CT Monte Carlo Dose Calculator v2.0 (3D / Precise MC)

1. Phantom / Image

Sample phantom

DICOM single/multiple files

VTK volume data

2× resolution (144×144×192, ~8× slower)

2. Scan Parameters

Tube voltage (kVp)

Air kerma @ iso (mGy / 100mAs / rot)

Typical 30–100 mGy depending on scanner

Tube current (mA)

Rotation time (s/rot)

mAs/rot = 150 mAs

Scan mode

Beam width N×T (mm)

Helical pitch

Scan range: -- mm

z_min (mm)

z_max (mm)

Drag handles on coronal view OR type values above

3. Table / Bowtie

Include table attenuation

Table Al-equiv (mm)

Bowtie intensity

4. MC Mode

Sources per rotation

Total photons

Source-Isocenter dist. SID (mm)

COBRA scatter (Simple)

CPU cores

Parallel eff.

—

Elapsed 0.0s

Log

Axial (XY) z=--

z: 🔍

Coronal (XZ) — Scan range set y=--

y: 🔍

z=--

Sagittal (YZ) x=--

x: 🔍

Helix preview

Dose (mGy)

Auto (95%) Log scale

Beam quality

Tube voltage--

HVL (mm Al)--

Effective energy (keV)--

μ/ρ water (cm²/g)--

Energy spectrum (2 keV/bins)

Dose indices

CTDI_vol (mGy)--

DLP (mGy·cm)--

SSDE est. (mGy)--

Result summary

maxDose (mGy)--

meanDose (mGy)--

Scatter (%)--

Calc time (s)--

# Photons traced--

auto OrganDose (HU threshold)

	Tissue	HU	vol%	Dose±σ (mGy)

☑ Check → regionView / DVHcurveView / σ SEM

DVH (CumulativeDosevolume)

Per-Tissue of CumulativeDosevolume distribution (Dose ≥ D where volume fraction)

manual ROI Dose

ROI 「+Add ROI」after button click、Drag on image

DoseProfile

「📈 Profile」after button click、On image, 2 point clicks

COBRA / Precise info

Scatter kernel σ (cm)--

S/P ratio--

Photoelectric (PE)--

Compton scattering--

Rayleigh scattering--