CT理论与应用研究

Plane Imaging prediction of Hydrocarbon distribution By Adopting the Non-linear Technique

Wang Honggang, Lü Bingquan, Zhao Yonghui, Sun Xiaogang

2001, 10(1): 1-4.

Abstract(1402) PDF(3)

Abstract:
The integration of Fractal process and artificial neural network analysis by adopting nonlinear techniques adds new power to the explanation of logging curves in geophysical exploration for hydrocarbon. In terms of the method, this paper attempts to make new explanation for logging data and to conduct a plane imaging prediction of hydrocarbon distribution.

A Signification of Sediment Grouping after TACE Intraarterial Infusion of Iodized Oil

Wang Hong-sheng, Wang Feng-yun

2001, 10(1): 5-7.

Abstract(2310) PDF(10)

Abstract:
Purpose: It has been reported that typing was chaotic after Intra-arterial Infusion of Iodized Oil, grouping is need scary to unification. Materials and Methods: On the basis of shape of sediment the patients after TACE were separated four group. A: Rare group. B: Full mass group. C: Gappy mass group. D: Clustered group. Previous studies have shown it is futile that sediment under 30% of area, do without typing again. Results: Full mass group produce a good curative effect. Gappy mass and clustered group take effect. Rare group is futile. Conclusion: It is concluded that sediment grouping in the shape was useful for evaluate the effect of TACE for HCC.

CT Diagnosis of Lymphangioma in Cervix

Wei Zhangting, Li Xinhua

2001, 10(1): 8-10.

Abstract(1478) PDF(1)

Abstract:
Objective :To study CT features of lymphangioma in cervix and to evaluate the diagnostic value of CT findings. Materials and Methods A retrospective and comparative of CT findings of pathologically proved lymphangiomas in cervix was conducted, and review some literatures and comparisons were made between these findings and operative and pathological results. Results: The most common CT appearance of lymphangioma in cervix was a smoothly marginate cystic mass, while its wall and septurn could be partially enhance; it growed along loose clearances and pressured around structure. Conclusion CT findings of lymphangioma in cervix depend mainly on theircontents, CT is the most useful imaging modality to locate and to determine the nature of the lymphangioma in cervix.

CT Diagnosis of Non-tumour Diseases in Spleen

Xu Chunlin, Liu Wei, Peng Lei, Zhang Wenhua

2001, 10(1): 11-14.

Abstract(1402) PDF(2)

Abstract:
Objective To study CT manifestations of in spleen and to evaluate CT in their diagnosis. Materials and Methods CT manifestations of non-tumour Diseases Were retrospectively analyzed in 582 pathologically proved cases and clinic or other imaging examine cases,which included congenital develop abnormity (n=26),big spleen (n=457),lienal tranma (n=87), lienal cyst (n=4),lienal abseess(n=2),lienal infarct (n=5), and lienal tuberculosis (n=1). Results Up to 99.6% of non-tumour diseases in spleen by find out. Each disease carried its own features on CT scans. Conclusion:CT is a preferred imaging examination for this disease. CT is very helpful for the diagnosis of non-tumour diseases in spleen.

CT Diagnosis and Clinical of Old People Matastatic Encephaloma

Yuan Lingjin, Sun Lixin, Han Xiaomian, Wang Huihui, Wang Li, Wang Changzhen, Song Lingling

2001, 10(1): 16-17.

Abstract(1554) PDF(1)

Abstract:
Purpose: We analysed the CT features of metastatic encephaloma through the contrast of clinic and operation pathology. The CT features and diagnosis senses of metastatic encephaloma of old people was investigated. Material and mothods. In those cases, multiple matastatic encephaloma were 39 cases, single matastatic tumor were 24 cases. All these cases were examed by CT. 49 cases were contrast scanned. We could see the tumour's locattion and quantity. Result: 118 tumors were found by CT. single matastatic encephaloma were 24 case (29.8%);two tumors were 58 cases (49%);more than two tumors were 26 cases(22%). Conclusion; CT scanning can define the location and quantity of the matastatic encephaloma. CT scanning is the first select in examing the matatatic encephaloma.

Picture Archiving And Communication System

Hu Weibiao

2001, 10(1): 18-20.

Abstract(1464) PDF(1)

Abstract:
This article described the development and character of Picture Archiving and Communication System.The present information of Digital Image Communication in Medical 3.0.The technology of the communication and archiving in PACS.It made the evaluation and prospect for profits of PACS.

CT Analysis of Radiation-induced Pulmonary Injury

Li Zhongxi, Xu Kai, Wang Xu, Zhang Longzhen

2001, 10(1): 21-24.

Abstract(1415) PDF(2)

Abstract:
Purpose:To Analysis the CT representations of radiation-induced pulmonary injury,evaluate its CT diagnosis value. Material and Method: The data of 160 patients with radiation induced pulmonary injury were collected, and reviewed to their CT findings, and compared CT features with X-ray's. Result: In 160 patients of first examination, and compared CT features with X-ray's. Result: In 160 patients of first examination, 66 patients represent acute radiation-induced pneumonia, 40 cases are in transition, stage, and 54 cases are in fibrosis stage. CT findings: radiation -induced pneumonia stage represents symmetrical high-density image or only pass-through grade light reduce in irradiation area, transition stage represents strip lard small patch image in irradiation area, and scar stage represents thick strip and patch image in the area, and bound shrink. The appearing time of acute radiation-induced pneumonia in CT is earlier than in plain film. And CT is even more easy and precision than plain film to show the focus in secrete part, distinguish apiece stage and differentiate pulmonary injury from original lesion(or recrudescence).Conclusion: CT can definitely show the radiological features and presumedly by-stages of radiation induced pulmonary injury, and has much higher sensitivity than plain film, and has preferable guidance and differentiation function in clinic.

