Clinic and Polyclinic for Internal Medicine III, University Hospital Regensburg, Regensburg, Germany.
Institute for Diagnostic Radiology and Interdisciplinary Ultrasound, University Hospital Regensburg, Regensburg, Germany.
Clin Hemorheol Microcirc. 2024;88(s1):S45-S56. doi: 10.3233/CH-248104.
Ultrasound-guided interventions (such as biopsies) of unclear lesions are indicated if microcirculatory changes indicate possible malignant lesions. These place high demands on the ultrasound device used. In order to potentially reduce the often associated high technical effort, the wireless ultrasound device Vscan AirTM was examined as a possible ultrasound device for the intervention biopsy.
As part of an advanced training course on Computertomographie- and ultrasound-guided biopsy and ablation procedures, participants were asked about the image quality of the handheld device used by means of questionnaires. Various lesions were evaluated at a depth of 1.0 to 5.0 cm in an in vitro liver model. The image quality was evaluated independently before, during and after the intervention. The rating scale contained values from 0 (no assessment possible) to 5 (maximum high image quality). A high-end device was used as a reference.
A total of 11 participants took part in the study (n = 4 male [36.4%], n = 7 female [63.6%]). A total of five tumor like lesions at different depths (1 cm, 2 cm, 3 cm, 4 cm, >4 cm) were assessed separately. In all cases, an adequate biopsy of the target lesion (1 cm in length, core filling 5 mm) was successful. From a depth of 3 cm, the image quality of the mobile device increasingly decreased, but the image quality of the high-end system was still not impaired. Compared to the high-end device, there was a highly significant difference in image quality from a depth of 3 cm (p < 0.01). Assessment by inexperienced examiners using a handheld device was adequately possible.
Mobile interventional ultrasound represents a potential alternative for the biopsy of unclear tumorous lesions with microcirculatory disorders with limited depth localization.
如果微循环变化提示可能存在恶性病变，则需要对不明原因的病变进行超声引导介入（如活检）。这对所使用的超声设备提出了很高的要求。为了可能降低通常与之相关的高技术难度，研究人员考察了无线超声设备 Vscan AirTM 作为介入性活检的超声设备的可能性。
在计算机断层扫描和超声引导活检和消融程序的高级培训课程中，通过问卷调查的方式向参与者询问所使用的手持式设备的图像质量。在体外肝脏模型中，于 1.0 至 5.0cm 的深度评估各种病变。在干预前、干预中和干预后独立评估图像质量。评分标准的值从 0（无法评估）到 5（最高图像质量）。使用高端设备作为参考。
共有 11 名参与者参加了研究（n=4 名男性[36.4%]，n=7 名女性[63.6%]）。分别评估了五个不同深度的肿瘤样病变（1cm、2cm、3cm、4cm、>4cm）。在所有情况下，均成功地对目标病变进行了适当的活检（长度 1cm，核心填充 5mm）。从 3cm 深度开始，移动设备的图像质量逐渐下降，但高端系统的图像质量仍未受损。与高端设备相比，从 3cm 深度开始，图像质量存在显著差异（p<0.01）。使用手持式设备由经验不足的检查人员进行评估是足够的。
移动介入性超声是一种有潜力的替代方法，可用于对有微循环障碍的不明原因肿瘤性病变进行有限深度定位的活检。
