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Year : 2016  |  Volume : 26  |  Issue : 3  |  Page : 71-77

Transcranial doppler ultrasound: Incremental diagnostic role in cryptogenic stroke part II

1 Department of Cardiology, Second University of Naples, Monadi Hospital, Naples, Italy
2 Department of Cardiology, G. Rummo Hospital, Benevento, Italy

Correspondence Address:
Dr. Antonello D'Andrea
Via M. Schipa, 44, 80122, Naples
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2211-4122.187947

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Transcranial Doppler (TCD) ultrasonography is a noninvasive ultrasound study, which has been extensively applied in both outpatient and inpatient settings. Its main use in current clinical practice is the research for "Paradoxical Embolism," due to migration of thromboembolic material from systemic venous circulation to the left cardiac chambers and arterial circulation through cardiopulmonary shunts such as patent foramen ovale which represents an important cause of cryptogenic stroke, especially in patients under 55 years of age. In this review, we shall describe the incremental diagnostic role in cryptogenic stroke for this imaging modality. TCD not only can be used to detect right-left cardiopulmonary shunts but it also allows to classify the grade of severity of such shunts using the so-called "Microembolic Signals grading score."

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