Background: Prostate cancer (PCa) is a leading dreadful cancer amid aged men in the
United States. During past few decades, a number of studies have been carried out in both medical
field and imaging technology for PCa detection and diagnosis.
Techniques: Imaging technology-based diagnosis includes TRUS, MRI and CT at the macroscopic
level and histological images at the microscopic level.
Discussion: To assist novice researchers for a better understanding of prostate segmentation techniques,
this article mainly presents the survey of various delineation techniques for prostate pertaining
to different modalities i.e. TRUS, MRI and CT, which is an important auxiliary phase in
PCa diagnosis. This paper also highlights various PCa grading approaches based on histology imaging
with certain gaps that need to address for timely and precise diagnostic recommendations to
suppress mortality rates globally. Quantitative/qualitative evaluation and analysis of the existing
state-of-the-art segmentation techniques along with their strength and limitations as described in
literature is also presented.
Conclusion: Prostate delineation is still an open challenge and with progression of technology for
identification, medication and follow up of prostate diseases, new prerequisites have to be realized.