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