NMD-00 · laboratory
MIRD, decay in vivo, uptake, PET coincidence and well-counter geometry.
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36 governing sheets
D = Ã S. Cumulated activity times the S-value of the source–target pair.
Internal dosimetryA = A0 e^{−λt}. Activity remaining after physical decay.
Decayλe = λp + λb. Physical plus biological clearance.
Decay%ID = 100 A_organ / A_inj. Fraction of the injection in an organ.
UptakeR = 2 ε² g A. Geometric efficiency g times paired detection.
PETε = ½ (1 − h/√(h²+R²)). On-axis geometric efficiency of a circular well.
Countinga = λ NA / M. Bq per kilogram of a pure radionuclide.
Radiochemistryτ = Ã / A0. Hours of cumulated activity per unit injected.
Internal dosimetryà = 1.443 Teff A0. Area under a single-exponential A(t).
Internal dosimetryṄγ = A Y. Photon (or particle) rate from yield Y.
DecayS = C / (A t). Counts per second per MBq in air.
Gamma cameraFWHM = 2.355 σ. Gaussian energy or spatial width.
Gamma cameraSF = S / (T + S). Scatter over trues-plus-scatter.
ScatterSUV = C W / A. Concentration times body weight over injected activity.
QuantificationRC = C_meas / C_true. Partial-volume recovery of a hot sphere.
Quantificationn = m / (1 − m τ). True rate from observed rate and dead time τ.
CountingW% = 100 ΔE / E0. Photopeak window as a percent of E0.
SpectroscopyRc = d (Leff + z) / Leff. Hole diameter d, effective length Leff, distance z.
Gamma cameraI = I0 e^{−μx}. SPECT/PET attenuation of a photon path.
Attenuationf(t) = 1 − e^{−λb t}. Fraction excreted by a single biological compartment.
BiokineticsU% = 100 (Neck − Thigh)/Std × e^{λt}. Probe uptake with background and decay.
UptakeGFR ≈ [ln(C1/C2)/(t2−t1)] Vd. Two-sample plasma clearance.
ClearanceA = A0 (1/2)^{t/6.01 h}. The workhorse 140 keV generator daughter.
RadionuclidesA = A0 (1/2)^{t/109.8 min}. PET's 511 keV workhorse.
RadionuclidesA = A0 (1/2)^{t/8.02 d}. β/γ therapy and uptake nuclide.
RadionuclidesTe = Tp Tb / (Tp + Tb). Harmonic combination of physical and biological half-lives.
DecayA2 = A10 λ1/(λ2−λ1) (e^{−λ1 t} − e^{−λ2 t}). Growing-in of a daughter.
Decay%ID/g = %ID / m. Biodistribution density.
UptakeẊ = Γ A / r². Exposure (or air-kerma) rate from a point source.
Exposureσ = √N, SNR = √N. Counting statistics of a nuclear measurement.
CountingNECR = T² / (T + S + k R). PET figure of merit versus activity.
PETC_app = RC C_true + (1−RC) C_bg. Spill-in plus spill-out.
QuantificationPhysical decay of activity.
Nuclear medicineClearance plus physics.
Nuclear medicineT½ = 6 h.
Nuclear medicineBiodistribution.
Nuclear medicine