An introduction to the application of CT diagnostic imaging in clinical medicine
CT diagnostic imaging refers to the scanning to obtain multi-level images and on this basis to make a diagnosis of the disease, then, CT diagnostic imaging in clinical medicine is?
[Abstract] Objective To explore the application value of CT imaging diagnosis in clinical medicine. Methods Retrospectively analyze the clinical data of 55 cases of colon cancer patients diagnosed and treated in this hospital in January 2015?January 2016, and control the results of preoperative CT examination, recurrent CT examination and pathological diagnosis. Results All 55 patients were confirmed by pathology, and the diagnostic accuracy of preoperative and postoperative recurrent CT imaging was 85.5% and 88.2%, respectively, and the difference was not statistically significant when compared with pathological diagnostic results (P>0.05). Conclusion The accuracy of CT imaging diagnosis is high, and the clinical application value is worthy of affirmation.
[Keywords] clinical medicine; CT examination; pathological diagnosis
Medical imaging includes X-ray, CT, MRI and other means of examination, along with the progress of medical imaging technology, clinical diagnosis and treatment of a variety of means of examination and treatment of the increasing dependence on the application of the different medical imaging technologies have their own characteristics, there are some differences in the application of CT imaging. As different medical imaging technologies have their own characteristics, there are certain differences in application, CT imaging is more widely used in clinical practice and is suitable for clinical diagnosis and condition assessment of a variety of diseases [1]. The clinical data of 55 cases of colon cancer patients treated in this hospital in January 2015 and January 2016 were retrospectively analyzed to explore the clinical application value of CT imaging, which is now reported as follows.
1 Data and Methods
1.1 General Data
55 cases of colon cancer patients diagnosed and treated in this hospital were conveniently selected as the study subjects, and their clinical data were retrospectively analyzed, with symptoms such as abdominal distension, abdominal pain, dyspepsia and other symptoms as the main complaints, among which there are 36 cases of males and 19 cases of females, with the age of 39-61 years old. The average age was (49.2?3.6) years old; the diagnosis was confirmed by CT and other examinations and pathologic diagnosis, which was in accordance with WHO diagnostic standards for colon cancer, and all of them received surgical treatment, among which 19 cases of sigmoid colon carcinoma (accounting for 34.5%), 16 cases of descending colon carcinoma (accounting for 29.1%), 13 cases of ascending colon carcinoma (accounting for 23.6%), and 7 cases of transverse colon carcinoma (accounting for 12.7%), and 7 cases of combined severe and chronic systemic diseases, neurological diseases, and other diseases. For patients with combination of severe chronic systemic diseases, neurological diseases and other tumor diseases, they were excluded.
1.2 CT diagnosis
CT examination and diagnosis, preoperative fasting, gastrointestinal cleansing, retention of enema, the use of drugs for pantethine glucosamine (approval number: H43021314), the initial use in the re-use of the dose of 900mL, respectively, 1,000mL; routine abdominal and enhancement of the scanning, take the supine position, the use of equipment for the 64-row helical CT scanner (Lightspeed CT scanner), the use of the CT scanner, the use of the CT scanner, the use of the CT scanner, the use of the CT scanner, the use of the CT scanner. Scanner (LightspeedVCT), the whole abdomen spiral volumetric scanning, appropriately expand the scope, layer thickness and time were 1.0cm, 6s or so; and then enhancement scanning, the contrast agent used was iodine seahydrol (approval number: National Pharmaceutical License No. H20083570) or iopamidol (approval number: National Pharmaceutical License No. H20153103), elbow vein quickly injected into the blood vessel, the rate of 4.0mL/s, after reaching the threshold, dynamic three-phase scanning, volumetric and multiplanar reconstruction were performed, and post-processing of the acquired images was performed to comprehensively analyze the vascular condition.
1.3 Evaluation criteria
After the operation, some lesion tissues of the patients were retained, and the pathological changes were viewed under the microscope, and the pathological analysis of the suspected recurrence was carried out, and the cancerous lesions and progression were evaluated according to the TNM staging criteria, and the T was used to denote the primary tumor, which was classified into the cases of unable to evaluate, no obvious evidence, carcinoma in situ, and the invasion of tumor into submucosal layer, intrinsic muscular layer, subplasmoid layer, and plasma membrane layer , which were denoted as Tx, T0, Tis, T1, T2, T3, and T4 in turn; N denotes lymph nodes, which were divided into the cases of unable to assess, no metastasis, and the presence of regional metastasis of 1~3,?4, which were denoted as Nx, N0, N1, and N2 in turn; and M denotes distant metastasis, which were divided into the cases of absent and present, which were denoted as M0 and M1, respectively [2]. The included patients were subjected to a 6-month follow-up observation, and the positive and negative preoperative CT diagnosis and postoperative recurrent CT examinations were recorded and analyzed against the results of pathological sections.
