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The chemical complexity of traditional Chinese medicines (TCMs) makes the active and functional annotation of natural compounds challenging. Herein, we developed the TCMs-Compounds Functional Annotation platform (TCMs-CFA) for large-scale predicting active compounds with potential mechanisms from TCM complex system, without isolating and activity testing every single compound one by one. The platform was established based on the integration of TCMs knowledge base, chemome profiling, and high-content imaging. It mainly included: (1) selection of herbal drugs of target based on TCMs knowledge base; (2) chemome profiling of TCMs extract library by LC‒MS; (3) cytological profiling of TCMs extract library by high-content cell-based imaging; (4) active compounds discovery by combining each mass signal and multi-parametric cell phenotypes; (5) construction of functional annotation map for predicting the potential mechanisms of lead compounds. In this stud TCMs with myocardial protection were applied as a case study, and validated for the feasibility and utility of the platform. Seven frequently used herbal drugs (Ginseng, etc.) were screened from 100,000 TCMs formulas for myocardial protection and subsequently prepared as a library of 700 extracts. By using TCMs-CFA platform, 81 lead compounds, including 10 novel bioactive ones, were quickly identified by correlating 8089 mass signals with 170,100 cytological parameters from an extract library. The TCMs-CFA platform described a new evidence-led tool for the rapid discovery process by data mining strategies, which is valuable for novel lead compounds from TCMs. All computations are done through Python and are publicly available on GitHub.
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Objective To study the imaging features and possible aetiology of osteonecrosis in adults with acute leukemia.Methods Ten adult patients with acute leukemia for osteonecrosis were reviewed retrospectively.All the lesions were confirmed with MRI.Results Four patients with ALL had accepted chemotherapy contained corticosteroids,two of them were performed HSCT,and one patient suffered GVHD.Six patients with AML had accepted chemotherapy without steroids,five of them were performed HSCT,and four patients suffered GVHD.One patient with AML-M3 had accepted chemotherapy including four courses of ATRA.The mean time between diagnosis of osteonecrosis and leukemia was 25.1 months.Nine cases had multiple lesions,one case had single lesion.The lesions involved femurs,tibias,patellas,iliums,and lumbars.Plain radiographs in six patients can not detect any lesion.Circinal reaction ossification could be detected in CT images of four cases.All the cases had typical feature in MRI.Conclusions In adult leukemia patients,osteonecrosis is a complication after chemotherapy or HSCT.Steroids in chemotherapy protocols or treatment for GVHD,ATRA for APML,chemotherapy-induced direct cytotoxic effect or leukemia itself can be the possible risk factor.For the diagnosis,MRI is the most effective way,and CT features of osteonecrosis in leukemia patients are different from those in non-leukemia patients.
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Objective To investigate the changes of quantitative parameters of dynamic enhanced CT in non-small cell lung cancer before and after targeted therapy,and compare them with the traditional evaluation criteria,in order to find the parameters which can be exploited for timely,objective evaluation of the effect of targeted therapy.Methods The study included 21 patients with targeted therapy who had received dynamic enhanced CT before and after treatment.Enhancement time-density curves were obtained based on the CT values of the lesion at individual time points,and the functional indices:peak height (PH),the time to peak height (Tp),the ratio of PH of the mass to aorta (M/A) and perfusion value were calculated.The effects of the treatment on these indices were evaluated and compared with the effect of the treatment on lesion diameter. Results Twenty-one patients had 33 rechecking results. There was a statistically significant agreement between lesion diameter-based treatment evaluation and perfusion-based treatment evaluation ( U =8.761,P ＜ 0.01 ). The perfusion value decreased in patients with disease regression[before treatment:(0.28 ±0.11 ) ml · min-1 · ml-1,after targeted therapy(0.18 ±0.09) ml ·min-1 · ml-1,t =- 3.2722,P =0.0042],but increased in patients with disease progression[before treatment(0.21 ±0.08) ml · min-1 · ml-1,after targeted therapy:(0.34 ±0.11 ) ml · min-1 · ml-1,t =2.6064,P =0.0403].Conclusions On dynamic enhanced CT in non-small cell lung cancer patients after targeted therapy,perfusion value changed in the same trend as the diameter of tumor.The effectiveness of targeted therapy may be evaluated by perfusion value changes.
