220 khz hemispherical phased array focused ultrasound system exablate neuro  (InSightec inc)

Journal: Scientific Reports

Article Title: Comparison between MR and CT imaging used to correct for skull-induced phase aberrations during transcranial focused ultrasound

doi: 10.1038/s41598-022-17319-4

Figure Lengend Snippet: Experimental setup used in this study. Three ex vivo skulls were used for experimentation. Each of the three skulls was fixed to a head frame to ensure consistent positioning. The head frame was secured in an InSightec 670 kHz hemispherical phased array transducer. Data were acquired with a needle hydrophone and 3-axis positioner system. Illustrations were drawn by Sarah Hwang.

Article Snippet: The degassed ex vivo human skulls were sonicated with a 670 kHz hemispherical phased array transducer (InSightec Exablate 4000).

Techniques: Ex Vivo

Journal: Scientific Reports

Article Title: Comparison between MR and CT imaging used to correct for skull-induced phase aberrations during transcranial focused ultrasound

doi: 10.1038/s41598-022-17319-4

Figure Lengend Snippet: Experimental setup used in this study. Three ex vivo skulls were used for experimentation. Each of the three skulls was fixed to a head frame to ensure consistent positioning. The head frame was secured in an InSightec 670 kHz hemispherical phased array transducer. Data were acquired with a needle hydrophone and 3-axis positioner system. Illustrations were drawn by Sarah Hwang.

Article Snippet: The head frame was secured in an InSightec 670 kHz hemispherical phased array transducer.

Techniques: Ex Vivo

Journal: Scientific Reports

Article Title: Comparison between MR and CT imaging used to correct for skull-induced phase aberrations during transcranial focused ultrasound

doi: 10.1038/s41598-022-17319-4

Figure Lengend Snippet: Experimental setup used in this study. Three ex vivo skulls were used for experimentation. Each of the three skulls was fixed to a head frame to ensure consistent positioning. The head frame was secured in an InSightec 670 kHz hemispherical phased array transducer. Data were acquired with a needle hydrophone and 3-axis positioner system. Illustrations were drawn by Sarah Hwang.

Article Snippet: The skull and head frame were secured in a 670 kHz InSightec Exablate 4000 hemispherical phased array transducer and positioned in the clinical orientation; the anterior portion of the skull was closest to the anterior portion of the transducer.

Techniques: Ex Vivo

Journal: Scientific Reports

Article Title: Comparison between MR and CT imaging used to correct for skull-induced phase aberrations during transcranial focused ultrasound

doi: 10.1038/s41598-022-17319-4

Figure Lengend Snippet: Beamforming performance of different image types with the target placed at the geometric focus. ( a ) Target and peak pressure (shown with darker and lighter colors, respectively) when operating the transducer at 20 W of electrical power. ( b ) Target and peak intensity normalized to the hydrophone method. ( c ) Focal spot positioning error. ( d ) Focal spot volume. ( e ) Dice similarity coefficient. Standard deviation bars are shown.

Article Snippet: The skull and head frame were secured in a 670 kHz InSightec Exablate 4000 hemispherical phased array transducer and positioned in the clinical orientation; the anterior portion of the skull was closest to the anterior portion of the transducer.

Techniques: Standard Deviation