Objectives: Peripheral arterial disease (PAD) leads to narrowing and hardening of arteries which leads to increased risk of lower extremity amputation. Hence, the accuracy of non-invasive diagnostic methods such as calcium scoring and color Doppler needs to be assessed in comparison to the gold standard dual-energy computed tomography (DECT) angiography. This study aims to evaluate the accuracy of color Doppler and calcium scoring when compared to DECT angiography in the assessment of PAD of the lower limb. It is a cross- sectional retrospective study. Material and Methods: The study included 55 patients aged between 40 and 70 years. All the patients with symptoms suggestive of PAD underwent color Doppler study of lower limb arterial system. Afterward, the patient underwent CT angiography. The first plain images were taken for calcium scoring following which contrast was given and further images were taken. Results: As compared to CT angiography assessment, Doppler assessment was 88.1% sensitive but only 69.2% specific with diagnostic accuracy of 83.6%. For angiographically detected atheromatous changes, color Doppler had sensitivity and specificity of 86.2% and 76.9%. The derived cutoff value >149.1 of calcium score in lower limb arteries was in 100% agreement with CT angiography detected PAD, whereas, for atheromatous changes, total calcium score at a cutoff value of >842.2 had sensitivity and specificity of 75.9% and 80.8%. Conclusion: Calcium scoring as compared to color Doppler has a higher diagnostic efficacy for the detection of DECT angiography confirmed PAD, whereas calcium score lacks adequate sensitivity at projected cutoff in the evaluation of atheromatous changes.

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Spindle Cell Carcinoma (SCC) of the lung is a rare entity. Computed Tomography (CT) and histopathology forms the basis of diagnosis. Here, authors presented a case of a 30-year-old male patient who reported with complaints of painless abdominal swelling associated with shortness of breath and fever. The patient underwent Contrast Enhanced CT (CECT) of chest, abdomen and pelvis with percutaneous CT guided biopsy. The final diagnosis was SCC of lung with transdiaphragmatic spread to abdomen. This case is clinically significant as it depicts unusual spread of SCC presenting as thoracoabdominal mass.

Introduction: Assessment of renal size is a difficult task in view of the complex shape of kidney. Among different imaging modalities Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) owing to their 3 Dimensional reconstructional ability are quite helpful in assessment of kidney size. A relationship between renal size and anthropometric parameters is an issue of interest. Aim: To assess kidney size in North Indian adult population using CT and to assess its relationship with age, sex and height. Materials and Methods: This was a cross-sectional study done over a period of two years (January 2018 to December 2019) in which a total of 300 adults aged between 20-90 years with normal renal function were enrolled. Age and sex of subjects was noted and their heights were measured. All the subjects underwent computed tomographic assessment for kidney size using 384 Slice Somatom Force, Seimens Corp. Multidetected CT machine. Contrast enhanced abdominal CT was performed to visualise the kidneys. Linear renal dimensions (length, lateral diameter, anteriorposterior diameter) were measured and renal volume was calculated using the ellipsoid volume formula. Data was analysed using Statistical Package for the Social Sciences (SPSS) version 21.0 software. Independent samples t-test, paired t-test, Analysis of Variance (ANOVA) and Pearson coefficient constants were calculated. Results: A total of 300 subjects were included, with the mean age of subjects were 41.12 years. Exactly half (50%) were males. Mean kidney size was 94.62 (95% CI: 90.27-98.97) cm3 for right side and 119.84 (95% CI=113.40-126.29) cm3 for left side. Average kidney size was 107.23 (95% CI=102.66-111.80) cm3. For both the sides, males had significantly larger kidney as compared to that of females (p-value <0.01). With increasing age, a significant decline in kidney size was observed (p-value <0.001). With increasing height, a significant increase in kidney size was observed (p-value <0.001). Height showed a significant positive correlation with both right and left side of kidney size (r=0.588, p-value <0.05). Conclusion: The present study provided the normal range for kidney size among North Indian adults using CT. The findings showed an age, gender and height dependence of kidney size in present study population.

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