Journal of X-Ray Science and Technology - Volume 21, issue 2

Authors: Tao, Wei | Yang, Dongrong | Shan, Yuxi | Xue, Boxin | Sun, Chuanyang | Zang, Yangchen | Zhang, Yuanyuan

Article Type: Research Article

Abstract: OBJECTIVE: We evaluated the safety and efficacy of 120W potassium-titanyl-phosphate (KTP) laser vaporization on patients with non-muscle invasive bladder cancer compared with standard transurethral resection of bladder tumor (TUR-BT). MATERIALS AND METHODS: One hundred and fifty-eight patients of non-muscle invasive bladder cancer who underwent either 120W potassium-titanyl-phosphate (KTP) laser vaporization (HPS group, n=74) or transurethral resection of the bladder tumor (TUR-BT group, n=84) were analyzed respectively. The preoperative, intraoperative …and postoperative clinical data were recorded and compared in two groups. RESULTS: All patients were successfully treated with 120W-KTP laser vaporization or TUR-BT. No significant differences were observed in operative time, perioperative and postoperative serum sodium and hemoglobin levels between two groups. Importantly, HPS had less specific side effects of TURBT, such as obturator nerve reflex, postoperative bladder irrigation and catheterization time, which shows statistic difference significantly (p< 0.05). Recurrence rate was lower in HPS group than those in TUR-BT group. CONCLUSION: The 120W-HPS KTP laser as a safe and feasible procedure provids an alternative for the patients with non-muscle invasive bladder cancer, especially for those on anticoagulation therapy. Show more

Keywords: Bladder cancer, transurethral resection, laser surgery

DOI: 10.3233/XST-130379

Citation: Journal of X-Ray Science and Technology, vol. 21, no. 2, pp. 309-316, 2013

Authors: Chen, Gui-Bing | Wu, Hua | He, Xiao-Jiang | Huang, Jin-Xiong | Yu, Dan | Xu, Wei-Yi | Yu, Hao

Article Type: Research Article

Abstract: The aims of this study were to evaluate the diagnostic value of adenosine thallium-201 myocardial perfusion imaging and to compare it with exercise stress thallium-201 myocardial perfusion imaging for detecting coronary artery disease (CAD) at an early stage. Forty-one patients suspected with CAD were randomly divided into two groups. In Group 1 (n=21) adenosine stress was undertaken; the exercise stress myocardial perfusion imaging was performed in Group 2 (n=20). Coronary angiography (CAG) was performed in …each patient within 2 weeks before or after single photon emission computed tomography (SPECT). Adenosine stress group vs. exercise stress group, the sensitivity was 92.86% vs. 100.0%, specificity 57.14% vs. 60.0%, positive predictive value 81.25% vs. 71.43%, negative predictive value 80.0% vs. 100.0%, accuracy 80.95% vs. 80.0% respectively. Detection rates of vessels of coronary artery lesions were 66.67% in Group 1 and 72.22% in Group 2 (P> 0.05). The side effects were mild and transient. Our results demonstrated that adenosine stress myocardial perfusion imaging is a safe and reliable diagnostic method for an early stage of CAD. As a comparative sensitivity and accuracy with exercise stress thallium-201 myocardial perfusion imaging, adenosine stress testing may provide a feasible alternative pharmacological stress method in myocardial SPECT for detection of CAD. Show more

Keywords: Coronary artery disease, myocardial perfusion imaging, adenosine, thallium-201

DOI: 10.3233/XST-130380

Citation: Journal of X-Ray Science and Technology, vol. 21, no. 2, pp. 317-322, 2013