays from different angles and
with different focal lengths and apertures in order to
deliver the maximum dosage to the tumor and the minimum
dosage to healthy tissue around it. The idea is that, by
focusing on the tumor and moving the emitter, the entry and
exit beams pass through different parts of the body giving
each a relatively low dose, while the tumor at the focal
point gets the full dose no matter what angle the emitter
is at.

Unfortunately, my briefcase with the camera inside was off
to one side of the table and must have gotten zapped when
the X-ray emitter was aiming from the other side of the table.

The entire treatment room is lead shielded to protect the
rest of the hospital.

To answer Richard's questions:

The CCD was NOT damaged. The camera continues to take pictures
with no problem. But the LCD display on the back no longer
works. This means I've got no menus and can't do anything
with the camera that requires them. Fortunately, the camera
has an optical viewfinder, so I can still take photos - albeit
with much restricted controls.

Alan

.

Relevant Pages

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