双源CT双能量在肾脏占位性病变检查中的应用研究
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摘要
目的探讨肾脏占位性病变行双源CT虚拟平扫检查的临床应用价值。方法采用回顾性研究对192例肾脏占位性病变患者行常规平扫与虚拟平扫。以liver VNC软件获取图像,由2名医师评价图像,测查两组肾癌、肾囊肿及错构瘤的平均CT值、信号噪声比、对比噪声比、钙化显示、图像质量及辐射剂量,且实施对比。结果测查肾癌、错构瘤、肾囊肿的平均CT值,常规平扫依序为39. 52±2. 36、37. 13±2. 78、12. 07±1. 92,虚拟平扫依序为39. 63±11. 17、37.83±11. 96、12. 78±11. 35,两组比较差异无统计学意义(P> 0. 05)。肾癌、错构瘤、肾囊肿图像的信号噪声比,常规平扫依序为5. 20±0. 39、5. 41±0. 52、1. 87±0. 28,虚拟平扫依序为7. 01±0. 40、6. 85±0. 69、2. 44±0. 23,虚拟平扫显著高于常规平扫,差异具有统计学意义(P <0. 05)。肾癌、错构瘤、肾囊肿图像的对比噪声比,常规平扫依序为16. 89±1. 71、15. 19±1. 31、9. 49±1. 33,虚拟平扫依序为16. 22±1. 74、15. 74±1. 32、9. 80±1. 33,虚拟平扫显著高于常规平扫,差异具有统计学意义(P <0. 05)。肾癌、错构瘤、肾囊肿的图像质量,常规平扫依序为3. 83±0. 43、4. 02±0. 53、3. 99±0. 45,虚拟平扫依序为3. 89±0. 32、3. 86±0. 35、3. 98±0. 34,两组对比差异无统计学意义(P> 0. 05)。虚拟平扫与常规平扫都能够显示钙化问题。虚拟图像会遗漏微小钙化,两组钙化情况比较差异无统计学意义(P> 0. 05)。辐射剂量上,双能量扫描比常规扫描减少6. 56 m Sv,约33. 33%。结论双源CT双能量于肾脏占位性病变中可给出高质量虚拟图像,辐射剂量显著降低。
Objective To explore the clinical value of double-source CT virtual plain scan for renal occupying lesions. Methods Routine and virtual scans were performed on 192 patients with renal occupying lesions. The liver VNC software was used to get the image,the images were evaluated by two physicians,the mean CT values,signal-to-noise ratio,contrast-to-noise ratio,calcification display,image quality and radiation dose were measured in two groups of renal carcinoma,renal cyst and hamartoma,the results of the two groups were compared. Results The average CT value of kidney cancer,hamartoma,renal cysts were investigated,in the order,the regular plain scan was 39. 52 ± 2. 36,37. 13± 2. 78,12. 07 ± 1. 92,virtual scan sequence was 39. 63 ± 11. 17,37. 83 ± 11. 96,12. 78 ± 11. 35,the difference between the two groups was statistically significant( P > 0. 05). Signal to noise ratio of Kidney cancer,hamartoma,renal cysts image,the conventional scanning was 5. 20 ±0. 39,5. 41 ± 0. 52,1. 87 ± 0. 28,virtual scan sequence was 16. 22 ± 1. 74,15. 74 ± 1. 32,9. 80 ± 1. 33,the signal-to-noise ratio of the two groups was statistically significantly different( P < 0. 05). contrast noise ratio of renal cancer,hamartoma,renal cystic image,the conventional scanning was 16. 89 ± 1. 71,15. 19 ± 1. 31,9. 49 ± 1. 33,virtual scan sequence was 16. 22 ± 1. 74,15. 74 ± 1. 32,9. 80 ± 1. 33,there was significant difference between the two groups( P < 0. 05). The image quality of kidney cancer,hamartoma,renal cyst,the conventional scanning was 3. 83 ± 0. 43,4. 02 ± 0. 53,3. 99 ± 0. 45,virtual scan sequence was 3. 89 ± 0. 32、3. 86 ± 0. 35,3. 98 ± 0. 34,there was no significant difference between the two groups( P > 0. 05). Both virtual scans and regular scans can show calcification problems,virtual images will miss tiny calcifications,there was no statistically significant difference between the two groups( P > 0. 05). Radiation dose,dual energy scanning was reduced by 6. 56 m Sv compared to conventional scanning,about 33. 33%. Conclusion Dual-source CT dual energy in the kidney occupying lesions has high-quality virtual images,and radiation dose decreases significantly.
