Mini CT QC Phantom

Open Section G: CT Simulators, CT Products, Chambers, Lasers, Phantoms(PDF) to view related products. (Opens in a new tab)

 

Mini CT QC Phantom

 

• Lightweight, compact and extremely portable. Ideal for field and service use
• Can be used with any CT scanner
• For measurement and analysis of all major CT scanner functions and radiation dose
• For making inhomogeneity corrections in radiation oncology

 

The Mini CT QC Phantom, is a highly-versatile phantom designed for routine monitoring for the consistency of all the major parameters of CT image quality and radiation dose. Its unique, compact design allows for unparalleled portability, easy setup and reliable parameter determinations. It is perfect for use by physicists, technologists and service engineers. 

The disc section consists of a 1" thick acrylic disc with a 6' diameter. Five of the six large holes are for the placement of inserts for the evaluation of CT number consistency. The sixth hole is for a high-contrast resolution insert or an optional low contrast resolution insert. The seven small holes are for inserting an ion chamber at differing locations within the phantom. Six acrylic inserts are provided to fill these holes, leaving one hole to accommodate an ion chamber during a given measurement. 

The disc section is attached to a rectangular acrylic bar containing a thin copper wire embedded along a central groove. This section of the phantom is used to evaluate laser beam alignment and accuracy of the slice thickness, slice spacing, slice contiguity and pilot scan to transverse or longitudinal scan correspondence. This is achieved by exposing a nonscreen film placed underneath the phantom and making several cuts while the phantom is advanced along the gantry in a pre-programmed manner. 

 

The low-cost, all-in-one QC Phantom accurately evaluates:

• Laser beam alignment
• Slice thickness, spacing and contiguity
• Table movement
• CT numbers and noise level
• CT number uniformity
• Relative radiation dose
• Video monitor and image processing equipment
• Scout and axial scan correspondence
• High-contrast resolution
• Low-contrast resolution (optional insert)

 

Optional Inserts:

Item 682-305: Low-contrast resolution insert

Item 682-307: Teflon® insert

Item 682-309: Lung insert

Item 682-311L: Teflon®-Bone 270° semi-ring for evaluation of beam hardening correction software

 

Specifcations:

 

Body

Material: Acrylic (PMMA)

Dimensions: 6" dia. x 1" thick (15.25 cm dia. x 2.54 cm thick)

Holes: Six 1.125" dia. holes; Seven 0.50" dia. through holes

Weight: 3 lbs (1.35 kg)

 

Inserts

Material: One - 1.125" dia. plug of each: Plastic Water™, nylon, bone-equivalent, polyethylene, polystyrene, polycarbonate and acrylic. Six - 0.50" dia. acylic plugs, for chamber cavities

 

Base

Material: Acrylic

Construction: Copper wire approx. 0.02" dia., fixed into a 0.02" deep groove centered along base, disk is attached to the side of the body with 2 removable nylon slotted screws. 

Dimensions: 30.3 cm L x 4.6 cm W x 1.75 cm thick