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Radionuclide Dosimetric Data Sheets
Lutetium-177m
Summary data
General
Classification
Isotope: Lu-177m
Atomic number (Z): 71
Mass number (A): 177
Neutron number (N): 106
Radioactive decay
Decay modes: β-, Internal transition
Half-life: 160.4 [d]
Decay constant: 5.0016e-08 [1/s]
Daughters: Lu-177 (21.7%), Hf-177 (78.3%)
Radioactive daughters: Lu-177
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.26872 [MeV]
Mean photon energy: 1.00048 [MeV]
Air kerma rate constant, Γ10: 3.774e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.774e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.305e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 0.000e+00
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
4.305e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.603e-13
[Gy·kg/Bq·s]
Dose point kernels (plot)
Dose point kernel source: Graves, et al. Medical Physics. 2019 Nov.; 46(11):5284-5293.
Note: Bins are spaced every 0.1 mm until a radius of 10 cm, and every 1 mm until a radius of 2 m.
Download tabulated dose point kernel file here: www.mirdsoft.org/products/MIRDspecs/Lu-177m DPK.csv
Summary spectra (plot)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Download tabulated summary spectra file here: www.mirdsoft.org/products/MIRDspecs/Lu-177m Summary Spectrum.csv
Beta spectra (plot)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Download tabulated beta spectra file here: www.mirdsoft.org/products/MIRDspecs/Lu-177m Beta Spectrum.csv
Tabulated data
Summary spectra (table)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Note: Radiations with yield < 0.01 are excluded from the table, but are available in the linked *.csv data.
Download tabulated summary spectra file here: www.mirdsoft.org/products/MIRDspecs/Lu-177m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.40273e-05 |
3.743e+00 |
X-ray |
|
1.94170e-05 |
1.566e+01 |
X-ray |
|
1.57085e-03 |
1.031e-02 |
X-ray |
|
1.63795e-03 |
4.751e-02 |
X-ray |
|
6.98230e-03 |
1.133e-02 |
X-ray |
|
7.64541e-03 |
3.441e-02 |
X-ray |
|
7.83282e-03 |
1.876e-02 |
X-ray |
|
7.88959e-03 |
1.655e-01 |
X-ray |
|
8.72221e-03 |
3.144e-02 |
X-ray |
|
9.03750e-03 |
1.203e-01 |
X-ray |
|
9.34358e-03 |
2.876e-02 |
X-ray |
|
1.05374e-02 |
2.189e-02 |
X-ray |
|
5.30692e-02 |
5.228e-02 |
X-ray |
|
5.41988e-02 |
9.181e-02 |
X-ray |
|
5.47191e-02 |
3.360e-01 |
X-ray |
|
5.51500e-02 |
1.782e-02 |
Gamma |
|
5.59237e-02 |
5.879e-01 |
X-ray |
|
6.14258e-02 |
1.880e-02 |
X-ray |
|
6.31238e-02 |
6.259e-02 |
X-ray |
|
6.33831e-02 |
1.210e-01 |
X-ray |
|
6.50467e-02 |
1.408e-02 |
X-ray |
|
6.51064e-02 |
2.725e-02 |
X-ray |
|
1.05360e-01 |
1.234e-01 |
Gamma |
|
1.12950e-01 |
2.041e-01 |
Gamma |
|
1.21621e-01 |
5.915e-02 |
Gamma |
|
1.28503e-01 |
1.553e-01 |
Gamma |
|
1.36725e-01 |
1.397e-02 |
Gamma |
|
1.47164e-01 |
3.510e-02 |
Gamma |
|
1.53284e-01 |
1.692e-01 |
Gamma |
|
1.71858e-01 |
4.809e-02 |
Gamma |
|
1.74399e-01 |
1.261e-01 |
Gamma |
|
1.77001e-01 |
3.432e-02 |
Gamma |
|
2.04105e-01 |
1.385e-01 |
Gamma |
|
2.08366e-01 |
5.768e-01 |
Gamma |
|
2.14434e-01 |
6.593e-02 |
Gamma |
|
2.18104e-01 |
3.282e-02 |
Gamma |
|
2.28484e-01 |
3.697e-01 |
Gamma |
|
2.33861e-01 |
5.576e-02 |
Gamma |
|
2.49674e-01 |
6.142e-02 |
Gamma |
|
2.68785e-01 |
3.426e-02 |
Gamma |
|
2.81787e-01 |
1.415e-01 |
Gamma |
|
2.91420e-01 |
1.018e-02 |
Gamma |
|
2.96458e-01 |
5.076e-02 |
Gamma |
|
2.99051e-01 |
1.800e-02 |
Gamma |
|
3.05503e-01 |
1.818e-02 |
Gamma |
|
3.13725e-01 |
1.258e-02 |
Gamma |
|
3.19021e-01 |
1.046e-01 |
Gamma |
|
3.21316e-01 |
1.204e-02 |
Gamma |
|
3.27683e-01 |
1.806e-01 |
Gamma |
|
3.41643e-01 |
1.686e-02 |
Gamma |
