Portable 5-DOF measurement system using a parallel beam generation method for linear axis detection.

Geometric error detection is crucial for evaluating the accuracy of the linear axis. However, the practicality of traditional dual-beam detection systems is limited by the parallelism of beams. This study proposes a portable 5-DOF measurement system using a novel parallel beam generation method.

[Impact of early enteral nutrition on the intestinal motility of patients after esophagectomy].

Objective: To assess the impact of early enteral nutrition (EN) on the intestinal motility of patients after esophagectomy.

Methods: Thirty-five consecutive patients undergoing esophagectomy for esophageal cancer by a single surgical team from the Peking University Cancer Hospital from June 2011 to July 2011 were enrolled. Patients were randomly divided into EN group (n=20) and parenteral nutrition group (control group, n=15) within 24 h after esophagectomy procedure.

[Efficacy analysis of comprehensive treatment in small cell esophageal carcinoma following resection].

Objective: To summarize the surgical outcome of patients with small cell esophageal carcinoma(SCEC).

Methods: Clinical data of patients with esophageal carcinoma were retrospectively collected from March 2000 to March 2011 at the Thoracic Surgery Department of the Peking University Cancer Hospital. Data included tumor characteristics, staging, treatment, response, short-term outcome, and long-term survival.

[Outcome after surgery preserving pharynx and larynx for cervical esophageal cancer].

Objective: To evaluate the long-term survival of multidisciplinary treatment based on thoracic surgery for cervical esophageal squamous cell carcinoma.

Methods: The clinical characters and follow-up data of forty-one cervical esophageal cancer patients who accepted multidisciplinary treatment based on surgery with preservation of pharynx and larynx were retrospectively reviewed, and the long-term survival was compared with 480 non-cervical esophageal cancers who accepted surgery in the same period done by the same surgical team.

Results: There were 28 males and 13 females with a mean age of 62 years old.

[Multidisciplinary therapy for multi-focal esophageal cancer].

Objective: To explore the management strategies and outcome of treatment for multi-focal esophageal carcinoma.

Methods: Twenty two patients with multi-focal esophageal carcinoma who underwent esophagectomy by a single surgeon team from March 2000 to March 2011 at the Beijing Cancer Hospital were reviewed retrospectively. The clinical and pathological characters were analyzed, and the outcome was compared with that of 471 patients with single esophageal carcinoma who received esophagectomy by the same surgeon team during the same period.

[The pathological feature of primary hepatic carcinoma on explanted liver and its significance].

Objective: To investigate the pathological feature of primary hepatic carcinoma and the clinical significance.

Methods: From August 2000 to December 2007, there were 89 patients with cirrhosis and carcinoma of liver who accepted whole liver resection. The whole liver was cut into 10 mm slices to examine the tumor size, number, distribution, capsule, satellite nodes, portal vein tumor thrombi (PVTT).

[Long-term efficacy of transhiatal esophagectomy for esophageal carcinoma and esophagogastric junction cancer].

Objective: To evaluate the long-term efficacy of transhiatal esophagectomy (THE) for esophageal carcinoma or esophagogastric junction cancer.

Methods: Between March 2000 and December 2009, a total of 544 patients with either esophageal carcinoma or esophagogastric junction cancer underwent esophagectomy via THE (n=63) or other approaches (n=481) in Beijing cancer hospital institution. Procedures were performed by a single surgeon team.

[Clinical values of color doppler ultrasound and magnetic resonance angiography in diagnosis of the tumor emboli and thrombi in portal venous system].

Objective: To evaluate the clinical values of color Doppler ultrasound (BUS?) and magnetic resonance angiography (MRA) in diagnosis of the tumor emboli and thrombi in portal venous system.

Methods: Examination of the portal venous system by BUS and MRA was conducted on 165 patients with undergoing liver transplantation because of cirrhosis or primary hepatic carcinoma before the operation. The extrahepatic portal vein was observed during operation and pathological examination was conducted after the operation.