Search

Introduction: The correlation between hemoglobin and hematocrit with CT number superior sagittal sinus was investigated in this study. This issue can be used in the diagnosis of superior sagittal sinus thrombosis or anemia. Methods and Materials: The participants of this cross-sectional study were 100 patients referred to Beasat Hospital of Hamadan for head CT scan in 2021. The CT number of the superior sagittal sinus was measured from the CT images obtained with a 16 slice CT scanner. Hemoglobin and hematocrit levels were obtained from complete blood count (CBC) test. Data were analyzed using SPSS software and Pearson's correlation test was used to determine the relationship between CT number and hemoglobin or hematocrit. Independent t-test was used to compare the results. Results: The average age of the patients was 48.58 ± 20.68 years. The mean CT number of the superior sagittal sinus was 50.78 ± 5.94 HU in sequential mode and it was 50.53 ± 5.66 HU in spiral method (P=0.84). The average hemoglobin of the blood of the patients was 13.66 ± 2.07 g/dl and their hematocrit value was 42.47 ± 4.80%. There was not any significant correlation between the superior sagittal sinus CT number and the hemoglobin level (r=0.04, n=100 and p=0.637); however, there was a significant positive correlation between the superior sagittal sinus CT number and the hematocrit level in the sequential scan mode(r=0.39, n=100 and p<0.01). Discussion and Conclusion: It is not possible to obtain the blood hemoglobin level by measuring the CT number of the superior sagittal sinus; however, the hematocrit level can be estimated using the sequential scan mode. [ABSTRACT FROM AUTHOR]

Background: The current study aimed to determine the trends in esophageal cancer (EC) patients and examine the impact of the type and anatomical location of the tumor and the site of metastasis on their survival. Method: In this retrospective cohort study, we investigated 305 patients with a definite diagnoses of EC, who had been hospitalized at the Mahdie Hospital of Hamadan, Iran, during ten years from 2005-2015. EC-related survival considering different types and locations of the tumor, as well as the sites of metastasis, was evaluated. Survival was calculated using Kaplan-Meier curves and a multivariable Cox regression analysis (MVA) was performed. Results: Squamous cell carcinoma was found in 76.6% of the patients and 23.4% had adenocarcinoma (AC). There was a significant relationship between the location and pathological type of tumor; 87% of ACs happened in the lower part of the esophagus (P = 0.015). The 1- to 5-year relative survival of the patients was 46%, 25%, 22%, 12%, and 7%, respectively. The rate of death in liver, lung, brain, pancreas, abdomen, and lymph nodes metastasis were respectively 42.9%, 21.4%, 14.3%, 7.1%, 7.1%, and 7.1%. No significant relationships were observed between the tumor type and metastasis (P = 0.14) or between the tumor type and the location of metastasis (P = 0.7). Conclusion: Similar to other reports, the rate of survival was higher in AC type, yet the rate of total survival in Iran was much lower than that in developed countries. There were no differences in the survival rate concerning the location of the tumor. The obtained results did not show any relationships among the tumor type, the location of metastasis, and the total survival. [ABSTRACT FROM AUTHOR]

Background: Despite significant diagnosis benefits, the usage of ionizing radiation is not risk-free. The aim of this study was to determine the risk of thyroid cancer for children who exposed to brain computed tomography (CT) scan. Method: In this cross-sectional study, 90 patients under 20 years of age who underwent brain CT-scan were selected. Parameters such as age, sex, imaging technique, imaging characteristics, and thyroid absorbed dose were considered. We used SPSS software, version 21, at 95% confidence interval to analyze the absorbed dose and risk for each individual. Results: The mean and standard deviation of absorbed doses for girls and boys for the spiral technique were 3.954±0.393 and 4.72±0.000 mGy, and in sequential technique, were 2.282±0.461 and 1.985±0.431 mGy, respectively. The mean and standard deviation of the absorbed doses in <5 years age group were 5.65±2.00, 3.03±1.34 in 6 to 10 years, 2.63±0.98 in 11 to 15 years, and in 16 to 20 years were 2.57±1.04 mGy (P < 0.001). There was a significant negative correlation between the absorbed dose and field dimensions (r = -0.604, P < 0.001) and slice thickness (r = - 0.777, P < 0.001). The mean and standard deviation of Lifetime risk for thyroid cancer induction (x 105) in <5 years age group in spiral technique was 158.79±322.50 for female subjects and 16.5±42.90 for male patients, which was significantly more than those of other groups and techniques (P < 0.001). Conclusion: The rate of thyroid absorbed dose during brain CT-scan was found to be noticeable, especially in spiral CT imaging, for female patients < 5 years. Based on our results, it was associated with an increased risk of thyroid cancer in this age group. [ABSTRACT FROM AUTHOR]