• Object ID: 00000018WIA30428870GYZ
  • Topic ID: id_40021727 Version: 1.3
  • Date: Apr 13, 2022 2:45:35 AM

Truncation artifact

The truncation artifact may appear when k-space data is not completely acquired. This artifact appears around bright tissue and spreads along the partial k-space direction. It is enhanced if the brightness changes sharply along this direction.

To reduce this artifact, change your protocol to include one or more of the following:

  • Reduce the FOV to avoid sharp contrast changes.
  • Increase the matrix values to 256 x 256 or 512 x 512 to apply full k-space data acquisition.
  • Change the TE value to MinFull if Minimum is used.
Figure 1. Example of truncation artifact evident in left spine image and resolved on right spine image
Table 1. Image legend
NumberDescription
1
Note: The bright signal/truncation artifact in the spinal column. The image was acquired with the following parameters:
  • FOV = 50 cm
  • Frequency matrix value = 288
  • Phase matrix value = 288
  • Frequency direction = Right/Left
  • Body coil
  • PSD = FSE
  • Imaging Options = TRF
  • TR = 3000 ms
  • TE = 100 ms
  • ETL = 16
  • Slice thickness = 3 mm
  • NEX = 4
  • Bandwidth = 31.2 kHz
2
Note: The truncation artifact is no longer present. All scan parameters are the same except the following:
  • Frequency matrix value = 416