The origin, pattern, caliber, projection on the body surface and anastomoses of the cutaneous arteries within the lateral thoracic flap have been studied in 33 cases (sides): adults- 30 cases, children- 3 cases. The chief results are as follows:1. Four types of cutaneous arterial supply within this flap be divided according to the number of branches: one branched type(51.51%?8.70), two branched type(27.27%?7.75), three branched type(15.15%?6.24), four branched type(6.06%?4.15).2. Lateral thoracic cutaneous arteries may arise from one to four of the brachial, lateral thoracic, axillary, dorsal thoracic, subscapular or thoraco-acromial arteries. The caliber of their origin varies between 1.23～1.75mm. The thoracoepigastric vein which drains blood into the lateral thoracic vein may be regarded as the main cutaneous vein in the flap area. The caliber of its end is 3.35?0.42 mm. This vein provided with valves.3. There are plenty of cutaneous arterial anastomoses within the lateral thoracic flap. In the radiograph the networks of blood vessels may be seen among the branches of the cutaneous arteries. These networks are distributed over the whole flap.4. The blood vessels of the lateral thoracic flap and its application have been discussed and the position of skin incisions and landmark of the cutaneous arteries been proposed in the article.

The relation between molar attrition and age was studied in 208 skulls Chinese male of cadavers from the Liaoning province. The ages of these cadavers range from 15 to 61 years. The total number of teeth studied are: 658 first molars and 601 second molars. The degree of attrition was divided into six grades. Results may be summarized as follows:1. The degree of molar attrition increases with age.2. The second molar is less attrited thanthe first one in the same jaw be'cause it crupts later, and the age ratio (in years) between M_1 and M_2 is about 6:7.3. The degree of molar attrition on both sides and both jaws is symmetrical in 63?1.9％, but no general rule can be found.4. A regressive equation of molar attrition has been obtained.

0.05).The accuracy of Borrmann type classification in 14 cases of advanced gastric carcinoma undergone gastrectomy was 92.8%.Conclusion The gastric carcinoma detection rate with NHSCT is similar to that with fibro-gastroscopic or double-contrast barium examination.The direct and indirect signs of gastric carcinoma can be found and the Borrmann type classification can be made by NHSCT.However,the non-contrast enhancement scanning is limited for the early gastric carcinoma detection,and can be improved by contrast enhancement scanning.

Objective To explore a new scanning technique to reduce and avoid image artifacts of thoracoabdominal CT and improve image quality for patients who cannot raise their arms. Methods Sixty-one patients with arm-raising disability between March 2004 and May 2009 were enrolled in the study. Thirty-one cases before June 2007 were scanned with their arms beside their body (control group), 30 cases after June 2007 were scanned with their arms shifting to different imaging planes of the spine(study group), and another 30 patients who can raising their arms were taken as routine group. The images artifacts were blindly evaluated by 5-points scale (severe, less severe, moderate, minimum and no artifact) by 2 experienced CT technologists and one radiologist and compared between the three groups (χ~2 test). CT values and its noise of the liver with or without artifact of the three groups were measured and analyzed by one-way ANOVA test. Results In the control group, 11 cases had severe, 15 cases had less severe, 5 cases had moderate. In the study group, 6 cases had moderate, 15 cases had minimum, 9 cases had no artifact. In the routine group, 8 cases minimum and 22 cases had no artifact. Image quality was significantly improved in the study group compared to the conventional group where χ~2 = 95.32 and P <0.01. CT value and the noise of the liver without artifact were (54.5±3.0) HU and 10. 7±2.4 in the control group, (52.0±3.5) HU and 10.7±0.5 in the study group, (53.7±3.1) HU and 9.9±0.5 in the routine group, respectively. CT value and noise of the liver with artifact were (41.7±8.4) HU and 17.9±2.6 in control group, (53.1±6.9) HU and 11.0±0.7 in the study group, (54.1±2.4) HU and 9.9±0.5 in the routine group, respectively. The CT value and its noise variation with artifact were significantly higher in the control group than the study group and the control group, where F = 36.352,235. 848, respectively and P <0.01. Conclusion The image quality can be improved and the artifact can be minimized for the patients with arm-raising disability by shifting their arm position to the different imaging planes of the spine.

Objective To investigate the differences in the epidemiological characteristics of patients in pre-hospital medical care before and after “5 · 12” Wenchuan earthhquake in Deyang city.Methods Comparison was made between the epidemiological features of cases treated in Deyang emergency medical center from the January 1,2007 through the December 31,2007 before the earthquake (the pre-earthquake group) and those treated from the January 1,2009 through the December 31,2009 after the earthquake ( the post-earthquake group) with the criteria of international classification of diseases (ICD-10).Results ( 1 ) There were 11 325 patients medically cared before earthquake and 16 265 patients after disaster.The distribution of sex,age,the top five causes,the seasonal and diurnal variations of emergency call,radius of service circle of pre-hospital medical care cases were no significantly different between the two groups ( P ＞ 0.05 ).( 2 ) The time required for scheduling ambulance and time consumed for the transportation of patients in the post-earthquake group were less than those in the pre-earthquake group ( P ＜ 0.05 ).Conclusions The efficiency of medical care done by 120 Emergency Command Center in Deyang city has been improved significantly in ease of without change in epidemiological features of patients after reconstruction of disaster area.

