Clinical Trials Logo

Clinical Trial Summary

The purpose of this study is to assess the feasibility of UHFUS on detection of GGOs in excised lung tissue and investigate UHFUS features of GGO in vitro. Each GGO was detected by palpation, UHFUS and open biopsy in sequence. The comparison of detection rate and time consumption were analyzed respectively. The Bland-Altman analysis was used to estimate the agreement of tumor size measured by CT, UHFUS and pathology.


Clinical Trial Description

Lung cancer (LC) is a leading cause of mortality worldwide. According to the International Agency for Research (IARC) on Cancer, LC was projected to contribute to 2.3 million new cancer cases and 1.8 million deaths worldwide in 2020. With widespread use of chest computed tomography (CT), LC is increasingly detected at an early stage, in which 63%-95% lesions present as ground glass opacity (GGO). GGO refers to a non-specific radiological appearance, referring to a focal, hazy shadow with increased attenuation that does not obscure the contours of bronchi or blood vessels on CT. It can be benign lesions, preinvasive, or invasive adenocarcinoma. Surgery is the main treatment for suspected malignant GGOs. Whether excised targeted GGOs thoroughly affects patients' prognosis crucially, especially for patients with multiple GGOs. Generally, the most frequent intraoperative location approach of pulmonary nodules is palpation, which distinguished by the texture between normal lung tissue and nodules. However, different from solid nodules, the texture of GGO nodules is similar to lung parenchyma that increases the difficulty of palpation localization. Thus, detection of GGOs and in lung tissue poses a common challenge, particularly in the presence of pure GGO (tumor without an solid component) and small GGO nodules (≤1cm). In the current clinical practice, even with preoperative localization (CT-guided percutaneous and intraoperative electromagnetic navigation bronchoscopy), it remains challenging to confirm complete resection of all small, pure GGOs. Therefore, there is an urgent need for a new method that can accurately evaluate nodules in excised lung tissue. Since Roberto used thoracoscopic ultrasound (TUS) to examine pulmonary nodules in 1999, subsequently, several studies have validated the safety and efficacy for using US in identifying pulmonary nodules intraoperatively. However, past research all focused on solid nodules or large nodules (maximum diameter more than 2cm) using 5-12MHz US transducer. Few studies have studied the detection rate of small GGO nodules. Previous studies have found 12MHz of US probe could show pulmonary nodules better than 5MHz and 7.5MHz. Ultrahigh frequency ultrasound (UHFUS) refers to higher frequency (≥20MHz) ultrasound waves with higher resolution even less than 50μm. It is capable to display nodules less than 3mm distinctively in the extremely superficial tissue, which may satisfy intraoperative GGO imaging requirement. Therefore, the objects of this study are to assess the feasibility of localizing GGOs in excised lung tissue by UHFUS and further summarize its UHFUS features. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05994898
Study type Observational
Source Peking Union Medical College Hospital
Contact Xuehan Gao, MD
Phone +86 18801341299
Email gaoxh1299@163.com
Status Recruiting
Phase
Start date January 4, 2023
Completion date June 30, 2024

See also
  Status Clinical Trial Phase
Completed NCT04546867 - Establishing a Sonographic Based Algorithm to Verify Pancreatic Stent Position Placed to Prevent Post-ERCP Pancreatitis Before Endoscopic Removal N/A
Not yet recruiting NCT06053892 - AR US Versus sUS or Fluoroscopic Injections for Shoulder Punction N/A
Completed NCT05013476 - Tele-Ultrasound: VIrtual Hands-on Education for Novice Users N/A
Completed NCT04554472 - Usefulness of Intraoperative Ultrasound in a Volar Plate Distal Radius Fixation
Not yet recruiting NCT06456957 - Fetal Abdominal Subcutaneous Tissue Thickness in Prediction of Fetal Weight in Term Pregnant Women
Not yet recruiting NCT04550793 - Using Shear Wave Ultrasound Elastography for Follow up After Anti-spastic Intervention Among Stroke Patients
Completed NCT03563196 - Diagnosis Of Pulmonary Complications After Cardiac Surgery In Children
Completed NCT01666626 - Ultrasound Stiffness Imaging in Crohn's Disease N/A
Active, not recruiting NCT04928560 - Diagnosis of Superficial Lymphadenopathy
Recruiting NCT05938790 - Point of Care Ultrasound in Obstetric Triage N/A
Completed NCT06098105 - Laparoscopic vs Ultrasound-Guided Transversus Abdominis Plane Block vs Laparoscopic Intraperitoneal Instillation of Local Anesthetic in Pediatrics N/A
Recruiting NCT02834585 - Magnetic Resonance Imaging or Ultrasound in Soft Tissue Tumors (MUSTT) N/A
Completed NCT02661607 - Point of Care Echocardiography Versus Chest Radiography for the Assessment of Central Venous Catheter Placement N/A
Completed NCT01519167 - Open-Label, Safety Study Evaluating the Use of Dexmedetomidine in Pediatric Subjects Undergoing Procedure-Type Sedation Phase 4
Completed NCT04612816 - Live Stream of Ultrasound in Prehospital Medical Care
Active, not recruiting NCT06195488 - Gastric Ultrasound in Diabetic Patients
Recruiting NCT06199856 - Assessment System for Sarcopenia Based on Ultrasonographic Data
Completed NCT04574258 - Prospective Multicenter Study on Clinical Application of Sonozoid in Thyroid Tumor
Not yet recruiting NCT04563897 - Prospective Multicenter Study on Clinical Application of Sonazoid in Liver Tumor
Completed NCT04124770 - Neck Position and Ultrasound Landmark of Cricothyroid Membrane