title: [A preliminary study of contrast-enhanced ultrasound in benign prostatic hyperplasia].
abstract: OBJECTIVE
  To analyze and evaluate the characteristics of benign prostatic hyperplasia (BPH) on contrast-enhanced ultrasound.
  
  
  METHODS
  Forty-eight BPH patients confirmed by transrectal ultrasound-guided biopsy underwent contrast-enhanced ultrasound. Contrast pulse sequencing technique (CPS) and quantitative software-ACQ were used, and the parameters of beginning enhancement time, disappearing and transit time and peak intensity (PI) of the inner gland and outer gland were recorded and analyzed.
  
  
  RESULTS
  The prostate was rich with blood and enhanced significantly on contrast-enhanced ultrasound. The beginning enhancement time of the prostatic inner gland, especially the area around the urethra, was much earlier than that of the outer gland, (26.68 +/- 3.76) and (31.24 +/- 5.33) s, respectively (P = 0.000). The contrast disappeared later in the inner gland than in the outer gland, (200.68 +/- 59.40) and (157.56 +/- 50.66) s, respectively (P = 0.000). The transit time of the contrast in the inner gland was much longer than in the outer gland, (173.94 +/- 60.14) and (129.21 +/- 56.91) s, respectively (P = 0.000). PI of the inner gland was much higher than that of the outer gland, (90.45 +/- 42.19) and (65.32 +/- 25.15) dB, respectively (P = 0.000).
  
  
  CONCLUSIONS
  Contrast-enhanced ultrasound makes it possible to continuously observe the blood perfusion process of BPH, and promises to be an effective means for observing the blood supply in BPH.
authors.affiliation: Department of Ultrasound, PLA General Hospital, Beijing 100853, China. txiner@vip.sina.com
authors.forename: Jie
authors.initials: J
authors.lastname: Tang
authors.forename: Zhi-Li
authors.initials: ZL
authors.lastname: Wang
authors.forename: Jun-Lai
authors.initials: JL
authors.lastname: Li
authors.forename: Yu-Kun
authors.initials: YK
authors.lastname: Luo
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Jian-Hong
authors.initials: JH
authors.lastname: Xu
authors.forename: Huai-Yin
authors.initials: HY
authors.lastname: Shi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D007089:Image Enhancement; D008297:Male; D008875:Middle Aged; D011467:Prostate / Q000098:blood supply / Q000000981:diagnostic imaging* / Q000473:pathology; D011470:Prostatic Hyperplasia / Q000000981:diagnostic imaging*; D012039:Regional Blood Flow; D015203:Reproducibility of Results; D014463:Ultrasonography / Q000379:methods*