Value Of High-frequency Ultrasonography Research Articles

Value of high frequency ultrasonography in differential diagnosis of mesenteric lymphadenitis and acute appendicitis in children.

article: Value of high frequency ultrasonography in differential diagnosis of mesenteric lymphadenitis and acute appendicitis in children - Minerva Pediatrics 2022 June;74(3):389-91 - Minerva Medica - Journals

The utilization of hight-frequency ultrasonography in diagnosis and treatment of peripheral nerve injury

Objective To observe the value of high-frequency ultrasonography in the diagnosis and treatment of peripheral nerve injury. Methods A total of 22 patients with peripheral nerve injury were examined by high-frequency ultrasonography for the cause of nerve injury. The operative decisions were made according the results of ultrasonography and electroneurophysiology examination. The coincidence rate of ultrasongraphy with intraoperative findings was calculated and the nerve function of patients was followed-up for 1 year to estimate the therapy effects. Results The causes and positions of nerve injury were found by ultrasonography, which were consisted with the intraoperation findings and the coincidence rate was 100%. The function of lesioned nerves was improved after the surgical treatment. The motor nerve conduction velocities (MCV) of 12 patients with conservative treatment were increased(P<0.01) after 1 year of follow-up, the pre-operation MCV, postoperation MCV and the increased rate were (36.7±12.2) m/s, (48.2±14.4) m/s and 35.0%, respectively. While the MCV of 10 operating patients were increased (P<0.01) too, the pre-operation MCV, postoperation MCV and the increased rate were (20.8±7.9) m/s, (39.6±13.2) m/s and 102.8%, respectively. Conclusions High-frequency ultrasonography was a suitable imaging diagnosis tool for peripheral nerve injury. Accompanying with electrophysiological examination, it could explore the causes of nerve injury, determine the treatment and avoid unnecessary operation. Key words: Peripheral nerves; Ultrasonography; Electrophysiological examination

Value of high frequency ultrasonography in acute closed mallet finger

Objective To study the clinical value of high frequency ultrasonography in acute closed mallet finger.Methods The high frequency ultrasonographic images of thirty-six patients with diagnosed acute closed mallet finger were retrospective analyzed.The ultrasonographic features were analyzed.Results The position and internal structure of extensor tendon could be showed by high frequency ultrasound,the position and injury level of acute closed mallet finger were identified.In 36 patients of acute closed mallet finger,6 cases were complete tear combined avulsion fracture,the ultrasonography showed the disruption in the extensor tendon at the level of the distal interphalangeal joint,the hyperechoic fracture fragment were found in the distal end of extensor tendon.22 cases were complete tear and no avulsion fracture,the longitudinal imaging showed the disruption in the extensor tendon at the level of the distal interphalangeal joint and the retraction of the tendon end.8 cases were partial tear,the ultrasonography showed that extensor tendons were thickened and hypoechoic,the section of extensor tendons were still continuous.Conclusions High frequency ultrasonography is the preferred imaging method for diagnosis of acute closed mallet finger,it will be important value for clinical treatment method. Key words: Ultrasonography; Mallet finger; Extensor tendon

Value of High Frequency Ultrasonography in Diagnosis and Surgical Repair of Traumatic Finger Tendon Ruptures

Objective: To investigate the value of high frequency ultrasonography in the diagnosis of zone 2 flexor tendon injuries. Subjects and Methods: Ninety-two patients (49 males and 43 females, mean age 32.6 ± 11.2 years) with zone 2 flexor tendon injuries in one or more digits were randomly divided into a study (n = 46, 95 digits) and a control group (n = 46, 90 digits). In the study group, preoperative ultrasound was performed and surgical repair was conducted based on ultrasonographic findings. Diagnosis and surgical repair of the control group was based on history of trauma and physical examination. Results: Types of ruptures (complete or partial) and the location of the distal end of the ruptured tendon diagnosed by preoperative ultrasonography were consistent with surgical findings in all cases (95/95, 100%) of the study group, whereas the concordance rate between clinically diagnosed ruptures and surgical findings was only 34.4% (31/90) in the control group (p = 0.02). Conclusion: Preoperative high frequency ultrasound examination yielded excellent diagnostic accuracy for zone 2 flexor tendon injuries.

Value of High-frequency Ultrasonography with Virtual Touch Tissue Quantification in Diagnosis of Breast Pure Mucinous Carcinomas

Objective: To analyze the characters of breast pure mucinous carcinomas on high-frequency ultrasonography with Virtual Touch Tissue Quantification (VTQ). Methods: A total of 12 patients (with breast pure mucinous carcinomas) and a group of 30 patients (with adenofibroma of breast) underwent breast examination with high-frequency ultrasonography to analyze the characters of images, and with VTQ to analyze the elastic character. Results: In the conventional ultrasound imaging, statistical differences were found between two groups in the shape, the boundary and the internal echo of the lesions. In the VTQ, the mean of shearing wave speed (Vs) in pure mucinous carcinomas is less than in adenofibroma of breast. Conclusion: Conventional high-frequency ultrasonography combining with VTQ have significant value in diagnosis of breast pure mucinous carcinoma.

Clinical Value of High Frequency Ultrasonography in Diagnosis of Testicular Torsion

Objective To investigate the clinical value of high frequency uhrasonography(HFU),color Doppler flow imaging(CDFI)and color Doppler power imaging(CDPI)in the diagnosis of testicular torsion.Methods A total of 33 patients with the testis of torsion were chosen seguentially and confirmed with the clinical diagnosis.The shape.size and intemal echoes of the testis and epididymis were observed with HFU.Their blood flow were observed with CDFI and CDPI.Results The sensitivity,specificity and accuracy in diagnosis of testicular torsion by HFU were 97%、80%、95%respectively.Conclusion HFU.CDFI and CDPI play very important roles in the diagnosis of testicular torsion. Key words: High frequency ultrasonography; Color Doppler flow imaging; Color Doppler power imaging; Testicular torsion