Spiral CT In Diagnosis Research Articles

Application of Endoscopic Ultrasound Combined with Multislice Spiral CT in Diagnosis and Treatment of Patients with Gastrointestinal Eminence Lesions.

Objective To evaluate the application of endoscopic ultrasound (EUS) combined with multislice spiral CT (MSCT) in the diagnosis and treatment of patients with gastric eminence lesions. Methods A total of 160 patients with gastric eminence lesions enrolled in our hospital from June 2018 to June 2021 were included and received EUS and MSCT. The results of the two examinations and the postoperative pathological results were compared. Results The common pathological types of gastric eminence lesions include polyps and stromal tumors, with the most common sites of lesions in the gastric antrum, followed by the fundus of the stomach and the gastric body. Gastric eminence lesions mostly originate from the mucosal layer and muscularis mucosa, accounting for 83.13% of the total. With pathological results as the gold standard, the detection rate of MSCT was 90.63%, and that of EUS was 78.13%. With the joint diagnosis as a reference, the receiver operating curve (ROC) revealed a higher diagnostic efficiency of MSCT and EUS. Conclusion The accuracy of MSCT in the diagnosis of gastric eminence lesions is significantly higher than that of EUS, both of which can offer useful guidance for the choice of endoscopic treatment methods. The combination of MSCT and EUS examination before endoscopic gastroscopy may provide a better treatment efficacy on gastric protruding lesions with high safety.

Clinical Value of Multi-slice Spiral CT in Diagnosis of Multiple Foot Fractures

Clinical Value of Multi-slice Spiral CT in Diagnosis of Multiple Foot Fractures

Clinical Value of Multi-slice Spiral CT in Diagnosis of Preoperative and Postoperative Recurrent Colon Cancer

Clinical Value of Multi-slice Spiral CT in Diagnosis of Preoperative and Postoperative Recurrent Colon Cancer

Brief Analysis of Application Value of Nuclear Magnetic Resonance and Spiral CT in Diagnosis of Spinal Trauma

Brief Analysis of Application Value of Nuclear Magnetic Resonance and Spiral CT in Diagnosis of Spinal Trauma

Analysis of Clinical Application Value of Multi-slice Spiral CT in Diagnosis of Acute Thoracic and Abdominal Trauma

Analysis of Clinical Application Value of Multi-slice Spiral CT in Diagnosis of Acute Thoracic and Abdominal Trauma

Study on the sensitivity of multi-slice spiral CT in diagnosis of lymph node metastasis in different lymph node stations of gastric cancer

Objective: To study the sensitivity of multi-slice spiral CT in the diagnosis of lymph node metastasis in different lymph node stations of gastric cancer. Methods: A retrospective series of case study was employed in the research. Inclusion criteria: (1) patients undergoing preoperative abdominal CT scan plus enhanced examination, and data in the image archiving and communication system of Sun Yat-sen University Cancer Center; (2) patients undergoing total or subtotal gastrectomy plus D2 or D1+ lymphadenectomy, with more than 15 harvested lymph nodes and more than 1 metastatic lymph node confirmed by postoperative pathology; (3) WHO pathological classification defined as gastric adenocarcinoma; (4) no history of lymph node tuberculosis, giant lymph node hyperplasia, lymphoma or other diseases resulting in enlarged lymph nodes; (5) no history of gastrectomy; (6) no preoperative neoadjuvant therapy. Clinicopathologic data of gastric cancer patients at the Department of Gastric and Pancreatic Surgery, Sun Yat-sen University Cancer Center from January 2009 to December 2012 were retrospectively analyzed. Using the pathologically positive lymph nodes as a reference, the sensitivity of CT-positive lymph nodes was calculated (total number of positive image lymph nodes/total number of positive pathological lymph nodes) and complete coincidence rate (number of case defined as complete coincidence/number of case with positive pathologic lymph nodes; complete coincidence indicated that the number of positive image lymph nodes was consistent with the number of positive pathologic lymph nodes in each lymph node station). The χ(2) test was used to compare the sensitivity of CT in the diagnosis of lymph node metastasis in each lymph node station. Results: A total of 228 patients with pathology-proven gastric cancer were enrolled in the study, including 147 male and 81 female. The overall sensitivity of CT in diagnosis of metastatic lymph nodes in gastric cancer was 68.7% (1769/2576). The sensitivity of CT in diagnosis of lymph node metastasis of groups 1 to 8 from high to low was group 3 [81.1% (506/624)], group 7 [73.9% (246/333)], group 2 [70.3% (111/158)], group 6 [68.7% (248/361)], group 4 [68.1% (262/385)], group 8 [60.4% (116/192)], group 1 [53.8% (155/288)], group 5 [47.1% (82/174)]. The CT diagnostic sensitivity of group 3 was significantly higher than the overall level (χ(2)=37.689, P<0.001). The CT diagnostic sensitivity of group 5 was significantly lower than the overall level (χ(2)=34.387, P<0.001). The CT diagnostic sensitivity of group 1 was also significantly lower than the overall level (χ(2)=25.918, P<0.001). Significant differences were not found in the CT diagnostic sensitivity of group 2, 4, 6, 7, 8 compared with the overall level (all P>0.05). The complete coincidence rate was 56.9% (536/942) between pathological positive lymph nodes and CT positive lymph nodes. The highest complete coincidence rate was observed in group 3 (68.0%, 123/181) and the lowest was in group 1 (41.4%, 46/111), whose difference was statistically significant (χ(2)=9.673, P=0.002). Conclusion: The sensitivity of CT in diagnosis of lymph nodes in different lymph node stations of gastric cancer is different.

