NucMed Dose Lab

Educational examples

Example Cases

Review short educational cases that show expected outputs before practicing in the interactive calculators.

mCi/MBq conversion

Convert 10 mCi to MBq.

Inputs

  • Activity: 10
  • From unit: mCi
  • To unit: MBq

Expected output

  • Expected: 370 MBq

Formula note: 1 mCi = 37 MBq.

Open conversion calculator

Tc-99m one half-life decay

Estimate remaining activity after one Tc-99m half-life.

Inputs

  • Initial activity: 10 mCi
  • Elapsed time: 360.6 minutes

Expected output

  • Expected: about 5 mCi

Formula note: A(t) = A0 x 0.5^(elapsed minutes / half-life minutes).

Open decay calculator

F-18 one half-life decay

Estimate remaining activity after one F-18 half-life.

Inputs

  • Initial activity: 10 mCi
  • Elapsed time: 109.8 minutes

Expected output

  • Expected: about 5 mCi

Formula note: A(t) = A0 x 0.5^(elapsed minutes / half-life minutes).

Open decay calculator

Residual activity

Estimate administered activity and residual percentage.

Inputs

  • Pre-injection: 10 mCi
  • Residual: 0.5 mCi

Expected output

  • Expected administered: 9.5 mCi
  • Residual percentage: 5%

Formula note: Administered activity = pre-injection activity - residual activity.

Open residual calculator

Mock dose log zero elapsed time

Generate a mock dose log with no decay interval.

Inputs

  • Mock ID: DEMO-001
  • Radiopharmaceutical: Tc-99m MDP
  • Ordered: 25 mCi
  • Calibrated: 26 mCi
  • Residual: 0.5 mCi

Expected output

  • Expected administered: 25.5 mCi
  • Residual percentage: about 1.92%
  • Variance: +0.5 mCi / +2%

Formula note: Estimated administered activity = estimated activity at administration - residual activity.

Open mock dose log simulator