Corrigendum to “Neuroprotective effect of Sanqi Tongshuan Tablets on sequelae post-stroke in rats” Chinese Herbal Medicines 11 (2019) 45–51 (Chinese Herbal Medicines (2019) 11(1) (45–51), (S167463841830162X), (10.1016/j.chmed.2018.12.002)) / 中草药·英文版

When this paper was first published the following ethical statement was omitted in error: This study was approved by the Ethics Committee of AAALAC (NO. 001488) and carried out in strict accordance with the recommendations in the Guide for the Care and Use of Laboratory Animals of Tianjin Institute of Pharmaceutical Research. The authors would like to apologise for any inconvenience caused. DOI of original article: https://doi.org/10.1016/j.chmed.2018.12.002

Determination of total tritium in urine from residents living in the vicinity of nuclear power plants in Qinshan, China.

To estimate the tritium doses of the residents living in the vicinity of a nuclear power plant, urine samples of 34 adults were collected from residents living near the Qinshan nuclear power plant. The tritium-in-urine (HTO plus OBT) was measured by liquid scintillation counting. The doses of tritium-in-urine from participants living at 2, 10 and 22 km were in a range of 1.26-6.73 Bq/L, 1.31-3.09 Bq/L and 2.21-3.81 Bq/L, respectively, while the average activity concentrations of participants from the three groups were 3.53 ± 1.62, 2.09 ± 0.62 and 2.97 ± 0.78 Bq/L, respectively. The personal committed effective doses for males were 2.5 ± 1.7 nSv and for females they were 2.9 ± 1.3 nSv. These results indicate that tritium concentrations in urine samples from residents living at 2 km from a nuclear power plant are significantly higher than those at 10 km. It may be the downwind direction that caused a higher dose in participants living at 22 km. All the measured doses of tritium-in-urine are in a background level range.

Alterations in the cortical thickness and the amplitude of low-frequency fluctuation in patients with post-traumatic stress disorder.

The core neuropsychological processes underlying post-traumatic stress disorder (PTSD) have yet to be elucidated, and the association between anatomical and functional deficits in PTSD remains largely unknown. The aim of our study was to investigate the alterations in cortical thickness and amplitude of low-frequency fluctuation (ALFF) in PTSD patients resulting from motor vehicle accidents (MVCs), and to explore the association of cortical thickness and ALFF with the severity of PTSD symptoms. A total of 20 PTSD patients and 20 healthy controls were recruited and examined by high-resolution structural MRI combined with resting-state fMRI. The results showed significant decrease in cortical thickness in the left BA10, BA32 and BA45 and the right superior temporal gyrus in PTSD patients. The ALFF value in PTSD patients increased significantly in the left BA10 and BA32 and the right cerebellum. Linear regression revealed that decreased cortical thickness and increased ALFF in the BA10 were associated with the increased PTSD scores. These findings suggest that the structural integrity and resting-state function in the BA10 play an important role in the pathogenesis of PTSD.

Value of a virtual hepatic segment model in assisting in the ultrasonic localization of intrahepatic lesions / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>During scanning of the right hypochondrium and right intercostal regions with an ultrasonic transducer, several ultrasonic images of oblique sections are obtained. It is still a challenge for ultrasonography to divide these non-conventional sections into an accurate hepatic segmentation pattern. The aim of this research was to investigate the value of the virtual hepatic segment model (VHSM) in assisting the ultrasonic localization of space-occupying hepatic lesions.</p><p><b>METHODS</b>VHSM was constructed via 3D reconstruction according to the first Chinese visible human dataset. Preoperative ultrasonography, contrast-enhanced CT scan and VHSM techniques were performed in 100 patients with space-occupying focal lesions in the liver parenchyma for segmental localization. The results of these three techniques were compared with the operative findings.</p><p><b>RESULTS</b>VHSM was successfully detected on 2D sectional images by 3D reconstruction through surface rendering and volume rendering. The model could simulate ultrasonic directions to conduct a virtual dissection on any section plane, and fine liver segmentation could be displayed in any virtual plane. In 100 patients, there were 112 liver space-occupying focal lesions distributed in 148 liver segmentations. Regarding the positioning accuracies for lesions of different sizes and the lesion segmental distribution accuracies estimated using the three methods mentioned above, ultrasonography exhibited a significantly lower accuracy than VHSM for the segmental localization of lesions (P < 0.05), and contrast-enhanced CT was not significantly different from ultrasonography plus VHSM (P > 0.05).</p><p><b>CONCLUSION</b>VHSM increased the accuracy of ultrasonic localization of space-occupying hepatic lesions, particularly in hepatic hypovascular regions.</p>