Application of multi-slice spiral CT in diagnosis of inferior vena cava lesions in Budd-Chiari syndrome and its clinical value

Objective To study the application of multiple row spiral CT (MSCT) in the diagnosis of inferior vena cava lesions in Budd Chiari syndrome (BCS) and its clinical value. Methods Eighty patients with BCS admitted to the Central Hospital of Shan County from May 2017 to May 2018 were divided into two groups by digital grouping method, with 40 cases in each group.The control group was diagnosed by ultrasound, and the study group was diagnosed by multi-slice CT.The pathological changes, tissue contrast of inferior vena cava and hepatic vein and the diagnostic sensitivity, specificity, positive predictive value and negative predictive value of inferior vena cava obstruction were compared between the two groups. Results The pathological diagnosis rate in the study group was significantly higher than that in the control group(χ2=4.562, 4.695, 4.125, 5.124, all P<0.05). The contrast of inferior vena cava and hepatic vein tissues in the study group was significantly higher than that in the control group (t=12.897, 13.214, all P<0.05). The sensitivity, specificity, positive predictive value and negative predictive value of the diagnosis of inferior vena cava occlusion in the study group were higher than those in the control group (the control group: 91.2%, 98.6%, 97.3%, 80.3%, the study group: 100.0%, 99.5%, 98.2%, 100.0%, χ2=11.897, 10.214, 11.235, 13.564, all P<0.05). Conclusion The application of MSCT in the diagnosis of BCS-inferior vena cava lesions, can display the lesions comprehensively and intuitive guidance in the treatment of inferior vena cava lesions, has high diagnostic value, it is worthy of popularization and application in clinic. Key words: Tomography, spiral computed; Budd-Chiari syndrome; Vena cava, inferior; Diagnosis; Ultrasonography; Sensitivity and specificity

Evaluation of spiral CT in the diagnosis of splenic tuberculosis

Objective To investigate whether spiral CT is helpful for the diagnosis of splenic tuberculosis. Methods During the recent six years in our hospital, forty splenic tuberculosis patients diagnosed by spiral CT were enrolled in this study.Combined with pathological biopsy and clinical diagnosis and treatment, the accuracy and clinical effect of spiral CT in diagnosis of splenic tuberculosis were comprehensively analyzed. Results 40 patients received CT test were diagnosed as splenic tuberculosis, and 35 patients with biopsy and clinical diagnosis was consistent with the final diagnosis, with the correct rate of diagnosis 87.5%; Type spiral CT accuracy rate and patients with history of tuberculosis and lesion had obvious correlation (χ2=15.873, 23.804, all P 0.05); 35 cases of splenic tuberculosis patients with CT diagnosed showed multiple or diffuse nodular lesions, and the lesion size was about tuberculosis 5~45 mm.The boundary was not clear, which was characterized by low density and had no obvious enhancement. Conclusion Spiral CT is beneficial for the diagnosis of splenic tuberculosis with important clinical value. Key words: Multi-spiral CT; Splenic tuberculosis; Value; Biopsy; Accuracy

