TY - JOUR
T1 - The Twente Photoacoustic Mammoscope
T2 - system overview and performance
AU - Manohar, Srirang
AU - Kharine, Alexei
AU - van Hespen, Johan C.G. van
AU - Steenbergen, Wiendelt
AU - van Leeuwen, Ton G.
PY - 2005
Y1 - 2005
N2 - We present PAM, the Photoacoustic Mammoscope developed at the University
of Twente, intended for initial retrospective clinical studies on subjects with
breast tumours. A parallel plate geometry has been adopted and the breast will
be gently compressed between a glass plate and a flat ultrasound detector matrix. Pulsed light (5 ns) from an Nd:YAG laser will impinge the breast through the glass plate in regions of interest; an appropriate number of the 590 elements of the detector matrix will be activated in succession to record photoacoustic signals. Three-dimensional image reconstruction employs a delay-and-sum beamforming algorithm. We discuss various instrumental aspects and the
proposed imaging protocol. Performance studies of the ultrasound detector are presented in terms of sensitivity, frequency response and resolution. Details of the patient–instrument interface are provided. Finally some imaging results on well-characterized breast tissue phantoms with embedded tumour simulating
inserts are shown.
AB - We present PAM, the Photoacoustic Mammoscope developed at the University
of Twente, intended for initial retrospective clinical studies on subjects with
breast tumours. A parallel plate geometry has been adopted and the breast will
be gently compressed between a glass plate and a flat ultrasound detector matrix. Pulsed light (5 ns) from an Nd:YAG laser will impinge the breast through the glass plate in regions of interest; an appropriate number of the 590 elements of the detector matrix will be activated in succession to record photoacoustic signals. Three-dimensional image reconstruction employs a delay-and-sum beamforming algorithm. We discuss various instrumental aspects and the
proposed imaging protocol. Performance studies of the ultrasound detector are presented in terms of sensitivity, frequency response and resolution. Details of the patient–instrument interface are provided. Finally some imaging results on well-characterized breast tissue phantoms with embedded tumour simulating
inserts are shown.
KW - 2024 OA procedure
U2 - 10.1088/0031-9155/50/11/007
DO - 10.1088/0031-9155/50/11/007
M3 - Article
SN - 0031-9155
VL - 50
SP - 2543
EP - 2557
JO - Physics in medicine and biology
JF - Physics in medicine and biology
IS - 11
ER -