proton beam aperture
Date: 2002
Inventory Number: 2002-1-0028a
Classification: Aperture
Maker: Elliot Hammerman
Dimensions:
8.9 x 8.9 x 3.8 cm (3 1/2 x 3 1/2 x 1 1/2 in.)
Material:
Description:
The brass aperture has an irregular hole drilled through the center with a diameter ranging from 2.5 to 3.0 cm. Holes are drilled on the faces in order to mate the aperture with the range compensator (2002-1-0028b).
Along the side of the cylinder there are markings in black ink: "DE / R / [partly obliterated letters and numerals]" and "RL1." There is also a cross marked in line with a scratched line on the front face of the cylinder.
The front face is marked with obliterated letters and "RL1 T[hole]P WED 1-23." This refers to the orientation of the treatment (Right Lateral One) and the date.
A green circular sticker is scotch taped on the side and labeled, "1/23/02 / RAS." This refers to the patient and date of treatment.
Along the side of the cylinder there are markings in black ink: "DE / R / [partly obliterated letters and numerals]" and "RL1." There is also a cross marked in line with a scratched line on the front face of the cylinder.
The front face is marked with obliterated letters and "RL1 T[hole]P WED 1-23." This refers to the orientation of the treatment (Right Lateral One) and the date.
A green circular sticker is scotch taped on the side and labeled, "1/23/02 / RAS." This refers to the patient and date of treatment.
In Collection(s)
Signedunsigned
FunctionA brass aperture was used to shape the transverse cross-section of the proton beam used to treat a tumor or other tissue in a medical patient.
Historical AttributesThis aperture was used to treat a tumor in a patient at the Harvard Cyclotron Laboratory in 2002.