Table 4.

Relative energy spectra of photons emergent in the transaxial direction from prostate seeds, derived from HPGe spectrometry

		Energy keV	125I seeda	125I+ 0.053 Ag Kx seedb	125I+ 0.094 Ag Kx seedc	125I+ 0.195 Ag Kx seedd	125I+ 0.181 Pd Kx seede	103Pd seedf
125I emissions	γ	35.49	0.0521	0.0493	0.0472	0.0419	0.0426
	Te Kβ2,4	31.70	0.0347	0.0329	0.0315	0.0280	0.0285
	Te Kβ1,3,5	30.98	0.1556	0.1473	0.1410	0.1253	0.1274
	Te Kα1	27.473	0.4981	0.4717	0.4512	0.4009	0.4079
	Te Kα2	27.202	0.2595	0.2458	0.2351	0.2089	0.2126
Ag K x rays	Kβ2,4	25.46		0.0024	0.0043	0.0089
	Kβ1,3,5	24.94		0.0094	0.0166	0.0345
	Kα1	22.163		0.0281	0.0499	0.1034
	Kα2	21.990		0.0131	0.0232	0.0482
Pd K x rays	Kβ2,4	24.30					0.0068
	Kβ1,3,5	23.81					0.0308
	Kα1	21.177					0.1003
	Kα2	21.020					0.0431
103Pd emissions	γ	39.76						0.0016
	Rh Kβ2,4	23.17						0.0321
	Rh Kβ1,3,5	22.72						0.1731
	Rh Kα1	20.216						0.5620
	Rh Kα2	20.074						0.2312
Mean Energy (keV)			28.51	28.21	27.97	27.39	27.28	20.74

^aAssumed for Nycomed-Amersham 6702, North American Scientific / Mentor IoGold (MED3631-A/M), Bebig / UroMed Symmetra I-125, International Brachytherapy Intersource¹²⁵, SourceTech Medical STM1250, Best Medical International I-125.

^bAssumed for Implant Sciences I-Plant.

^cAssumed for DraxImage BrachySeed.

^dAssumed for Nycomed-Amersham 6711, International Isotopes Inc. / Imagyn IsoSTAR, Mills Biopharmaceuticals / UroCor ProstaSeed, Eurotope I-125, IsoAid I-125.

^eAssumed for Syncor PharmaSeed.

^fAssumed for Theragenics / Indigo Medical TheraSeed 200, North American Scientific PdGold (MED3633), International Brachytherapy InterSource¹⁰³, Bebig, Best Medical International Pd-103.