---
name: "phm2pj"
section: "1"
platform: "linux"
package: "ctsim"
version: "6.0.2-6+b5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/phm2pj"
---

# phm2pj(1)

calculate projections through a phantom object.

## NAME

phm2pj - calculate projections through a phantom object.

## SYNOPSIS

**phm2pj outfile ndet nview \[--phantom phantom-name\] \[--phmfile filename\] \[OPTIONS\]**

## DESCRIPTION

*phm2pj* calculates projections through a phantom object, either a predefined --phantom or a --phmfile.

## OPTIONS

- **--outfile**

  Name of output file for projections

- **--ndet**

  Number of detectors

- **--nview**

  Number of rotated views

- **--phantom**

  Predefined phantom to use for projection: can be one of

  - **herman**

    Herman head phantom

  - **herman-b**

    Herman head phantom (Bordered)

  - **shepp-logan**

    Shepp-Logan head phantom

  - **shepp-logan-b**

    Shepp-Logan head phantom (Bordered)

  - **unitpulse**

    Unit pulse phantom

- **--phmfile *name***

  Get Phantom from phantom file

- **--desc**

  Description of raysum

- **--nray**

  Number of rays per detector (default = 1)

- **--rotangle**

  Degrees to rotate view through (multiple of PI) (default = 1)

- **--geometry**

  Geometry of scanning

  - **parallel**

    Parallel scan beams (default)

  - **equilinear**

    Equilinear divergent scan beams

  - **equiangular**

    Equiangular divergent scan beams

- **--focal-length**

  Focal length ratio (ratio to radius of phantom) (default = 1)

- **--field-of-view**

  Field of view (ratio to diameter of phantom square) (default = 1)

- **--trace**

  Trace level to use, one of:

  - **none**

    No tracing (default)

  - **console**

    Trace text level

- **--verbose**

  Verbose mode

- **--debug**

  Debug mode

- **--version**

  Print version

- **--help**

  Print a terse help message

## AUTHORS

Kevin Rosenberg, M.D. \<kevin@ctsim.org\>

## HISTORY

CTSim was begun in 1983 using MS-DOS and an EGA display adapter. In 1999 it was ported to GNU/Linux and later ported to Microsoft Windows.

## SEE ALSO

[**ctsim**(1)](/ctsim/1.md) [**ctsimtext**(1)](/ctsimtext/1.md) [**if1**(1)](/if1/1.md) [**if2**(1)](/if2/1.md) [**ifinfo**(1)](/ifinfo/1.md) [**linogram**(1)](/linogram/1.md) [**phm2helix**(1)](/phm2helix/1.md) [**phm2if**(1)](/phm2if/1.md) [**pj2if**(1)](/pj2if/1.md) [**pjHinterp**(1)](/pjHinterp/1.md) [**pjinfo**(1)](/pjinfo/1.md) [**pjrec**(1)](/pjrec/1.md)