Mueller-Lisse U G, Heuck A F, Schneede P, Muschter R, Scheidler J, Hofstetter A G, Reiser M F
Institute of Diagnostic Radiology, Klinikum Grosshadern, University of Munich, Germany.
J Comput Assist Tomogr. 1996 Mar-Apr;20(2):273-8. doi: 10.1097/00004728-199603000-00019.
We conducted MRI of the effects of laser-induced thermal therapy (LITT) in benign prostatic hyperplasia (BPH).
Eighteen patients (average age 64 years) were examined with MRI 24-48 h before and after LITT of BPH. Sagittal and axial T2-weighted FSE MR images were evaluated for signs of coagulation necrosis in the prostate gland and the presence of intra- and extraprostatic edema.
Coagulation areas showed as a hypointense central core with a hyperintense rim. Intraprostatic edema led to a volume increase of 18-108% both in the central and in the total gland. Periprostatic edema was severe in preprostatic and prevesical tissue as well as lateral to the prostate, moderate in the presacral space, and mild perirectally and dorsal to the prostate. Follow-up examinations 2 weeks to 6 months after LITT in five patients showed decrease of coagulation necrosis volume, prostate size, and edema.
MRI appears to be a reliable method to monitor LITT effects in patients with BPH.
我们对激光诱导热疗（LITT）治疗良性前列腺增生（BPH）的效果进行了磁共振成像（MRI）研究。
18例患者（平均年龄64岁）在BPH的LITT治疗前后24 - 48小时接受了MRI检查。对矢状位和轴位T2加权快速自旋回波（FSE）MR图像进行评估，观察前列腺内凝固性坏死的迹象以及前列腺内和前列腺外水肿的情况。
凝固区域表现为低信号的中央核心伴高信号边缘。前列腺内水肿导致中央腺体和整个腺体的体积增加18% - 108%。前列腺周围水肿在前列腺前和膀胱前组织以及前列腺外侧严重，在骶前间隙中度，在直肠周围和前列腺背侧轻度。对5例患者在LITT后2周 - 6个月进行的随访检查显示凝固性坏死体积、前列腺大小和水肿均减小。
MRI似乎是监测BPH患者LITT效果的可靠方法。
