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Choosing an appropriate dynamic range for acquiring radio-frequency (RF) data from a high-frequency ultrasound (HFU) system is challenging because the RF data amplitude typically covers several orders of magnitude between the sample surface and the deepest imaged regions. In addition, the saturated signal may decrease the accuracy of QUS methods because quantitative ultrasound (QUS) methods are sensitive...
A commonly used, effective method of treating localized prostate cancer is implantation of small radioactive seeds. The standard imaging modality for treatment-planning dosimetry and for guiding and monitoring seed implantation is transrectal ultrasound (TRUS). However, movement of the prostate during seed insertion can cause seed misplacement, hemorrhage, and clutter from calcifications and other...
Choosing an appropriate dynamic range for acquiring radio-frequency (RF) data from a high-frequency ultrasound (HFU) system is challenging because signals can vary greatly in amplitude because of focusing and attenuation effects. In addition, quantitative ultrasound (QUS) methods are sensitive to saturated data. In this study, the effects of saturation on QUS estimates of effective scatterer diameter...
Ultrasound-guided brachytherapy using small titanium-shelled radioactive seeds is an effective means of treating prostate cancer. Unfortunately, implantation using needles inserted transperitoneally causes gland movement and distortion, which often results in dosimetry errors. If actual seed locations could be determined in the operating room, then corrections to dosimetry errors could be made immediately...
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