[Electronic nose, HS-GC-MS, and relative odor activity value reveal odor differences and material basis of Glycyrrhizae Radix et Rhizoma products processed with different methods].

The Glycyrrhizae Radix et Rhizoma products processed with different methods, including raw materials(S) and products processed with honey according to the method in the Chinese Pharmacopoeia(Z) and Jianchangbang method(M), were analyzed in terms of the odor profile and volatile components by the electronic nose and headspace-gas chromatography-mass spectrometry(HS-GC-MS). The differential components in the three products were screened by chemometrics, on the basis of which the relative odor activity value(ROAV) was adopted to elucidate the odor differences among different products and the material basis of their odors. The results showed that the electronic nose effectively distinguished the products of Glycyrrhizae Radix et Rhizoma processed with different methods.

evaluation of focused ultrasound ablation surgery (FUAS)-induced coagulation using echo amplitudes of the therapeutic focused ultrasound transducer.

Objective: Monitoring sensitivity of sonography in focused ultrasound ablation surgery (FUAS) is limited (no hyperechoes in ∼50% of successful coagulation in uterine fibroids). A more accurate and sensitive approach is required.

Method: The echo amplitudes of the focused ultrasound (FUS) transducer in a testing mode (short pulse duration and low power) were found to correlate with the coagulation.

An and study on extracorporeal transducer optimization for high-intensity focused ultrasound to improve the safety and efficacy of breast tumor ablation.

Objective: To observe the characteristics of a new extracorporeal high intensity focused ultrasound transducer, titled Haifu system JCQ-B, and to compare its safety and efficacy for breast ablation with the standard Haifu system JC transducer.

Materials And Methods: Ox liver with pig skin and pork ribs were prepared in a semi-sphere shape, served as acoustic model. The udders of female goats were used as acoustic model.