Abstract
Article: High-Intensity Focused Ultrasound (HIFU) and the Clinical Applications for the Female Pelvis: A Literature Review
Authors: Beth Darby, BSDMS, RDMS
Category: General Sonography/Gynecology
Credit: 1.0 SDMS CME Credit
Objectives: After studying the article entitled “High-Intensity Focused Ultrasound (HIFU) and the Clinical Applications for the Female Pelvis: A Literature Review,” you will be able to:
Describe the equipment used for high-intensity focused ultrasound (HIFU)
Determine appropriate applications for HIFU in the female pelvis
Explain the limitations of HIFU in the female pelvis
The two primary components of a high-intensity focused ultrasound (HIFU) system are Preprocedure computed tomography and postprocedure cytology The transducer and preprocedure computed tomography The transducer and the ability to monitor the ablation process The transducer and postprocedure cytology
Typical transmit frequencies used for HIFU systems range from 200 kHz to 1 MHz 600 kHz to 7 MHz 2 to 5 MHz 5 to 7 MHz
Thermal damage to cells can occur with exposures as low as 56°C for 1 second 60°C for 1 second 62°C for 2 seconds 65°C for 5 seconds
Short high-intensity ultrasound pulses used to create cavitation have amplitudes up to 10 MPa 25 MPa 50 MPa 100 MPa
Studies have shown that when using HIFU to treat adenomyosis, the average nonperfused volume ratio postprocedure is approximately 10% to 20% 30% to 40% 50% to 60% 60% to 70%
The most common tumor of the female reproductive system is Cervicitis Adenomyosis Uterine fibroid Ovarian cancer
Preprocedure T2-weighted magnetic resonance images of a uterine fibroid showing an image intensity between that of myometrium and skeletal muscle would be classified as Type 1 Type 2 Type 3 Type 4
The most common gynecologic condition worldwide in women of reproductive age is Polycystic ovaries Adenomyosis Uterine fibroids Ovarian cancer
A report of using HIFU to treat women with abnormal cervical cells showed at follow-up there was no colposcopic visualized evidence of cervicitis in approximately ______ of patients 33% 50% 75% 90%
A sonication in the targeted tissue is The application of HIFU The elliptical-shaped lesion secondary to bioeffects The measured temperature rise in the affected tissue A residual gas bubble in the affected tissue
Footnotes