Objective To explore the clinical value of double-source CT virtual plain scan for renal occupying lesions. Methods Routine and virtual scans were performed on 192 patients with renal occupying lesions. The liver VNC software was used to get the image,the images were evaluated by two physicians,the mean CT values,signal-to-noise ratio,contrast-to-noise ratio,calcification display,image quality and radiation dose were measured in two groups of renal carcinoma,renal cyst and hamartoma,the results of the two groups were compared. Results The average CT value of kidney cancer,hamartoma,renal cysts were investigated,in the order,the regular plain scan was 39. 52 ± 2. 36,37. 13± 2. 78,12. 07 ± 1. 92,virtual scan sequence was 39. 63 ± 11. 17,37. 83 ± 11. 96,12. 78 ± 11. 35,the difference between the two groups was statistically significant( P > 0. 05). Signal to noise ratio of Kidney cancer,hamartoma,renal cysts image,the conventional scanning was 5. 20 ±0. 39,5. 41 ± 0. 52,1. 87 ± 0. 28,virtual scan sequence was 16. 22 ± 1. 74,15. 74 ± 1. 32,9. 80 ± 1. 33,the signal-to-noise ratio of the two groups was statistically significantly different( P < 0. 05). contrast noise ratio of renal cancer,hamartoma,renal cystic image,the conventional scanning was 16. 89 ± 1. 71,15. 19 ± 1. 31,9. 49 ± 1. 33,virtual scan sequence was 16. 22 ± 1. 74,15. 74 ± 1. 32,9. 80 ± 1. 33,there was significant difference between the two groups( P < 0. 05). The image quality of kidney cancer,hamartoma,renal cyst,the conventional scanning was 3. 83 ± 0. 43,4. 02 ± 0. 53,3. 99 ± 0. 45,virtual scan sequence was 3. 89 ± 0. 32、3. 86 ± 0. 35,3. 98 ± 0. 34,there was no significant difference between the two groups( P > 0. 05). Both virtual scans and regular scans can show calcification problems,virtual images will miss tiny calcifications,there was no statistically significant difference between the two groups( P > 0. 05). Radiation dose,dual energy scanning was reduced by 6. 56 m Sv compared to conventional scanning,about 33. 33%. Conclusion Dual-source CT dual energy in the kidney occupying lesions has high-quality virtual images,and radiation dose decreases significantly.
引文
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[5]刘欢欢,张欢,石磊,等.双源CT双能量融合图像在直肠癌应用中的研究初探[J].实用放射学杂志,2013,2(9):16-18
[6]钱玉娥,胡红杰,张峭巍,等.新双源CT虚拟平扫技术在肝脏检查中的应用[J].中华放射学杂志,2011,4(5):120-123.
[7] Ara Shamim,杨传彬,方家杨,等.肾透明细胞癌CT增强程度与微血管及成熟血管多参数的关系研究[J].实用放射学杂志,2017,33(7):1042-1046.
[8] Prakash P,Kalra MK,Kambadakone AK,et al. Reducing abdominal CT radiation dose with adaptive statistical iterative reconstruction technique[J]. Invest Radiol,2010,45(4):202-210.
[9]马德晶,卞佳,逯峰.双源CT双能量非线性融合技术在肾脏肿瘤中的应用研究[J].临床放射学杂志,2014,26(11):125-128.
[10] Graser A,Johnson TR,Hecht EM,et al. Dual-energy CT in patients suspected of having renal masses:can virtual nonenhanced images replace true nonenhanced images[J]. Radiology,2016,252(2):433-440.
[2]刘亚.血供充足乏脂肪肾脏错构瘤与肾透明细胞癌的CT鉴别诊断[J].中国CT和MRI杂志,2015,13(12):68-70.
[3]康淑琴,刘文亚,肖虎,等.应用低剂量造影剂行双源CT肺动脉血管造影价值[J].中华实用诊断与治疗杂志,2015,29(2):185-187.
[4] Mayo JR,Aldrich J,Mullcr NL,et al. Radiation eposurc atchest CT:a statement of the flcischncr socicty[J]. Radiology,2003,228(2):15-21.
[5]刘欢欢,张欢,石磊,等.双源CT双能量融合图像在直肠癌应用中的研究初探[J].实用放射学杂志,2013,2(9):16-18
[6]钱玉娥,胡红杰,张峭巍,等.新双源CT虚拟平扫技术在肝脏检查中的应用[J].中华放射学杂志,2011,4(5):120-123.
[7] Ara Shamim,杨传彬,方家杨,等.肾透明细胞癌CT增强程度与微血管及成熟血管多参数的关系研究[J].实用放射学杂志,2017,33(7):1042-1046.
[8] Prakash P,Kalra MK,Kambadakone AK,et al. Reducing abdominal CT radiation dose with adaptive statistical iterative reconstruction technique[J]. Invest Radiol,2010,45(4):202-210.
[9]马德晶,卞佳,逯峰.双源CT双能量非线性融合技术在肾脏肿瘤中的应用研究[J].临床放射学杂志,2014,26(11):125-128.
[10] Graser A,Johnson TR,Hecht EM,et al. Dual-energy CT in patients suspected of having renal masses:can virtual nonenhanced images replace true nonenhanced images[J]. Radiology,2016,252(2):433-440.