The clinical value of spiral CT in diagnosis of acute early gastrointestinal perforation

Objective To explore the clinical value of spiral CT in diagnosis of acute early gastrointestinal perforation.Methods The clinical data of 38 patients who were definitely diagnosed by pathology as acute early gastrointestinal perforation were retrospectively analyzed.All the patients received spiral CT and abdominal X-ray before surgery.The diagnosis and imaging finding of two methods were analyzed.Results The accuracy of spiral CT (89.5％) was significantly higher than that of X-ray(63.2％) (x2 =7.28,P ＜0.01).X-ray did poorly at displaying free gas at small amount and structures which was not subdiaphragmatic air but retroperitoneum or less omental,but spiral CT did good at that obviously so as to make accurate location and etiological diagnosis.Conclusion Spiral CT can display a small amount of abdominal free air earlier and more accurately,with a high accuracy of diagnosis at early gastrointestinal perforation,and can provide valuable information for location and etiological diagnosis. Key words: Gastrointestinal perforation; Free air; Body section radiography; X-ray computer

Clinical value of spiral CT in diagnosis of small bowel tumors

Objective To explore the clinical vaue of multilayer spiral CT in diagnosis of small intestinal tumor.Methods 36 cases with small intestinal tumor were selected as the research objects,the multi-slice spiral CT imaging results were analyzed retrospectively.Results Sensitivity of multi-slice spiral CT was 94.4％,accuracy of 88.9％.Conclusion Spiral CT is a safe,simple,non-invasive,effective method in diagnosis of small bowel tumors,it has high detection rate. Key words: Tomography,X-ray computed; Ileal neoplasms; Jejunal neoplasms; Diagnosis

Spiral CT in diagnosis and treatment of femoral neck fractures

ObjectiveTo investigate the value of spiral CT in diagnosis and treatment of femoral neck fractures.MethodsFrom December 2008 to February 2010, 192 cases of femoral neck fractures were examined first by X-ray and next by spiral CT scanning plus three-dimensional reconstruction. They were 90 men and 102 women, aged from 18 to 89 years (average, 71.2 years) . The differences of the 2 examinations were compared.ResultsThe diagnostic rate of X-ray was 95.8％(184/192), significantly lower than that of spiral CT [100％ ( 192 / 192 )] (x2 =6. 255, P =0. 012). Four fractures were shown as incomplete on X-ray films, but demonstrated as complete on CT images. Spiral CT three-dimensional reconstruction demonstrated rotated displacement and rotation direction of the femoral head in 75 cases while X-ray only showed rotated displacement in 10 cases without demonstration of the rotation direction. Bone chips in 47. 9％(92/192) of the patients were demonstrated by spiral CT, significantly higher than those by X-ray [12.5％ (24/192)] (x2=57. 116, P=0. 000) . Correct fracture typing by X-ray was 73.4％ (58/79),significantly lower than that by spiral CT 100％ (79/79)(x2 =24. 219, P =0. 000). According to Spiral CT results, treatment protocols were adjusted for 31 patients.ConclusionIn diagnosis and treatment of femoral neck fractures, spiral CT is more valuable than X-ray because it can demonstrate three-dimensional details of a specific fracture. Key words: Femoral neck fractures; Tomography, spiral computed; Diagnosis; Therapy

Spiral CT in Diagnosis of 4-Rooted Maxillary Second Molars Bilaterally: A Case Report

ABSTRACT Variations in the root canal morphology are common and permanent maxillary molars are no exceptions. Permanent maxillary molars generally have three roots one palatal and two buccal. The incidence of a second palatal root is quite rare. This paper highlights the endodontic diagnosis and treatment of a permanent maxillary second molar having an additional palatal root using specialized diagnostic technique-spiral computed tomography.

