Papers

May, 2016

Acute coronary syndrome: evaluation of detection capability using non-electrocardiogram-gated parenchymal phase CT imaging.

Japanese journal of radiology
  • Motohiko Yamazaki
  • ,
  • Takeshi Higuchi
  • ,
  • Toshikazu Shimokoshi
  • ,
  • Takao Kiguchi
  • ,
  • Yosuke Horii
  • ,
  • Norihiko Yoshimura
  • ,
  • Hidefumi Aoyama

Volume
34
Number
5
First page
331
Last page
8
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1007/s11604-016-0527-5

PURPOSE: To evaluate the capability to detect acute coronary syndrome (ACS) by using non-electrocardiogram-gated parenchymal phase CT imaging. MATERIALS AND METHODS: Of 962 consecutive patients who underwent emergent coronary angiography for suspected ACS, 32 with ACS who underwent CT ≤24 h before angiography and 15 without ACS who underwent CT ≤24 h before or after angiography were included. Parenchymal phase was acquired at 100-s scan delay. The presence of a myocardial perfusion defect (MPD) on the left ventricle (a decrease of >20 HU) and its capability to detect ACS were evaluated. Results were compared with laboratory findings. RESULTS: MPD was detected in 29 of 32 ACSs. The sensitivity, specificity, and positive and negative predictive values were 91 % (29/32), 93 % (14/15), 97 % (29/30), and 82 % (14/17), respectively. The sensitivities of ST- and non-ST-elevation ACSs were 89 % (16/18) and 93 % (13/14), respectively, without significant difference (P > 0.99). Of the CT-detectable ACS, non-ST-elevation on the electrocardiogram and a normal creatine kinase-myocardial band were observed in 41 % (12/29) and 24 % (7/29), respectively. CONCLUSION: ACS is highly detectable even using conventional parenchymal phase CT imaging. Therefore, even when CT is non-gating, radiologists should carefully evaluate the heart to avoid overlooking ACS.

Link information
DOI
https://doi.org/10.1007/s11604-016-0527-5
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26883335
ID information
  • DOI : 10.1007/s11604-016-0527-5
  • Pubmed ID : 26883335

Export
BibTeX RIS