Single- versus multi-detector row CT of the brain: Quality assessment

Timothy R. Jones, Richard T. Kaplan, Barton Lane, Scott W. Atlas, Geoffrey D. Rubin

Research output: Contribution to journalArticlepeer-review

43 Scopus citations


PURPOSE: To assess the quality of brain computed tomographic (CT) studies obtained with a four-channel multi-detector row CT scanner compared with those obtained with a single-detector row CT scanner. MATERIALS AND METHODS: Forty-seven patients referred for brain CT were imaged with both single- and multi-detector row scanners. Single-detector row CT images were acquired by using a 5-mm-collimated beam in the transverse mode. Multi-detector row CT images were acquired in four simultaneous 2.5-mm-thick sections, which were combined in projection space to create two contiguous 5-mm-thick sections. Two neuroradiologists blinded to the acquisition technique independently evaluated the CT image pairs, which were presented in a stacked mode on two adjacent monitors. Each study was graded by using a five-point scale for posterior fossa artifact, overall image quality, and overall preference. RESULTS: Multi-detector row CT studies were acquired 1.8 times faster than single-detector row CT studies (0.92 vs 0.52 section per second). Multi-detector row CT posterior fossa artifact was less than single-detector row CT posterior fossa artifact in 87 (93%) of 94 studies. Overall preference was expressed for multi-detector row CT in 84 (89%) of 94 studies. The differences in mean posterior fossa artifact scores (P < .001) and mean overall image quality scores (P = .001) were significant. CONCLUSION: Brain CT images obtained with multi-detector row CT resulted in significantly less posterior fossa artifact and were preferred to single-detector row CT images.

Original languageEnglish (US)
Pages (from-to)750-755
Number of pages6
Issue number3
StatePublished - Jun 2001
Externally publishedYes


  • Brain, CT, 10.12115
  • Computed tomography (CT), artifact
  • Computed tomography (CT), comparative studies
  • Computed tomography (CT), technology

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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