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Objective To investigate the spiral CT findings in hemopathic patients with druginduced pulmonary injury.Methods CT images obtained in 11patients with drug-induced pulmonary injury were retrospectively analyzed.Six patients had antineoplastic agent-induced pulmonary injury and 5 patients had non-neoplastic agent-induced pulmonary injury (immunosuppressor in 2 patients,antifungal in 2 patients,antineoplastic immunomodulators in 1 patient).CT findings were reviewed by a chest radiologist.Results All 11patients had parenchymal abnormalities on MSCT scans,including ground-glass opacities( n =8 ),consolidation( n =5 ),interlobular septal thickening( n =3 ) and focal fibrosis ( n =2 ).The abnormalities were bilateral and asymmetric in all patients.They were mainly in the peripheral lung regions in 6 patients,in the central lung regions in four,and irregularly located in one.The abnormalities involved mainly the lower lung zones in six patients,the upper lung zones in two,and all lung zones homogeneously in three.One patient had fluid in bilateral pleural cavities.Three patients were given the same agent once more after the imaging turned to normal,and they presented with same clinical symptoms and similar but more serious imaging findings.Conclusions Drug-induced pulmonary injury usually manifests as areas of ground-glass opacity and consolidation,which most commonly involves the peripheral lungs and lower lung zones.Drug-induced pulmonary injury shows reproducible but more serious lesions when the patient is given the same agent once more.
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Objective To analyze the characteristics of breast cancer blood supply before and after chemotherapy with low-dose CT perfnsion. Methods Fifteen patients with breast cancer underwent CT breast perfusion examination, which was performed before and after chemotherapy within 1 week on Siemens Sensation 4 scanner with 120 kV and 50 mAs, 50 ml of nonionic contrast agent (320 mg I/ml) was injected at a flow rate of 4 ml/s with a power injector, Scan started after 8 seconds delay and data acquisition duration was 50 seconds. The blood flow ( BF), blood volume (BV) and mean transfer time (MTT) of lesion and contralateral normal breast gland were calculated using Basama perfusion 3 software package before and after chemotherapy. At the same time, the tumor size before and after chemotherapy were measured and correlated with the BF values. The t test and non-parametric test were used for the statistics. Results ( 1 ) The mean BF、BV and MTT of breast cancer were (33.20±4. 17) ml · min-1 · 100 ml-1 , (8. 31±2.43) ml · 100 ml-1 and ( 15. 31 ± 4. 31 ) s respectively before chemotherapy, and ( 13.65 ± 6. 04) ml · min-1 100 ml-1, (5.04±2. 33) ml · 100 ml-1 and (25. 97±9. 07) s respectively after chemotherapy and there were statistically significant (P =0. 000). The mean BF、BV and MTT of normal breast were (4. 31 ± 2.23) ml · min-1 · 100 ml-1, (1.38±0.75) ml · 100 ml-1 and (19.25±3.94) s respectively before chemotherapy, and (4.03±2.35) ml · min-1 · 100 ml-1、(1.44±0.84) ml · 100 ml-1、(22.56 ± 7.71 ) s respectively after chemotherapy and there were not statistically significant (P >0. 05). (2)The BF of breast cancer was higher than the normal breast before chemotherapy ( P < 0. 01 ). (3) There was a positive correlation between the BF values and tumor size before and after chemotherapy ( r = 0. 902, P = 0. 000). Conclusion The BF value has a positive correlation with tumor size after chemotherapy, CT perfusion is more sensitive for the evaluation of chemotherapy response than morphologic assessment.
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Objective To discuss the application of spiral computed tomography and reconstruction technology for patients of depressed nasal bone. Methods The patients of transsection location were backlying on the scan bed and continuously scanning in spiral, and baseline was acou-infraorbital line. The reconstructed image with 2mm layer thickness and 1.5mm overlap can be selected SSD liminal value as bone -wide and surface threshold. Results SSD image can be clearly demonstrated than general nasal bone cross-section profile in the shape, location, size and suitability of filled composite. Conclusion The surface shadow display can be shown nasal bone structure realistically, the three-dimensional anatomic structure images of vessels and the effect of bionics. The bone of volume, distance and angle can be measured exactly by clinical physician, and made the best treatment plan based on the images.
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Objective To analyze the imaging characteristics of thoracic LDRD(Low-dose directly Digital Radiographic Device) and its artifacts.Methods 188 patients were performed with LDRD and common thoracic X-ray film respectively in our hospital during two weeks.Results Among the 188 cases,1.60%(3/188) showed thoracic motion artifacts.46.8%(88/188) appeared as tentorial prominence along left heart edge and 2.6%(5/188) along the right one.1 artifact was in aorta-pulmonary artery window(0.53%).Conclusion(1)Less than 0.5 should be taken as reference in podoid enlargement diagnosis.(2)Pseudomorph from heart motion may result from cardio-phase,cardiac contraction,heart rate,arrhythmia,local abnormal pulse of left heart edge,different enlarged velocity of cardiac cavity during heart beat,etc.(3)The motion artifacts in thoracic LDRD has no important influence in clinical diagnosis and therapy.