Role of multislice spiral CT in diagnosis of biliary complications after liver transplantation

Objective To analyze the role of multislice spiral CT in the diagnosis of biliary com-plications following liver transplantation. Methods Forty-four patients with biliary complications re-ceived tri-phase contrast-enhancement CT examination and cholangiography (CP) within one week af-ter the CT scanning. Using the results of CP as the standard, we investigated the efficacy of multislice spiral CT for each kind of biliary complication. All the analyses for bile duct were based on the images on the late portal venous phase and the reconstruction of images performed with multiplan reformat,Results CP depicted biliary strictures involved in extrahepatic bile duct in 23 cases (including the common bile duct and common hepatic duct), left or right hepatic duct in 24 and intrahepatic bile duct in 27. The sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of the CT examination were 91.3%, 83. 3% , 87. 8%, 87. 5% and 88. 2% for biliary stricture in extrahe-patic bile duct, 83. 3% , 88. 2%, 85. 4%, 90. 9% and 78. 9% for biliary stricture in left or right he-patic duct, 74.1%, 92.7%, 80.5%, 95.2% and 65.0%, for biliary stricture in intrahepatic bile duct, respectively. CT detected intrahepatic biloma in 4 cases and abscess in 2 but CP only detected biloma in 2 cases. The other 4 cases did not detected by CP because of severe biliary strictures which filled with biliary sludge. CP confirmed anastomotic bile leak in 3 cases. In these cases, CT only de-picted the fluid collection in hepatic hilum and abdominal cavity, none of the exact leak site could be detected. CP detected biliary sludge or stones in 33 cases. However, the sensitivity, specificity, accu-racy, positive predictive value and negative predictive value of the CT examination for biliary sludge or stones were 72.7%,100.0%,78.1%,100.0%and 47.6%,respectively.Meanwhile,in 1 patient with diffuse intrahepatic biliary strictures,active biliary bleeding was correctly detected by CT exami-nation and confirmed by hepatic arteriography.Conclusion Tri-phase contrast-enhancement CT exam-ination can be used as a general method for biliary complications after liver transplantation.Besides its benefits in biliary complications,it is of great value for depicting complications involved in hepatic pa-renchyma and acute biliary bleeding in the same examination. Key words: Liver transplantation; Biliary complication; Tomography; X-ray computed; Cholangiography

Clinical application of volume rendering of portal-vena cava area by 16-slice spiral CT for diagnosis and evaluation of hepatocellular carcinoma

原发性肝癌(primary hepatocellular carcinoma,HCC)容易发生门腔区(porta caval region,PCR)转移,其病理改变为肝胆外科术前重点关注的内容之一.笔者探讨16层螺旋CT门腔区容积成像(volume rendering,VR)在原发性肝癌诊断中的应用及评价。

Value of multi-slice spiral CT in diagnosis the detection of fish bone impaction in the esophagus

Objective To investigate the detection rate and diagnostic value of multi-slice spiral CT scan in detecting fish bone impaction in the esophagus.Methods Experimental group: 30 fresh water fish bones from three variety classes were divided into three groups with length of(23.36±0.15), (28.51±0.07) and (30.89±0.10) mm, and diameter of (4.49±0.31), (1.78±0.09) and (0.49±0.07) mm.The fish bones were put into esophagus models in three different types including parallel, perpendicular and oblique.MSCT with axial scan combined with three dimensional reconstruction technique and plain X-ray film (CR and DR) were used to examine the model.The relations of the number and rate of fish bones were compared between MSCT and X-ray film.Clinical group: MSCT imaging were performed in 20 cases proved by esophageal endoscope or clinical operation, among which 11 cases received plain X-ray film (CR and DR), 15 cases received Barium-soaked cotton and 17 cases received endoscope.Paired Chi-square test was used to compare the differences of detection of fishbone by the different ways.Results In experimental group: All the 90 cases(100%) fish bones of three different species were clearly revealed on MSCT image; only 60 cases(66.7%) fish bones were revealed by plain X-ray film(CR and DR).The number and rate of fish bones detected by MSCT was higher than that of plain X-ray film (CR and DR) (X2=28.03, P < 0.01).In clinical group: 20 cases were made right diagnosis by MSCT, and the location and size of fish bone in the esophagus, the surrounding and complications of esophagus could be clearly demonstrated on MSCT image.Two cases detected by plain X-ray film(CR and DR) ;9 cases detected by Barium-soaked cotton;14 cases detected by endoscopy.The number and rate of fish bones detected by MSCT was higher than that of plain Xray film (CR and DR) (X2=7.11, P < 0.05) and Barium-soaked cotton (X2=4.17, P < 0.05).Conclusions The sensitivity and detection rate of fish bone with MSCT was high and could evaluate the surrounding and complications of the esophagus.MSCT could be used as the first examination of impacted fish bones in the esophagus. Key words: Esophagus; Foreign bodies; Tomography, X-ray computed