The cutaneous arteries of the forearm and their anastomoses in skin and subcutaneous tissue were invetigated on 35 upper limbs.1. The average length of the radial artery is 215.3 mm. This artery can be divided into a covered part and a exposed part. Their lengths are 117.7 mm. and 101.4 mm. respectively. The calibers of the upper end, the intermediate point, and the lower end of the radial artery are 2.7mm, 2.3 mm and 2.4 mm respectively.2. The exposed part of the radial artery sends out more cutaneous branches (9.6 branches) than the covered part (4.2 branches), While their muscular branches are nearly equal in number. The calibers of the cutaneous and muscular branches of the radial artery varies from 0.3～0.5 mm.The fine anastomoses of the cutaneous branches exist between the radial and ulnar arteries and between the radial and ulnar arteries and the dorsal interosseus artery and they form an arterial networks in the subcutaneous tissue of the whole forearm. For blood supply a skin flap may be cut from the whole forearm from the standpoint of morphology.4. The calibers of the radial and cephalic veins at the level of middle part of the forearm are 1.3 mm and 2.8 mm respectively. As the vasular pedicle both the veins should be anastomosed during transplant operation in order to increase the volume of the draining blood.5. The skin flap of forearm blongs to a type of blood supply of arterial trunk network, which have been distinguished with that of some other skin and myocutaneous flaps according to the anatomical characteristics of the radial artery.

OBJECTIVETo analyze the cause of atypical manifestation of hepatocellular carcinoma (HCC) in triple-phase spiral CT enhanced scan.

METHODSTriple-phase spiral CT scan was performed in 75 patients with HCC. The hepatic arterial phase (HAP), portal venous phase (PVP) and delayed phase (DP) images were started at 25 to 30 s, 65 to 70 s and 3 tp 5 min after injection of contrast medium. The contrast enhanced patterns of lesion were observed and analyzed.

RESULTSNinety-two lesions were found in 75 patients. Typical enhanced findings such as hyperdense in HAP and hypodense in PVP and DP was found in 60 of 92 lesions. Atypical enhanced findings were observed in the other 32 lesions. Fourteen of 32 atypical enhanced lesions were hyperdense in HAP and isodense in PVP, of which 8 were seen in liver cirrhosis and 3 in fatty liver. In DP, 10 were hypodense and 4 still isodense. Eight of the 32 lesions were hyperdense both in HAP and PVP, of which 6 were seen in fatty liver. In DP, 3 were isodense and 5 were hypodense. Six of 32 lesions were isodense in HAP which became hypodense in PVP and DP. Four of 32 lesions were all hypodense in HAP, PVP and DP.

CONCLUSIONMultiple atypical enhanced manifestations are present by triple-phase spiral CT scan in HCC. Pattern of blood supply, scanning technique and pathophysiologic status are usually the cause of these findings.

Adult ; Aged ; Carcinoma, Hepatocellular ; diagnostic imaging ; Contrast Media ; Humans ; Liver Neoplasms ; diagnostic imaging ; Male ; Middle Aged ; Tomography, X-Ray Computed

Objective:To explore the clinical application value of preoperative colonoscopic marking by Nd-Fe-B magnet ring to assist laparoscopy.Methods:A total of 51 patients with colorectal tumor who underwent radical laparoscopy from January 2020 to October 2021 at the Department of Gastrointestinal Surgery, Guizhou Provincial People's Hospital were recruited. The patients were marked by Nd-Fe-B magnet ring under endoscopy one day before the operation, another magnet ring was sent into the abdominal cavity during the radical laparoscopy through cannula. The two magnet rings were attracted and clung to each other to orient the lesions. The basic information of patients, location of preoperative marks under endoscopy and laparoscopy conditions were recorded.Results:All 51 Nd-Fe-B magnet rings were successfully located to the position of colorectal tumor and fixed. According to the location of the lesions, there were 15 cases of transverse colon, 12 cases of descending colon, 19 cases of sigmoid colon, and 5 cases of upper rectal segment. According to the lesion type, there were 21 cases of colon cancer, 25 cases of polyp carcinomatosis, and 5 cases of laterally spreading tumors with partial carcinomatosis. There were 5 cases with positive margins after endoscopic mucosal resection and 1 case with positive margin after endoscopic submucosal dissection. All lesions were accurately located during the operation. The marking time was 4.1±1.2 min (3-6 min) before the operation and the localization time was 1.5±1.1 min (0.9-5.3 min) during the operation. All magnet rings were removed from the body by laparoscope. The mean distances between the tumor and the cutting edge of the proximal and distal intestinal segments were 5.5 cm and 6.3 cm, respectively. No complications such as colon mucosal injury, bleeding, intestinal perforation or local inflammatory reactions occurred.Conclusion:Nd-Fe-B magnet ring tracer technique for laparoscopic orientation is simple, fast, accurate and safe with no need for additional equipment or apparatus, which is worthy of clinical application.