Absorbed Dose to Water: High Energy Photon Beams

Based on IAEA TRS 398

Institute Logo (PDF):

User:

Date:

Therapy Unit:

1. Measurement Conditions

Phantom Material:

Set-up:

Ref Depth (Z_ref) [g/cm²]:

Field Size [cm x cm]:

No. of MU: *

2. Dosimetry Equipment

Select Commissioned Chamber:

Chamber Model:

Chamber Serial No:

N_D,w [cGy/nC]: *

Calibration Lab:

Electrometer Model:

Electrometer Serial No:

3. Influence Quantities & Corrections

(a) Pressure & Temperature

T₀ [°C]:

P₀:

Measured T [°C]:

Measured P:

k_TP = 1.0000

(b) Polarity Correction

Select the routine polarity. M₁ will sync automatically.

M₊ (Positive Readings):

Avg M₊: 0.000

M_- (Negative Readings):

Avg M_-: 0.000

k_pol = 1.0000

(c) Recombination (Pulsed Beams)

V₁ (Normal) [V]:

V₂ (Reduced) [V]:

M₁ (Readings at V₁):

Avg M₁: 0.000

M₂ (Readings at V₂):

Avg M₂: 0.000

Selected Coefficients (Ratio V₁/V₂ = --):
a₀: -- | a₁: -- | a₂: --

k_s = 1.0000

(d) Additional Factors

Electrometer k_elec:

4. Absorbed Dose to Water

Tolerance:

QA Unit Mode:

Energy	M_raw (1, 2, 3) and Avg M_raw	k_Q (Editable)	PDD (%) *	Ref Output * [cGy/MU]	D_w(z_max) [cGy/MU]	Var (%)	Act

Admin Dashboard

1. Commission New Therapy Unit

Therapy Unit Name:

Energy	TPR_20,10	Ref PDD (%)	Ref TMR	Ref Output Unit	Ref Output (SSD)	Ref Output (SAD)	Act

2. Commission New Chamber

Chamber Model (e.g., PTW 30013):

Serial Number:

N_D,w [cGy/nC]:

Target Machine:

Calibration Lab:

Calibration Date:

Calibration Due Date:

3. Team Management

Invite new physicists to your hospital's workspace. They will receive an email with their temporary password.

Colleague's Email:

Role:

Temporary Password:

QA Modules

Output Measurement

Absorbed Dose to Water: High Energy Photon Beams

1. Measurement Conditions

2. Dosimetry Equipment

3. Influence Quantities & Corrections

(a) Pressure & Temperature

(b) Polarity Correction

(c) Recombination (Pulsed Beams)

(d) Additional Factors

4. Absorbed Dose to Water

Admin Dashboard

1. Commission New Therapy Unit

2. Commission New Chamber

Calculate k_Q Factors

3. Team Management

Output Measurement

1. Measurement Conditions

2. Dosimetry Equipment

3. Influence Quantities & Corrections

(a) Pressure & Temperature

(b) Polarity Correction

(c) Recombination (Pulsed Beams)

(d) Additional Factors

4. Absorbed Dose to Water

1. Commission New Therapy Unit

2. Commission New Chamber

Calculate kQ Factors

3. Team Management

Calculate k_Q Factors