Analysis on Transferring Tumor of Skull with High Resolution CT (HRCT)

Yang Chunming, Sun Ning, Zhao Jiade

2001, 10(1): 25-27.

Abstract(1311) PDF(1)

Abstract:
Objective: As to the transferring tumor of skull, analyze and discuss the relationship about its source, distributing part and oedema around it .Methods: Examine 93 focus of transferring tumor of skull, and scan parallel and increasingly to them. Divide the skull into 3 regions: Region 1 is the boundary of hemisphere skinniness and medulla; Region 2 is hemisphere; Region 3 is cerebellum and the brain stem. Four degrees of oedema: Degree 0 (not dropsy),Degree 1 (ETR<=1),Degree 2 (1=2).Results: transferring focus: 74 ones in Region 1; 14 in Region 2;5 ones in Region 3. Degree of oedema: 16 ones in Degree 0;15ones in Degree 1; 26 ones in Degree 2;36 ones in degree Conclusion: There is no relationship between oedema around transferring tumor and its source and vicious degree; Closely related to the transferring part.

CT Diagnosis of Cerebral Tuberous Sclerosis in Infants and Children

Bi Chunlong, Gao Liyuan, Wan Xia

2001, 10(1): 28-29.

Abstract(1597) PDF(3)

Abstract:
Objective:The Objective is to recognize the CT characteristic features of aural sclerosis in Infants and Children. Conciliation According to the classic CT appearance: multinodular around bilateral ventricles and they also have tendency to calcify, we can malice the diagnosis of tuberous sclerosis correctly.

Diagnosis of Neonate Hypoxic Ischemic Encephalopathy with X-ray Computerized Tomography

Gao Fakui

2001, 10(1): 30-32.

Abstract(1424) PDF(1)

Abstract:
Objective To study relationship of neonate asphxia and hypoxic ischemic encephalopathy (HIE) and classification method through B-mode ultrasonography. Methods There were 123 subjects observed for neonateasphxia with CT . We scanned acoustic window in the fontanel. Results There were 104 of HIE in all subjects (82%).twenty-one cases are middle, and ninteen are severe. Conclusion CT is highly sensitive for hypoxic-ischemic encephalopath sequela, and it is the most diagnosis tools of hypoxic-ischemic encephalopath sequela.

Direct Coronal Computed Tomographyof Atlas and Axis Spine

Li Ping, Jia Shaotian

2001, 10(1): 33-34.

Abstract(1416) PDF(1)

Abstract:
Purpose: To evaluate the usefulness of direct coronal CT technique in demonstrating upper cervical spine lesions and show the advantage superior to X-ray, conventional tomography, conventional CT and MRI examination. Materials and methods: Using Simens ARC CT machine and an removable head-supporting device and direct coronal CT technique. Results: Direct coronal CT provide superior demonstration of skeletal features of upper cervical spine and occipital bone with lower scanning numbers.It's a superior method which meet clinics by large matrix, excellent images and no reconstruction needed.Conclusion:Direct coronal CT is superior to conventional CT and can replace conventional tomography in accessing axis and atlas Spine. Orbital and lens radiation is negligible with direct coronal CT and conventional CT examination.

The Analysis of Ring Artifacts SOMATOM AR

Xu Weiqing

2001, 10(1): 36-40.

Abstract(1515) PDF(4)

Abstract:
The reason why ring artifacts appear in Somatom AR is analysed. The appearance of ring artifacts is related with working temperature and humidity. The hardware (includes Detector, hybrid and A/D inverter) multifunction is the main causes. The ring artifacts is also caused by position and angle's dis-adjustment between DAS, Tube and Collimator.

3D CT and Plastic Surgery Operating Navigation and Making Beauty Image

Guo Lucan, Gui Lai

2001, 10(1): 41-43.

Abstract(1408) PDF(2)

Abstract:
Successful execution of a surgical treatment necessitates knowledge of the relevant anatomy, physiology, and pathology, as well as the technical specifics of the operation. At this time, the Cranio-maxillo-facial 3D reconstruction can display bone change and relationship with adjacent structure, which is very useful for clinical assistance examination and more favorable and more accurate for establishing surgical operation planning. Since 1996, many people have undergone this technique at the Service of Plastic and Cranio-maxillo-facial surgery in Beijing. They adapted clinical results to four main indications: 1. Congenitally deformity; 2. Trauma or post-traumatic reconstructive Surgery; 3. Cranio-maxillo-facial tumors surgery and 4. Esthetic surgery. The indication of using the 3D EBCT reconstruction technique in surgery with these managments is discussed and some cases of clinic are demonstrated.

The Cross Well Electromagnetic Tomography Technique in Exploration of Corrode Cavity on pile pier Foundation

Guo Guian

2001, 10(1): 44-51.

Abstract(1379) PDF(1)

Abstract:
ZhaoQing Bridge, which is a main line connecting the ZhaoQing City and pearl Delta area, is situated on the Xi Jiang river catchment area in Guang Dong province. Their main pile piers are all situated on corroded limestone & marble cavity or above the rupture fragmentation. The one borel hole for one pile on every pier, a tradiational method for collecting geological data in Bridge foundation, is hardly possible to find out the cativities in corroded limestone and marble basic rock. The Cross Well Electromagnetic Tomography Technique is just possible for making up this shortage . We had used this technique in five main pile piers of ZhaoQing Bridge, by laying out crisscross prospecting profiles in each pile pier, constructing three dimension cavities distribution map in underground corroded limestone & marble rock through these crisscross profiles, figure out the cavities size & extension in difference direction .

NoticeMore>

linksMore>

2001 Vol. 10, No. 1