良性前列腺增生超声造影的初步研究

目的:分析并评价BPH的超声造影表现,探讨超声造影对研究BPH血流灌注的价值。方法:对48例经直肠超声引导下穿刺活检、病理证实为BPH的患者进行超声造影检查,观察前列腺内腺及外腺的超声造影表现并制作时间-强度曲线,分析超声造影开始增强时间、造影开始减退时间、造影剂渡越时间及峰值强度。结果:前列腺为富血供器官,造影增强明显。48例BPH患者前列腺内腺及外腺开始增强的时间分别为(26.68±3.76)、(31.24±5.33)s,内腺开始增强的时间显著早于外腺,尤以尿道周围区及内腺的包膜处明显(P=0.000);内腺及外腺造影剂完全退出时间分别为(200.68±59.40)、(157.56±50.66)s,内腺造影剂完全退出时间显著晚于外腺(P=0.000);内腺及外腺造影剂渡越时间分别为(173.94±60.14)、(129.21±56.91)s,内腺造影剂渡越时间显著长于外腺(P=0.000)。内腺及外腺造影峰值强度分别为(90.45±42.19)、(65.32±25.15)dB,内腺造影峰值强度显著高于外腺(P=0.000)。结论:超声造影检查能够连续观察BPH的血流灌注情况,有望成为研究BPH血流状况的有效方法。

A Preliminary Study of Contrast-enhanced Ultrasound in Benign Prostatic Hyperplasia

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). CONCLUSION: 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.