RT Journal Article
SR Electronic
T1 Simultaneous transrectal ultrasound and photoacoustic human prostate imaging
JF Science Translational Medicine
FD American Association for the Advancement of Science
SP eaav2169
DO 10.1126/scitranslmed.aav2169
VO 11
IS 507
A1 Kothapalli, Sri-Rajasekhar
A1 Sonn, Geoffrey A.
A1 Choe, Jung Woo
A1 Nikoozadeh, Amin
A1 Bhuyan, Anshuman
A1 Park, Kwan Kyu
A1 Cristman, Paul
A1 Fan, Richard
A1 Moini, Azadeh
A1 Lee, Byung Chul
A1 Wu, Jonathan
A1 Carver, Thomas E.
A1 Trivedi, Dharati
A1 Shiiba, Lillian
A1 Steinberg, Idan
A1 Huland, David M.
A1 Rasmussen, Morten F.
A1 Liao, Joseph C.
A1 Brooks, James D.
A1 Khuri-Yakub, Pierre T.
A1 Gambhir, Sanjiv S.
YR 2019
UL http://stm.sciencemag.org/content/11/507/eaav2169.abstract
AB Molecular imaging can help improve detection of cancer, but some modalities require ionizing radiation, making them nonideal for repeated imaging. Kothapalli et al. developed a probe that could perform ultrasound and photoacoustic imaging simultaneously, two modalities that do not require ionizing radiation. Testing the transrectal ultrasound and photoacoustic device in vitro, in mouse models, and using excised human prostates demonstrated the ability to view anatomical features within tissue and vascular contrast within tumors. Administering a dye improved photoacoustic contrast when imaging the prostates of human subjects with cancer. This device allows for real-time anatomical, functional, and molecular imaging of the human prostate and could be easily adopted into clinical workflows.Imaging technologies that simultaneously provide anatomical, functional, and molecular information are emerging as an attractive choice for disease screening and management. Since the 1980s, transrectal ultrasound (TRUS) has been routinely used to visualize prostatic anatomy and guide needle biopsy, despite limited specificity. Photoacoustic imaging (PAI) provides functional and molecular information at ultrasonic resolution based on optical absorption. Combining the strengths of TRUS and PAI approaches, we report the development and bench-to-bedside translation of an integrated TRUS and photoacoustic (TRUSPA) device. TRUSPA uses a miniaturized capacitive micromachined ultrasonic transducer array for simultaneous imaging of anatomical and molecular optical contrasts [intrinsic: hemoglobin; extrinsic: intravenous indocyanine green (ICG)] of the human prostate. Hemoglobin absorption mapped vascularity of the prostate and surroundings, whereas ICG absorption enhanced the intraprostatic photoacoustic contrast. Future work using the TRUSPA device for biomarker-specific molecular imaging may enable a fundamentally new approach to prostate cancer diagnosis, prognostication, and therapeutic monitoring.