PMC4750321_01
Persistent trigeminal artery on computed tomography angiogram
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Computed tomography angiography [Figure 1].
TCD findings on insonation of Left MCA and PCA. (a) Left MCA (baseline) (MFV: 38). (b) Left MCA (end of breath holding) (MFV: 42). (c) Left PCA (baseline) (MFV: 27). (d) Left PCA (end of breath holding) (MFV: 25). (e) MES left MCA. TCD: Transcranial Doppler, MCA: Middle cerebral artery, PCA: Posterior cerebral artery, MES: Microembolic signal, MFV: Mean flow velocity
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The breath holding index was 0.35 and - 0.25 on insonating the left MCA and PCA, respectively [Figure 2].