US 12,144,677 B2
Synthetic aperture image reconstruction system in a patient interface module (PIM)
Paul Douglas Corl, Palo Alto, CA (US)
Assigned to PHILIPS IMAGE GUIDED THERAPY CORPORATION, San Diego, CA (US)
Filed by VOLCANO CORPORATION, San Diego, CA (US)
Filed on Sep. 24, 2019, as Appl. No. 16/580,991.
Application 16/580,991 is a continuation of application No. 14/137,304, filed on Dec. 20, 2013, granted, now 10,420,531, issued on Sep. 24, 2019.
Claims priority of provisional application 61/746,733, filed on Dec. 28, 2012.
Prior Publication US 2020/0015779 A1, Jan. 16, 2020
Int. Cl. A61B 8/12 (2006.01); A61B 5/00 (2006.01); A61B 8/08 (2006.01); G01S 15/89 (2006.01); H03K 19/17728 (2020.01)
CPC A61B 8/12 (2013.01) [A61B 5/0066 (2013.01); A61B 5/0084 (2013.01); A61B 8/0891 (2013.01); A61B 8/5207 (2013.01); G01S 15/892 (2013.01); G01S 15/8997 (2013.01); H03K 19/17728 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An intravascular system, comprising:
an intravascular device configured to be positioned in a blood vessel of a patient and comprising at least one transducer element configured to generate an analog electrical signal representative of intravascular data;
a patient interface module (PIM) comprising a housing;
and
a control system distinct from the PIM,
wherein the PIM is communicatively interposed between the control system and the intravascular device,
wherein the housing of the PIM is separate from the intravascular device and the control system,
wherein the PIM is configured to:
receive the analog electrical signal from an individual transducer element of the at least one transducer element;
generate a plurality of digital sampling points from the analog electrical signal to convert the intravascular data from the analog electrical signal to a digital electrical signal, wherein the plurality of digital sampling points comprises a first digital sampling point, a second digital sampling point, a third digital sampling point, and a fourth digital sampling point that are ordered consecutively in time for a cycle of a center frequency of the analog electrical signal; and
arrange the plurality of digital sampling points into a first complex number and a second complex number for the cycle of the center frequency of the analog electrical signal such that:
an imaginary part of the first complex number comprises the first digital sampling point and a real part of the first complex number comprises the second digital sampling point;
the imaginary part of the second complex number comprises the third digital sampling point and the real part of the second complex number comprises the fourth digital sampling point;
wherein the control system is configured to:
receive the digital electrical signal from the PIM;
generate, using the digital electrical signal, an output based on the intravascular data; and
provide the output to a display.