Preoperative prediction of Ki-67 expression in hepatocellular carcinoma by spectral imaging on dual-energy computed tomography (DECT).

Background: The Ki-67 expression level, which represents the proliferation status of cells, serves as a prognostic marker for hepatocellular carcinoma (HCC); however, the immunochemistry method currently used to evaluate Ki-67 is invasive and is not suitable for patients who have lost the chance for surgery, such as those with advanced tumors or those with other serious organic diseases. This study aimed to investigate the value of quantitative dual-energy computed tomography (DECT) parameters in predicting the expression level of Ki-67 in HCC.

Methods: This study analyzed the data of 123 consecutive patients with HCC who underwent both Ki-67 immunohistochemistry analysis and two-phase contrast-enhanced DECT imaging.

Comparison of two methods for CT-guided pulmonary nodule location before thoracoscopic surgery.

Introduction: Preoperative computed tomography (CT)-guided localization can shorten the time of video-assisted thoracoscopic surgery (VATS) and accurately aid in pulmonary nodule removal.

Aim: To discuss the application value and safety of 2 kinds of breast localization needles and anchor localization needles in clinical practice for pulmonary nodules under CT guidance before VATS.

Material And Methods: We retrospectively studied 215 patients with 247 pulmonary nodules, who underwent CT-guided pulmonary nodule location before VATS.