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Radionuclide Dosimetric Data Sheets
Lutetium-177
Summary data
General
Classification
Isotope: Lu-177
Atomic number (Z): 71
Mass number (A): 177
Neutron number (N): 106
Radioactive decay
Decay modes: β-
Half-life: 6.647 [d]
Decay constant: 1.2069e-06 [1/s]
Daughters: Hf-177 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.14792 [MeV]
Mean photon energy: 0.03509 [MeV]
Air kerma rate constant, Γ10: 1.319e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.319e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.370e-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-:
2.370e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.622e-15
[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-177 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-177 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-177 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-177 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94297e-05 |
1.281e+00 |
X-ray |
|
7.88959e-03 |
1.278e-02 |
X-ray |
|
9.03751e-03 |
1.176e-02 |
X-ray |
|
5.47191e-02 |
1.632e-02 |
X-ray |
|
5.59237e-02 |
2.855e-02 |
X-ray |
|
1.12950e-01 |
6.400e-02 |
Gamma |
|
2.08366e-01 |
1.100e-01 |
Gamma |
|
4.75267e-02 |
1.221e-01 |
Beta |
|
1.11507e-01 |
9.104e-02 |
Beta |
|
1.49135e-01 |
7.864e-01 |
Beta |
|
1.07320e-05 |
1.112e-01 |
Auger electron |
|
2.44606e-05 |
1.578e-01 |
Auger electron |
|
1.59973e-04 |
4.466e-01 |
Auger electron |
|
2.81854e-04 |
1.407e-02 |
Auger electron |
|
3.03459e-04 |
7.589e-02 |
Auger electron |
|
7.16784e-04 |
1.350e-02 |
Auger electron |
|
1.36622e-03 |
1.946e-01 |
Auger electron |
|
1.54549e-03 |
1.027e-02 |
Auger electron |
|
6.20291e-03 |
6.339e-02 |
Auger electron |
|
7.82315e-03 |
2.354e-02 |
Auger electron |
|
4.74678e-02 |
5.171e-02 |
Conversion electron |
|
1.02187e-01 |
3.474e-02 |
Conversion electron |
|
1.03392e-01 |
3.068e-02 |
Conversion electron |
|
1.10851e-01 |
1.771e-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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