It woula sanoreir uudec
most experimental conaittons
the niuiine dose,
aredict viological effect.
Om
this assurztion,
multipliec by approximately 1.5 in orcer
of a yviven air dose from a
“point source”
obilateraily.
tne:
Furthermore,
sources
larce anical body
Lean yeenetry delivered
§
a:
However,
the
total
f
delivers
a
raziatiin
Situation iS teCtet
than by plene geometry.
the airtterence
ia aoserption of enersy
taroughout a
thus injury (in the letnal raaze) to the important tarr2t
the hernatopoletic stem cell,
Will regenerate.
which ceteraines whethec
the bone farr.~<
These eepth-dose curves are determined in uait density
using small Sievert charters
phantons.
thes
hn ar
shows depth-dose curves for siffercent types of radiation tz
provide an idea of
material
te
the
larpely at a prazing angle.
call,
their effects
‘1
spherically distributed
to conpare
r
to
Sivure 9
than dose
air dose value should be
o
is not identical either
approximated by solid
cather
in
the better cemmon parsueter in terns of wrich 2
eo
measuteu in air, would be
that
these circumstances ana
}-
clinic vor laboratory.
implanrea at 9 cm intervals
Y
The doses are @xprassea
aS percent of
Curve A represents
the
depth-dose curve
ecmmonly used energy of
in
tne
thie entrance air dose.
frye 250 «vp x ray.
radiation in aninel studies.
Note,
This
is a
the surcace
dese is #59uf 405 zgreater tran the entrances air dose and this talls off
very
ri iilv with Septna
an
lac
tlesue
4s
corresponcing to waa it woula be Su. of
target ceil,
the
regeneration.
bones,
Since
2000 <Yp x ray.
covalt-50 gamma
bene Marrow was
energy Geposites
factor.
The
cucvs
L
im the 1ici.--
tne entrance to the important
hemopotetic stem call,
the amceunt of
by a very larga
lant aporearuately
ich determines bone marrow
cistribeted
in
throuphout the bouy
tre henopoteric stem cell
Shows 2a
in 2:
vwsrie:
similar cepth-vose curve fur
Curve C is the initiil beth janma radiation and curve 2D is
radiation.
It Ls evizent
that tor
the
same air douse,
Jury to Reratopoletic stem cells scattered throughout the bone marrow
wacie.
lethal
sag ted
onsi erably and
dose
curves.
thus would be
expected
to result ia different