Feasibility of a transurethral ultrasound applicator for coagulation in prostate
| Autor: | Sabrina Chesnais, Dominique Cathignol, Cyril Lafon, Y. Theillere, Laurent Koszek |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Male
medicine.medical_specialty Acoustics and Ultrasonics Ultrasonic Therapy medicine.medical_treatment Transducers Prostatic Hyperplasia Biophysics Urology Surgical methods Necrosis Prostate medicine Animals Coagulation (water treatment) Radiology Nuclear Medicine and imaging Ultrasonography Transurethral resection of the prostate Histological examination Miniaturization Radiological and Ultrasound Technology Hemostatic Techniques business.industry Ultrasound Thrombosis Equipment Design Hyperplasia medicine.disease medicine.anatomical_structure Liver Regional Blood Flow Feasibility Studies Female Rabbits Radiology business After treatment |
| Zdroj: | Ultrasound in Medicine & Biology. 30:113-122 |
| ISSN: | 0301-5629 |
| DOI: | 10.1016/j.ultrasmedbio.2003.10.009 |
| Popis: | Transurethral resection of the prostate (TURP) is the surgical method routinely used in clinics to treat benign prostate hyperplasia (BPH). The purpose of this work is to demonstrate the feasibility of a transurethral ultrasound (US) applicator based on a miniature US flat transducer to coagulate prostatic tissues. Rabbit liver was found to comply well with human prostate. A significant fall in Doppler signal amplitude immediately after treatment demonstrated the applicator's ability to achieve haemostasis. The therapeutic depth extended from 6 to 10 mm, depending on conditions of exposure, and the coagulation rate ranged between 51% and 99%. The coagulated zone pinpointed on histological examination could be easily correlated to a permanent hypoechoic zone observed on B-scans of treated zones. This observation is most likely due to temperature-related changes in the acoustic attenuation of liver and, unfortunately, may not be visible in the prostate. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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