Three-dimensional reconstruction of digitized human liver: based on Chinese Visible Human / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Comparing with two dimensional (2D) imaging, both in diagnosis and treatment, three dimensional (3D) imaging has many advantages in clinical medicine. 3D reconstruction makes the target easier to identify and reveals the volume and shape of the organ much better than 2D imaging. A 3D digitized visible model of the liver was built to provide anatomical structure for planing of hepatic operation and for realizing accurate simulation of the liver on the computer.</p><p><b>METHODS</b>Transverse sections of abdomen were chosen from the Chinese Visible Human dataset. And Amira software was selected to segment and reconstruct the structures of the liver. The liver was reconstructed in three-dimensions with both surface and volume rendering reconstruction.</p><p><b>RESULTS</b>Accurately segmented images of the main structures of the liver were completed. The reconstructed structures can be displayed singly, in small groups or as a whole and can be continuously rotated in 3D space at different velocities.</p><p><b>CONCLUSIONS</b>The reconstructed liver is realistic, which demonstrates the natural shape and exact position of liver structures. It provides an accurate model for the automated segmentation algorithmic study and a digitized anatomical mode of viewing the liver.</p>

Development and clinical application of 3D operative planning system of live in virtual reality environments / 中华外科杂志

<p><b>OBJECTIVE</b>To explore and develop three-dimension (3D) virtual reality (VR) liver model and convert computed tomography data into a fully 3D VR environment for display, measure and manipulation.</p><p><b>METHODS</b>3D-reconstruction of liver was restored from spiral computed tomography (CT) data by using LiVirtue software. Dextrobeam was used to view the 3D model in the VR environment. The liver and its anatomic structure were reconstructed to illuminate the location of the tumor and its related vessels.</p><p><b>RESULTS</b>3D models of liver, tumor and their relative vessels were reconstructed successfully. These models could be viewed and manipulated in the VR environment on personal computer.38 patients underwent liver resection, including 21 right hemihepatectomy, 14 left hemihepatectomy and 3 extended right hemihepatectomy. The intraoperative contrast with preoperative simulation confirmed the reliability of our 3D operative planning system.</p><p><b>CONCLUSIONS</b>The preoperative simulation in 3D VR facilitated liver resection by the ability to view tumor and its relative vessels. This preoperative estimation from 3D model of liver benefits a lot to complicated liver resection.</p>

Development of an electrolytically-detachable microcoil for intracranial aneurysms / 中国医疗器械杂志

An electrolytically-detachable microcoil is introduced here in the paper. The testing results indicate that, the microcoils have stable mechanical properties, clear radiographic images and fine insulation performance. Their detaching time varies from 30s to 200s when voltage changes from 2V to 5V.

Visualization of the adult penis and adjacent structure of the Chinese visible human / 中华整形外科杂志

<p><b>OBJECTIVE</b>To build digitized visible model of the adult penis and adjacent structure of the Chinese visible human, providing morphological data for plastic plerosis of external genitals diagnosis and the adult penis surgery planning.</p><p><b>METHODS</b>Cross-sectional images of fresh tissues from the Chinese visible human dataset and the visible penis and adjacent structure dataset were reviewed, the structures of the penis and adjacent structure were confirmed on a section-by-section basis. Three-dimensional computer reconstructions of the penis and adjacent structure were generated from these data by surface rendering.</p><p><b>RESULTS</b>The quality of the computerized 3D-reconstructed images was distinct and perfect. The adult penis and adjacent structure were all reconstructed and displayed jointly. All reconstructed structures can be represented individually or jointly. Any diameter and angle of the structures reconstructed could be measured conveniently.</p><p><b>CONCLUSIONS</b>The digitized model of the penis and adjacent structure offer unique insights into the complex penis anatomy, providing morphological data for plastic plerosis of external genitals diagnosis and surgery planning.</p>