Spiral CT in diagnosis and treatment of complex fractures around the elbow

Objective To evaluate spiral CT in diagnosis and treatment of complex elbow fractures. Methods From January 2005 to May 2007, 32 cases of displaced elbow fracture were checked with X-ray, CT scanning and spiral CT to determine their fracture type, according to which the best surgical approach and appropriate treatment protocols were chosen. Their elbow functions were observed after opera-tion. Results The fracture type was determined by X-ray examination in 17 cases, by CT scanning in 30 cases, but by spiral CT in all patients. Individualized treatments were adopted according to the specific fracture type diagnosed. Patients were followed up for 6 to 24 (mean, 15) months. After operation the rangeo f motion of the elbow improved. Flexion averaged 125°, extension margin averaged 24.5°, pronation averaged 80°, and forearm supination averaged 75°. X-ray inspection indicated fracture healing, no myositis ossifieans, no wound infection, no postoperative joint instability, no obvious pain or other complications. By Mayo elbow functional criteria, 21 patients scored excellent, 7 good, and 4 fair. Conclusion Spiral CT can clearly show three-dimensional details of a complex fracture of the elbow so that it helps surgeons determine fracture type and choose an appropriate treatment protocol on the basis of accurate knowledge of the complexity of the elbow fracture. Key words: Elbow joint; Fractures; Diagnosis; Treatment; Spiral CT

Clinical value of 16-slice spiral CT in diagnosis of colorectal carcinoma

Objective To explore the clinical value of 16-slice spiral CT and its post-processing technics in diagnosis of colorectal carcinoma.Methods CT characteristics,surgery and pathological data of forty-three patients with colorectal carcinoma were analyzed retrospectively.Results The accurate diagnosis rate using 16-slice spiral CT was 100%,a total of forty-five focus were observed by CT and its post-processing pictures.It is safe to detect colorectal carcinoma using spiral CT without wounds.Further more,tumors and its growth towards enteric cavity,wall thichness,damaged surroundding tissues were all observed clearly as well as metastasize.Conclusion 16-slice spiral CT and its post-processing technics is effective in diagnosis of colorectal carcinoma,which should be used in clinical experiences. Key words: Colorectal neoplasms; Tomography,X-ray computed; Diagnosis

The value of spiral CT in diagnosis of intestine entocele

Objective To elevate the usefulness of spiral CT in diagnosis of intestinal entocele. Methods The CT findings of 11 cases of intestinal entocele proved by operation were reviewed.The main reconstruction techniques were MPR(multiple plane reconstruction)and STS-MIP(slip thin slab maximal intensity projection).Results Eleven cases of intestinal entoceles were all diagnosed accurately before operation.The main sign were left paraduodenal hernia,demonstrated as a saclike mass between stomach and pancreas,clustering,displacing or crowding and elongating of small-bowel loops,engorgement and crowding of the mesenteric vessels with frequent right displacement of the main mesenteric trunk,other bowel displacing.Orificium hernialis were seen with bowel obstruction.When intestinal entocele accompanying torsion,whirlpoolof intestine and mesentery vessels were seen.Conclusion Spiral CT and MPR,STS- MIP techniques have important clinical value to diagnose the intestinal torsion.

Application of three-dimensional reconstruction technique of 16 slice spiral CT in diagnosis of mechanical intestinal obstruction

目的 探讨16层螺旋CT三维重建对机械性肠梗阻的诊断价值.方法 回顾性分析38例经手术证实为机械性肠梗阻,且X线和16层螺旋CT检查资料齐全的病例,把X线、二维CT及三维CT所见与手术病理结果对照并进行对比分析.结果 三维CT诊断肠梗阻的准确率为100%,病因诊断正确率92%(35/38),包括肠肿瘤16例,肠粘连6例,肠套叠5例,肠扭转2例,腹外疝3例和肠石3例.结论 16层螺旋CT三维重建对机械性肠梗阻的显示、诊断及制定治疗方案具有重要的临床意义。

Spiral CT in diagnosis of pneumoconiosis pulmonary heart disease in coal workers

Spiral CT in diagnosis of pneumoconiosis pulmonary heart disease in coal workers