1. Benson MC, Whang IS, Pantuck A, Ring K, Kaplan SA, Olsson CA, Cooner WH. Prostate specific antigen density: a means of distinguishing benign prostatic hypertrophy and prostate cancer. J Urol 1992;147:815-816.
2. McNeal JE. Regional morphology and pathology of the prostate. Am J Clin Pathol 1968;49:347-357.
3. Choi BI. Ultrasound diagnosis of the abdomen. In: Moon MH, Kim SH, editor. Prostate. Seoul: Ilchokak; 2006. p. 346-360.
5. Littrup PJ, Bailey SE. Prostate cancer: the role of transrectal ultrasound and its impact on cancer detection and management. Radiol Clin North Am 2000;38:87-113.
6. Lee SE, Byun SS, Lee HJ, Song SH, Chang IH, Kim YJ, Gill MC, Hong SK. Impact of variations in prostatic apex shape on early recovery of urinary continence after radical retropubic prostatectomy. Urology 2006;68:137-141.
7. Lee SE, Byun SS, Hong SK, Lee HJ, Kim YJ, Chang IH, Gill MC. Anatomical analysis of prostate and surrounding struc-tures: points to consider during radical retropubic prostatectomy. Korean J Urol 2006;47:568-577.
8. Lee HJ, Chung JH. The application of contrast enhanced ultrasound in molecular imaging. J Korean Soc Ultrasound Med 2009;28:139-145.
9. Seitz M, Gratzke C, Schlenker B, Buchner A, Karl A, Roosen A, Singer BB, Bastian PJ, Ergün S, Stief CG, Reich O, Tilki D. Contrast-enhanced transrectal ultrasound (CE-TRUS) with cadence-contrast pulse sequence (CPS) technology for the identification of prostate cancer. Urol Oncol 2011;29:295-301.
10. Jiang J, Chen Y, Zhu Y, Yao X, Qi J. Contrast-enhanced ultrasonography for the detection and characterization of prostate cancer: correlation with microvessel density and Gleason score. Clin Radiol 2011;66:732-737.
11. Weidner N, Carroll PR, Flax J, Blumenfeld W, Folkman J. Tumor angiogenesis correlates with metastasis in invasive prostate carcinoma. Am J Pathol 1993;143:401-409.
12. Li Y, Tang J, Fei X, Gao Y. Diagnostic performance of contrast enhanced ultrasound in patients with prostate cancer: a meta-analysis. Acad Radiol 2013;20:156-164.
13. Mitterberger M, Pinggera GM, Horninger W, Bartsch G, Strasser H, Schafer G, Brunner A, Halpern EJ, Gradl J, Pallwein L, Frauscher F. Comparison of contrast enhanced color Doppler targeted biopsy to conventional systematic biopsy: impact on Gleason score. J Urol 2007;178:464-468.
15. Brock M, von Bodman C, Palisaar RJ, Loppenberg B, Sommerer F, Deix T, Noldus J, Eggert T. The impact of real-time elastography guiding a systematic prostate biopsy to improve cancer detection rate: a prospective study of 353 patients. J Urol 2012;187:2039-2043.
16. Barr RG, Memo R, Schaub CR. Shear wave ultrasound elastography of the prostate: initial results. Ultrasound Q 2012;28:13-20.
17. Fiard G, Hohn N, Descotes JL, Rambeaud JJ, Troccaz J, Long JA. Targeted MRI-guided prostate biopsies for the detection of prostate cancer: initial clinical experience with real-time 3-dimensional transrectal ultrasound guidance and magnetic resonance/transrectal ultrasound image fusion. Urology 2013;81:1372-1378.
18. Sonn GA, Natarajan S, Margolis DJ, MacAiran M, Lieu P, Huang J, Dorey FJ, Marks LS. Targeted biopsy in the detection of prostate cancer using an office based magnetic resonance ultrasound fusion device. J Urol 2013;189:86-91.