1.4 Statistical methods
The data were analyzed using the SPSS18.3 statistical software package, and the count data were expressed as rate (%), the ?2 test was performed, and the difference was considered statistically significant at P<0.05.
2 Results
Combined with the pathological diagnosis results, the accuracy of preoperative CT diagnosis was 85.5%, the difference was not statistically significant (P>0.05), see Table 1; the follow-up results showed that there were 17 cases of recurrence, and the CT was detected in 88.2% of cases, and the difference was not statistically significant (P>0.05),
3 Discussion
CT imaging diagnosis refers to the scanning to obtain multi-level images and on this basis to make a diagnosis of the disease, the examination technology is applicable to the diagnosis of a variety of diseases, has a high resolution, easy to operate, non-invasive and so on the advantages of CT scanning imaging for the three-dimensional image, but also for the differential diagnosis of disease to provide a reference basis. Combined with clinical medical practice, CT imaging diagnosis has high application value in the diagnosis of central nervous system diseases, vascular diseases, head and neck, chest diseases, etc. Taking chest diseases as an example, through enhanced scanning, mediastinum, hilar masses and lymph node enlargement can be clearly displayed, and it is also useful in the diagnosis of middle and late-stage cancers, metastasis, invasion and so on. Diagnosis as well as metastasis and invasion can be revealed through images, and the imaging effect of CT scanning on substantial organs is more ideal [3]. It is worth noting that the diagnosis of early cancer by CT imaging technology may have leakage and misdiagnosis, which needs to be combined with other imaging inspection means, and the value of joint application of multiple imaging technologies in clinical medical diagnosis is widely recognized. From the point of view of the clinical use of medical imaging, it is characterized by two major features: professional independence and complementarity, CT and other imaging technologies have their own systematic theoretical knowledge and operational skills, and at the same time, there is a close connection between each other, and the joint application can help to improve the level of imaging diagnosis, which is also an important guiding role for the expansion of the application of CT imaging technology [4]. In clinical diagnosis, CT and other imaging technologies for different diseases may have certain differences in the results, that is, each has its own advantages and limitations, any one imaging technology is not omnipotent, the selection of imaging technology should also take into account the applicability and economy, that is, we need to start from various aspects [5-6]. CT imaging technology also has certain shortcomings, in the routine examination, the cost is higher, the radiation of multiple examinations is greater, for some of the CT imaging technology to expand the application of [5-6]. The radiation of multiple examinations is larger, and for some special patients, such as pregnant women, the use of it should be considered as appropriate to avoid adverse reactions caused by abuse [7]. There are many research reports about the application effect of CT imaging diagnosis in clinical medicine. Song Ze [8] retrospectively analyzed the clinical data of 80 patients with acute pancreatitis, and the diagnostic accuracy of acute edema and hemorrhagic necrotic type was 97.5% against the diagnostic results of CT imaging and surgical pathological diagnosis, and the value of the application of CT imaging diagnosis in acute pancreatitis has been fully confirmed. Imaging technology plays an important role in the diagnosis and differential diagnosis of many diseases, and is more frequently used in the examination of some serious diseases. In this study, 55 cases of colon cancer patients who underwent surgical treatment were selected as the research subjects, and were examined by routine abdominal and enhancement scanning of CT imaging before surgery, and compared with the results of pathologic diagnosis, there were 27 cases of T staging, 19 cases of N staging, and 9 cases of M staging, and the diagnostic correct rate of preoperative CT examination totaled 85.5%. The total correct rate was 85.5%, which showed that CT imaging had a high accuracy in the preoperative diagnosis of cancerous lesions; the follow-up observation results showed that there were 17 cases of postoperative recurrence, and the total diagnostic correct rate of CT examination of different stages was 88.2%, which suggests that CT imaging can still obtain a high accuracy in the diagnosis of cancerous lesions recurrence after surgery. Compared with the above report, the accuracy rate of CT imaging technology in the diagnosis of preoperative and postoperative abdominal diseases in this study was relatively low, which was analyzed to be mainly affected by the similarity of multiple disease manifestations, but the overall diagnostic effect and its value in differential diagnosis are still worthy of affirmation. In summary, the widespread use of CT imaging technology is a major symbol of progress in clinical medicine, the means of examination can clearly and in detail reflect the lesions, can provide a reliable reference for clinical diagnosis and treatment, combined with the actual clinical situation, the application of CT imaging technology, can help to improve the level of medical diagnosis.
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