|
3.67418e-01 |
3.150e-02 |
Gamma |
|
3.78503e-01 |
2.975e-01 |
Gamma |
|
3.85030e-01 |
3.131e-02 |
Gamma |
|
4.13664e-01 |
1.737e-01 |
Gamma |
|
4.18539e-01 |
2.126e-01 |
Gamma |
|
4.65842e-01 |
2.348e-02 |
Gamma |
|
4.06790e-02 |
7.830e-01 |
Beta |
|
9.88034e-06 |
3.253e-01 |
Auger electron |
|
1.07975e-05 |
1.361e+00 |
Auger electron |
|
2.16353e-05 |
4.606e-01 |
Auger electron |
|
2.44610e-05 |
1.932e+00 |
Auger electron |
|
1.56564e-04 |
1.338e+00 |
Auger electron |
|
1.59822e-04 |
5.455e+00 |
Auger electron |
|
2.63940e-04 |
4.073e-02 |
Auger electron |
|
2.70469e-04 |
2.419e-01 |
Auger electron |
|
2.82454e-04 |
1.715e-01 |
Auger electron |
|
3.02162e-04 |
9.161e-01 |
Auger electron |
|
6.23652e-04 |
2.218e-01 |
Auger electron |
|
6.48542e-04 |
4.453e-02 |
Auger electron |
|
1.31235e-03 |
5.605e-01 |
Auger electron |
|
1.36424e-03 |
2.383e+00 |
Auger electron |
|
1.48894e-03 |
2.705e-02 |
Auger electron |
|
1.54215e-03 |
1.254e-01 |
Auger electron |
|
6.02814e-03 |
1.829e-01 |
Auger electron |
|
6.16813e-03 |
7.736e-01 |
Auger electron |
|
7.58403e-03 |
6.691e-02 |
Auger electron |
|
7.78777e-03 |
2.870e-01 |
Auger electron |
|
9.43747e-03 |
2.685e-02 |
Auger electron |
|
3.98775e-02 |
3.385e-01 |
Conversion electron |
|
4.45280e-02 |
3.726e-02 |
Auger electron |
|
4.74678e-02 |
1.649e-01 |
Conversion electron |
|
5.24262e-02 |
1.354e-02 |
Conversion electron |
|
5.31026e-02 |
1.929e-02 |
Auger electron |
|
5.81790e-02 |
9.172e-02 |
Conversion electron |
|
6.30210e-02 |
2.414e-01 |
Conversion electron |
|
8.37220e-02 |
3.175e-02 |
Conversion electron |
|
8.78023e-02 |
1.622e-01 |
Conversion electron |
|
9.41145e-02 |
4.751e-02 |
Conversion electron |
|
9.45965e-02 |
1.515e-02 |
Conversion electron |
|
9.58012e-02 |
1.052e-02 |
Conversion electron |
|
1.01705e-01 |
1.763e-02 |
Conversion electron |
|
1.02187e-01 |
1.108e-01 |
Conversion electron |
|
1.03261e-01 |
1.707e-02 |
Conversion electron |
|
1.03392e-01 |
9.784e-02 |
Conversion electron |
|
1.05495e-01 |
7.916e-02 |
Conversion electron |
|
1.06625e-01 |
6.155e-02 |
Conversion electron |
|
1.08416e-01 |
2.756e-02 |
Conversion electron |
|
1.08917e-01 |
8.468e-02 |
Conversion electron |
|
1.10776e-01 |
1.252e-02 |
Conversion electron |
|
1.10851e-01 |
5.649e-02 |
Conversion electron |
|
1.12950e-01 |
1.536e-02 |
Conversion electron |
|
1.13852e-01 |
3.767e-02 |
Conversion electron |
|
1.15868e-01 |
1.017e-02 |
Conversion electron |
|
1.17258e-01 |
3.388e-02 |
Conversion electron |
|
1.26404e-01 |
1.113e-02 |
Conversion electron |
|
1.38623e-01 |
5.985e-02 |
Conversion electron |
|
1.42039e-01 |
2.284e-02 |
Conversion electron |
|
1.42884e-01 |
3.131e-02 |
Conversion electron |
|
1.48952e-01 |
2.518e-02 |
Conversion electron |
|
1.54662e-01 |
1.004e-02 |
Conversion electron |
|
1.63002e-01 |
4.261e-02 |
Conversion electron |
|
1.63154e-01 |
1.188e-02 |
Conversion electron |
Useful Links
Isotope decay characteristics are periodically updated as better measurements can be made - changes that may not be reflected on this page. Please see useful links:
National Nuclear Data Center (NNDC): https://www.nndc.bnl.gov/nudat3/mird/
International Atomic Energy Agency (IAEA) Livechart: https://www-nds.iaea.org/relnsd/vcharthtml/VChartHTML.html
Reference Links
ICRP Report 107: https://www.icrp.org/publication.asp?id=ICRP%20Publication%20107
Graves et al. Dose Point Kernels: https://doi.org/10.1002/mp.13789
MIRD Decay Schemes 2nd Edition: https://sites.snmmi.org/SNMMI-MAIN/iCore/Store/StoreLayouts/Item_Detail.aspx?iProductCode=0-932004-80-6
MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)
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